release/io/engine_render_pov.py

   1 import bpy
   2
   3 from math import atan, pi, degrees
   4 import subprocess
   5 import os
   6 import sys
   7 import time
   8
   9 import platform as pltfrm
  10
  11 if pltfrm.architecture()[0] == '64bit':
  12         bitness = 64
  13 else:
  14         bitness = 32
  15
  16 def write_pov(filename, scene=None, info_callback = None):
  17         file = open(filename, 'w')
  18
  19         # Only for testing
  20         if not scene:
  21                 scene = bpy.data.scenes[0]
  22
  23         render = scene.render_data
  24         world = scene.world
  25
  26         # --- taken from fbx exporter
  27         ## This was used to make V, but faster not to do all that
  28         ##valid = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_,.()[]{}'
  29         ##v = range(255)
  30         ##for c in valid: v.remove(ord(c))
  31         v = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,42,43,46,47,58,59,60,61,62,63,64,92,94,96,124,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254]
  32         invalid = ''.join([chr(i) for i in v])
  33         def cleanName(name):
  34                 for ch in invalid:      name = name.replace(ch, '_')
  35                 return name
  36         del v
  37
  38         # --- done with clean name.
  39
  40         def uniqueName(name, nameSeq):
  41
  42                 if name not in nameSeq:
  43                         return name
  44
  45                 name_orig = name
  46                 i = 1
  47                 while name in nameSeq:
  48                         name = '%s_%.3d' % (name_orig, i)
  49                         i+=1
  50
  51                 return name
  52
  53
  54         def writeMatrix(matrix):
  55                 file.write('\tmatrix <%.6f, %.6f, %.6f,  %.6f, %.6f, %.6f,  %.6f, %.6f, %.6f,  %.6f, %.6f, %.6f>\n' %\
  56                 (matrix[0][0], matrix[0][1], matrix[0][2],  matrix[1][0], matrix[1][1], matrix[1][2],  matrix[2][0], matrix[2][1], matrix[2][2],  matrix[3][0], matrix[3][1], matrix[3][2]) )
  57
  58         def writeObjectMaterial(material):
  59                 if material and material.transparency_method=='RAYTRACE':
  60                         file.write('\tinterior { ior %.6f }\n' % material.raytrace_transparency.ior)
  61
  62                         # Other interior args
  63                         # fade_distance 2
  64                         # fade_power [Value]
  65                         # fade_color
  66
  67                         # dispersion
  68                         # dispersion_samples
  69
  70         materialNames = {}
  71         DEF_MAT_NAME = 'Default'
  72         def writeMaterial(material):
  73                 # Assumes only called once on each material
  74
  75                 if material:
  76                         name_orig = material.name
  77                 else:
  78                         name_orig = DEF_MAT_NAME
  79
  80                 name = materialNames[name_orig] = uniqueName(cleanName(name_orig), materialNames)
  81
  82                 file.write('#declare %s = finish {\n' % name)
  83
  84                 if material:
  85                         file.write('\tdiffuse %.3g\n' % material.diffuse_reflection)
  86                         file.write('\tspecular %.3g\n' % material.specular_reflection)
  87
  88                         file.write('\tambient %.3g\n' % material.ambient)
  89                         #file.write('\tambient rgb <%.3g, %.3g, %.3g>\n' % tuple([c*material.ambient for c in world.ambient_color])) # povray blends the global value
  90
  91                         # map hardness between 0.0 and 1.0
  92                         roughness = ((1.0 - ((material.specular_hardness-1.0)/510.0)))
  93                         # scale from 0.0 to 0.1
  94                         roughness *= 0.1
  95                         # add a small value because 0.0 is invalid
  96                         roughness += (1/511.0)
  97
  98                         file.write('\troughness %.3g\n' % roughness)
  99
 100                         # 'phong 70.0 '
 101
 102                         if material.raytrace_mirror.enabled:
 103                                 raytrace_mirror= material.raytrace_mirror
 104                                 if raytrace_mirror.reflect:
 105                                         file.write('\treflection {\n')
 106                                         file.write('\t\trgb <%.3g, %.3g, %.3g>' % tuple(material.mirror_color))
 107                                         file.write('\t\tfresnel 1 falloff %.3g exponent %.3g metallic %.3g} ' % (raytrace_mirror.fresnel, raytrace_mirror.fresnel_fac, raytrace_mirror.reflect))
 108
 109                 else:
 110                         file.write('\tdiffuse 0.8\n')
 111                         file.write('\tspecular 0.2\n')
 112
 113
 114
 115                 # This is written into the object
 116                 '''
 117                 if material and material.transparency_method=='RAYTRACE':
 118                         'interior { ior %.3g} ' % material.raytrace_transparency.ior
 119                 '''
 120
 121                 #file.write('\t\t\tcrand 1.0\n') # Sand granyness
 122                 #file.write('\t\t\tmetallic %.6f\n' % material.spec)
 123                 #file.write('\t\t\tphong %.6f\n' % material.spec)
 124                 #file.write('\t\t\tphong_size %.6f\n' % material.spec)
 125                 #file.write('\t\t\tbrilliance %.6f ' % (material.specular_hardness/256.0) # Like hardness
