634 lines
18 KiB
Python
634 lines
18 KiB
Python
import Blender
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from Blender import Scene, sys, Camera, Object, Image
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from Blender.Scene import Render
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Vector= Blender.Mathutils.Vector
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def extFromFormat(format):
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if format == Render.TARGA: return 'tga'
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if format == Render.RAWTGA: return 'tga'
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if format == Render.HDR: return 'hdr'
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if format == Render.PNG: return 'png'
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if format == Render.BMP: return 'bmp'
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if format == Render.JPEG: return 'jpg'
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if format == Render.HAMX: return 'ham'
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if format == Render.TIFF: return 'tif'
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if format == Render.CINEON: return 'cine'
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if format == Render.DPX: return 'tif'
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if format == Render.OPENEXR: return 'exr'
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if format == Render.IRIS: return 'rgb'
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return ''
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def imageFromObjectsOrtho(objects, path, width, height, smooth, alpha= True, camera_matrix= None, format=Render.PNG):
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'''
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Takes any number of objects and renders them on the z axis, between x:y-0 and x:y-1
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Usefull for making images from a mesh without per pixel operations
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- objects must be alredy placed
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- smooth, anti alias True/False
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- path renders to a PNG image
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- alpha weather to render background as alpha
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returns the blender image
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'''
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ext = '.' + extFromFormat(format)
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print ext
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# remove an extension if its alredy there
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if path.lower().endswith(ext):
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path= path[:-4]
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path_expand= sys.expandpath(path) + ext
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print path_expand, 'path'
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# Touch the path
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try:
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f= open(path_expand, 'w')
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f.close()
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except:
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raise 'Error, could not write to path:' + path_expand
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# RENDER THE FACES.
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scn= Scene.GetCurrent()
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render_scn= Scene.New()
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render_scn.makeCurrent()
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render_scn.Layers |= (1<<20)-1 # all layers enabled
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# Add objects into the current scene
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for ob in objects:
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render_scn.link(ob)
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render_context= render_scn.getRenderingContext()
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render_context.setRenderPath('') # so we can ignore any existing path and save to the abs path.
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render_context.imageSizeX(width)
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render_context.imageSizeY(height)
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if smooth:
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render_context.enableOversampling(True)
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render_context.setOversamplingLevel(16)
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else:
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render_context.enableOversampling(False)
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render_context.setRenderWinSize(100)
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render_context.setImageType(format)
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render_context.enableExtensions(True)
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#render_context.enableSky() # No alpha needed.
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if alpha:
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render_context.alphaMode= 1
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render_context.enableRGBAColor()
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else:
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render_context.alphaMode= 0
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render_context.enableRGBColor()
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render_context.displayMode= 0 # fullscreen
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# New camera and object
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render_cam_data= Camera.New('ortho')
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render_cam_ob= Object.New('Camera')
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render_cam_ob.link(render_cam_data)
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render_scn.link(render_cam_ob)
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render_scn.objects.camera = render_cam_ob
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render_cam_data.type= 'ortho'
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# Position the camera
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if camera_matrix:
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render_cam_ob.setMatrix(camera_matrix)
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# We need to take into account the matrix scaling when setting the size
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# so we get the image bounds defined by the matrix
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# first get the x and y factors from the matrix.
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# To render the correct dimensions we must use the aspy and aspy to force the matrix scale to
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# override the aspect enforced by the width and weight.
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cent= Vector() * camera_matrix
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xvec= Vector(1,0,0) * camera_matrix
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yvec= Vector(0,1,0) * camera_matrix
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# zvec= Vector(0,0,1) * camera_matrix
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xlen = (cent-xvec).length # half height of the image
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ylen = (cent-yvec).length # half width of the image
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# zlen = (cent-zvec).length # dist to place the camera? - just use the loc for now.
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# less then 1.0 portrate, 1.0 or more is portrate
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asp_cam_mat= xlen/ylen # divide by zero? - possible but scripters fault.
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asp_image_res= float(width)/height
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#print 'asp quad', asp_cam_mat, 'asp_image', asp_image_res
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#print 'xylen', xlen, ylen, 'w/h', width, height
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# Setup the aspect
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if asp_cam_mat > asp_image_res:
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# camera is wider then image res.
