├── gears.png
├── prius4.png
├── screenshot.png
├── README.md
├── index.html
├── psd.js
├── schema.js
├── gears.js
├── simulation.js
├── gears2.js
└── LICENSE
/gears.png:
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https://raw.githubusercontent.com/Adrianotiger/psd/master/gears.png
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/prius4.png:
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https://raw.githubusercontent.com/Adrianotiger/psd/master/prius4.png
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/screenshot.png:
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https://raw.githubusercontent.com/Adrianotiger/psd/master/screenshot.png
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/README.md:
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1 | # PSD (Power Split Device) - Simulator
2 |
3 | ### [Start Online Simulator](https://adrianotiger.github.io/psd/)
4 | 
5 | Simple simulator of the planetary gear of the Toyota Hybrid cars.
6 | Change speed and the ICE rpm to see how the 2 electric motors will compensate on the Prius IV.
7 |
8 |
9 | ## Credits
10 | Dukesim from [PriusFreunde.de](http://www.priusfreunde.de/portal/index.php?option=com_kunena&Itemid=117&func=view&catid=49&id=340103&limit=15&limitstart=15#569398) for the Excel-Sheet with the Prius IV data.
11 | Ryan Cahoon for the [Gear image generator](http://jsbin.com/oresos/latest)
12 |
13 |
14 | ## More info about PSD
15 | Case study: Toyota Hybrid Synergy Drive
16 | - http://www.ae.pwr.wroc.pl/filez/20110606092430_HEV_Toyota.pdf
17 |
18 |
19 | ## Why this project
20 | Since the old project from http://eahart.com/prius/psd/ is wrote with Flash, it doesn't work anymore on the browser.
21 | This is just an improved and open source project to see the planetary gear from a hybrid car again.
22 |
23 |
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/index.html:
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1 |
2 |
7 |
8 |
9 | PSD Simulator
10 |
11 |
12 |
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15 |
16 |
17 |
18 |
19 |
21 |
22 |
25 |
26 |
27 |
28 |
29 |
PSD - Prius IV
30 |
31 |
33 |
34 |
35 |
36 |
37 |
38 |
39 |
40 |
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/psd.js:
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1 | /*
2 | * To change this license header, choose License Headers in Project Properties.
3 | * To change this template file, choose Tools | Templates
4 | * and open the template in the editor.
5 | */
6 |
7 | class PSDData
8 | {
9 | constructor()
10 | {
11 | this.rpm = [];
12 | this.rpm.ice = 0;
13 | this.rpm.mg1 = 0;
14 | this.rpm.mg2 = 0;
15 | this.rpm.wheels = 0;
16 | this.rpm.diff = 0;
17 | this.rpm.ring = 0;
18 | this.speed = 0;
19 | this.valid = true;
20 | }
21 | }
22 |
23 | class PSD
24 | {
25 | constructor()
26 | {
27 | this.gears = [];
28 | this.gears.sun = 30;
29 | this.gears.planetary = 23;
30 | this.gears.ringInside = 78;
31 | this.gears.ringOutside = 65;
32 | this.gears.middleBig = 53;
33 | this.gears.small = 17;
34 | this.gears.middleSmall = 21;
35 | this.gears.big = 73;
36 |
37 | this.tire = [];
38 | this.tire.diameter = 17;
39 | this.tire.width = 215;
40 | this.tire.ratio = 45;
41 | this.tire.getCircumference = function (){ return parseInt(Math.PI * (this.diameter * 25.4 + 2.0 * this.ratio / 100 * this.width) / 10.0) / 100.0; };
42 |
43 | this.engines = [];
44 | this.engines.ice = [];
45 | this.engines.ice.max = 5200;
46 | this.engines.mg1 = [];
47 | this.engines.mg1.min = -10000;
48 | this.engines.mg1.max = 10000;
49 | this.engines.mg2 = [];
50 | this.engines.mg2.min = -17000;
51 | this.engines.mg2.max = 17000;
52 |
53 | this.rpm2kw = ((1.0 / 60) / 1000) * Math.PI * 2;
54 | }
55 |
56 | calculateFromSpeed(rpmIce, speed)
57 | {
58 | var d = new PSDData();
59 | d.rpm.ice = parseInt(rpmIce);
60 | d.speed = parseInt(speed);
61 |
62 | d.rpm.wheels = ((d.speed / 3.6) / this.tire.getCircumference()) * 60;
63 | d.rpm.diff = (this.gears.big / this.gears.middleSmall) * d.rpm.wheels;
64 | d.rpm.ring = (this.gears.middleBig / this.gears.ringOutside) * d.rpm.diff;
65 |
66 | var ioPlanetary = - this.gears.ringInside / this.gears.sun;
67 |
68 | d.rpm.mg1 = ioPlanetary * d.rpm.ring + (1 - ioPlanetary) * d.rpm.ice;
69 | d.rpm.mg2 = d.rpm.diff * (this.gears.middleBig / this.gears.small);
70 |
71 | return d;
72 | }
73 | };
74 |
75 | var psd = new PSD();
76 |
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/schema.js:
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1 | /*
2 | * To change this license header, choose License Headers in Project Properties.
3 | * To change this template file, choose Tools | Templates
4 | * and open the template in the editor.
5 | */
6 |
7 |
8 | /* global psd */
9 |
10 | class Rect
11 | {
12 | constructor(x,y,w,h,color,text)
13 | {
14 | this.width = w;
15 | this.height = h;
16 | this.x = x;
17 | this.y = y;
18 | this.color = color;
19 | this.text = text;
20 | }
21 |
22 | draw(ctx)
23 | {
24 | var grd = ctx.createLinearGradient(this.x, 0, this.x + this.width, 0);
25 | grd.addColorStop(0, this.color);
26 | grd.addColorStop(0.5, "#ddd");
27 | grd.addColorStop(1, this.color);
28 | // Fill with gradient
29 | ctx.fillStyle = grd;
30 | ctx.fillRect(this.x, this.y, this.width, this.height);
31 |
32 | ctx.font = "20px Arial";
33 | ctx.textAlign = "center";
34 | ctx.baseLine = "middle";
35 | ctx.strokeText(this.text, this.x + this.width/2, this.y + this.height/2 + 6);
36 | }
37 |
38 | drawDirectConnect(rect2, ctx)
39 | {
40 | if(rect2.x >= this.x + this.width)
41 | {
42 |
43 | }
44 | else if(rect2.x + rect2.width <= this.x)
45 | {
46 |
47 | }
48 | else if(rect2.y > this.y + this.height)
49 | {
50 | ctx.beginPath();
51 | ctx.moveTo(this.x + this.width /2, this.y + this.height);
52 | ctx.lineTo(rect2.x + rect2.width / 2, rect2.y);
53 | ctx.stroke();
54 | }
55 | else if(rect2.y + rect2.height <= this.y)
56 | {
57 | ctx.beginPath();
58 | ctx.moveTo(this.x + this.width /2, this.y);
59 | ctx.lineTo(rect2.x + rect2.width / 2, rect2.y + rect2.height);
60 | ctx.stroke();
61 | }
62 | }
63 | };
64 |
65 | class Axis
66 | {
67 | constructor(leftObj)
68 | {
69 | this.STEP = 30;
70 | this.height = this.STEP * 2;
71 |
72 | this.x = leftObj.x + 80;
73 | if(!isNaN(leftObj.width)) this.x += leftObj.width;
74 | this.y = leftObj.y - this.STEP;
75 | if(!isNaN(leftObj.height)) this.y += leftObj.height / 2;
76 | this.connections = [];
77 | this.gears = [];
78 | }
79 |
80 | setFirstObj(obj)
81 | {
82 | this.y = obj.y - this.STEP;
83 | if(!isNaN(obj.height)) this.y += obj.height / 2;
84 | }
85 |
86 | addConnection(conn)
87 | {
88 | this.gears.push(0);
89 | this.connections.push(conn);
90 | this.height += this.STEP;
91 | }
92 |
93 | addGear(tooths)
94 | {
95 | this.gears.push(tooths);
96 | this.height -= 7;
97 | }
98 |
99 | draw(ctx)
100 | {
101 | var conns = 0;
102 | var gears = 0;
103 | var y = this.y + this.STEP;
104 | ctx.beginPath();
105 | ctx.moveTo(this.x, this.y);
106 | ctx.lineTo(this.x, y);
107 | ctx.moveTo(this.x-10, this.y);
108 | ctx.lineTo(this.x+10, this.y);
109 | ctx.stroke();
110 | for(var k=0;k= x)
149 | {
150 | ctx.beginPath();
151 | ctx.moveTo(x, y);
152 | ctx.lineTo(rect2.x, rect2.y + rect2.height / 2);
153 | ctx.stroke();
154 | }
155 | else if(rect2.x + rect2.width <= x)
156 | {
157 | ctx.beginPath();
158 | ctx.moveTo(x, y);
159 | if(rect2.y + rect2.height / 2 > y)
160 | {
161 | ctx.lineTo(x - (x - rect2.x - rect2.width) / 2 - Math.abs(y - rect2.y - rect2.height/2) / 3, y);
162 | ctx.lineTo(x - (x - rect2.x - rect2.width) / 2 - Math.abs(y - rect2.y - rect2.height/2) / 3, rect2.y + rect2.height / 2);
163 | }
164 | if(rect2.y + rect2.height / 2 < y)
165 | {
166 | ctx.lineTo(x - (x - rect2.x - rect2.width) / 2 - Math.abs(y - rect2.y - rect2.height/2) / 3, y);
167 | ctx.lineTo(x - (x - rect2.x - rect2.width) / 2 - Math.abs(y - rect2.y - rect2.height/2) / 3, rect2.y + rect2.height / 2);
168 | }
169 | ctx.lineTo(rect2.x + rect2.width, rect2.y + rect2.height / 2);
170 | ctx.stroke();
171 | }
172 | }
173 |
174 | drawGear(x,y,tooths, isTop, ctx)
175 | {
176 | ctx.beginPath();
177 | ctx.moveTo(x-10, y);
178 | ctx.lineTo(x+10, y);
179 | ctx.stroke();
180 |
181 | if(tooths > 1)
182 | {
183 | ctx.font = '15px serif';
184 | ctx.fillText(tooths + "t", x-20, isTop ? y - 8 : y + 13);
185 | }
186 | }
187 | };
188 |
189 | class Car
190 | {
191 | constructor(ctx)
192 | {
193 | this.ctx = ctx;
194 | this.wheels = [];
195 | this.wheels[0] = new Rect(10,10,80,30, "#aaa", "Wheel");
196 | this.wheels[1] = new Rect(10,150,80,30, "#aaa", "Wheel");
197 | this.diff = new Rect(10,70,80,40, "#666", "Diff");
198 | this.axis = [];
199 | this.axis[0] = new Axis(this.diff);
200 | this.axis[0].addConnection(this.diff);
201 | this.axis[0].addGear(psd.gears.big);
202 | this.axis[0].addGear(psd.gears.middleSmall);
203 | this.axis[1] = new Axis(this.axis[0]);
204 | this.mg1 = new Rect(300, 308, 80, 60, "#aaf", "MG1");
205 | this.mg2 = new Rect(300, 60, 80, 60, "#55a", "MG2");
206 | this.ice = new Rect(20, 308, 80, 60, "#dd6", "ICE");
207 | this.axis[1].addConnection(this.mg2);
208 | this.axis[1].setFirstObj(this.mg2);
209 | this.axis[1].addGear(psd.gears.small);
210 | this.axis[1].addGear(1);
211 | this.axis[1].addConnection(this.axis[1]);
212 | this.axis[0].addConnection(this.axis[1]);
213 | this.axis[1].addGear(psd.gears.middleBig);
214 | this.axis[1].addGear(psd.gears.ringOutside);
215 | this.axis[1].addConnection(this.ice);
216 | this.axis[1].addGear(psd.gears.ringInside);
217 | this.axis[1].addGear(psd.gears.planetary);
218 | this.axis[1].addConnection(this.ice);
219 | this.axis[1].addGear(1);
220 | this.axis[1].addGear(psd.gears.sun);
221 | this.axis[1].addConnection(this.mg1);
222 | this.axis[1].addGear(1);
223 | this.axis[1].addGear(1);
224 | this.axis[1].addConnection(this.ice);
225 | this.axis[1].addGear(1);
226 | this.axis[1].addGear(1);
227 | this.axis[1].addConnection(this.ice);
228 | }
229 |
230 | draw()
231 | {
232 | this.wheels[0].draw(this.ctx);
233 | this.wheels[1].draw(this.ctx);
234 | this.mg1.draw(this.ctx);
235 | this.mg2.draw(this.ctx);
236 | this.ice.draw(this.ctx);
237 | this.diff.draw(this.ctx);
238 | this.diff.drawDirectConnect(this.wheels[0], this.ctx);
239 | this.diff.drawDirectConnect(this.wheels[1], this.ctx);
240 | for(var k=0;k{
248 | var canvas_sch = document.getElementById("gears");
249 | var ctx = canvas_sch.getContext("2d");
250 | car = new Car(ctx);
251 | car.draw();
252 | });
253 |
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/gears.js:
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1 | /*
2 | * To change this license header, choose License Headers in Project Properties.
3 | * To change this template file, choose Tools | Templates
4 | * and open the template in the editor.
5 | */
6 |
7 | /* global psd */
8 |
9 | class PlanetaryAnimation
10 | {
11 | constructor(ctx)
12 | {
13 | this.ctx = ctx;
14 |
15 | this.cx = ctx.canvas.width * 0.5;
16 | this.cy = ctx.canvas.height * 0.5;
17 |
18 | angle1 = 0.05;
19 |
20 | this.ring = [];
21 | this.ring.OX = ctx.canvas.width * 0.4;
22 | this.ring.O = this.ring.OX - 10;
23 | this.ring.I = this.ring.O - 10;
24 | this.ring.tooths = psd.gears.ringInside;
25 | this.ring.toothAngle = Math.PI / this.ring.tooths;
26 | this.ring.TaperO = this.ring.toothAngle * 30 * 0.005; // inner taper offset (100% = half notch)
27 | this.ring.TaperI = this.ring.toothAngle * 50 * 0.005; // inner taper offset (100% = half notch)
28 | this.ring.speed = 0;
29 | this.ring.angle = 0.04;
30 |
31 | this.planets = [];
32 | this.planets.O = this.ring.I * 0.33;
33 | this.planets.I = this.planets.O - 10;
34 | this.planets.tooths = psd.gears.planetary;
35 | this.planets.toothAngle = Math.PI / this.planets.tooths;
36 | this.planets.TaperO = this.planets.toothAngle * 50 * 0.005; // inner taper offset (100% = half notch)
37 | this.planets.TaperI = this.planets.toothAngle * 30 * 0.005; // inner taper offset (100% = half notch)
38 | this.planets.speed = 0;
39 | this.planets.angle = 0;
40 | this.planets.offsets = [-0.07,0.12,0.08,0.0];
41 |
42 | this.engine = [];
43 | this.engine.speed = 0;
44 | this.engine.angle = 0;
45 | this.engine.radius = this.ring.O - this.planets.O - 3;
46 |
47 | this.sun = [];
48 | this.sun.O = this.engine.radius - this.planets.I - 3;
49 | this.sun.I = this.sun.O - 10;
50 | this.sun.tooths = psd.gears.sun;
51 | this.sun.toothAngle = Math.PI / this.sun.tooths;
52 | this.sun.TaperO = this.sun.toothAngle * 60 * 0.005; // inner taper offset (100% = half notch)
53 | this.sun.TaperI = this.sun.toothAngle * 30 * 0.005; // inner taper offset (100% = half notch)
54 | this.sun.speed = 0;
55 | this.sun.angle = 0;
56 |
57 |
58 | this.ani = setInterval(()=>{this.step();}, 33);
59 | }
60 |
61 | setMG1(mg1, mg2)
62 | {
63 | const slowMotionFactor = 200000.0;
64 | //this.engine.speed = -ice / slowMotionFactor;
65 | this.sun.speed = mg1 / slowMotionFactor;
66 | this.planets.speed = -this.sun.speed * (this.sun.tooths / this.planets.tooths) - this.engine.speed * this.planets.tooths / 10.0;
67 | //this.ring.speed = this.planets.speed * (this.planets.tooths / this.ring.tooths) - this.engine.speed * 0.702;
68 | this.ring.speed = mg2 / slowMotionFactor / (this.planets.tooths * this.ring.tooths / 470.0);
69 | //this.engine.speed = -(-this.planets.speed + this.ring.speed) / 2.0;
70 | }
71 |
72 | step()
73 | {
74 | this.engine.angle += this.engine.speed;
75 | this.sun.angle += this.sun.speed;
76 | this.ring.angle += this.ring.speed;
77 | this.planets.angle += this.planets.speed;
78 | this.draw();
79 | }
80 |
81 | draw()
82 | {
83 | this.drawRing();
84 | this.drawPlanets();
85 | this.drawSun();
86 | }
87 |
88 | drawRing()
89 | {
90 | this.ctx.fillStyle = '#55a';
91 | this.ctx.ellipse(this.cx, this.cy, this.ring.OX, this.ring.OX, 0, 0, Math.PI * 2);
92 | this.ctx.fill();
93 |
94 | var c = this.ring.angle;
95 |
96 | this.ctx.beginPath();
97 | var toggle = true;
98 | for (let k=0;k{
210 | var canvas = document.getElementById("planetary");
211 | var ctx = canvas.getContext("2d");
212 | planetary = new PlanetaryAnimation(ctx);
213 | });
214 |
215 |
216 |
217 | var canvas_psd;
218 | var ctx2;
219 | var car;
220 |
221 | var sonnenrad = 30; // sungear
222 | var umlaufrad = 23; // ringgear
223 | var hohlrad_i = 78;
224 | var hohlrad_a = 65;
225 | var zwischenrad_g = 53;
226 | var zahnrad_k = 17;
227 | var zwischenrad_k = 21;
228 | var zahnrad_g = 73;
229 | var reifen = 1.94;
230 | var rpm2kw = ((1.0 / 60) / 1000) * Math.PI * 2;
231 |
232 | setTimeout(()=>{init2();}, 300);
233 |
234 | function init2()
235 | {
236 | canvas_psd = document.getElementById("planetary");
237 | ctx2 = canvas_psd.getContext("2d");
238 |
239 | setInterval(()=>{rotateGears();}, 200);
240 | }
241 |
242 | var cx = 200, // center x
243 | cy = 200, // center y
244 | cx2 = 200,
245 | cy2 = 200 - 40 - 30 - 5,
246 | radiusO = 50, // outer radius
247 | radiusI = 40, // inner radius
248 | taperO = 40, // outer taper %
249 | taperI = 30, // inner taper %
250 |
251 | radius2 = 75, // inner radius
252 | radius2I = 20, // inner radius
253 | radius2O = 30, // inner radius
254 |
255 | radius4 = 120, // inner radius
256 | radius4I = 100, // inner radius
257 | radius4O = 110, // inner radius
258 |
259 | // pre-calculate values for loop
260 |
261 | pi2 = 2 * Math.PI, // cache 2xPI (360deg)
262 | angle1 = pi2 / (sonnenrad * 2), // angle between notches
263 | taperAI1 = angle1 * taperI * 0.005, // inner taper offset (100% = half notch)
264 | taperAO1 = angle1 * taperO * 0.005, // outer taper offset
265 | a = angle1, // iterator (angle)
266 | angle2 = pi2 / (zahnrad_k * 2), // angle between notches
267 | taperAI2 = angle2 * taperI * 0.005, // inner taper offset (100% = half notch)
268 | taperAO2 = angle2 * taperO * 0.005, // outer taper offset
269 | b = angle2, // iterator (angle)
270 | angle3 = 0,
271 | angle4 = pi2 / (zahnrad_g * 2), // angle between notches
272 | taperAI4 = angle4 * taperI * 0.005, // inner taper offset (100% = half notch)
273 | taperAO4 = angle4 * taperO * 0.005, // outer taper offset
274 | c = angle4, // iterator (angle)
275 | speed = 0.5,
276 | toggle = false; // notch radius level (i/o)
277 |
278 | function rotateGears()
279 | {
280 | return;
281 | //sonnenrad
282 | a+=speed;
283 | b-=speed * (sonnenrad / zahnrad_k);
284 | c+=speed / 100;
285 |
286 | ctx2.clearRect(0, 0, canvas_psd.width, canvas_psd.height);
287 |
288 | ctx2.fillStyle = '#55a';
289 | ctx2.ellipse(cx, cy, radius4, radius4, 0, 0, Math.PI * 2);
290 | ctx2.fill();
291 |
292 | ctx2.beginPath();
293 | //ctx2.moveTo(cx + radiusO * Math.cos(taperAO1), cy + radiusO * Math.sin(taperAO1));
294 | for (let k=0;k= 20'000
21 | get min() { return Math.min(Math.min(psd.engines.mg1.min, psd.engines.mg2.min), -this.max); } // <= -20'000
22 | get zero() { return parseInt(this.h / 2); }
23 | get border() { return 15; }
24 | get length() { return this.zero - this.border; }
25 | get icex() { return parseInt(1.0 * (psd.gears.ringInside/(psd.gears.sun+psd.gears.ringInside)) * (this.w*4/6)); }
26 | get icey() { return parseInt((53.0/30.0) * this.length * psd.engines.ice.max / psd.engines.mg2.max); } // todo: find the right formula
27 |
28 | updateGearAnimation(mg1, ice, mg2)
29 | {
30 | //planetary.setMG1(mg1, mg2);
31 | // sun: carrier + ring = sun
32 | // carrier: sun + ring = carrier
33 | // ring: sun + carrier = ring
34 | // gear2SunSpeed = 0;
35 | // gear2CarrierSpeed = 0;
36 | // gear2RingSpeed = 0;
37 | if(ice === 0)
38 | {
39 | gear2Mode = "ring";
40 | gear2SunSpeed = mg1 / 1000.0;
41 | gear2CarrierSpeed = 0;
42 | }
43 | else if(mg2 === 0)
44 | {
45 | gear2Mode = "sun";
46 | gear2RingSpeed = 0;
47 | gear2CarrierSpeed = ice / 250.0;
48 | }
49 | else
50 | {
51 | gear2Mode = "sun";
52 | gear2RingSpeed = mg2 / 1000.0;
53 | gear2CarrierSpeed = ice / 250.0;
54 | }
55 | }
56 |
57 | createView(svg)
58 | {
59 | this.svg = svg;
60 | const w = this.w;
61 | const h = this.h;
62 | const max = this.max;
63 | const min = this.min;
64 | const zero = this.zero;
65 | const border = this.border;
66 | const length = this.length;
67 |
68 | var t, l, r, x, y1, y2;
69 | const ns = "http://www.w3.org/2000/svg";
70 |
71 | // draw 0 line
72 | l = document.createElementNS(ns, "line");
73 | l.setAttribute("x1", w/6); l.setAttribute("y1", zero); l.setAttribute("x2", w*5/6); l.setAttribute("y2", zero); l.setAttribute("stroke", "#aaa");
74 | svg.appendChild(l);
75 |
76 | // draw MG1
77 | x = parseInt(w / 6);
78 | l = document.createElementNS(ns, "line");
79 | l.setAttribute("x1", x); l.setAttribute("y1", border); l.setAttribute("x2", x); l.setAttribute("y2", h-border); l.setAttribute("stroke", "#aaa");
80 | svg.appendChild(l);
81 | r = document.createElementNS(ns, "rect");
82 | y1 = zero - length * psd.engines.mg1.max / max;
83 | y2 = zero + length * psd.engines.mg1.min / min;
84 | r.setAttribute("x", x-3); r.setAttribute("y", y1); r.setAttribute("width", 6); r.setAttribute("height", y2 - y1);
85 | r.setAttribute("rx", 3); r.setAttribute("ry", 3); r.setAttribute("fill", "#000");
86 | svg.appendChild(r);
87 | t = document.createElementNS(ns, "text");
88 | t.setAttribute("x", x + 5); t.setAttribute("y", 15); t.setAttribute("fill", "#88f");
89 | t.appendChild(document.createTextNode("MG1"));
90 | svg.appendChild(t);
91 | t = document.createElementNS(ns, "text");
92 | t.setAttribute("x", w/6-60); t.setAttribute("y", zero+5); t.setAttribute("fill", "#5a5"); t.setAttribute("id", "svg_mg1_rpm");
93 | t.appendChild(document.createTextNode("0rpm"));
94 | svg.appendChild(t);
95 |
96 | // draw MG2
97 | x = parseInt(w * 5 / 6);
98 | l = document.createElementNS(ns, "line");
99 | l.setAttribute("x1", x); l.setAttribute("y1", border); l.setAttribute("x2", x); l.setAttribute("y2", h-border); l.setAttribute("stroke", "#aaa");
100 | svg.appendChild(l);
101 | r = document.createElementNS(ns, "rect");
102 | y1 = zero - length * psd.engines.mg2.max / max;
103 | y2 = zero + length * psd.engines.mg2.min / min;
104 | r.setAttribute("x", x-3); r.setAttribute("y", y1); r.setAttribute("width", 6); r.setAttribute("height", y2 - y1);
105 | r.setAttribute("rx", 3); r.setAttribute("ry", 3); r.setAttribute("fill", "#000");
106 | svg.appendChild(r);
107 | t = document.createElementNS(ns, "text");
108 | t.setAttribute("x", x-38); t.setAttribute("y", 15); t.setAttribute("fill", "#55b");
109 | t.appendChild(document.createTextNode("MG2"));
110 | svg.appendChild(t);
111 | t = document.createElementNS(ns, "text");
112 | t.setAttribute("x", w*5/6+10); t.setAttribute("y", zero+5); t.setAttribute("fill", "#5a5"); t.setAttribute("id", "svg_mg2_rpm");
113 | t.appendChild(document.createTextNode("0rpm"));
114 | svg.appendChild(t);
115 |
116 | // connection lines
117 | x = this.w*2/6;//this.icex;
118 | l = document.createElementNS(ns, "line");
119 | l.setAttribute("x1", w/6); l.setAttribute("y1", zero); l.setAttribute("x2", w/6+x); l.setAttribute("y2", zero); l.setAttribute("stroke", "#4b4");
120 | l.setAttribute("id", "svg_icemg1");
121 | svg.appendChild(l);
122 | l = document.createElementNS(ns, "line");
123 | l.setAttribute("x1", w/6+x); l.setAttribute("y1", zero); l.setAttribute("x2", w*5/6); l.setAttribute("y2", zero); l.setAttribute("stroke", "#4b4");
124 | l.setAttribute("id", "svg_icemg2");
125 | svg.appendChild(l);
126 |
127 | // draw ICE
128 | var fo = document.createElementNS(ns, "foreignObject");
129 | fo.setAttribute("x", w/6); fo.setAttribute("y", 0); fo.setAttribute("width", w*4/6); fo.setAttribute("height", h);
130 | //fo.setAttribute("style", "background-color:red");
131 | svg.appendChild(fo);
132 | l = document.createElement("input");
133 | //y2 = length * psd.engines.ice.max / max + 15; // 15 is the border of the slider
134 | y2 = this.icey + 15;
135 | l.setAttribute("type", "range");l.setAttribute("min", "0");l.setAttribute("max", psd.engines.ice.max);l.setAttribute("value", 0);
136 | l.setAttribute("id", "rpmice");l.setAttribute("style", "width:" + y2 + "px;height:10px;position:absolute;left:" + (-y2/2) + "px;top:-5px;transform:rotate(-90deg) translate(" + (-zero+y2/2-6) + "px," + (x-3) + "px);");
137 | l.addEventListener("input", ()=>{sim.calculateNewRPM();});
138 | fo.appendChild(l);
139 | l = document.createElement("input");
140 | l.setAttribute("type", "range");l.setAttribute("min", -50);l.setAttribute("max", 250);l.setAttribute("value", 0);
141 | l.setAttribute("id", "speed");l.setAttribute("style", "width:" + (w*4/6-15) + "px;height:10px;position:absolute;left:5px;bottom:20px;");
142 | l.addEventListener("input", ()=>{sim.calculateNewRPM();});
143 | l.addEventListener("dblclick", ()=>{l.value=0;sim.calculateNewRPM();});
144 | fo.appendChild(l);
145 | t = document.createElementNS(ns, "text");
146 | t.setAttribute("x", x+w/6-15); t.setAttribute("y", 15); t.setAttribute("fill", "#aa2");
147 | t.appendChild(document.createTextNode("ICE"));
148 | svg.appendChild(t);
149 | t = document.createElementNS(ns, "text");
150 | t.setAttribute("x", x+w/6-20); t.setAttribute("y", zero+25); t.setAttribute("fill", "#5a5"); t.setAttribute("id", "svg_ice_rpm");
151 | t.appendChild(document.createTextNode("0rpm"));