 126
 127                 file.write('}\n')
 128
 129         def exportCamera():
 130                 camera = scene.camera
 131                 matrix = camera.matrix
 132
 133                 # compute resolution
 134                 Qsize=float(render.resolution_x)/float(render.resolution_y)
 135
 136                 file.write('camera {\n')
 137                 file.write('\tlocation  <0, 0, 0>\n')
 138                 file.write('\tlook_at  <0, 0, -1>\n')
 139                 file.write('\tright <%s, 0, 0>\n' % -Qsize)
 140                 file.write('\tup <0, 1, 0>\n')
 141                 file.write('\tangle  %f \n' % (360.0*atan(16.0/camera.data.lens)/pi))
 142
 143                 file.write('\trotate  <%.6f, %.6f, %.6f>\n' % tuple([degrees(e) for e in matrix.rotationPart().toEuler()]))
 144                 file.write('\ttranslate <%.6f, %.6f, %.6f>\n' % (matrix[3][0], matrix[3][1], matrix[3][2]))
 145                 file.write('}\n')
 146
 147
 148
 149         def exportLamps(lamps):
 150                 # Get all lamps
 151                 for ob in lamps:
 152                         lamp = ob.data
 153
 154                         matrix = ob.matrix
 155
 156                         color = tuple([c * lamp.energy for c in lamp.color]) # Colour is modified by energy
 157
 158                         file.write('light_source {\n')
 159                         file.write('\t< 0,0,0 >\n')
 160                         file.write('\tcolor rgb<%.3g, %.3g, %.3g>\n' % color)
 161
 162                         if lamp.type == 'POINT': # Point Lamp
 163                                 pass
 164                         elif lamp.type == 'SPOT': # Spot
 165                                 file.write('\tspotlight\n')
 166
 167                                 # Falloff is the main radius from the centre line
 168                                 file.write('\tfalloff %.2f\n' % (lamp.spot_size/2.0) ) # 1 TO 179 FOR BOTH
 169                                 file.write('\tradius %.6f\n' % ((lamp.spot_size/2.0) * (1-lamp.spot_blend)) )
 170
 171                                 # Blender does not have a tightness equivilent, 0 is most like blender default.
 172                                 file.write('\ttightness 0\n') # 0:10f
 173
 174                                 file.write('\tpoint_at  <0, 0, -1>\n')
 175                         elif lamp.type == 'SUN':
 176                                 file.write('\tparallel\n')
 177                                 file.write('\tpoint_at  <0, 0, -1>\n') # *must* be after 'parallel'
 178
 179                         elif lamp.type == 'AREA':
 180
 181                                 size_x = lamp.size
 182                                 samples_x = lamp.shadow_ray_samples_x
 183                                 if lamp.shape == 'SQUARE':
 184                                         size_y = size_x
 185                                         samples_y = samples_x
 186                                 else:
 187                                         size_y = lamp.size_y
 188                                         samples_y = lamp.shadow_ray_samples_y
 189
 190
 191
 192                                 file.write('\tarea_light <%d,0,0>,<0,0,%d> %d, %d\n' % (size_x, size_y, samples_x, samples_y))
 193                                 if lamp.shadow_ray_sampling_method == 'CONSTANT_JITTERED':
 194                                         if lamp.jitter:
 195                                                 file.write('\tjitter\n')
 196                                 else:
 197                                         file.write('\tadaptive 1\n')
 198                                         file.write('\tjitter\n')
 199
 200                         if lamp.shadow_method == 'NOSHADOW':
 201                                 file.write('\tshadowless\n')
 202
 203                         file.write('\tfade_distance %.6f\n' % lamp.distance)
 204                         file.write('\tfade_power %d\n' % 1) # Could use blenders lamp quad?
 205                         writeMatrix(matrix)
 206
 207                         file.write('}\n')
 208
 209         def exportMeta(metas):
 210
 211                 # TODO - blenders 'motherball' naming is not supported.
 212
 213                 for ob in metas:
 214                         meta = ob.data
 215
 216                         file.write('blob {\n')
 217                         file.write('\t\tthreshold %.4g\n' % meta.threshold)
 218
 219                         try:
 220                                 material= meta.materials[0] # lame! - blender cant do enything else.
 221                         except:
 222                                 material= None
 223
 224                         for elem in meta.elements:
 225
 226                                 if elem.type not in ('BALL', 'ELLIPSOID'):
 227                                         continue # Not supported
 228
 229                                 loc = elem.location
 230
 231                                 stiffness= elem.stiffness
 232                                 if elem.negative:
 233                                         stiffness = -stiffness
 234
 235                                 if elem.type == 'BALL':
 236
 237                                         file.write('\tsphere { <%.6g, %.6g, %.6g>, %.4g, %.4g ' % (loc.x, loc.y, loc.z, elem.radius, stiffness))
 238
 239                                         # After this wecould do something simple like...
