├── README.md
└── blender_curve_export.py


/README.md:
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 1 | # Blender curve threejs export
 2 | 
 3 | Used with an UI by [Blender_GLTF_Scripts](https://github.com/utsuboco/blender_gltf_scripts)
 4 | 
 5 | Will generate an es6 file with all the curves of your Blender scene, already formated for Threejs.
 6 | 
 7 | 
 8 | ## Usage:
 9 | 
10 | ```jsx
11 | import {curveA} from './BlenderFileName.curves'
12 | 
13 | const points = curveA()
14 | console.log(points) // <-- [THREE.Vector3()]
15 | const path = new CatmullRomCurve3(points)
16 | ```
17 | 
18 | ## Template generated:
19 | ```jsx
20 | import * as THREE from 'three';
21 | 
22 | const format = () => {
23 |   for (var i = 0; i < points.length; i++) {
24 |     var x = points[i][0];
25 |     var y = points[i][1];
26 |     var z = points[i][2];
27 |     points[i] = new THREE.Vector3(x, z, -y);
28 |   }
29 |   return points
30 | }
31 | 
32 | export const curveA = () => {
33 |   const points = [...] // <-- exported from blender
34 |   return format(points);
35 | }
36 | 
37 | export const curveB = () => {
38 |   const points = [...] // <-- exported from blender
39 |   return format(points);
40 | }
41 | ```
42 | 
43 | 


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/blender_curve_export.py:
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 1 | import bpy
 2 | import os
 3 | 
 4 | 
 5 | currPath = os.path.splitext(bpy.data.filepath)[0]+ ".curves.js"
 6 | file = open(currPath, "w") 
 7 | file.write('import * as THREE from \'three\';\n')
 8 | 
 9 | file.write("const format = (points) => {\n")
10 | file.write("for (var i = 0; i < points.length; i++) {\n")
11 | file.write("  var x = points[i][0];\n")
12 | file.write("  var y = points[i][1];\n")
13 | file.write("  var z = points[i][2];\n")
14 | file.write("  points[i] = new THREE.Vector3(x, z, -y);\n")
15 | file.write("}\n")
16 | file.write("return points;\n")
17 | file.write("}\n")
18 | 
19 | for ob in bpy.data.objects.values() : 
20 |   if ob.type == 'CURVE' :
21 |     file.write('\n')
22 |     file.write("export const %s = () => {\n const points = [\n" % ob.name.replace('.', ''))
23 |     for spline in ob.data.splines :
24 |       curvetype = spline.type
25 |       print('curve type:', curvetype)
26 | 
27 |       if curvetype == 'NURBS' or 'POLY':
28 |           if len(spline.points) > 0 :
29 |             for bezier_point in spline.points.values() : 
30 |               co           = bezier_point.co @ ob.matrix_world
31 |               file.write("[%.3f, %.3f, %.3f],  " % (co.x, co.y, co.z ))
32 | 
33 |       if curvetype == 'BEZIER':
34 |           if len(spline.bezier_points) > 0 :
35 |             for bezier_point in spline.bezier_points.values() : 
36 |               co           = bezier_point.co @ ob.matrix_world
37 |               file.write("[%.3f, %.3f, %.3f],  " % (co.x, co.y, co.z ))
38 |             
39 |     file.write("]\n")
40 |     file.write("return format(points);\n")
41 |     file.write("}\n")
42 | file.write("\n")
43 | file.close()
44 | 


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