forked from bartvdbraak/blender
simple povray render integration.
Supports... - camera/lamp/mesh object types - meshes with modifiers applied, normals/uv/vertex colors - materials, reflection, transparency - spot/area/point lamps, samples, raytrace options - scene render size, AA setting Details... - Doesn't need any 3rd party modules. - Runs povray from the subprocess module, updating the image from a TARGA. - Currently no UI panels or support for custom settings. This could be used as an example for other scripts.
This commit is contained in:
Campbell Barton
parent
e52dbadcff
commit
37b49492a8
564
release/io/engine_render_pov.py
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564
release/io/engine_render_pov.py
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import bpy
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from math import atan, pi, degrees
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import subprocess
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import os
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import sys
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import time
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def write_pov(filename, scene=None, info_callback = None):
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file = open(filename, 'w')
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# Only for testing
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if not scene:
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scene = bpy.data.scenes[0]
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render = scene.render_data
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materialTable = {}
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def saneName(name):
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name = name.lower()
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for ch in ' /\\+=-[]{}().,<>\'":;~!@#$%^&*|?':
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name = name.replace(ch, '_')
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return name
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def writeMatrix(matrix):
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file.write('\tmatrix <%.6f, %.6f, %.6f, %.6f, %.6f, %.6f, %.6f, %.6f, %.6f, %.6f, %.6f, %.6f>\n' %\
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(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]) )
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def exportCamera():
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camera = scene.camera
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matrix = camera.matrix
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# compute resolution
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Qsize=float(render.resolution_x)/float(render.resolution_y)
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file.write('camera {\n')
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file.write('\tlocation <0, 0, 0>\n')
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file.write('\tlook_at <0, 0, -1>\n')
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file.write('\tright <%s, 0, 0>\n' % -Qsize)
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file.write('\tup <0, 1, 0>\n')
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file.write('\tangle %f \n' % (360.0*atan(16.0/camera.data.lens)/pi))
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file.write('\trotate <%.6f, %.6f, %.6f>\n' % tuple([degrees(e) for e in matrix.rotationPart().toEuler()]))
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file.write('\ttranslate <%.6f, %.6f, %.6f>\n' % (matrix[3][0], matrix[3][1], matrix[3][2]))
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file.write('}\n')
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def exportLamps(lamps):
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# Get all lamps
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for ob in lamps:
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lamp = ob.data
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matrix = ob.matrix
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color = tuple([c * lamp.energy for c in lamp.color]) # Colour is modified by energy
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file.write('light_source')
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file.write('{\n')
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file.write('\t< 0,0,0 >\n')
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file.write('\tcolor red %.6f green %.6f blue %.6f\n' % color)
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if lamp.type == 'POINT': # Point Lamp
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pass
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elif lamp.type == 'SPOT': # Spot
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file.write('\tspotlight\n')
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# Falloff is the main radius from the centre line
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file.write('\tfalloff %.2f\n' % (lamp.spot_size/2.0) ) # 1 TO 179 FOR BOTH
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file.write('\tradius %.6f\n' % ((lamp.spot_size/2.0) * (1-lamp.spot_blend)) )
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# Blender does not have a tightness equivilent, 0 is most like blender default.
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file.write('\ttightness 0\n') # 0:10f
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file.write('\tpoint_at <0, 0, -1>\n')
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elif lamp.type == 'AREA':
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size_x = lamp.size
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samples_x = lamp.shadow_ray_samples_x
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if lamp.shape == 'SQUARE':
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size_y = size_x
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samples_y = samples_x
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else:
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size_y = lamp.size_y
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samples_y = lamp.shadow_ray_samples_y
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file.write('\tarea_light <%d,0,0>,<0,0,%d> %d, %d\n' % (size_x, size_y, samples_x, samples_y))
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if lamp.shadow_ray_sampling_method == 'CONSTANT_JITTERED':
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if lamp.jitter:
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file.write('\tjitter\n')
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else:
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file.write('\tadaptive 1\n')
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file.write('\tjitter\n')
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if lamp.shadow_method == 'NOSHADOW':
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file.write('\tshadowless\n')
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file.write('\tfade_distance %.6f\n' % lamp.distance)
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file.write('\tfade_power %d\n' % 1) # Could use blenders lamp quad?
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writeMatrix(matrix)
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file.write('}\n')
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def exportMeshs(sel):
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def bMat2PovString(material):
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povstring = 'finish {'
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if world != None:
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povstring += 'ambient <%.6f, %.6f, %.6f> ' % tuple([c*material.ambient for c in world.ambient_color])
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povstring += 'diffuse %.6f ' % material.diffuse_reflection
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povstring += 'specular %.6f ' % material.specular_reflection
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if material.raytrace_mirror.enabled:
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#povstring += 'interior { ior %.6f } ' % material.IOR
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raytrace_mirror= material.raytrace_mirror
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if raytrace_mirror.reflect:
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povstring += 'reflection {'
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povstring += '<%.6f, %.6f, %.6f>' % tuple(material.mirror_color) # Should ask for ray mirror flag
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povstring += 'fresnel 1 falloff %.6f exponent %.6f metallic %.6f} ' % (raytrace_mirror.fresnel, raytrace_mirror.fresnel_fac, raytrace_mirror.reflect)
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if material.raytrace_transparency.enabled:
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#povstring += 'interior { ior %.6f } ' % material.IOR
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pass
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#file.write('\t\troughness %.6f\n' % (material.hard*0.5))
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#file.write('\t\t\tcrand 0.0\n') # Sand granyness
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#file.write('\t\t\tmetallic %.6f\n' % material.spec)
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#file.write('\t\t\tphong %.6f\n' % material.spec)
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#file.write('\t\t\tphong_size %.6f\n' % material.spec)
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povstring += 'brilliance %.6f ' % (material.specular_hardness/256.0) # Like hardness
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povstring += '}'
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#file.write('\t}\n')
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return povstring
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world = scene.world
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# Convert all materials to strings we can access directly per vertex.
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for material in bpy.data.materials:
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materialTable[material.name] = bMat2PovString(material)
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ob_num = 0
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for ob in sel:
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ob_num+= 1
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if ob.type in ('LAMP', 'CAMERA', 'EMPTY'):
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continue
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me = ob.data
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me_materials= me.materials
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me = ob.create_render_mesh(scene)
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if not me:
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continue
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if info_callback:
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info_callback('Object %2.d of %2.d (%s)' % (ob_num, len(sel), ob.name))
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#if ob.type!='MESH':
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# continue
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# me = ob.data
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matrix = ob.matrix
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try: uv_layer = me.active_uv_texture.data
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except:uv_layer = None
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try: vcol_layer = me.active_vertex_color.data
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except:vcol_layer = None
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def regular_face(f):
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fv = f.verts
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if fv[3]== 0:
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return fv[0], fv[1], fv[2]
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return fv[0], fv[1], fv[2], fv[3]
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faces_verts = [regular_face(f) for f in me.faces]
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faces_normals = [tuple(f.normal) for f in me.faces]
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verts_normals = [tuple(v.normal) for v in me.verts]
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# quads incur an extra face
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quadCount = len([f for f in faces_verts if len(f)==4])
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file.write('mesh2 {\n')
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file.write('\tvertex_vectors {\n')
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file.write('\t\t%s' % (len(me.verts))) # vert count
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for v in me.verts:
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file.write(',\n\t\t<%.6f, %.6f, %.6f>' % tuple(v.co)) # vert count
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file.write('\n }\n')
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# Build unique Normal list
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uniqueNormals = {}
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for fi, f in enumerate(me.faces):
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fv = faces_verts[fi]
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# [-1] is a dummy index, use a list so we can modify in place
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if f.smooth: # Use vertex normals
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for v in fv:
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key = verts_normals[v]
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uniqueNormals[key] = [-1]
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else: # Use face normal
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key = faces_normals[fi]
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uniqueNormals[key] = [-1]
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file.write('\tnormal_vectors {\n')
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file.write('\t\t%d' % len(uniqueNormals)) # vert count
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idx = 0
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for no, index in uniqueNormals.items():
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file.write(',\n\t\t<%.6f, %.6f, %.6f>' % no) # vert count
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index[0] = idx
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idx +=1
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file.write('\n }\n')
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# Vertex colours
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vertCols = {} # Use for material colours also.