 240                                         #       "pigment {Blue} }"
 241                                         # except we'll write the color
 242
 243                                 elif elem.type == 'ELLIPSOID':
 244                                         # location is modified by scale
 245                                         file.write('\tsphere { <%.6g, %.6g, %.6g>, %.4g, %.4g ' % (loc.x/elem.size_x, loc.y/elem.size_y, loc.z/elem.size_z, elem.radius, stiffness))
 246                                         file.write(     'scale <%.6g, %.6g, %.6g> ' % (elem.size_x, elem.size_y, elem.size_z))
 247
 248                                 if material:
 249                                         diffuse_color = material.diffuse_color
 250
 251                                         if material.transparency and material.transparency_method=='RAYTRACE':  trans = 1-material.raytrace_transparency.filter
 252                                         else:                                                                                                                                   trans = 0.0
 253
 254                                         file.write(
 255                                                 'pigment {rgbft<%.3g, %.3g, %.3g, %.3g, %.3g>} finish {%s} }\n' % \
 256                                                 (diffuse_color[0], diffuse_color[1], diffuse_color[2], 1-material.alpha, trans, materialNames[material.name])
 257                                         )
 258
 259                                 else:
 260                                         file.write('pigment {rgb<1 1 1>} finish {%s} }\n' % DEF_MAT_NAME)               # Write the finish last.
 261
 262                         writeObjectMaterial(material)
 263
 264                         writeMatrix(ob.matrix)
 265
 266                         file.write('}\n')
 267
 268
 269
 270
 271         def exportMeshs(sel):
 272
 273                 ob_num = 0
 274
 275                 for ob in sel:
 276                         ob_num+= 1
 277
 278                         if ob.type in ('LAMP', 'CAMERA', 'EMPTY'):
 279                                 continue
 280
 281                         me = ob.data
 282                         me_materials= me.materials
 283
 284                         me = ob.create_render_mesh(scene)
 285
 286                         if not me:
 287                                 continue
 288
 289                         if info_callback:
 290                                 info_callback('Object %2.d of %2.d (%s)' % (ob_num, len(sel), ob.name))
 291
 292                         #if ob.type!='MESH':
 293                         #       continue
 294                         # me = ob.data
 295
 296                         matrix = ob.matrix
 297                         try:    uv_layer = me.active_uv_texture.data
 298                         except:uv_layer = None
 299
 300                         try:    vcol_layer = me.active_vertex_color.data
 301                         except:vcol_layer = None
 302
 303
 304                         def regular_face(f):
 305                                 fv = f.verts
 306                                 if fv[3]== 0:
 307                                         return fv[0], fv[1], fv[2]
 308                                 return fv[0], fv[1], fv[2], fv[3]
 309
 310                         faces_verts = [regular_face(f) for f in me.faces]
 311                         faces_normals = [tuple(f.normal) for f in me.faces]
 312                         verts_normals = [tuple(v.normal) for v in me.verts]
 313
 314                         # quads incur an extra face
 315                         quadCount = len([f for f in faces_verts if len(f)==4])
 316
 317                         file.write('mesh2 {\n')
 318                         file.write('\tvertex_vectors {\n')
 319                         file.write('\t\t%s' % (len(me.verts))) # vert count
 320                         for v in me.verts:
 321                                 file.write(',\n\t\t<%.6f, %.6f, %.6f>' % tuple(v.co)) # vert count
 322                         file.write('\n  }\n')
 323
 324
 325                         # Build unique Normal list
 326                         uniqueNormals = {}
 327                         for fi, f in enumerate(me.faces):
 328                                 fv = faces_verts[fi]
 329                                 # [-1] is a dummy index, use a list so we can modify in place
 330                                 if f.smooth: # Use vertex normals
 331                                         for v in fv:
 332                                                 key = verts_normals[v]
 333                                                 uniqueNormals[key] = [-1]
 334                                 else: # Use face normal
 335                                         key = faces_normals[fi]
 336                                         uniqueNormals[key] = [-1]
 337
 338                         file.write('\tnormal_vectors {\n')
 339                         file.write('\t\t%d' % len(uniqueNormals)) # vert count
 340                         idx = 0
 341                         for no, index in uniqueNormals.items():
 342                                 file.write(',\n\t\t<%.6f, %.6f, %.6f>' % no) # vert count
 343                                 index[0] = idx
 344                                 idx +=1
 345                         file.write('\n  }\n')
 346
 347
 348                         # Vertex colours
 349                         vertCols = {} # Use for material colours also.