152 | svg.appendChild(t);
153 | t = document.createElementNS(ns, "text");
154 | t.setAttribute("x", w/2-30); t.setAttribute("y", h-7); t.setAttribute("fill", "#555"); t.setAttribute("id", "svg_speed");
155 | t.appendChild(document.createTextNode("0 km/h"));
156 | svg.appendChild(t);
157 |
158 | }
159 |
160 | calculateNewRPM()
161 | {
162 | var d = psd.calculateFromSpeed(document.getElementById("rpmice").value, document.getElementById("speed").value);
163 |
164 | this.updateGearAnimation(d.rpm.mg1, d.rpm.ice, d.rpm.mg2);
165 |
166 | const length = this.length;
167 | const zero = this.zero;
168 | const max = this.max;
169 | const min = this.min;
170 |
171 | document.getElementById("svg_speed").innerHTML = d.speed + " km/h";
172 | document.getElementById("svg_ice_rpm").innerHTML = d.rpm.ice + "rpm";
173 | document.getElementById("svg_icemg1").y2.baseVal.value = zero - parseInt(this.icey * d.rpm.ice / psd.engines.ice.max);
174 | document.getElementById("svg_icemg2").y1.baseVal.value = zero - parseInt(this.icey * d.rpm.ice / psd.engines.ice.max);
175 |
176 | // for a better graphic:
177 | //document.getElementById("svg_icemg1").y2.baseVal.value -= parseInt((d.rpm.mg1 - d.rpm.mg2 *0.6) / 5000);
178 | //document.getElementById("svg_icemg2").y1.baseVal.value -= parseInt((d.rpm.mg2 * 0.6 - d.rpm.mg1) / 5000);
179 |
180 | document.getElementById("svg_mg1_rpm").innerHTML = parseInt(d.rpm.mg1);
181 | document.getElementById("svg_mg2_rpm").innerHTML = parseInt(d.rpm.mg2);
182 |
183 | if(d.rpm.mg1 > psd.engines.mg1.max)
184 | {
185 | document.getElementById("svg_mg1_rpm").setAttribute('y', zero - parseInt(length * psd.engines.mg1.max / max));
186 | document.getElementById("svg_icemg1").y1.baseVal.value = zero - parseInt(length * psd.engines.mg1.max / max);
187 | document.getElementById("svg_icemg1").setAttribute('stroke', "#e11");
188 | }
189 | else if(d.rpm.mg1 < psd.engines.mg1.min)
190 | {
191 | document.getElementById("svg_mg1_rpm").setAttribute('y', zero + parseInt(length * psd.engines.mg1.min / min));
192 | document.getElementById("svg_icemg1").y1.baseVal.value = zero + parseInt(length * psd.engines.mg1.min / min);
193 | document.getElementById("svg_icemg1").setAttribute('stroke', "#e11");
194 | }
195 | else
196 | {
197 | document.getElementById("svg_mg1_rpm").setAttribute('y', zero - parseInt(length * d.rpm.mg1 / max));
198 | document.getElementById("svg_icemg1").y1.baseVal.value = zero - parseInt(length * d.rpm.mg1 / max);
199 | document.getElementById("svg_icemg1").setAttribute('stroke', "#1e1");
200 | }
201 |
202 | if(d.rpm.mg2 > psd.engines.mg2.max)
203 | {
204 | document.getElementById("svg_mg2_rpm").setAttribute('y', zero - parseInt(length * psd.engines.mg2.max / max));
205 | document.getElementById("svg_icemg2").y2.baseVal.value = zero - parseInt(length * psd.engines.mg2.max / max);
206 | document.getElementById("svg_icemg2").setAttribute('stroke', "#e11");
207 | }
208 | else if(d.rpm.mg2 < psd.engines.mg2.min)
209 | {
210 | document.getElementById("svg_mg2_rpm").setAttribute('y', zero + parseInt(length * psd.engines.mg2.min / min));
211 | document.getElementById("svg_icemg2").y2.baseVal.value = zero + parseInt(length * psd.engines.mg2.min / min);
212 | document.getElementById("svg_icemg2").setAttribute('stroke', "#e11");
213 | }
214 | else
215 | {
216 | document.getElementById("svg_mg2_rpm").setAttribute('y', zero - parseInt(length * d.rpm.mg2 / max));
217 | document.getElementById("svg_icemg2").y2.baseVal.value = zero - parseInt(length * d.rpm.mg2 / max);
218 | document.getElementById("svg_icemg2").setAttribute('stroke', "#1e1");
219 | }
220 | }
221 |
222 | fillTechData(div)
223 | {
224 | var t, tr, td;
225 | t = document.createElement("table");
226 | t.setAttribute("style", "width:100%;font-size:80%;vertical-align:top;");
227 | tr = document.createElement("tr");
228 | td = document.createElement("th");
229 | td.setAttribute("colspan", 2);
230 | td.setAttribute("style", "font-size:120%;");
231 | td.appendChild(document.createTextNode("Tech Data"));
232 | tr.appendChild(td);
233 | t.appendChild(tr);
234 | tr = document.createElement("tr");
235 | td = document.createElement("td");
236 | {
237 | var t2 = document.createElement("table");
238 | t2.setAttribute("style", "width:80%;text-align:left;");
239 | var tr2 = document.createElement("tr");
240 | var td2 = document.createElement("th");
241 | td2.setAttribute("colspan", 2);
242 | td2.appendChild(document.createTextNode("Gears"));
243 | tr2.appendChild(td2);
244 | t2.appendChild(tr2);
245 | for(var x in psd.gears)
246 | {
247 | tr2 = document.createElement("tr");
248 | td2 = document.createElement("td");
249 | td2.appendChild(document.createTextNode(x));
250 | tr2.appendChild(td2);
251 | td2 = document.createElement("td");
252 | td2.appendChild(document.createTextNode(psd.gears[x]));
253 | tr2.appendChild(td2);
254 | t2.appendChild(tr2);
255 | }
256 | td.appendChild(t2);
257 | tr.appendChild(td);
258 | }
259 | td = document.createElement("td");
260 | {
261 | var t2 = document.createElement("table");
262 | t2.setAttribute("style", "width:80%;text-align:left;vertical-align:top;");
263 | var tr2 = document.createElement("tr");
264 | var td2 = document.createElement("th");
265 | td2.setAttribute("colspan", 2);
266 | td2.appendChild(document.createTextNode("Engines"));
267 | tr2.appendChild(td2);
268 | t2.appendChild(tr2);
269 | for(var y in psd.engines)
270 | {
271 | for(var x in psd.engines[y])
272 | {
273 | tr2 = document.createElement("tr");
274 | td2 = document.createElement("td");
275 | td2.appendChild(document.createTextNode(y.toUpperCase() + " " + x));
276 | tr2.appendChild(td2);
277 | td2 = document.createElement("td");
278 | td2.appendChild(document.createTextNode(psd.engines[y][x]));
279 | tr2.appendChild(td2);
280 | t2.appendChild(tr2);
281 | }
282 | }
283 | td.appendChild(t2);
284 | t2 = document.createElement("table");
285 | t2.setAttribute("style", "width:80%;text-align:left;vertical-align:top;margin-top:20px;");
286 | tr2 = document.createElement("tr");
287 | td2 = document.createElement("th");
288 | td2.setAttribute("colspan", 2);
289 | td2.appendChild(document.createTextNode("Tire"));
290 | tr2.appendChild(td2);
291 | t2.appendChild(tr2);
292 | for(var y in psd.tire)
293 | {
294 | if(isNaN(psd.tire[y])) continue;
295 | tr2 = document.createElement("tr");
296 | td2 = document.createElement("td");
297 | td2.appendChild(document.createTextNode(y));
298 | tr2.appendChild(td2);
299 | td2 = document.createElement("td");
300 | td2.appendChild(document.createTextNode(psd.tire[y]));
301 | tr2.appendChild(td2);
302 | t2.appendChild(tr2);
303 | }
304 | td.appendChild(t2);
305 | tr.appendChild(td);
306 | }
307 | t.appendChild(tr);
308 |
309 |
310 | div.appendChild(t);
311 | }
312 | };
313 |
314 | var sim = new Simulation();
315 |
316 | window.addEventListener("load", ()=>{
317 | sim.createView(document.getElementById("sim_svg"));
318 | sim.fillTechData(document.getElementById("tech_sheet"));
319 | });
320 |
321 |
322 |
--------------------------------------------------------------------------------
/gears2.js:
--------------------------------------------------------------------------------
1 | /*
2 | Gear image generation code adapted from http://jsbin.com/oresos/latest
3 |
4 | Gear Animation code Copyright (c) 2014 Ryan Cahoon and is distributed under the following terms
5 |
6 | Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation
7 | files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,
8 | modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
9 | Software is furnished to do so, subject to the following conditions:
10 |
11 | * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
12 | Software.