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if uv_layer:
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# Generate unique UV's
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uniqueUVs = {}
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for fi, uv in enumerate(uv_layer):
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if len(faces_verts[fi])==4:
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uvs = uv.uv1, uv.uv2, uv.uv3, uv.uv4
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else:
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uvs = uv.uv1, uv.uv2, uv.uv3
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for uv in uvs:
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uniqueUVs[tuple(uv)] = [-1]
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file.write('\tuv_vectors {\n')
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#print unique_uvs
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file.write('\t\t%s' % (len(uniqueUVs))) # vert count
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idx = 0
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for uv, index in uniqueUVs.items():
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file.write(',\n\t\t<%.6f, %.6f>' % uv)
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index[0] = idx
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idx +=1
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'''
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else:
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# Just add 1 dummy vector, no real UV's
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file.write('\t\t1') # vert count
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file.write(',\n\t\t<0.0, 0.0>')
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'''
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file.write('\n }\n')
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if me.vertex_colors:
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for fi, f in enumerate(me.faces):
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material_index = f.material_index
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material = me_materials[material_index]
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if material and material.vertex_color_paint:
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col = vcol_layer[fi]
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if len(faces_verts[fi])==4:
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cols = col.color1, col.color2, col.color3, col.color4
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else:
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cols = col.color1, col.color2, col.color3
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for col in cols:
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key = col[0], col[1], col[2], material_index # Material index!
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vertCols[key] = [-1]
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else:
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if material:
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diffuse_color = tuple(material.diffuse_color)
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key = diffuse_color[0], diffuse_color[1], diffuse_color[2], material_index
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vertCols[key] = [-1]
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else:
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# No vertex colours, so write material colours as vertex colours
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for i, material in enumerate(me_materials):
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if material:
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diffuse_color = tuple(material.diffuse_color)
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key = diffuse_color[0], diffuse_color[1], diffuse_color[2], i # i == f.mat
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vertCols[key] = [-1]
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# Vert Colours
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file.write('\ttexture_list {\n')
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file.write('\t\t%s' % (len(vertCols))) # vert count
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idx=0
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for col, index in vertCols.items():
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if me_materials:
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material = me_materials[col[3]]
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materialString = materialTable[material.name]
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else:
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materialString = '' # Dont write anything
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float_col = col[0], col[1], col[2], 1-material.alpha, materialString
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#print material.apl
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file.write(',\n\t\ttexture { pigment {rgbf<%.6f, %.6f, %.6f, %.6f>}%s}' % float_col)
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index[0] = idx
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idx+=1
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file.write( '\n }\n' )
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# Face indicies
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file.write('\tface_indices {\n')
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file.write('\t\t%d' % (len(me.faces) + quadCount)) # faces count
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for fi, f in enumerate(me.faces):
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fv = faces_verts[fi]
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material_index= f.material_index
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if len(fv) == 4: indicies = (0,1,2), (0,2,3)
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else: indicies = ((0,1,2),)
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if vcol_layer:
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col = vcol_layer[fi]
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if len(fv) == 4:
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cols = col.color1, col.color2, col.color3, col.color4
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else:
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cols = col.color1, col.color2, col.color3
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if not me_materials or me_materials[material_index] == None: # No materials
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for i1, i2, i3 in indicies:
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file.write(',\n\t\t<%d,%d,%d>' % (fv[i1], fv[i2], fv[i3])) # vert count