 350
 351                         if uv_layer:
 352                                 # Generate unique UV's
 353                                 uniqueUVs = {}
 354
 355                                 for fi, uv in enumerate(uv_layer):
 356
 357                                         if len(faces_verts[fi])==4:
 358                                                 uvs = uv.uv1, uv.uv2, uv.uv3, uv.uv4
 359                                         else:
 360                                                 uvs = uv.uv1, uv.uv2, uv.uv3
 361
 362                                         for uv in uvs:
 363                                                 uniqueUVs[tuple(uv)] = [-1]
 364
 365                                 file.write('\tuv_vectors {\n')
 366                                 #print unique_uvs
 367                                 file.write('\t\t%s' % (len(uniqueUVs))) # vert count
 368                                 idx = 0
 369                                 for uv, index in uniqueUVs.items():
 370                                         file.write(',\n\t\t<%.6f, %.6f>' % uv)
 371                                         index[0] = idx
 372                                         idx +=1
 373                                 '''
 374                                 else:
 375                                         # Just add 1 dummy vector, no real UV's
 376                                         file.write('\t\t1') # vert count
 377                                         file.write(',\n\t\t<0.0, 0.0>')
 378                                 '''
 379                                 file.write('\n  }\n')
 380
 381
 382                         if me.vertex_colors:
 383
 384                                 for fi, f in enumerate(me.faces):
 385                                         material_index = f.material_index
 386                                         material = me_materials[material_index]
 387
 388                                         if material and material.vertex_color_paint:
 389
 390                                                 col = vcol_layer[fi]
 391
 392                                                 if len(faces_verts[fi])==4:
 393                                                         cols = col.color1, col.color2, col.color3, col.color4
 394                                                 else:
 395                                                         cols = col.color1, col.color2, col.color3
 396
 397                                                 for col in cols:
 398                                                         key = col[0], col[1], col[2], material_index # Material index!
 399                                                         vertCols[key] = [-1]
 400
 401                                         else:
 402                                                 if material:
 403                                                         diffuse_color = tuple(material.diffuse_color)
 404                                                         key = diffuse_color[0], diffuse_color[1], diffuse_color[2], material_index
 405                                                         vertCols[key] = [-1]
 406
 407
 408                         else:
 409                                 # No vertex colours, so write material colours as vertex colours
 410                                 for i, material in enumerate(me_materials):
 411
 412                                         if material:
 413                                                 diffuse_color = tuple(material.diffuse_color)
 414                                                 key = diffuse_color[0], diffuse_color[1], diffuse_color[2], i # i == f.mat
 415                                                 vertCols[key] = [-1]
 416
 417
 418                         # Vert Colours
 419                         file.write('\ttexture_list {\n')
 420                         file.write('\t\t%s' % (len(vertCols))) # vert count
 421                         idx=0
 422                         for col, index in vertCols.items():
 423
 424                                 if me_materials:
 425                                         material = me_materials[col[3]]
 426                                         material_finish = materialNames[material.name]
 427
 428                                         if material.transparency and material.transparency_method=='RAYTRACE':  trans = 1-material.raytrace_transparency.filter
 429                                         else:                                                                                                                                   trans = 0.0
 430
 431                                 else:
 432                                         material_finish = DEF_MAT_NAME # not working properly,
 433                                         trans = 0.0
 434
 435                                 #print material.apl
 436                                 file.write(     ',\n\t\ttexture { pigment {rgbft<%.3g, %.3g, %.3g, %.3g, %.3g>} finish {%s}}' %
 437                                                         (col[0], col[1], col[2], 1-material.alpha, trans, material_finish) )
 438
 439                                 index[0] = idx
 440                                 idx+=1
 441
 442                         file.write( '\n  }\n' )
 443
 444                         # Face indicies
 445                         file.write('\tface_indices {\n')
 446                         file.write('\t\t%d' % (len(me.faces) + quadCount)) # faces count
 447                         for fi, f in enumerate(me.faces):
 448                                 fv = faces_verts[fi]
 449                                 material_index= f.material_index
 450                                 if len(fv) == 4:        indicies = (0,1,2), (0,2,3)
 451                                 else:                           indicies = ((0,1,2),)
 452
 453                                 if vcol_layer:
 454                                         col = vcol_layer[fi]
 455
 456                                         if len(fv) == 4:
 457                                                 cols = col.color1, col.color2, col.color3, col.color4
 458                                         else:
 459                                                 cols = col.color1, col.color2, col.color3
 460
 461
 462                                 if not me_materials or me_materials[material_index] == None: # No materials
 463                                         for i1, i2, i3 in indicies:
 464                                                 file.write(',\n\t\t<%d,%d,%d>' % (fv[i1], fv[i2], fv[i3])) # vert count
 465                                 else:
 466                                         material = me_materials[material_index]
 467                                         for i1, i2, i3 in indicies:
 468                                                 if me.vertex_colors and material.vertex_color_paint:
 469                                                         # Colour per vertex - vertex colour
 470
 471                                                         col1 = cols[i1]
 472                                                         col2 = cols[i2]
 473                                                         col3 = cols[i3]
 474
 475                                                         ci1 = vertCols[col1[0], col1[1], col1[2], material_index][0]
 476                                                         ci2 = vertCols[col2[0], col2[1], col2[2], material_index][0]
 477                                                         ci3 = vertCols[col3[0], col3[1], col3[2], material_index][0]
 478                                                 else:
 479                                                         # Colour per material - flat material colour
 480                                                         diffuse_color= material.diffuse_color
 481                                                         ci1 = ci2 = ci3 = vertCols[diffuse_color[0], diffuse_color[1], diffuse_color[2], f.material_index][0]
 482
 483                                                 file.write(',\n\t\t<%d,%d,%d>, %d,%d,%d' % (fv[i1], fv[i2], fv[i3], ci1, ci2, ci3)) # vert count
 484
 485
 486
 487                         file.write('\n  }\n')
 488
 489                         # normal_indices indicies
 490                         file.write('\tnormal_indices {\n')
 491                         file.write('\t\t%d' % (len(me.faces) + quadCount)) # faces count
 492                         for fi, fv in enumerate(faces_verts):
 493
 494                                 if len(fv) == 4:        indicies = (0,1,2), (0,2,3)
 495                                 else:                           indicies = ((0,1,2),)
 496
 497                                 for i1, i2, i3 in indicies:
 498                                         if f.smooth:
 499                                                 file.write(',\n\t\t<%d,%d,%d>' %\
 500                                                 (uniqueNormals[verts_normals[fv[i1]]][0],\
 501                                                  uniqueNormals[verts_normals[fv[i2]]][0],\
 502                                                  uniqueNormals[verts_normals[fv[i3]]][0])) # vert count
 503                                         else:
 504                                                 idx = uniqueNormals[faces_normals[fi]][0]
 505                                                 file.write(',\n\t\t<%d,%d,%d>' % (idx, idx, idx)) # vert count
 506
 507                         file.write('\n  }\n')
 508
 509                         if uv_layer:
 510                                 file.write('\tuv_indices {\n')
 511                                 file.write('\t\t%d' % (len(me.faces) + quadCount)) # faces count
 512                                 for fi, fv in enumerate(faces_verts):
 513
 514                                         if len(fv) == 4:        indicies = (0,1,2), (0,2,3)
 515                                         else:                           indicies = ((0,1,2),)
 516
 517                                         uv = uv_layer[fi]
 518                                         if len(faces_verts[fi])==4:
 519                                                 uvs = tuple(uv.uv1), tuple(uv.uv2), tuple(uv.uv3), tuple(uv.uv4)
 520                                         else:
 521                                                 uvs = tuple(uv.uv1), tuple(uv.uv2), tuple(uv.uv3)
 522
 523                                         for i1, i2, i3 in indicies:
 524                                                 file.write(',\n\t\t<%d,%d,%d>' %\
 525                                                 (uniqueUVs[uvs[i1]][0],\
 526                                                  uniqueUVs[uvs[i2]][0],\
 527                                                  uniqueUVs[uvs[i2]][0])) # vert count
 528                                 file.write('\n  }\n')
 529
 530                         if me.materials:
 531                                 material = me.materials[0] # dodgy
 532                                 writeObjectMaterial(material)
 533
 534                         writeMatrix(matrix)
 535                         file.write('}\n')
 536
 537                         bpy.data.remove_mesh(me)
 538
 539         def exportWorld(world):
 540                 if not world:
 541                         return
 542
 543                 mist = world.mist
 544
 545                 if mist.enabled:
 546                         file.write('fog {\n')
 547                         file.write('\tdistance %.6f\n' % mist.depth)
 548                         file.write('\tcolor rgbt<%.3g, %.3g, %.3g, %.3g>\n' % (tuple(world.horizon_color) + (1-mist.intensity,)))
 549                         #file.write('\tfog_offset %.6f\n' % mist.start)
 550                         #file.write('\tfog_alt 5\n')
 551                         #file.write('\tturbulence 0.2\n')
 552                         #file.write('\tturb_depth 0.3\n')
 553                         file.write('\tfog_type 1\n')
 554                         file.write('}\n')
 555
 556         def exportGlobalSettings(scene):
 557
 558                 file.write('global_settings {\n')
 559
 560                 if scene.pov_radio_enable:
 561                         file.write('\tradiosity {\n')
 562                         file.write("\t\tadc_bailout %.4g\n" % scene.pov_radio_adc_bailout)
 563                         file.write("\t\talways_sample %d\n" % scene.pov_radio_always_sample)
 564                         file.write("\t\tbrightness %.4g\n" % scene.pov_radio_brightness)
 565                         file.write("\t\tcount %d\n" % scene.pov_radio_count)
 566                         file.write("\t\terror_bound %.4g\n" % scene.pov_radio_error_bound)
 567                         file.write("\t\tgray_threshold %.4g\n" % scene.pov_radio_gray_threshold)
 568                         file.write("\t\tlow_error_factor %.4g\n" % scene.pov_radio_low_error_factor)
 569                         file.write("\t\tmedia %d\n" % scene.pov_radio_media)
 570                         file.write("\t\tminimum_reuse %.4g\n" % scene.pov_radio_minimum_reuse)
 571                         file.write("\t\tnearest_count %d\n" % scene.pov_radio_nearest_count)
 572                         file.write("\t\tnormal %d\n" % scene.pov_radio_normal)
 573                         file.write("\t\trecursion_limit %d\n" % scene.pov_radio_recursion_limit)
 574                         file.write('\t}\n')
 575
 576                 if world:
 577                         file.write("\tambient_light rgb<%.3g, %.3g, %.3g>\n" % tuple(world.ambient_color))
 578
 579                 file.write('}\n')
 580
 581
 582         # Convert all materials to strings we can access directly per vertex.