13 | * The names of the contributors may not be used to endorse or promote products derived from this software without
14 | specific prior written permission.
15 |
16 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
17 | WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
18 | COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 | ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20 | */
21 |
22 | var Animation = function(){
23 | this.t = 0;
24 | this.timeInterval = 0;
25 | this.startTime = 0;
26 | this.lastTime = 0;
27 | this.frame = 0;
28 | this.animating = false;
29 |
30 | // provided by Paul Irish
31 | window.requestAnimFrame = (function(callback){
32 | return window.requestAnimationFrame ||
33 | window.webkitRequestAnimationFrame ||
34 | window.mozRequestAnimationFrame ||
35 | window.oRequestAnimationFrame ||
36 | window.msRequestAnimationFrame ||
37 | function(callback){
38 | window.setTimeout(callback, 1000 / 60);
39 | };
40 | })();
41 | };
42 |
43 | Animation.prototype.setStage = function(func){
44 | this.stage = func;
45 | };
46 |
47 | Animation.prototype.isAnimating = function(){
48 | return this.animating;
49 | };
50 |
51 | Animation.prototype.getFrame = function(){
52 | return this.frame;
53 | };
54 |
55 | Animation.prototype.start = function(){
56 | this.animating = true;
57 | var date = new Date();
58 | this.startTime = date.getTime();
59 | this.lastTime = this.startTime;
60 |
61 | if (this.stage !== undefined) {
62 | this.stage();
63 | }
64 |
65 | this.animationLoop();
66 | };
67 |
68 | Animation.prototype.stop = function(){
69 | this.animating = false;
70 | };
71 |
72 | Animation.prototype.getTimeInterval = function(){
73 | return this.timeInterval;
74 | };
75 |
76 | Animation.prototype.getTime = function(){
77 | return this.t;
78 | };
79 |
80 | Animation.prototype.getFps = function(){
81 | return this.timeInterval > 0 ? 1000 / this.timeInterval : 0;
82 | };
83 |
84 | Animation.prototype.animationLoop = function(){
85 | var that = this;
86 |
87 | this.frame++;
88 | var date = new Date();
89 | var thisTime = date.getTime();
90 | this.timeInterval = thisTime - this.lastTime;
91 | this.t += this.timeInterval;
92 | this.lastTime = thisTime;
93 |
94 | if (this.stage !== undefined) {
95 | this.stage();
96 | }
97 |
98 | if (this.animating) {
99 | requestAnimFrame(function(){
100 | that.animationLoop();
101 | });
102 | }
103 | };
104 |
105 | pi=Math.PI;
106 |
107 | // degrees to radians
108 | function degrees_to_radians(theta) { return theta/180*pi; }
109 |
110 | // polar to cartesian
111 | function polar(r,theta) { return [r*Math.sin(theta), r*Math.cos(theta)]; }
112 |
113 | // gear parameter setup
114 | mm_per_tooth = 2*2*pi; // pixel size of one gear tooth (even though it says millimeters, it's pixels) must be same for two gears to fit each other
115 | pressure_angle= 20; // in degrees, determines gear shape, range is 10 to 40 degrees, most common is 20 degrees
116 | clearance=2; // freedom between two gear centers
117 | backlash=2; // freedom between two gear contact points
118 | axle_radius=20; // center hole radius in pixels
119 | ring_margin=20;
120 | pressure_angle = degrees_to_radians ( pressure_angle); // convet degrees to radians
121 |
122 | function make_gear(number_of_teeth, internal, color) {
123 | // Draw an involute gear in your browswer using JavaScript and SVG
124 | // Tested on Internet Explorer 10 and Firefox 22
125 |
126 | // Adapted from: Public Domain Parametric Involute Spur Gear by Leemon Baird, 2011, Leemon@Leemon.com http://www.thingiverse.com/thing:5505
127 |
128 | // see also http://grabcad.com/questions/tutorial-how-to-model-involute-gears-in-solidworks-and-show-design-intent
129 |
130 | // point on involute curve
131 | function q6(b,s,t,d) { return polar(d,s*(iang(b,d)+t)); }
132 |
133 | // unwind this many degrees to go from r1 to r2
134 | function iang(r1,r2) { return Math.sqrt((r2/r1)*(r2/r1) - 1) - Math.acos(r1/r2); }
135 |
136 | // radius a fraction f up the curved side of the tooth
137 | function q7(f,r,b,r2,t,s) { return q6(b,s,t,(1-f)*Math.max(b,r)+f*r2); }
138 |
139 | // rotate an array of 2d points
140 | function rotate ( points_array, angle ) {
141 | var answer =[];
142 | for(var i=0; i numPlanets) {
315 | svg_image.removeChild(planets.pop());
316 | updated = true;
317 | }
318 |
319 | if (gear2Mode === 'sun')
320 | {
321 | planetTeeth = P;//parseInt(document.getElementById("planetTeeth").value);
322 | ringTeeth = R;//parseInt(document.getElementById("ringTeeth").value);
323 | if ((planetTeeth !== P) || (ringTeeth !== R)) {
324 | sunTeeth = ringTeeth-2*planetTeeth;
325 | if (sunTeeth >= 4) {
326 | S = sunTeeth;
327 | P = planetTeeth;
328 | R = ringTeeth;
329 | sun.changeTeeth(S);
330 | planet.changeTeeth(P);
331 | ring.changeTeeth(R);
332 | updated = true;
333 | }
334 | }
335 | //document.getElementById("sunTeeth").value = S;
336 |
337 | carrierSpeed = gear2CarrierSpeed; //parseFloat(document.getElementById("carrierSpeed").value);
338 | ringSpeed = gear2RingSpeed; //parseFloat(document.getElementById("ringSpeed").value);
339 | sunSpeed = (S+R)/S * carrierSpeed - R/S * ringSpeed;
340 | //document.getElementById("sunSpeed").value = sunSpeed.toFixed(3);
341 | }
342 | else if (gear2Mode === 'carrier')
343 | {
344 | sunTeeth = S; //parseInt(document.getElementById("sunTeeth").value);
345 | ringTeeth = R; //parseInt(document.getElementById("ringTeeth").value);
346 | if ((sunTeeth !== S) || (ringTeeth !== R)) {
347 | planetTeeth = Math.floor((ringTeeth-sunTeeth)/2);
348 | if (planetTeeth >= 4) {
349 | S = sunTeeth;
350 | P = planetTeeth;
351 | R = ringTeeth;
352 | sun.changeTeeth(S);
353 | planet.changeTeeth(P);
354 | ring.changeTeeth(R);
355 | updated = true;
356 | }
357 | }
358 | //document.getElementById("planetTeeth").value = P;
359 |
360 | sunSpeed = gear2SunSpeed; //parseFloat(document.getElementById("sunSpeed").value);
361 | ringSpeed = gear2RingSpeed; //parseFloat(document.getElementById("ringSpeed").value);
362 | carrierSpeed = R/(S+R) * ringSpeed + S/(S+R) * sunSpeed;
363 | //document.getElementById("carrierSpeed").value = carrierSpeed.toFixed(3);
364 | }
365 | else if (gear2Mode === 'ring')
366 | {
367 | sunTeeth = S; //parseInt(document.getElementById("sunTeeth").value);
368 | planetTeeth = P; //parseInt(document.getElementById("planetTeeth").value);
369 | if ((sunTeeth !== S) || (planetTeeth !== P)) {
370 | ringTeeth = sunTeeth+2*planetTeeth;
371 | S = sunTeeth;
372 | P = planetTeeth;
373 | R = ringTeeth;
374 | sun.changeTeeth(S);
375 | planet.changeTeeth(P);
376 | ring.changeTeeth(R);
377 | updated = true;
378 | }
379 | //document.getElementById("ringTeeth").value = R;
380 |
381 | sunSpeed = gear2SunSpeed;// parseFloat(document.getElementById("sunSpeed").value);
382 | carrierSpeed = gear2CarrierSpeed; //parseFloat(document.getElementById("carrierSpeed").value);
383 | ringSpeed = (S+R)/R * carrierSpeed - S/R * sunSpeed;
384 | //document.getElementById("ringSpeed").value = ringSpeed.toFixed(3);
385 | }
386 |
387 | //document.getElementById("numPlanetsOut").value = numPlanets;
388 |
389 | //document.getElementById("sunSpeedOut").value = sunSpeed.toFixed(3);
390 | //document.getElementById("carrierSpeedOut").value = carrierSpeed.toFixed(3);
391 | //document.getElementById("ringSpeedOut").value = ringSpeed.toFixed(3);
392 |
393 | //document.getElementById("sunTeethOut").value = S;
394 | //document.getElementById("planetTeethOut").value = P;
395 | //document.getElementById("ringTeethOut").value = R;
396 |
397 | if ((sunSpeed === 0) && (carrierSpeed === 0) && (ringSpeed === 0) && !updated) {
398 | return;
399 | }
400 |
401 | var inc = 2 * Math.PI / 1000 * this.getTimeInterval();
402 | sunAngle += inc * sunSpeed;
403 | carrierAngle += inc * carrierSpeed;
404 | ringAngle += inc * ringSpeed;
405 |
406 | var carrierPoints = [];
407 | var planetOrbitRadius = (S+P)*mm_per_tooth/(2*pi);
408 |
409 | sun.setAttribute("transform", "rotate(" + (sunAngle - 90) + ")");
410 | ring.setAttribute("transform", "rotate(" + (ringAngle - 90 - (1-P%2)*180.0/R) + ")");
411 | for(var i=0; i < planets.length; ++i)
412 | {
413 | planetPosition = carrierAngle + 360*i/planets.length;
414 | planetAngle1 = S * (planetPosition - sunAngle);
415 | planetAngle = R * (ringAngle - planetPosition);
416 | carrierOffset = (planetAngle - planetAngle1) % 360;
417 | while(carrierOffset > 180) carrierOffset -= 360;
418 | while(carrierOffset < -180) carrierOffset += 360;
