├── .gitignore ├── LICENSE ├── README.md ├── mesh_morpher.py └── vertex_animation.py /.gitignore: -------------------------------------------------------------------------------- 1 | /venv 2 | /.vscode 3 | -------------------------------------------------------------------------------- /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. 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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 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Not Unreal Tools 2 | 3 | Modified by **yanorax** 4 | 5 | Vertex Animation add-on tested with **Blender 2.83.16 LTS** and **2.93.1 LTS** 6 | 7 | export_mesh.glb tested with **Godot Engine 3.3** 8 | 9 | ## Changes From Original 10 | 11 | ### Vertex Animation 12 | * Removed UE unit scale and metric system check 13 | * Export mesh UV coords are placed at V = 0.0 instead of V = 0.5 14 | * Frame mesh data is processed in default list order 15 | * New **offsets.exr** and **normals.png** image files are saved into a **vaexport** subfolder in the .blend file path. 16 | 17 | ## Description 18 | A series of tools used to store vertex data in various ways. The data can then used in a game engine to animate meshes via a vertex shader. 19 | 20 | ### Mesh Morpher 21 | Used to store vertex offsets between a meshes shape keys in it's UV layers. Optionally vertex normals from it's second shape key can be stored in it's vertex colors. 22 | 23 | ### Vertex Animation 24 | Used to store vertex offsets and normals of selected mesh objects per frame into image textures. 25 | 26 | ## Getting Started 27 | These tools can be installed as add-ons or ran as scripts. Each tool has a panel located in the 3D View's sidebar under the Unreal Tools tab. 28 | 29 | ### Installing as an Add-on 30 | First download and unzip files into desired directory. 31 | 32 | While in Blender open the user preferences window. 33 | 34 | **Edit > Preferences** 35 | 36 | Navigate the the **add-ons** tab. 37 | 38 | Click the option to **install**. 39 | 40 | A file browser will open. 41 | 42 | Navigate to directory containing the tools. 43 | 44 | Select the tool you want install. 45 | 46 | Then click **install add-on**. 47 | 48 | ### Running as a Script 49 | First download and unzip files into desired directory. 50 | 51 | While in Blender use the text editor to open the tool you want to use. 52 | 53 | Then either click the run script operator (the **arrow** icon in header) or use **alt+p** shortcut. 54 | 55 | ## Authors 56 | 57 | * **Joshua Bogart** 58 | 59 | ## Acknowledgments 60 | * Adapted for Blender from 3ds Max scripts created by **Jonathan Lindquist** at **Epic Games**. 61 | -------------------------------------------------------------------------------- /mesh_morpher.py: -------------------------------------------------------------------------------- 1 | # ##### BEGIN GPL LICENSE BLOCK ##### 2 | # 3 | # This program is free software; you can redistribute it and/or 4 | # modify it under the terms of the GNU General Public License 5 | # as published by the Free Software Foundation; either version 2 6 | # of the License, or (at your option) any later version. 7 | # 8 | # This program is distributed in the hope that it will be useful, 9 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | # GNU General Public License for more details. 