323cc790fa
export obj can now export duplis and particles as well as faster face exporting and other small cleanups/speedups.
88 lines
2.1 KiB
Python
88 lines
2.1 KiB
Python
import Blender
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def getDerivedObjects(ob, PARTICLES= True):
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'''
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Takes an objects and returnes a list of (ob, maxrix4x4) pairs
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that are derived from this object -
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This will include the object its self if it would be rendered.
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all dupli's for eg are not rendered themselves.
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currently supports
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* dupligroups
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* dupliverts
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* dupliframes
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* static particles as a mesh
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it is possible this function will return an empty list.
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'''
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ob_mtx_pairs = ob.DupObjects
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effects= ob.effects
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# Ignore self if were a dupli* or our parent is a duplivert.
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if ob.enableDupFrames or ob.enableDupGroup or ob.enableDupVerts:
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pass
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else:
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parent= ob.parent
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if parent and parent.enableDupVerts:
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pass
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else:
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if effects and (not effects[0].flag & Blender.Effect.Flags.EMESH):
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# Particles mesh wont render
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pass
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else:
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ob_mtx_pairs.append((ob, ob.matrixWorld))
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if PARTICLES:
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type_vec= type(Blender.Mathutils.Vector())
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type_tp= type((0,0))
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type_ls= type([])
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# TODO, particles per child object.
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# TODO Support materials
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me= Blender.Mesh.New()
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for eff in effects:
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par= eff.getParticlesLoc()
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if par:
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type_par= type(par[0])
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if type_par == type_vec:
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# point particles
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me.verts.extend(par)
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elif type_par == type_tp:
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# edge pairs
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start_index= len(me.verts)
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me.verts.extend([v for p in par for v in p])
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me.edges.extend( [(i, i+1) for i in xrange(start_index, start_index + len(par) - 1 )] )
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elif type_par == type_ls:
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# lines of edges
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start_index= len(me.verts)
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me.verts.extend([v for line in par for v in line])
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edges= []
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for line in par:
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edges.extend( [(i,i+1) for i in xrange(start_index, start_index+len(line)-1) ] )
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start_index+= len(line)
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me.edges.extend(edges)
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if me.verts:
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# If we have verts, then add the mesh
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ob_par = Blender.Object.New('Mesh')
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ob_par.link( me )
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LOOSE= Blender.Mesh.EdgeFlags.LOOSE
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for ed in me.edges:
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ed.flag |= LOOSE
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# Particle's are in worldspace so an identity matrix is fine.
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ob_mtx_pairs.append( (ob_par, Blender.Mathutils.Matrix()) )
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return ob_mtx_pairs
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