 583         writeMaterial(None) # default material
 584
 585         for material in bpy.data.materials:
 586                 writeMaterial(material)
 587
 588         exportCamera()
 589         #exportMaterials()
 590         sel = scene.objects
 591         exportLamps([l for l in sel if l.type == 'LAMP'])
 592         exportMeta([l for l in sel if l.type == 'META'])
 593         exportMeshs(sel)
 594         exportWorld(scene.world)
 595         exportGlobalSettings(scene)
 596
 597         file.close()
 598
 599
 600 def write_pov_ini(filename_ini, filename_pov, filename_image):
 601         scene = bpy.data.scenes[0]
 602         render = scene.render_data
 603
 604         x= int(render.resolution_x*render.resolution_percentage*0.01)
 605         y= int(render.resolution_y*render.resolution_percentage*0.01)
 606
 607         file = open(filename_ini, 'w')
 608
 609         file.write('Input_File_Name="%s"\n' % filename_pov)
 610         file.write('Output_File_Name="%s"\n' % filename_image)
 611
 612         file.write('Width=%d\n' % x)
 613         file.write('Height=%d\n' % y)
 614
 615         # Needed for border render.
 616         '''
 617         file.write('Start_Column=%d\n' % part.x)
 618         file.write('End_Column=%d\n' % (part.x+part.w))
 619
 620         file.write('Start_Row=%d\n' % (part.y))
 621         file.write('End_Row=%d\n' % (part.y+part.h))
 622         '''
 623
 624         file.write('Display=0\n')
 625         file.write('Pause_When_Done=0\n')
 626         file.write('Output_File_Type=C\n') # TGA, best progressive loading
 627         file.write('Output_Alpha=1\n')
 628
 629         if render.antialiasing:
 630                 aa_mapping = {'OVERSAMPLE_5':2, 'OVERSAMPLE_8':3, 'OVERSAMPLE_11':4, 'OVERSAMPLE_16':5} # method 1 assumed
 631                 file.write('Antialias=1\n')
 632                 file.write('Antialias_Depth=%d\n' % aa_mapping[render.antialiasing_samples])
 633         else:
 634                 file.write('Antialias=0\n')
 635
 636         file.close()
 637
 638 # Radiosity panel, use in the scene for now.
 639 FloatProperty= bpy.types.Scene.FloatProperty
 640 IntProperty= bpy.types.Scene.IntProperty
 641 BoolProperty= bpy.types.Scene.BoolProperty
 642
 643 # Not a real pov option, just to know if we should write
 644 BoolProperty(   attr="pov_radio_enable",
 645                                 name="Enable Radiosity",
 646                                 description="Enable povrays radiosity calculation.",
 647                                 default= False)
 648 BoolProperty(   attr="pov_radio_display_advanced",
 649                                 name="Advanced Options",
 650                                 description="Show advanced options.",
 651                                 default= False)
 652
 653 # Real pov options
 654 FloatProperty(  attr="pov_radio_adc_bailout",
 655                                 name="ADC Bailout",
 656                                 description="The adc_bailout for radiosity rays. Use adc_bailout = 0.01 / brightest_ambient_object for good results.",
 657                                 min=0.0, max=1000.0, soft_min=0.0, soft_max=1.0, default= 0.01)
 658
 659 BoolProperty(   attr="pov_radio_always_sample",
 660                                 name="Always Sample",
 661                                 description="Only use the data from the pretrace step and not gather any new samples during the final radiosity pass..",
 662                                 default= True)
 663
 664 FloatProperty(  attr="pov_radio_brightness",
 665                                 name="Brightness",
 666                                 description="Ammount objects are brightened before being returned upwards to the rest of the system.",
 667                                 min=0.0, max=1000.0, soft_min=0.0, soft_max=10.0, default= 1.0)
 668
 669 IntProperty(    attr="pov_radio_count",
 670                                 name="Ray Count",
 671                                 description="number of rays that are sent out whenever a new radiosity value has to be calculated.",
 672                                 min=1, max=1600, default= 35)
 673
 674 FloatProperty(  attr="pov_radio_error_bound",
 675                                 name="Error Bound",
 676                                 description="one of the two main speed/quality tuning values, lower values are more accurate.",
 677                                 min=0.0, max=1000.0, soft_min=0.1, soft_max=10.0, default= 1.8)
 678
 679 FloatProperty(  attr="pov_radio_gray_threshold",
 680                                 name="Gray Threshold",
 681                                 description="one of the two main speed/quality tuning values, lower values are more accurate.",
 682                                 min=0.0, max=1.0, soft_min=0, soft_max=1, default= 0.0)
 683
 684 FloatProperty(  attr="pov_radio_low_error_factor",
 685                                 name="Low Error Factor",
 686                                 description="If you calculate just enough samples, but no more, you will get an image which has slightly blotchy lighting.",
 687                                 min=0.0, max=1.0, soft_min=0.0, soft_max=1.0, default= 0.5)
 688
 689 # max_sample - not available yet
 690 BoolProperty(   attr="pov_radio_media",
 691                                 name="Media",
 692                                 description="Radiosity estimation can be affected by media.",
 693                                 default= False)
 694
 695 FloatProperty(  attr="pov_radio_minimum_reuse",
 696                                 name="Minimum Reuse",
 697                                 description="Fraction of the screen width which sets the minimum radius of reuse for each sample point (At values higher than 2% expect errors).",
 698                                 min=0.0, max=1.0, soft_min=0.1, soft_max=0.1, default= 0.015)
 699
 700 IntProperty(    attr="pov_radio_nearest_count",
 701                                 name="Nearest Count",
 702                                 description="Number of old ambient values blended together to create a new interpolated value.",
 703                                 min=1, max=20, default= 5)
 704
 705 BoolProperty(   attr="pov_radio_normal",
 706                                 name="Normals",
 707                                 description="Radiosity estimation can be affected by normals.",
 708                                 default= False)
 709
 710 IntProperty(    attr="pov_radio_recursion_limit",
 711                                 name="Recursion Limit",
 712                                 description="how many recursion levels are used to calculate the diffuse inter-reflection.",
 713                                 min=1, max=20, default= 3)
 714
 715
 716 class PovrayRender(bpy.types.RenderEngine):
 717         __idname__ = 'POVRAY_RENDER'
 718         __label__ = "Povray"
 719         DELAY = 0.02
 720
 721         def _export(self, scene):
 722                 import tempfile
 723
 724                 self.temp_file_in = tempfile.mktemp(suffix='.pov')
 725                 self.temp_file_out = tempfile.mktemp(suffix='.tga')
 726                 self.temp_file_ini = tempfile.mktemp(suffix='.ini')
 727                 '''
 728                 self.temp_file_in = '/test.pov'
 729                 self.temp_file_out = '/test.tga'
 730                 self.temp_file_ini = '/test.ini'
 731                 '''
 732
 733                 def info_callback(txt):
 734                         self.update_stats("", "POVRAY: " + txt)
 735
 736                 write_pov(self.temp_file_in, scene, info_callback)
 737
 738         def _render(self):
 739
 740                 try:            os.remove(self.temp_file_out) # so as not to load the old file
 741                 except: pass
 742
 743                 write_pov_ini(self.temp_file_ini, self.temp_file_in, self.temp_file_out)
 744
 745                 print ("***-STARTING-***")
 746
 747                 pov_binary = "povray"
 748
 749                 if sys.platform=='win32':
 750                         if bitness == 64:
 751                                 pov_binary = "pvengine64"
 752                         else:
 753                                 pov_binary = "pvengine"
 754
 755                 if 1:
 756                         self.process = subprocess.Popen([pov_binary, self.temp_file_ini]) # stdout=subprocess.PIPE, stderr=subprocess.PIPE
 757                 else:
 758                         # This works too but means we have to wait until its done
 759                         os.system('%s %s' % (pov_binary, self.temp_file_ini))
 760
 761                 print ("***-DONE-***")
 762
 763         def _cleanup(self):
 764                 for f in (self.temp_file_in, self.temp_file_ini, self.temp_file_out):
 765                         try:            os.remove(f)
 766                         except: pass
 767
 768                 self.update_stats("", "")
 769
 770         def render(self, scene):
 771
 772                 self.update_stats("", "POVRAY: Exporting data from Blender")
 773                 self._export(scene)
 774                 self.update_stats("", "POVRAY: Parsing File")
 775                 self._render()
 776
 777                 r = scene.render_data
 778
 779                 # compute resolution
 780                 x= int(r.resolution_x*r.resolution_percentage*0.01)
 781                 y= int(r.resolution_y*r.resolution_percentage*0.01)
 782
 783
 784
 785                 # Wait for the file to be created
 786                 while not os.path.exists(self.temp_file_out):
 787                         if self.test_break():
 788                                 try:            self.process.terminate()
 789                                 except: pass
 790                                 break
 791
 792                         if self.process.poll() != None:
 793                                 self.update_stats("", "POVRAY: Failed")
 794                                 break
 795
 796                         time.sleep(self.DELAY)
 797
 798                 if os.path.exists(self.temp_file_out):
 799
 800                         self.update_stats("", "POVRAY: Rendering")
 801
 802                         prev_size = -1
 803
 804                         def update_image():
 805                                 result = self.begin_result(0, 0, x, y)
 806                                 lay = result.layers[0]
 807                                 # possible the image wont load early on.