419 | carrierOffset /= (R+S);
420 | planetPosition += carrierOffset;
421 | //planetAngle = S/P * (planetPosition - sunAngle) + 90 + 180/P;
422 | planetAngle = R/P * (ringAngle - planetPosition) + 90 + 180/P;
423 |
424 | planets[i].setAttribute("transform", "rotate(" + planetPosition + ") translate(" + planetOrbitRadius + ") rotate(" + planetAngle + ")");
425 |
426 | var planetPositionRad = planetPosition * Math.PI/180;
427 | carrierPoints.push([planetOrbitRadius * Math.cos(planetPositionRad),
428 | planetOrbitRadius * Math.sin(planetPositionRad)]);
429 | }
430 | carrier.setAttribute("d", makeCarrier(carrierPoints, planetOrbitRadius));
431 |
432 | updated = false;
433 | });
434 |
435 | anim.start();
436 | };
--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
1 | GNU GENERAL PUBLIC LICENSE
2 | Version 3, 29 June 2007
3 |
4 | Copyright (C) 2007 Free Software Foundation, Inc.
5 | Everyone is permitted to copy and distribute verbatim copies
6 | of this license document, but changing it is not allowed.
7 |
8 | Preamble
9 |
10 | The GNU General Public License is a free, copyleft license for
11 | software and other kinds of works.
12 |
13 | The licenses for most software and other practical works are designed
14 | to take away your freedom to share and change the works. By contrast,
15 | the GNU General Public License is intended to guarantee your freedom to
16 | share and change all versions of a program--to make sure it remains free
17 | software for all its users. We, the Free Software Foundation, use the
18 | GNU General Public License for most of our software; it applies also to
19 | any other work released this way by its authors. You can apply it to
20 | your programs, too.
21 |
22 | When we speak of free software, we are referring to freedom, not
23 | price. Our General Public Licenses are designed to make sure that you
24 | have the freedom to distribute copies of free software (and charge for
25 | them if you wish), that you receive source code or can get it if you
26 | want it, that you can change the software or use pieces of it in new
27 | free programs, and that you know you can do these things.
28 |
29 | To protect your rights, we need to prevent others from denying you
30 | these rights or asking you to surrender the rights. Therefore, you have
31 | certain responsibilities if you distribute copies of the software, or if
32 | you modify it: responsibilities to respect the freedom of others.
33 |
34 | For example, if you distribute copies of such a program, whether
35 | gratis or for a fee, you must pass on to the recipients the same
36 | freedoms that you received. You must make sure that they, too, receive
37 | or can get the source code. And you must show them these terms so they
38 | know their rights.
39 |
40 | Developers that use the GNU GPL protect your rights with two steps:
41 | (1) assert copyright on the software, and (2) offer you this License
42 | giving you legal permission to copy, distribute and/or modify it.
43 |
44 | For the developers' and authors' protection, the GPL clearly explains
45 | that there is no warranty for this free software. For both users' and
46 | authors' sake, the GPL requires that modified versions be marked as
47 | changed, so that their problems will not be attributed erroneously to
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49 |
50 | Some devices are designed to deny users access to install or run
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60 |
61 | Finally, every program is threatened constantly by software patents.
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64 | avoid the special danger that patents applied to a free program could
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68 | The precise terms and conditions for copying, distribution and
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70 |
71 | TERMS AND CONDITIONS
72 |
73 | 0. Definitions.
74 |
75 | "This License" refers to version 3 of the GNU General Public License.
76 |
77 | "Copyright" also means copyright-like laws that apply to other kinds of
78 | works, such as semiconductor masks.
79 |
80 | "The Program" refers to any copyrightable work licensed under this
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83 |
84 | To "modify" a work means to copy from or adapt all or part of the work
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89 | A "covered work" means either the unmodified Program or a work based
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92 | To "propagate" a work means to do anything with it that, without
93 | permission, would make you directly or secondarily liable for
94 | infringement under applicable copyright law, except executing it on a
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111 |
112 | 1. Source Code.
113 |
114 | The "source code" for a work means the preferred form of the work
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150 |
151 | The Corresponding Source for a work in source code form is that
152 | same work.
153 |
154 | 2. Basic Permissions.
155 |
156 | All rights granted under this License are granted for the term of
157 | copyright on the Program, and are irrevocable provided the stated
158 | conditions are met. This License explicitly affirms your unlimited
159 | permission to run the unmodified Program. The output from running a
160 | covered work is covered by this License only if the output, given its
161 | content, constitutes a covered work. This License acknowledges your
162 | rights of fair use or other equivalent, as provided by copyright law.
163 |
164 | You may make, run and propagate covered works that you do not
165 | convey, without conditions so long as your license otherwise remains
166 | in force. You may convey covered works to others for the sole purpose
167 | of having them make modifications exclusively for you, or provide you
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174 |
175 | Conveying under any other circumstances is permitted solely under
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179 | 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
180 |
181 | No covered work shall be deemed part of an effective technological
182 | measure under any applicable law fulfilling obligations under article
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186 |
187 | When you convey a covered work, you waive any legal power to forbid
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192 | users, your or third parties' legal rights to forbid circumvention of
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195 | 4. Conveying Verbatim Copies.
196 |
197 | You may convey verbatim copies of the Program's source code as you
198 | receive it, in any medium, provided that you conspicuously and
199 | appropriately publish on each copy an appropriate copyright notice;
200 | keep intact all notices stating that this License and any
201 | non-permissive terms added in accord with section 7 apply to the code;
202 | keep intact all notices of the absence of any warranty; and give all
203 | recipients a copy of this License along with the Program.
204 |
205 | You may charge any price or no price for each copy that you convey,
206 | and you may offer support or warranty protection for a fee.
207 |
208 | 5. Conveying Modified Source Versions.
209 |
210 | You may convey a work based on the Program, or the modifications to
211 | produce it from the Program, in the form of source code under the
212 | terms of section 4, provided that you also meet all of these conditions:
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214 | a) The work must carry prominent notices stating that you modified
215 | it, and giving a relevant date.
216 |
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220 | "keep intact all notices".
221 |
222 | c) You must license the entire work, as a whole, under this
223 | License to anyone who comes into possession of a copy. This
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226 | regardless of how they are packaged. This License gives no
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228 | invalidate such permission if you have separately received it.
229 |
230 | d) If the work has interactive user interfaces, each must display
231 | Appropriate Legal Notices; however, if the Program has interactive
232 | interfaces that do not display Appropriate Legal Notices, your
233 | work need not make them do so.