12 | # 13 | # You should have received a copy of the GNU General Public License 14 | # along with this program; if not, write to the Free Software Foundation, 15 | # Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 16 | # 17 | # ##### END GPL LICENSE BLOCK ##### 18 | 19 | # 20 | 21 | 22 | bl_info = { 23 | "name": "Mesh Morpher", 24 | "author": "Joshua Bogart", 25 | "version": (1, 0), 26 | "blender": (2, 83, 0), 27 | "location": "View3D > Sidebar > Unreal Tools Tab", 28 | "description": "A tool for storing shape key data for use in a vertex shader.", 29 | "warning": "", 30 | "doc_url": "", 31 | "category": "Unreal Tools", 32 | } 33 | 34 | 35 | import bpy 36 | 37 | 38 | def pack_normals(me): 39 | """Stores normals in a given mesh's vertex colors""" 40 | if not me.vertex_colors: 41 | me.vertex_colors.new() 42 | col = me.vertex_colors[0] 43 | col.name = "normals" 44 | key = me.shape_keys.key_blocks[1] 45 | normals = list(zip(*[iter(key.normals_vertex_get())]*3)) 46 | for loop in me.loops: 47 | r, g, b = normals[loop.vertex_index] 48 | col.data[loop.index].color = ((r + 1) * 0.5, (-g + 1) * 0.5, (b + 1) * 0.5, 1) 49 | 50 | 51 | def get_shape_key_offsets(shape_keys, two_shape_keys=False): 52 | """Return a list of vertex offsets between shape keys""" 53 | keys = shape_keys.key_blocks 54 | offsets = [] 55 | original = keys[0].data 56 | target = keys[1].data 57 | offset = [v1.co - v2.co for v1, v2 in zip(target, original)] 58 | offsets.append(offset) 59 | if two_shape_keys: 60 | target = keys[2].data 61 | offset = [v1.co - v2.co for v1, v2 in zip(target, original)] 62 | offsets.append(offset) 63 | return offsets 64 | 65 | 66 | def pack_offsets(ob, offsets): 67 | """Stores shape key vertex offsets in mesh's UVs""" 68 | me = ob.data 69 | while len(me.uv_layers) < 4: 70 | me.uv_layers.new() 71 | for loop in me.loops: 72 | x1, y1, z1 = offsets[0][loop.vertex_index] 73 | if len(offsets) > 1: 74 | offset = offsets[1][loop.vertex_index] 75 | else: 76 | offset = ob.location 77 | x2, y2, z2 = offset 78 | me.uv_layers[1].data[loop.index].uv = (x2, 1 - (-y2)) 79 | me.uv_layers[2].data[loop.index].uv = (z2, 1 - x1) 80 | me.uv_layers[3].data[loop.index].uv = (-y1, 1 - z1) 81 | 82 | 83 | class MeshMorpherSettings(bpy.types.PropertyGroup): 84 | store_shape_key1_normals: bpy.props.BoolProperty( 85 | name="First Shape Key Normals", 86 | description="Store first shape key's vertex normals in vertex colors", 87 | default=True 88 | ) 89 | two_shape_keys: bpy.props.BoolProperty( 90 | name="Two Shape Keys", 91 | description="Store vertex offsets for first and second shape keys", 92 | default=False 93 | ) 94 | 95 | 96 | class OBJECT_OT_ProcessShapeKeys(bpy.types.Operator): 97 | """Store object's shape key offsets in it's UV layers""" 98 | bl_idname = "object.process_shape_keys" 99 | bl_label = "Process Shape Keys" 100 | 101 | store_shape_key1_normals: bpy.props.BoolProperty( 102 | name="First Shape Key Normals", 103 | default=True 104 | ) 105 | two_shape_keys: bpy.props.BoolProperty( 106 | name="Two Shape Keys", 107 | default=False 108 | ) 109 | 110 | @classmethod 111 | def poll(cls, context): 112 | ob = context.active_object 113 | return ob and ob.type == 'MESH' and ob.mode == 'OBJECT' 114 | 115 | 116 | def execute(self, context): 117 | units = context.scene.unit_settings 118 | ob = context.object 119 | shape_keys = ob.data.shape_keys 120 | if units.system != 'METRIC' or round(units.scale_length, 2) != 0.01: 121 | self.report( 122 | {'ERROR'}, 123 | "Scene Units must be Metric with a Unit Scale of 0.01!" 