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# to make the image wider, reduce the aspy
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asp_diff= asp_image_res/asp_cam_mat
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min_asp= asp_diff * 200
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#print 'X', min_asp
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elif asp_cam_mat < asp_image_res: # asp_cam_mat < asp_image_res
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# camera is narrower then image res
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# to make the image narrower, reduce the aspx
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asp_diff= asp_cam_mat/asp_image_res
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min_asp= asp_diff * 200
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#print 'Y', min_asp
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else:
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min_asp= 200
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# set the camera size
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if xlen > ylen:
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if asp_cam_mat > asp_image_res:
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render_context.aspectX= 200 # get the greatest range possible
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render_context.aspectY= min_asp # get the greatest range possible
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else:
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render_context.aspectY= 200 # get the greatest range possible
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render_context.aspectX= min_asp # get the greatest range possible
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#print "xlen bigger"
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render_cam_data.scale= xlen * 2
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elif xlen < ylen:# ylen is bigger
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if asp_cam_mat > asp_image_res:
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render_context.aspectX= 200 # get the greatest range possible
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render_context.aspectY= min_asp # get the greatest range possible
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else:
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render_context.aspectY= 200 # get the greatest range possible
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render_context.aspectX= min_asp # get the greatest range possible
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#print "ylen bigger"
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render_cam_data.scale= ylen *2
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else:
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# asppect 1:1
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#print 'NOLEN Bigger'
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render_cam_data.scale= xlen * 2
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#print xlen, ylen, 'xlen, ylen'
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else:
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if width > height:
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min_asp = int((float(height) / width) * 200)
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render_context.aspectX= min_asp
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render_context.aspectY= 200
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else:
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min_asp = int((float(width) / height) * 200)
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render_context.aspectX= 200
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render_context.aspectY= min_asp
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render_cam_data.scale= 1.0
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render_cam_ob.LocZ= 1.0
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render_cam_ob.LocX= 0.5
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render_cam_ob.LocY= 0.5
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Blender.Window.RedrawAll()
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render_context.render()
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render_context.saveRenderedImage(path)
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Render.CloseRenderWindow()
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#if not B.sys.exists(PREF_IMAGE_PATH_EXPAND):
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# raise 'Error!!!'
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scn.makeCurrent()
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Scene.Unlink(render_scn)
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# NOW APPLY THE SAVED IMAGE TO THE FACES!
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#print PREF_IMAGE_PATH_EXPAND
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try:
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target_image= Image.Load(path_expand)
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return target_image
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except:
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raise 'Error: Could not render or load the image at path "%s"' % path_expand
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return
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#-----------------------------------------------------------------------------#
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# UV Baking functions, make a picture from mesh(es) uvs #
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#-----------------------------------------------------------------------------#
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def mesh2uv(me_s, PREF_SEL_FACES_ONLY=False):
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'''
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Converts a uv mapped mesh into a 2D Mesh from UV coords.
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returns a triple -
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(mesh2d, face_list, col_list)
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"mesh" is the new mesh and...