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else:
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material = me_materials[material_index]
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for i1, i2, i3 in indicies:
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if me.vertex_colors and material.vertex_color_paint:
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# Colour per vertex - vertex colour
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col1 = cols[i1]
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col2 = cols[i2]
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col3 = cols[i3]
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ci1 = vertCols[col1[0], col1[1], col1[2], material_index][0]
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ci2 = vertCols[col2[0], col2[1], col2[2], material_index][0]
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ci3 = vertCols[col3[0], col3[1], col3[2], material_index][0]
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else:
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# Colour per material - flat material colour
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diffuse_color= material.diffuse_color
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ci1 = ci2 = ci3 = vertCols[diffuse_color[0], diffuse_color[1], diffuse_color[2], f.material_index][0]
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file.write(',\n\t\t<%d,%d,%d>, %d,%d,%d' % (fv[i1], fv[i2], fv[i3], ci1, ci2, ci3)) # vert count
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file.write('\n }\n')
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# normal_indices indicies
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file.write('\tnormal_indices {\n')
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file.write('\t\t%d' % (len(me.faces) + quadCount)) # faces count
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for fi, f in enumerate(me.faces):
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fv = faces_verts[fi]
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if len(fv) == 4: indicies = (0,1,2), (0,2,3)
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else: indicies = ((0,1,2),)
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for i1, i2, i3 in indicies:
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if f.smooth:
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file.write(',\n\t\t<%d,%d,%d>' %\
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(uniqueNormals[verts_normals[fv[i1]]][0],\
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uniqueNormals[verts_normals[fv[i2]]][0],\
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uniqueNormals[verts_normals[fv[i3]]][0])) # vert count
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else:
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idx = uniqueNormals[faces_normals[fi]][0]
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file.write(',\n\t\t<%d,%d,%d>' % (idx, idx, idx)) # vert count
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file.write('\n }\n')
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# normal_indices indicies
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if uv_layer:
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file.write('\tuv_indices {\n')
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file.write('\t\t%d' % (len(me.faces) + quadCount)) # faces count
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for f in me.faces:
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fv = faces_verts[fi]
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if len(fv) == 4: indicies = (0,1,2), (0,2,3)
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else: indicies = ((0,1,2),)
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uv = uv_layer[fi]
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if len(faces_verts[fi])==4:
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uvs = uv.uv1, uv.uv2, uv.uv3, uv.uv4
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else:
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uvs = uv.uv1, uv.uv2, uv.uv3
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for i1, i2, i3 in indicies:
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file.write(',\n\t\t<%d,%d,%d>' %\
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(uniqueUVs[tuple(uvs[i1][0:2])][0],\
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uniqueUVs[tuple(uvs[i2][0:2])][0],\
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uniqueUVs[tuple(uvs[i2][0:2])][0])) # vert count
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file.write('\n }\n')
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if me.materials:
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material = me.materials[0] # dodgy
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if material and material.raytrace_transparency.enabled:
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file.write('\tinterior { ior %.6f }\n' % material.raytrace_transparency.ior)
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writeMatrix(matrix)
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file.write('}\n')
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bpy.data.remove_mesh(me)
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exportCamera()
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#exportMaterials()
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sel = scene.objects
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lamps = [l for l in sel if l.type == 'LAMP']
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exportLamps(lamps)
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exportMeshs(sel)
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file.close()
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def write_pov_ini(filename_ini, filename_pov, filename_image):
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scene = bpy.data.scenes[0]
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render = scene.render_data
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x= int(render.resolution_x*render.resolution_percentage*0.01)
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y= int(render.resolution_y*render.resolution_percentage*0.01)
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file = open(filename_ini, 'w')
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file.write('Input_File_Name="%s"\n' % filename_pov)
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file.write('Output_File_Name="%s"\n' % filename_image)
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file.write('Width=%d\n' % x)
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file.write('Height=%d\n' % y)
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# Needed for border render.
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'''
|
||||
file.write('Start_Column=%d\n' % part.x)
|
||||
file.write('End_Column=%d\n' % (part.x+part.w))
|
||||
|
||||
file.write('Start_Row=%d\n' % (part.y))
|
||||
file.write('End_Row=%d\n' % (part.y+part.h))
|
||||
'''
|
||||
|
||||
file.write('Display=0\n')
|
||||
file.write('Pause_When_Done=0\n')
|
||||
file.write('Output_File_Type=C\n') # TGA, best progressive loading
|
||||
file.write('Output_Alpha=1\n')
|
||||
|
||||
if render.antialiasing:
|
||||
aa_mapping = {'OVERSAMPLE_5':2, 'OVERSAMPLE_8':3, 'OVERSAMPLE_11':4, 'OVERSAMPLE_16':5} # method 1 assumed
|
||||
file.write('Antialias=1\n')
|
||||
file.write('Antialias_Depth=%d\n' % aa_mapping[render.antialiasing_samples])
|
||||
else:
|
||||
file.write('Antialias=0\n')
|
||||
|
||||
file.close()
|
||||
|
||||
|
||||
class PovrayRenderEngine(bpy.types.RenderEngine):
|
||||
__label__ = "Povray"
|
||||
DELAY = 0.02
|
||||
def _export(self, scene):
|
||||
import tempfile
|
||||
|
||||
self.temp_file_in = tempfile.mktemp(suffix='.pov')
|
||||
self.temp_file_out = tempfile.mktemp(suffix='.ppm')
|
||||
self.temp_file_ini = tempfile.mktemp(suffix='.ini')
|
||||
|
||||
def info_callback(txt):
|
||||
self.update_stats("", "POVRAY: " + txt)
|
||||
|
||||
write_pov(self.temp_file_in, scene, info_callback)
|
||||
|
||||
def _render(self):
|
||||
|
||||
try: os.remove(self.temp_file_out) # so as not to load the old file
|
||||
except: pass
|
||||
|
||||
write_pov_ini(self.temp_file_ini, self.temp_file_in, self.temp_file_out)
|
||||
|
||||
print ("***-STARTING-***")
|
||||
# This works too but means we have to wait until its done
|
||||
# os.system('povray %s' % self.temp_file_ini)
|
||||
|
||||
self.process = subprocess.Popen(["povray", self.temp_file_ini]) # stdout=subprocess.PIPE, stderr=subprocess.PIPE
|
||||
print ("***-DONE-***")
|
||||
|
||||
def _cleanup(self):
|
||||
for f in (self.temp_file_in, self.temp_file_ini, self.temp_file_out):
|
||||
try: os.remove(f)
|
||||
except: pass
|
||||
|
||||
self.update_stats("", "")
|
||||
|
||||
def render(self, scene):
|
||||
|
||||
self.update_stats("", "POVRAY: Exporting data from Blender")
|
||||
self._export(scene)
|
||||
self.update_stats("", "POVRAY: Parsing File")
|
||||
self._render()
|
||||
|
||||
r = scene.render_data
|
||||
|
||||
# compute resolution
|
||||
x= int(r.resolution_x*r.resolution_percentage*0.01)
|
||||
y= int(r.resolution_y*r.resolution_percentage*0.01)
|
||||
|
||||
|
||||
|
||||
# Wait for the file to be created
|
||||
while not os.path.exists(self.temp_file_out):
|
||||
time.sleep(self.DELAY)
|
||||
|
||||
self.update_stats("", "POVRAY: Rendering")
|
||||
|
||||
prev_size = -1
|
||||
|
||||
def update_image():
|
||||
result = self.begin_result(0, 0, x, y)
|
||||
lay = result.layers[0]
|
||||
# possible the image wont load early on.
|
||||
try: lay.rect_from_file(self.temp_file_out, 0, 0)
|
||||
except: pass
|
||||
self.end_result(result)
|
||||
|
||||
# Update while povray renders
|
||||
while True:
|
||||
|
||||
# test if povray exists
|
||||
if self.process.poll() != None:
|
||||
update_image();
|
||||
break
|
||||
|
||||
# user exit
|
||||
if self.test_break():
|
||||
try: # It might not be running
|
||||
self.process.terminate()
|
||||
except:
|
||||
pass
|
||||
|
||||
break
|
||||
|
||||
# Would be nice to redirect the output
|
||||
# stdout_value, stderr_value = self.process.communicate() # locks
|
||||
|
||||
|
||||
# check if the file updated
|
||||
new_size = os.path.getsize(self.temp_file_out)
|
||||
|
||||
if new_size != prev_size:
|
||||
update_image()
|
||||
prev_size = new_size
|
||||
|
||||
time.sleep(self.DELAY)
|
||||
|
||||
self._cleanup()
|
||||
|
||||
|
||||
bpy.types.register(PovrayRenderEngine)
|
||||
Loading…
Reference in New Issue
Block a user