124 | ) 125 | return {'CANCELLED'} 126 | if not shape_keys: 127 | self.report({'ERROR'}, "Object has no shape keys!") 128 | return {'CANCELLED'} 129 | if len(shape_keys.key_blocks) < 2 + self.two_shape_keys: 130 | self.report({'ERROR'}, "Object needs additional shape keys!") 131 | return {'CANCELLED'} 132 | if self.store_shape_key1_normals: 133 | pack_normals(ob.data) 134 | offsets = get_shape_key_offsets(shape_keys, self.two_shape_keys) 135 | pack_offsets(ob, offsets) 136 | return {'FINISHED'} 137 | 138 | 139 | class VIEW3D_PT_MeshMorpher(bpy.types.Panel): 140 | """Creates a Panel in 3D Viewport""" 141 | bl_label = "Mesh Morpher" 142 | bl_idname = "VIEW3D_PT_mesh_morpher" 143 | bl_space_type = 'VIEW_3D' 144 | bl_region_type = 'UI' 145 | bl_category = "Unreal Tools" 146 | 147 | def draw(self, context): 148 | layout = self.layout 149 | col = layout.column() 150 | props = context.scene.mesh_morpher_settings 151 | col.prop(props, "store_shape_key1_normals") 152 | col.prop(props, "two_shape_keys") 153 | op = col.operator("object.process_shape_keys") 154 | op.store_shape_key1_normals = props.store_shape_key1_normals 155 | op.two_shape_keys = props.two_shape_keys 156 | 157 | 158 | def register(): 159 | bpy.utils.register_class(MeshMorpherSettings) 160 | bpy.utils.register_class(OBJECT_OT_ProcessShapeKeys) 161 | bpy.utils.register_class(VIEW3D_PT_MeshMorpher) 162 | bpy.types.Scene.mesh_morpher_settings = bpy.props.PointerProperty( 163 | type=MeshMorpherSettings 164 | ) 165 | 166 | 167 | def unregister(): 168 | bpy.utils.unregister_class(MeshMorpherSettings) 169 | bpy.utils.unregister_class(OBJECT_OT_ProcessShapeKeys) 170 | bpy.utils.unregister_class(VIEW3D_PT_MeshMorpher) 171 | del bpy.types.Scene.mesh_morpher_settings 172 | 173 | 174 | if __name__ == "__main__": 175 | register() 176 | -------------------------------------------------------------------------------- /vertex_animation.py: -------------------------------------------------------------------------------- 1 | # ##### BEGIN GPL LICENSE BLOCK ##### 2 | # 3 | # This program is free software; you can redistribute it and/or 4 | # modify it under the terms of the GNU General Public License 5 | # as published by the Free Software Foundation; either version 2 6 | # of the License, or (at your option) any later version. 7 | # 8 | # This program is distributed in the hope that it will be useful, 9 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | # GNU General Public License for more details. 12 | # 13 | # You should have received a copy of the GNU General Public License 14 | # along with this program; if not, write to the Free Software Foundation, 15 | # Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 16 | # 17 | # ##### END GPL LICENSE BLOCK ##### 18 | 19 | # 20 | 21 | 22 | bl_info = { 23 | "name": "Vertex Animation", 24 | "author": "Joshua Bogart", 25 | "version": (1, 0), 26 | "blender": (2, 83, 0), 27 | "location": "View3D > Sidebar > Not Unreal Tools Tab", 28 | "description": "A tool for storing per frame vertex data for use in a vertex shader.", 29 | "warning": "", 30 | "doc_url": "", 31 | "category": "Not Unreal Tools", 32 | } 33 | 34 | 35 | import bpy 36 | import bmesh 37 | import os 38 | 39 | 40 | def get_per_frame_mesh_data(context, data, objects): 41 | """Return a list of combined mesh data per frame""" 42 | meshes = [] 43 | for i in frame_range(context.scene): 44 | context.scene.frame_set(i) 45 | depsgraph = context.evaluated_depsgraph_get() 46 | bm = bmesh.new() 47 | for ob in objects: 48 | eval_object = ob.evaluated_get(depsgraph) 49 | me = data.meshes.new_from_object(eval_object) 50 | me.transform(ob.matrix_world) 51 | bm.from_mesh(me) 52 | data.meshes.remove(me) 53 | me = data.meshes.new("mesh") 54 | bm.to_mesh(me) 55 | bm.free() 56 | me.calc_normals() 57 | meshes.append(me) 58 | return meshes 59 | 60 | 61 | def create_export_mesh_object(context, data, me): 62 | """Return a mesh object with correct UVs""" 63 | while len(me.uv_layers) < 2: 64 | me.uv_layers.new() 65 | uv_layer = me.uv_layers[1] 66 | uv_layer.name = "vertex_anim" 67 | for loop in me.loops: 68 | uv_layer.data[loop.index].uv = ((loop.vertex_index + 0.5)/len(me.vertices), 0.0) 69 | ob = data.objects.new("export_mesh", me) 70 | context.scene.collection.objects.link(ob) 71 | return ob 72 | 73 | 74 | def get_vertex_data(data, meshes): 75 | """Return lists of vertex offsets and normals from a list of mesh data""" 76 | original = meshes[0].vertices 77 | offsets = [] 78 | normals = [] 79 | for me in meshes: #for me in reversed(meshes): 80 | for v in me.vertices: 81 | offset = v.co - original[v.index].co 82 | x, y, z = offset 83 | offsets.extend((x, -y, z, 1)) 84 | x, y, z = v.normal 85 | normals.extend(((x + 1) * 0.5, (-y + 1) * 0.5, (z + 1) * 0.5, 1)) 86 | #if not me.users: 87 | #data.meshes.remove(me) 88 | for me in meshes: 89 | if not me.users: 90 | data.meshes.remove(me) 91 | return offsets, normals 92 | 93 | 94 | def frame_range(scene): 95 | """Return a range object with with scene's frame start, end, and step""" 96 | return range(scene.frame_start, scene.frame_end, scene.frame_step) 97 | 98 | 99 | def bake_vertex_data(context, data, offsets, normals, size): 100 | """Stores vertex offsets and normals in seperate image textures""" 101 | width, height = size 102 | 103 | blend_path = bpy.data.filepath 104 | blend_path = os.path.dirname(bpy.path.abspath(blend_path)) 105 | subfolder_path = os.path.join(blend_path, "vaexport") 106 | if not os.path.exists(subfolder_path): 107 | os.makedirs(subfolder_path) 108 | openexr_filepath = os.path.join(subfolder_path, "offsets.exr") 109 | png_filepath = os.path.join(subfolder_path, "normals.png") 110 | 111 | openexr_export_scene = bpy.data.scenes.new('openexr export scene') 112 | openexr_export_scene.sequencer_colorspace_settings.name = 'Non-Color' 113 | openexr_export_scene.render.image_settings.color_depth = '16' 114 | openexr_export_scene.render.image_settings.color_mode = 'RGBA' 115 | openexr_export_scene.render.image_settings.file_format = 'OPEN_EXR' 116 | openexr_export_scene.render.image_settings.exr_codec = 'NONE' 117 | 118 | if 'offsets' in bpy.data.images: 119 | offset_tex = bpy.data.images['offsets'] 120 | bpy.data.images.remove(offset_tex) 121 | 122 | offset_texture = data.images.new( 123 | name="offsets", 124 | width=width, 125 | height=height, 126 | alpha=True, 127 | float_buffer=True 128 | ) 129 | 130 | offset_texture.file_format = 'OPEN_EXR' 131 | offset_texture.colorspace_settings.name = 'Non-Color' 132 | offset_texture.pixels = offsets 133 | offset_texture.save_render(openexr_filepath, scene=openexr_export_scene) 134 | bpy.data.scenes.remove(openexr_export_scene) 135 | 136 | png_export_scene = bpy.data.scenes.new('png export scene') 137 | png_export_scene.render.image_settings.color_depth = '8' 138 | png_export_scene.render.image_settings.color_mode = 'RGBA' 139 | png_export_scene.render.image_settings.file_format = 'PNG' 140 | png_export_scene.render.image_settings.compression = 15 141 | 142 | if 'normals' in bpy.data.images: 143 | normals_tex = bpy.data.images['normals'] 144 | bpy.data.images.remove(normals_tex) 145 | 146 | normal_texture = data.images.new( 147 | name="normals", 148 | width=width, 149 | height=height, 150 | alpha=True 151 | ) 152 | 153 | normal_texture.file_format = 'PNG' 154 | normal_texture.pixels = normals 155 | normal_texture.save_render(png_filepath, scene=png_export_scene) 156 | bpy.data.scenes.remove(png_export_scene) 157 | 158 | 159 | class OBJECT_OT_ProcessAnimMeshes(bpy.types.Operator): 160 | """Store combined per frame vertex offsets and normals for all 161 | selected mesh objects into seperate image textures""" 162 | bl_idname = "object.process_anim_meshes" 163 | bl_label = "Process Anim Meshes" 164 | 165 | @property 166 | def allowed_modifiers(self): 167 | return [ 168 | 'ARMATURE', 'CAST', 'CURVE', 'DISPLACE', 'HOOK', 169 | 'LAPLACIANDEFORM', 'LATTICE', 'MESH_DEFORM', 170 | 'SHRINKWRAP', 'SIMPLE_DEFORM', 'SMOOTH', 171 | 'CORRECTIVE_SMOOTH', 'LAPLACIANSMOOTH', 172 | 'SURFACE_DEFORM', 'WARP', 'WAVE', 173 | ] 174 | 175 | @classmethod 176 | def poll(cls, context): 177 | ob = context.active_object 178 | return ob and ob.type == 'MESH' and ob.mode == 'OBJECT' 179 | 180 | def execute(self, context): 181 | units = context.scene.unit_settings 182 | data = bpy.data 183 | objects = [ob for ob in context.selected_objects if ob.type == 'MESH'] 184 | vertex_count = sum([len(ob.data.vertices) for ob in objects]) 185 | frame_count = len(frame_range(context.scene)) 186 | for ob in objects: 187 | for mod in ob.modifiers: 188 | if mod.type not in self.allowed_modifiers: 189 | self.report( 190 | {'ERROR'}, 191 | f"Objects with {mod.type.title()} modifiers are not allowed!" 192 | ) 193 | return {'CANCELLED'} 194 | #if units.system != 'METRIC' or round(units.scale_length, 2) != 0.01: 195 | # self.report( 196 | # {'ERROR'}, 197 | # "Scene Unit must be Metric with a Unit Scale of 0.01!" 198 | # ) 199 | # return {'CANCELLED'} 200 | if vertex_count > 8192: 201 | self.report( 202 | {'ERROR'}, 203 | f"Vertex count of {vertex_count :,}, execedes limit of 8,192!" 204 | ) 205 | return {'CANCELLED'} 206 | if frame_count > 8192: 207 | self.report( 208 | {'ERROR'}, 209 | f"Frame count of {frame_count :,}, execedes limit of 8,192!" 210 | ) 211 | return {'CANCELLED'} 212 | meshes = get_per_frame_mesh_data(context, data, objects) 213 | export_mesh_data = meshes[0].copy() 214 | create_export_mesh_object(context, data, export_mesh_data) 215 | offsets, normals = get_vertex_data(data, meshes) 216 | texture_size = vertex_count, frame_count 217 | bake_vertex_data(context, data, offsets, normals, texture_size) 218 | return {'FINISHED'} 219 | 220 | 221 | class VIEW3D_PT_VertexAnimation(bpy.types.Panel): 222 | """Creates a Panel in 3D Viewport""" 223 | bl_label = "Vertex Animation" 224 | bl_idname = "VIEW3D_PT_vertex_animation" 225 | bl_space_type = 'VIEW_3D' 226 | bl_region_type = 'UI' 227 | bl_category = "Not Unreal Tools" 228 | 229 | def draw(self, context): 230 | layout = self.layout 231 | layout.use_property_split = True 232 | layout.use_property_decorate = False 233 | scene = context.scene 234 | col = layout.column(align=True) 235 | col.prop(scene, "frame_start", text="Frame Start") 236 | col.prop(scene, "frame_end", text="End") 237 | col.prop(scene, "frame_step", text="Step") 238 | row = layout.row() 239 | row.operator("object.process_anim_meshes") 240 | 241 | 242 | def register(): 243 | bpy.utils.register_class(OBJECT_OT_ProcessAnimMeshes) 244 | bpy.utils.register_class(VIEW3D_PT_VertexAnimation) 245 | 246 | 247 | def unregister(): 248 | bpy.utils.unregister_class(OBJECT_OT_ProcessAnimMeshes) 249 | bpy.utils.unregister_class(VIEW3D_PT_VertexAnimation) 250 | 251 | 252 | if __name__ == "__main__": 253 | register() 254 | --------------------------------------------------------------------------------