blender导出Three.js(.js)插件

# ##### BEGIN GPL LICENSE BLOCK ##### # # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU General Public License # as published by the Free Software Foundation; either version 2 # of the License, or (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software Foundation, # Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. # # ##### END GPL LICENSE BLOCK ##### """ Blender exporter for Three.js (ASCII JSON format). TODO - binary format """ import bpy import mathutils import shutil import os import os.path import math import operator import random # ##################################################### # Configuration # ##################################################### DEFAULTS = { "bgcolor" : [0, 0, 0], "bgalpha" : 1.0, "position" : [0, 0, 0], "rotation" : [0, 0, 0], "scale" : [1, 1, 1], "camera" : { "name" : "default_camera", "type" : "PerspectiveCamera", "near" : 1, "far" : 10000, "fov" : 60, "aspect": 1.333, "position" : [0, 0, 10], "target" : [0, 0, 0] }, "light" : { "name" : "default_light", "type" : "DirectionalLight", "direction" : [0, 1, 1], "color" : [1, 1, 1], "intensity" : 0.8 } } ROTATE_X_PI2 = mathutils.Quaternion((1.0, 0.0, 0.0), math.radians(-90.0)).to_matrix().to_4x4() # default colors for debugging (each material gets one distinct color): # white, red, green, blue, yellow, cyan, magenta COLORS = [0xeeeeee, 0xee0000, 0x00ee00, 0x0000ee, 0xeeee00, 0x00eeee, 0xee00ee] # skinning MAX_INFLUENCES = 2 # ##################################################### # Templates - scene # ##################################################### TEMPLATE_SCENE_ASCII = """\ { "metadata" : { "formatVersion" : 3.2, "type" : "scene", "sourceFile" : "%(fname)s", "generatedBy" : "Blender 2.7 Exporter", "objects" : %(nobjects)s, "geometries" : %(ngeometries)s, "materials" : %(nmaterials)s, "textures" : %(ntextures)s }, "urlBaseType" : %(basetype)s, %(sections)s "transform" : { "position" : %(position)s, "rotation" : %(rotation)s, "scale" : %(scale)s }, "defaults" : { "bgcolor" : %(bgcolor)s, "bgalpha" : %(bgalpha)f, "camera" : %(defcamera)s } } """ TEMPLATE_SECTION = """ "%s" : { %s }, """ TEMPLATE_OBJECT = """\ %(object_id)s : { "geometry" : %(geometry_id)s, "groups" : [ %(group_id)s ], "material" : %(material_id)s, "position" : %(position)s, "rotation" : %(rotation)s, "quaternion": %(quaternion)s, "scale" : %(scale)s, "visible" : %(visible)s, "castShadow" : %(castShadow)s, "receiveShadow" : %(receiveShadow)s, "doubleSided" : %(doubleSided)s }""" TEMPLATE_EMPTY = """\ %(object_id)s : { "groups" : [ %(group_id)s ], "position" : %(position)s, "rotation" : %(rotation)s, "quaternion": %(quaternion)s, "scale" : %(scale)s }""" TEMPLATE_GEOMETRY_LINK = """\ %(geometry_id)s : { "type" : "ascii", "url" : %(model_file)s }""" TEMPLATE_GEOMETRY_EMBED = """\ %(geometry_id)s : { "type" : "embedded", "id" : %(embed_id)s }""" TEMPLATE_TEXTURE = """\ %(texture_id)s : { "url": %(texture_file)s%(extras)s }""" TEMPLATE_MATERIAL_SCENE = """\ %(material_id)s : { "type": %(type)s, "parameters": { %(parameters)s } }""" TEMPLATE_CAMERA_PERSPECTIVE = """\ %(camera_id)s : { "type" : "PerspectiveCamera", "fov" : %(fov)f, "aspect": %(aspect)f, "near" : %(near)f, "far" : %(far)f, "position": %(position)s, "target" : %(target)s }""" TEMPLATE_CAMERA_ORTHO = """\ %(camera_id)s : { "type" : "OrthographicCamera", "left" : %(left)f, "right" : %(right)f, "top" : %(top)f, "bottom": %(bottom)f, "near" : %(near)f, "far" : %(far)f, "position": %(position)s, "target" : %(target)s }""" TEMPLATE_LIGHT_POINT = """\ %(light_id)s : { "type" : "PointLight", "position" : %(position)s, "rotation" : %(rotation)s, "color" : %(color)d, "distance" : %(distance).3f, "intensity" : %(intensity).3f }""" TEMPLATE_LIGHT_SUN = """\ %(light_id)s : { "type" : "AmbientLight", "position" : %(position)s, "rotation" : %(rotation)s, "color" : %(color)d, "distance" : %(distance).3f, "intensity" : %(intensity).3f }""" TEMPLATE_LIGHT_SPOT = """\ %(light_id)s : { "type" : "SpotLight", "position" : %(position)s, "rotation" : %(rotation)s, "color" : %(color)d, "distance" : %(distance).3f, "intensity" : %(intensity).3f, "use_shadow" : %(use_shadow)d, "angle" : %(angle).3f }""" TEMPLATE_LIGHT_HEMI = """\ %(light_id)s : { "type" : "HemisphereLight", "position" : %(position)s, "rotation" : %(rotation)s, "color" : %(color)d, "distance" : %(distance).3f, "intensity" : %(intensity).3f }""" TEMPLATE_LIGHT_AREA = """\ %(light_id)s : { "type" : "AreaLight", "position" : %(position)s, "rotation" : %(rotation)s, "color" : %(color)d, "distance" : %(distance).3f, "intensity" : %(intensity).3f, "gamma" : %(gamma).3f, "shape" : "%(shape)s", "size" : %(size).3f, "size_y" : %(size_y).3f }""" TEMPLATE_VEC4 = '[ %g, %g, %g, %g ]' TEMPLATE_VEC3 = '[ %g, %g, %g ]' TEMPLATE_VEC2 = '[ %g, %g ]' TEMPLATE_STRING = '"%s"' TEMPLATE_HEX = "0x%06x" # ##################################################### # Templates - model # ##################################################### TEMPLATE_FILE_ASCII = """\ { "metadata" : { "formatVersion" : 3.1, "generatedBy" : "Blender 2.7 Exporter", "vertices" : %(nvertex)d, "faces" : %(nface)d, "normals" : %(nnormal)d, "colors" : %(ncolor)d, "uvs" : [%(nuvs)s], "materials" : %(nmaterial)d, "morphTargets" : %(nmorphTarget)d, "bones" : %(nbone)d }, %(model)s } """ TEMPLATE_MODEL_ASCII = """\ "scale" : %(scale)f, "materials" : [%(materials)s], "vertices" : [%(vertices)s], "morphTargets" : [%(morphTargets)s], "normals" : [%(normals)s], "colors" : [%(colors)s], "uvs" : [%(uvs)s], "faces" : [%(faces)s], "bones" : [%(bones)s], "skinIndices" : [%(indices)s], "skinWeights" : [%(weights)s], "animations" : [%(animations)s] """ TEMPLATE_VERTEX = "%g,%g,%g" TEMPLATE_VERTEX_TRUNCATE = "%d,%d,%d" TEMPLATE_N = "%g,%g,%g" TEMPLATE_UV = "%g,%g" TEMPLATE_C = "%d" # ##################################################### # Utils # ##################################################### def veckey3(x,y,z): return round(x, 6), round(y, 6), round(z, 6) def veckey3d(v): return veckey3(v.x, v.y, v.z) def veckey2d(v): return round(v[0], 6), round(v[1], 6) def get_faces(obj): if hasattr(obj, "tessfaces"): return obj.tessfaces else: return obj.faces def get_normal_indices(v, normals, mesh): n = [] mv = mesh.vertices for i in v: normal = mv[i].normal key = veckey3d(normal) n.append( normals[key] ) return n def get_uv_indices(face_index, uvs, mesh, layer_index): uv = [] uv_layer = mesh.tessface_uv_textures[layer_index].data for i in uv_layer[face_index].uv: uv.append( uvs[veckey2d(i)] ) return uv def get_color_indices(face_index, colors, mesh): c = [] color_layer = mesh.tessface_vertex_colors.active.data face_colors = color_layer[face_index] face_colors = face_colors.color1, face_colors.color2, face_colors.color3, face_colors.color4 for i in face_colors: