Как вы можете экспортировать 3d модель из Cinema4D в three.js?

Question

Если у меня есть сетка, смоделированная в Cinema 4D, как ее можно экспортировать для three.js 3D JS Engine?

Кроме того, было бы удобно экспортировать материал цвета для полигонов выборов.

Answer 1

Для этого просто написал еще один скрипт python для Cinema4D.

Подробнее о disturb media blog и wiki.

Для справки, я перечисляю источник здесь:

''' 
author : "George Profenza" 
url : ("disturb", "disturbmedia.com/blog","My blog, http://tomaterial.blogspot.com") 

Export meshes the three.js 3D Engine by mr.doob's et al. 

More details on the engine here: 
https://github.com/mrdoob/three.js 

Currently supports UVs. If the model doesn't display correctly 
you might need to reverse some normals/do some cleanup. 
Also, if you use Selection Tags and basic ColorMaterials, 
the colours will be picked up as face colors. Call autoColor() on the 
model you use for this. 
The mesh transformations(position, rotation, scale) are saved 
and you can get them using: getPosition(), getRotation() and getScale() 
each returning a THREE.Vector3 

In short 
var myGeom = new myC4DGeom(); 
var myModel = new THREE.Mesh(myGeom, new THREE.MeshFaceMaterial()); 
//set transforms 
model.position = myGeom.getPosition() 
model.rotation = myGeom.getRotation() 
model.scale = myGeom.getScale() 
//set selection tags colours 
myGeom.autoColor() 

More details on this exporter and more js examples here: 
https://github.com/orgicus/three.js 

Have fun! 

This script requires Cinema 4D R11.5 minimum and the Py4D Plugin: 
http://www.py4d.com/get-py4d/ 
''' 

import c4d 
from c4d import documents,UVWTag,storage 
from c4d.utils import * 
from c4d import symbols as sy, plugins, utils, bitmaps, gui 
import math 
import re 

# utils 
clean = lambda varStr: re.sub('\W|^(?=\d)','_', varStr) 
# from Active State's Python recipies: http://code.activestate.com/recipes/266466-html-colors-tofrom-rgb-tuples/ 
def RGBToHTMLColor(rgb_tuple): 
    return '0x%02x%02x%02x' % rgb_tuple 
def Export(): 
    if not op: return 
    if op.GetType() != 5100: 
      print 'Selected Object is not an editable mesh' 
      return 
    unit = 0.001#for scale 
    fps = doc.GetFps() 
    bd = doc.GetRenderBaseDraw() 
    scr = bd.GetFrameScreen() 
    rd = doc.GetActiveRenderData() 
    name = op.GetName() 
    classname = clean(name) 

    c4dPath = c4d.storage.GeGetC4DPath(sy.C4D_PATH_LIBRARY) 
    jsFile = open(c4dPath+'/scripts/Three.js','r') 
    js = jsFile.read() 
    htmlFile = open(c4dPath+'/scripts/template.html','r') 
    html = htmlFile.read() 
    html = html.replace('%s',classname) 
    code = 'var %s = function() {\n\n\tvar scope = this;\n\n\tTHREE.Geometry.call(this);\n\n' % classname 

    def GetMesh(code): 
     # goto 0 
     doc.SetTime(c4d.BaseTime(0, fps)) 
     c4d.DrawViews(c4d.DA_ONLY_ACTIVE_VIEW|c4d.DA_NO_THREAD|c4d.DA_NO_REDUCTION|c4d.DA_STATICBREAK) 
     c4d.GeSyncMessage(c4d.EVMSG_TIMECHANGED) 
     doc.SetTime(doc.GetTime()) 
     c4d.EventAdd(c4d.EVENT_ANIMATE) 
     SendModelingCommand(command = MCOMMAND_REVERSENORMALS, list = [op], mode = MODIFY_ALL, bc = c4d.BaseContainer(), doc = doc) 

     verts = op.GetPointAll() 
     for v in verts: 
      code += '\tv(%.6f, %.6f, %.6f);\n' % (v.x, -v.y, v.z) 
     code += '\n' 
     ncount = 0 
     uvcount = 0 
     faces = op.GetAllPolygons() 
     normals = op.CreatePhongNormals() 
     ndirection = 1 
     hasUV = False 
     for tag in op.GetTags(): 
      if tag.GetName() == "UVW": 
       uvw = tag 
       hasUV = True 
     for f in faces: 
      if(f.d == f.c): 
       if(normals): 
        code += '\tf3(%d, %d, %d, %.6f, %.6f, %.6f);\n' % (f.a, f.b, f.c, normals[ncount].x*ndirection, normals[ncount].y*ndirection, normals[ncount].z*ndirection) 
       else: 
        code += '\tf3(%d, %d, %d);\n' % (f.a, f.b, f.c) 
      else: 
       if(normals): 
        code += '\tf4(%d, %d, %d, %d, %.6f, %.6f, %.6f);\n' % (f.a, f.b, f.c, f.d, normals[ncount].x*ndirection, normals[ncount].y*ndirection, normals[ncount].z*ndirection) 
       else: 
        code += '\tf4(%d, %d, %d, %d);\n' % (f.a, f.b, f.c, f.d) 
      if hasUV: 
       uv = uvw.Get(uvcount); 
       # uvs += '[Vector('+str(uv[0].x)+','+str(1.0-uv[0].y)+'),Vector('+str(uv[1].x)+','+str(1.0-uv[1].y)+'),Vector('+str(uv[2].x)+','+str(1.0-uv[2].y)+')],' 
       if len(uv) == 4: 
        code += '\tuv(%.6f, %.6f, %.6f, %.6f, %.6f, %.6f, %.6f, %.6f);\n' % (uv[0].x, uv[0].y, uv[1].x, uv[1].y, uv[2].x, uv[2].y, uv[3].x, uv[3].y) 
       else: 
        code += '\tuv(%.6f, %.6f, %.6f, %.6f, %.6f, %.6f);\n' % (uv[0].x, uv[0].y, uv[1].x, uv[1].y, uv[2].x, uv[2].y) 
       ncount += 1 
       uvcount += 1 

     #selection color 
     code +='\n\tscope.colors = {};\n' 
     code +='\tscope.selections = {};\n' 
     selName = '' 
     for tag in op.GetTags(): 
      if(tag.GetType() == 5616): #texture tag 
       material = tag.GetMaterial() 
       color = material[sy.MATERIAL_COLOR_COLOR] 
       tag.SetBit(c4d.BIT_ACTIVE) 
       selName = clean(tag[sy.TEXTURETAG_RESTRICTION]) 
       if len(selName) == 0: print "*** WARNING! *** Missing selection name for material: " + material.GetName() 
       code += '\tscope.colors["'+selName+'"] = '+str(RGBToHTMLColor((color.x*255,color.y*255,color.z*255)))+';\n' 
      if tag.GetType() == 5673: #selection tag 
       # print 'selection: ' + tag.GetName() 
       sel = tag.GetSelection() 
       selName = clean(tag.GetName()) 
       ids = sel.GetAll(op.GetPointCount()) 
       indices = [i for i, e in enumerate(ids) if e != 0] 
       code += '\tscope.selections["'+selName+'"] = '+str(indices)+';\n' 

     code += '\n\tscope.autoColor = function(){\n' 
     code += '\t\tfor(var s in this.selections){\n' 
     code += '\t\t\tfor(var i = 0 ; i < this.selections[s].length; i++) this.faces[this.selections[s][i]].material = [ new THREE.MeshColorFillMaterial(this.colors[s],1) ];\n' 
     code += '\t\t}\n\t}\n' 

     # model position, rotation, scale    rotation x,y,z = H,P,B => three.js x,y,z is P,H,B => y,x,z 
     p = op.GetPos() 
     r = op.GetRot() 
     s = op.GetScale() 
     code += '\n\tscope.getPosition = function(){\treturn new THREE.Vector3'+str((p.x,p.y,p.z))+';\t}\n' 
     code += '\n\tscope.getRotation = function(){\treturn new THREE.Vector3'+str((r.y,r.x,r.z))+';\t}\n' 
     code += '\n\tscope.getScale = function(){\treturn new THREE.Vector3'+str((s.x,s.y,s.z))+';\t}\n' 

     code += '\n' 
     code += '\tfunction v(x, y, z) {\n\n' 
     code += '\t\tscope.vertices.push(new THREE.Vertex(new THREE.Vector3(x, y, z)));\n\n' 
     code += '\t}\n\n' 
     code += '\tfunction f3(a, b, c, nx, ny, nz) {\n\n' 
     code += '\t\tscope.faces.push(new THREE.Face3(a, b, c, nx && ny && nz ? new THREE.Vector3(nx, ny, nz) : null));\n\n' 
     code += '\t}\n\n' 
     code += '\tfunction f4(a, b, c, d, nx, ny, nz) {\n\n' 
     code += '\t\tscope.faces.push(new THREE.Face4(a, b, c, d, nx && ny && nz ? new THREE.Vector3(nx, ny, nz) : null));\n\n' 
     code += '\t}\n\n' 
     code += '\tfunction uv(u1, v1, u2, v2, u3, v3, u4, v4) {\n\n' 
     code += '\t\tvar uv = [];\n' 
     code += '\t\tuv.push(new THREE.UV(u1, v1));\n' 
     code += '\t\tuv.push(new THREE.UV(u2, v2));\n' 
     code += '\t\tuv.push(new THREE.UV(u3, v3));\n' 
     code += '\t\tif (u4 && v4) uv.push(new THREE.UV(u4, v4));\n' 
     code += '\t\tscope.uvs.push(uv);\n' 
     code += '\t}\n\n' 
     code += '}\n\n' 
     code += '%s.prototype = new THREE.Geometry();\n' % classname 
     code += '%s.prototype.constructor = %s;' % (classname, classname) 

     SendModelingCommand(command = MCOMMAND_REVERSENORMALS, list = [op], mode = MODIFY_ALL, bc = c4d.BaseContainer(), doc = doc) 

     return code 

    code = GetMesh(code) 
    docPath = doc.GetDocumentPath() 
    jspath = docPath+'/'+classname+'.js' 
    htmlpath = docPath+'/'+classname+'.html' 
    file = open(jspath,'w') 
    file.write(code) 
    file.close() 
    file = open(htmlpath,'w') 
    file.write(html) 
    file.close() 
    file = open(docPath+'/Three.js','w') 
    file.write(js) 
    file.close() 
    print 'Export Complete!' 

Export() 

Кроме того, добавлены 'тонкий' экспортеров к repository, который должен производить меньшие .js файлы для моделей

Answer 2

Alirght, попробуйте здесь:

Этот плагин не работает с C4D R12. Поскольку Maxon поглотил Py4D, они сделали выбор, чтобы поглотить объект символов в объект c4d. Я разветвил ваш code и немного задумался, чтобы попытаться исправить минуты различия между Py4D и R12 11.5.

В любом случае, вот plugin cafe post вы сделали, где я еще немного прокомментировал проблемы. Еще раз спасибо за прокладывание пути для удивительности!

Answer 3

Другой вариант - экспортировать как COLLADA/DAE или OBJ и использовать COLLADALoader или OBJLoader.

Answer 4

Если вы получаете ошибку атрибута объекта, вам необходимо обменять вызов GetPos с помощью GetAbsPos в сценарии экспортера three.js (c4d13 +).