234 |
235 | A compilation of a covered work with other separate and independent
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237 | and which are not combined with it such as to form a larger program,
238 | in or on a volume of a storage or distribution medium, is called an
239 | "aggregate" if the compilation and its resulting copyright are not
240 | used to limit the access or legal rights of the compilation's users
241 | beyond what the individual works permit. Inclusion of a covered work
242 | in an aggregate does not cause this License to apply to the other
243 | parts of the aggregate.
244 |
245 | 6. Conveying Non-Source Forms.
246 |
247 | You may convey a covered work in object code form under the terms
248 | of sections 4 and 5, provided that you also convey the
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250 | in one of these ways:
251 |
252 | a) Convey the object code in, or embodied in, a physical product
253 | (including a physical distribution medium), accompanied by the
254 | Corresponding Source fixed on a durable physical medium
255 | customarily used for software interchange.
256 |
257 | b) Convey the object code in, or embodied in, a physical product
258 | (including a physical distribution medium), accompanied by a
259 | written offer, valid for at least three years and valid for as
260 | long as you offer spare parts or customer support for that product
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262 | copy of the Corresponding Source for all the software in the
263 | product that is covered by this License, on a durable physical
264 | medium customarily used for software interchange, for a price no
265 | more than your reasonable cost of physically performing this
266 | conveying of source, or (2) access to copy the
267 | Corresponding Source from a network server at no charge.
268 |
269 | c) Convey individual copies of the object code with a copy of the
270 | written offer to provide the Corresponding Source. This
271 | alternative is allowed only occasionally and noncommercially, and
272 | only if you received the object code with such an offer, in accord
273 | with subsection 6b.
274 |
275 | d) Convey the object code by offering access from a designated
276 | place (gratis or for a charge), and offer equivalent access to the
277 | Corresponding Source in the same way through the same place at no
278 | further charge. You need not require recipients to copy the
279 | Corresponding Source along with the object code. If the place to
280 | copy the object code is a network server, the Corresponding Source
281 | may be on a different server (operated by you or a third party)
282 | that supports equivalent copying facilities, provided you maintain
283 | clear directions next to the object code saying where to find the
284 | Corresponding Source. Regardless of what server hosts the
285 | Corresponding Source, you remain obligated to ensure that it is
286 | available for as long as needed to satisfy these requirements.
287 |
288 | e) Convey the object code using peer-to-peer transmission, provided
289 | you inform other peers where the object code and Corresponding
290 | Source of the work are being offered to the general public at no
291 | charge under subsection 6d.
292 |
293 | A separable portion of the object code, whose source code is excluded
294 | from the Corresponding Source as a System Library, need not be
295 | included in conveying the object code work.
296 |
297 | A "User Product" is either (1) a "consumer product", which means any
298 | tangible personal property which is normally used for personal, family,
299 | or household purposes, or (2) anything designed or sold for incorporation
300 | into a dwelling. In determining whether a product is a consumer product,
301 | doubtful cases shall be resolved in favor of coverage. For a particular
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303 | typical or common use of that class of product, regardless of the status
304 | of the particular user or of the way in which the particular user
305 | actually uses, or expects or is expected to use, the product. A product
306 | is a consumer product regardless of whether the product has substantial
307 | commercial, industrial or non-consumer uses, unless such uses represent
308 | the only significant mode of use of the product.
309 |
310 | "Installation Information" for a User Product means any methods,
311 | procedures, authorization keys, or other information required to install
312 | and execute modified versions of a covered work in that User Product from
313 | a modified version of its Corresponding Source. The information must
314 | suffice to ensure that the continued functioning of the modified object
315 | code is in no case prevented or interfered with solely because
316 | modification has been made.
317 |
318 | If you convey an object code work under this section in, or with, or
319 | specifically for use in, a User Product, and the conveying occurs as
320 | part of a transaction in which the right of possession and use of the
321 | User Product is transferred to the recipient in perpetuity or for a
322 | fixed term (regardless of how the transaction is characterized), the
323 | Corresponding Source conveyed under this section must be accompanied
324 | by the Installation Information. But this requirement does not apply
325 | if neither you nor any third party retains the ability to install
326 | modified object code on the User Product (for example, the work has
327 | been installed in ROM).
328 |
329 | The requirement to provide Installation Information does not include a
330 | requirement to continue to provide support service, warranty, or updates
331 | for a work that has been modified or installed by the recipient, or for
332 | the User Product in which it has been modified or installed. Access to a
333 | network may be denied when the modification itself materially and
334 | adversely affects the operation of the network or violates the rules and
335 | protocols for communication across the network.
336 |
337 | Corresponding Source conveyed, and Installation Information provided,
338 | in accord with this section must be in a format that is publicly
339 | documented (and with an implementation available to the public in
340 | source code form), and must require no special password or key for
341 | unpacking, reading or copying.
342 |
343 | 7. Additional Terms.
344 |
345 | "Additional permissions" are terms that supplement the terms of this
346 | License by making exceptions from one or more of its conditions.
347 | Additional permissions that are applicable to the entire Program shall
348 | be treated as though they were included in this License, to the extent
349 | that they are valid under applicable law. If additional permissions
350 | apply only to part of the Program, that part may be used separately
351 | under those permissions, but the entire Program remains governed by
352 | this License without regard to the additional permissions.
353 |
354 | When you convey a copy of a covered work, you may at your option
355 | remove any additional permissions from that copy, or from any part of
356 | it. (Additional permissions may be written to require their own
357 | removal in certain cases when you modify the work.) You may place
358 | additional permissions on material, added by you to a covered work,
359 | for which you have or can give appropriate copyright permission.
360 |
361 | Notwithstanding any other provision of this License, for material you
362 | add to a covered work, you may (if authorized by the copyright holders of
363 | that material) supplement the terms of this License with terms:
364 |
365 | a) Disclaiming warranty or limiting liability differently from the
366 | terms of sections 15 and 16 of this License; or
367 |
368 | b) Requiring preservation of specified reasonable legal notices or
369 | author attributions in that material or in the Appropriate Legal
370 | Notices displayed by works containing it; or
371 |
372 | c) Prohibiting misrepresentation of the origin of that material, or
373 | requiring that modified versions of such material be marked in
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375 |
376 | d) Limiting the use for publicity purposes of names of licensors or
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379 | e) Declining to grant rights under trademark law for use of some
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381 |
382 | f) Requiring indemnification of licensors and authors of that
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385 | any liability that these contractual assumptions directly impose on
386 | those licensors and authors.
387 |
388 | All other non-permissive additional terms are considered "further
389 | restrictions" within the meaning of section 10. If the Program as you
390 | received it, or any part of it, contains a notice stating that it is
391 | governed by this License along with a term that is a further
392 | restriction, you may remove that term. If a license document contains
393 | a further restriction but permits relicensing or conveying under this
394 | License, you may add to a covered work material governed by the terms
395 | of that license document, provided that the further restriction does
396 | not survive such relicensing or conveying.
397 |
398 | If you add terms to a covered work in accord with this section, you
399 | must place, in the relevant source files, a statement of the
400 | additional terms that apply to those files, or a notice indicating
401 | where to find the applicable terms.
402 |
403 | Additional terms, permissive or non-permissive, may be stated in the
404 | form of a separately written license, or stated as exceptions;
405 | the above requirements apply either way.
406 |
407 | 8. Termination.
408 |
409 | You may not propagate or modify a covered work except as expressly
410 | provided under this License. Any attempt otherwise to propagate or
411 | modify it is void, and will automatically terminate your rights under
412 | this License (including any patent licenses granted under the third
413 | paragraph of section 11).
414 |
415 | However, if you cease all violation of this License, then your
416 | license from a particular copyright holder is reinstated (a)
417 | provisionally, unless and until the copyright holder explicitly and
418 | finally terminates your license, and (b) permanently, if the copyright
419 | holder fails to notify you of the violation by some reasonable means
420 | prior to 60 days after the cessation.
421 |
422 | Moreover, your license from a particular copyright holder is
423 | reinstated permanently if the copyright holder notifies you of the
424 | violation by some reasonable means, this is the first time you have
425 | received notice of violation of this License (for any work) from that
426 | copyright holder, and you cure the violation prior to 30 days after
427 | your receipt of the notice.
428 |
429 | Termination of your rights under this section does not terminate the
430 | licenses of parties who have received copies or rights from you under
431 | this License. If your rights have been terminated and not permanently
432 | reinstated, you do not qualify to receive new licenses for the same
433 | material under section 10.
434 |
435 | 9. Acceptance Not Required for Having Copies.
436 |
437 | You are not required to accept this License in order to receive or
438 | run a copy of the Program. Ancillary propagation of a covered work
439 | occurring solely as a consequence of using peer-to-peer transmission
440 | to receive a copy likewise does not require acceptance. However,
441 | nothing other than this License grants you permission to propagate or
442 | modify any covered work. These actions infringe copyright if you do
443 | not accept this License. Therefore, by modifying or propagating a
444 | covered work, you indicate your acceptance of this License to do so.
445 |
446 | 10. Automatic Licensing of Downstream Recipients.
447 |
448 | Each time you convey a covered work, the recipient automatically
449 | receives a license from the original licensors, to run, modify and
450 | propagate that work, subject to this License. You are not responsible
451 | for enforcing compliance by third parties with this License.
452 |
453 | An "entity transaction" is a transaction transferring control of an
454 | organization, or substantially all assets of one, or subdividing an
455 | organization, or merging organizations. If propagation of a covered
456 | work results from an entity transaction, each party to that
457 | transaction who receives a copy of the work also receives whatever
458 | licenses to the work the party's predecessor in interest had or could
459 | give under the previous paragraph, plus a right to possession of the
460 | Corresponding Source of the work from the predecessor in interest, if
461 | the predecessor has it or can get it with reasonable efforts.
462 |
463 | You may not impose any further restrictions on the exercise of the
464 | rights granted or affirmed under this License. For example, you may
465 | not impose a license fee, royalty, or other charge for exercise of
466 | rights granted under this License, and you may not initiate litigation
467 | (including a cross-claim or counterclaim in a lawsuit) alleging that
468 | any patent claim is infringed by making, using, selling, offering for
469 | sale, or importing the Program or any portion of it.
470 |
471 | 11. Patents.
472 |
473 | A "contributor" is a copyright holder who authorizes use under this
474 | License of the Program or a work on which the Program is based. The
475 | work thus licensed is called the contributor's "contributor version".
476 |
477 | A contributor's "essential patent claims" are all patent claims
478 | owned or controlled by the contributor, whether already acquired or
479 | hereafter acquired, that would be infringed by some manner, permitted
480 | by this License, of making, using, or selling its contributor version,
481 | but do not include claims that would be infringed only as a
482 | consequence of further modification of the contributor version. For
483 | purposes of this definition, "control" includes the right to grant
484 | patent sublicenses in a manner consistent with the requirements of
485 | this License.
486 |
487 | Each contributor grants you a non-exclusive, worldwide, royalty-free
488 | patent license under the contributor's essential patent claims, to
489 | make, use, sell, offer for sale, import and otherwise run, modify and
490 | propagate the contents of its contributor version.
491 |
492 | In the following three paragraphs, a "patent license" is any express
493 | agreement or commitment, however denominated, not to enforce a patent
494 | (such as an express permission to practice a patent or covenant not to
495 | sue for patent infringement). To "grant" such a patent license to a
496 | party means to make such an agreement or commitment not to enforce a
497 | patent against the party.
498 |
499 | If you convey a covered work, knowingly relying on a patent license,
500 | and the Corresponding Source of the work is not available for anyone
501 | to copy, free of charge and under the terms of this License, through a
502 | publicly available network server or other readily accessible means,
503 | then you must either (1) cause the Corresponding Source to be so
504 | available, or (2) arrange to deprive yourself of the benefit of the
505 | patent license for this particular work, or (3) arrange, in a manner
506 | consistent with the requirements of this License, to extend the patent
507 | license to downstream recipients. "Knowingly relying" means you have
508 | actual knowledge that, but for the patent license, your conveying the
509 | covered work in a country, or your recipient's use of the covered work
510 | in a country, would infringe one or more identifiable patents in that
511 | country that you have reason to believe are valid.
512 |
513 | If, pursuant to or in connection with a single transaction or
514 | arrangement, you convey, or propagate by procuring conveyance of, a
515 | covered work, and grant a patent license to some of the parties
516 | receiving the covered work authorizing them to use, propagate, modify
517 | or convey a specific copy of the covered work, then the patent license
518 | you grant is automatically extended to all recipients of the covered
519 | work and works based on it.
520 |
521 | A patent license is "discriminatory" if it does not include within
522 | the scope of its coverage, prohibits the exercise of, or is
523 | conditioned on the non-exercise of one or more of the rights that are
524 | specifically granted under this License. You may not convey a covered
525 | work if you are a party to an arrangement with a third party that is
526 | in the business of distributing software, under which you make payment
527 | to the third party based on the extent of your activity of conveying
528 | the work, and under which the third party grants, to any of the
529 | parties who would receive the covered work from you, a discriminatory
530 | patent license (a) in connection with copies of the covered work
531 | conveyed by you (or copies made from those copies), or (b) primarily
532 | for and in connection with specific products or compilations that
533 | contain the covered work, unless you entered into that arrangement,
534 | or that patent license was granted, prior to 28 March 2007.
535 |
536 | Nothing in this License shall be construed as excluding or limiting
537 | any implied license or other defenses to infringement that may
538 | otherwise be available to you under applicable patent law.
539 |
540 | 12. No Surrender of Others' Freedom.
541 |
542 | If conditions are imposed on you (whether by court order, agreement or
543 | otherwise) that contradict the conditions of this License, they do not
544 | excuse you from the conditions of this License. If you cannot convey a
545 | covered work so as to satisfy simultaneously your obligations under this
546 | License and any other pertinent obligations, then as a consequence you may
547 | not convey it at all. For example, if you agree to terms that obligate you
548 | to collect a royalty for further conveying from those to whom you convey
549 | the Program, the only way you could satisfy both those terms and this
550 | License would be to refrain entirely from conveying the Program.
551 |
552 | 13. Use with the GNU Affero General Public License.
553 |
554 | Notwithstanding any other provision of this License, you have
555 | permission to link or combine any covered work with a work licensed
556 | under version 3 of the GNU Affero General Public License into a single
557 | combined work, and to convey the resulting work. The terms of this
558 | License will continue to apply to the part which is the covered work,
559 | but the special requirements of the GNU Affero General Public License,
560 | section 13, concerning interaction through a network will apply to the
561 | combination as such.
562 |
563 | 14. Revised Versions of this License.
564 |
565 | The Free Software Foundation may publish revised and/or new versions of
566 | the GNU General Public License from time to time. Such new versions will
567 | be similar in spirit to the present version, but may differ in detail to
568 | address new problems or concerns.
569 |
570 | Each version is given a distinguishing version number. If the
571 | Program specifies that a certain numbered version of the GNU General
572 | Public License "or any later version" applies to it, you have the
573 | option of following the terms and conditions either of that numbered
574 | version or of any later version published by the Free Software
575 | Foundation. If the Program does not specify a version number of the
576 | GNU General Public License, you may choose any version ever published
577 | by the Free Software Foundation.
578 |
579 | If the Program specifies that a proxy can decide which future
580 | versions of the GNU General Public License can be used, that proxy's
581 | public statement of acceptance of a version permanently authorizes you
582 | to choose that version for the Program.
583 |
584 | Later license versions may give you additional or different
585 | permissions. However, no additional obligations are imposed on any
586 | author or copyright holder as a result of your choosing to follow a
587 | later version.
588 |
589 | 15. Disclaimer of Warranty.
590 |
591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
599 |
600 | 16. Limitation of Liability.
601 |
602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
610 | SUCH DAMAGES.
611 |
612 | 17. Interpretation of Sections 15 and 16.
613 |
614 | If the disclaimer of warranty and limitation of liability provided
615 | above cannot be given local legal effect according to their terms,
616 | reviewing courts shall apply local law that most closely approximates
617 | an absolute waiver of all civil liability in connection with the
618 | Program, unless a warranty or assumption of liability accompanies a
619 | copy of the Program in return for a fee.
620 |
621 | END OF TERMS AND CONDITIONS
622 |
623 | How to Apply These Terms to Your New Programs
624 |
625 | If you develop a new program, and you want it to be of the greatest
626 | possible use to the public, the best way to achieve this is to make it
627 | free software which everyone can redistribute and change under these terms.
628 |
629 | To do so, attach the following notices to the program. It is safest
630 | to attach them to the start of each source file to most effectively
631 | state the exclusion of warranty; and each file should have at least
632 | the "copyright" line and a pointer to where the full notice is found.
633 |
634 |
635 | Copyright (C)
636 |
637 | This program is free software: you can redistribute it and/or modify
638 | it under the terms of the GNU General Public License as published by
639 | the Free Software Foundation, either version 3 of the License, or
640 | (at your option) any later version.
641 |
642 | This program is distributed in the hope that it will be useful,
643 | but WITHOUT ANY WARRANTY; without even the implied warranty of
644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
645 | GNU General Public License for more details.
646 |
647 | You should have received a copy of the GNU General Public License
648 | along with this program. If not, see .
649 |
650 | Also add information on how to contact you by electronic and paper mail.
651 |
652 | If the program does terminal interaction, make it output a short
653 | notice like this when it starts in an interactive mode:
654 |
655 | Copyright (C)
656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
657 | This is free software, and you are welcome to redistribute it
658 | under certain conditions; type `show c' for details.
659 |
660 | The hypothetical commands `show w' and `show c' should show the appropriate
661 | parts of the General Public License. Of course, your program's commands
662 | might be different; for a GUI interface, you would use an "about box".
663 |
664 | You should also get your employer (if you work as a programmer) or school,
665 | if any, to sign a "copyright disclaimer" for the program, if necessary.
666 | For more information on this, and how to apply and follow the GNU GPL, see
667 | .
668 |
669 | The GNU General Public License does not permit incorporating your program
670 | into proprietary programs. If your program is a subroutine library, you
671 | may consider it more useful to permit linking proprietary applications with
672 | the library. If this is what you want to do, use the GNU Lesser General
673 | Public License instead of this License. But first, please read
674 | .
675 |
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