 808                                 try:            lay.load_from_file(self.temp_file_out)
 809                                 except: pass
 810                                 self.end_result(result)
 811
 812                         # Update while povray renders
 813                         while True:
 814
 815                                 # test if povray exists
 816                                 if self.process.poll() != None:
 817                                         update_image();
 818                                         break
 819
 820                                 # user exit
 821                                 if self.test_break():
 822                                         try:            self.process.terminate()
 823                                         except: pass
 824
 825                                         break
 826
 827                                 # Would be nice to redirect the output
 828                                 # stdout_value, stderr_value = self.process.communicate() # locks
 829
 830
 831                                 # check if the file updated
 832                                 new_size = os.path.getsize(self.temp_file_out)
 833
 834                                 if new_size != prev_size:
 835                                         update_image()
 836                                         prev_size = new_size
 837
 838                                 time.sleep(self.DELAY)
 839
 840                 self._cleanup()
 841
 842 bpy.types.register(PovrayRender)
 843
 844 # Use some of the existing buttons.
 845 import buttons_scene
 846 buttons_scene.SCENE_PT_render.COMPAT_ENGINES.add('POVRAY_RENDER')
 847 buttons_scene.SCENE_PT_dimensions.COMPAT_ENGINES.add('POVRAY_RENDER')
 848 buttons_scene.SCENE_PT_antialiasing.COMPAT_ENGINES.add('POVRAY_RENDER')
 849 buttons_scene.SCENE_PT_output.COMPAT_ENGINES.add('POVRAY_RENDER')
 850 del buttons_scene
 851
 852 # Use only a subset of the world panels
 853 import buttons_world
 854 buttons_world.WORLD_PT_preview.COMPAT_ENGINES.add('POVRAY_RENDER')
 855 buttons_world.WORLD_PT_context_world.COMPAT_ENGINES.add('POVRAY_RENDER')
 856 buttons_world.WORLD_PT_world.COMPAT_ENGINES.add('POVRAY_RENDER')
 857 buttons_world.WORLD_PT_mist.COMPAT_ENGINES.add('POVRAY_RENDER')
 858 del buttons_world
 859
 860 # Example of wrapping every class 'as is'
 861 import buttons_material
 862 for member in dir(buttons_material):
 863         subclass = getattr(buttons_material, member)
 864         try:            subclass.COMPAT_ENGINES.add('POVRAY_RENDER')
 865         except: pass
 866 del buttons_material
 867
 868 class RenderButtonsPanel(bpy.types.Panel):
 869         __space_type__ = 'PROPERTIES'
 870         __region_type__ = 'WINDOW'
 871         __context__ = "scene"
 872         # COMPAT_ENGINES must be defined in each subclass, external engines can add themselves here
 873
 874         def poll(self, context):
 875                 rd = context.scene.render_data
 876                 return (rd.use_game_engine==False) and (rd.engine in self.COMPAT_ENGINES)
 877
 878 class SCENE_PT_povray_radiosity(RenderButtonsPanel):
 879         __label__ = "Radiosity"
 880         COMPAT_ENGINES = set(['POVRAY_RENDER'])
 881
 882         def draw_header(self, context):
 883                 layout = self.layout
 884                 scene = context.scene
 885                 layout.itemR(scene, "pov_radio_enable", text="")
 886
 887         def draw(self, context):
 888                 layout = self.layout
 889                 scene = context.scene
 890                 rd = scene.render_data
 891
 892                 layout.active = scene.pov_radio_enable
 893
 894                 split = layout.split()
 895
 896                 col = split.column()
 897
 898                 col.itemR(scene, "pov_radio_count", text="Rays")
 899                 col.itemR(scene, "pov_radio_recursion_limit", text="Recursions")
 900                 col = split.column()
 901                 col.itemR(scene, "pov_radio_error_bound", text="Error")
 902
 903                 layout.itemR(scene, "pov_radio_display_advanced")
 904
 905                 if scene.pov_radio_display_advanced:
 906                         split = layout.split()
 907
 908                         col = split.column()
 909                         col.itemR(scene, "pov_radio_adc_bailout", slider=True)
 910                         col.itemR(scene, "pov_radio_gray_threshold", slider=True)
 911                         col.itemR(scene, "pov_radio_low_error_factor", slider=True)
 912
 913
 914
 915                         col = split.column()
 916                         col.itemR(scene, "pov_radio_brightness")
 917                         col.itemR(scene, "pov_radio_minimum_reuse", text="Min Reuse")
 918                         col.itemR(scene, "pov_radio_nearest_count")
 919
 920
 921                         split = layout.split()
 922
 923                         col = split.column()
 924                         col.itemL(text="Estimation Influence:")
 925                         col.itemR(scene, "pov_radio_media")
 926                         col.itemR(scene, "pov_radio_normal")
 927
 928                         col = split.column()
 929                         col.itemR(scene, "pov_radio_always_sample")
 930
 931
 932 bpy.types.register(SCENE_PT_povray_radiosity)