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"face_list" is the faces that were used to make the mesh,
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"material_list" is a list of materials used by each face
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These are in alligned with the meshes faces, so you can easerly copy data between them
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'''
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render_me= Blender.Mesh.New()
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render_me.verts.extend( [Vector(0,0,0),] ) # 0 vert uv bugm dummy vert
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face_list= []
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material_list= []
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for me in me_s:
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me_materials= me.materials
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if PREF_SEL_FACES_ONLY:
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me_faces= [f for f in me.faces if f.sel]
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else:
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me_faces= me.faces
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face_list.extend(me_faces)
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# Dittro
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if me_materials:
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material_list.extend([me_materials[f.mat] for f in me_faces])
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else:
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material_list.extend([None]*len(me_faces))
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# Now add the verts
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render_me.verts.extend( [ Vector(uv.x, uv.y, 0) for f in face_list for uv in f.uv ] )
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# Now add the faces
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tmp_faces= []
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vert_offset= 1
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for f in face_list:
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tmp_faces.append( [ii+vert_offset for ii in xrange(len(f))] )
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vert_offset+= len(f)
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render_me.faces.extend(tmp_faces)
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render_me.faceUV=1
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return render_me, face_list, material_list
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def uvmesh_apply_normals(render_me, face_list):
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'''Worldspace normals to vertex colors'''
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for i, f in enumerate(render_me.faces):
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face_orig= face_list[i]
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f_col= f.col
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for j, v in enumerate(face_orig):
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c= f_col[j]
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nx, ny, nz= v.no
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c.r= int((nx+1)*128)-1
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c.g= int((ny+1)*128)-1
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c.b= int((nz+1)*128)-1
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def uvmesh_apply_image(render_me, face_list):
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'''Copy the image and uvs from the original faces'''
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for i, f in enumerate(render_me.faces):
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f.uv= face_list[i].uv
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f.image= face_list[i].image
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def uvmesh_apply_vcol(render_me, face_list):
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'''Copy the vertex colors from the original faces'''
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for i, f in enumerate(render_me.faces):
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face_orig= face_list[i]
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f_col= f.col
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for j, c_orig in enumerate(face_orig.col):
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c= f_col[j]
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c.r= c_orig.r
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c.g= c_orig.g
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c.b= c_orig.b
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def uvmesh_apply_matcol(render_me, material_list):
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'''Get the vertex colors from the original materials'''
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for i, f in enumerate(render_me.faces):
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mat_orig= material_list[i]
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f_col= f.col
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if mat_orig:
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for c in f_col:
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c.r= int(mat_orig.R*255)
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c.g= int(mat_orig.G*255)
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c.b= int(mat_orig.B*255)
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else:
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for c in f_col:
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c.r= 255
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c.g= 255
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c.b= 255
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def uvmesh_apply_col(render_me, color):
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'''Get the vertex colors from the original materials'''
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r,g,b= color
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for i, f in enumerate(render_me.faces):
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f_col= f.col
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for c in f_col:
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c.r= r
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c.g= g
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c.b= b
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def vcol2image(me_s,\
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PREF_IMAGE_PATH,\
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PREF_IMAGE_SIZE,\
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PREF_IMAGE_BLEED,\
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PREF_IMAGE_SMOOTH,\
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PREF_IMAGE_WIRE,\
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PREF_IMAGE_WIRE_INVERT,\
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PREF_IMAGE_WIRE_UNDERLAY,\
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PREF_USE_IMAGE,\
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PREF_USE_VCOL,\
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PREF_USE_MATCOL,\
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PREF_USE_NORMAL,\
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PREF_USE_TEXTURE,\
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PREF_SEL_FACES_ONLY):
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def rnd_mat():
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render_mat= Blender.Material.New()
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mode= render_mat.mode
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# Dont use lights ever
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mode |= Blender.Material.Modes.SHADELESS
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if PREF_IMAGE_WIRE:
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# Set the wire color
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if PREF_IMAGE_WIRE_INVERT:
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render_mat.rgbCol= (1,1,1)
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else:
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render_mat.rgbCol= (0,0,0)
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mode |= Blender.Material.Modes.WIRE
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if PREF_USE_VCOL or PREF_USE_MATCOL or PREF_USE_NORMAL: # both vcol and material color use vertex cols to avoid the 16 max limit in materials
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mode |= Blender.Material.Modes.VCOL_PAINT
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if PREF_USE_IMAGE:
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mode |= Blender.Material.Modes.TEXFACE
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# Copy back the mode
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render_mat.mode |= mode
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return render_mat
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render_me, face_list, material_list= mesh2uv(me_s, PREF_SEL_FACES_ONLY)
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# Normals exclude all others
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if PREF_USE_NORMAL:
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uvmesh_apply_normals(render_me, face_list)
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else:
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if PREF_USE_IMAGE:
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uvmesh_apply_image(render_me, face_list)
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uvmesh_apply_vcol(render_me, face_list)
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elif PREF_USE_VCOL:
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uvmesh_apply_vcol(render_me, face_list)
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elif PREF_USE_MATCOL:
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uvmesh_apply_matcol(render_me, material_list)
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elif PREF_USE_TEXTURE:
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# if we have more then 16 materials across all the mesh objects were stuffed :/
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# get unique materials
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tex_unique_materials= dict([(mat.name, mat) for mat in material_list]).values()[:16] # just incase we have more then 16
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tex_me= Blender.Mesh.New()
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# Backup the original shadless setting
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tex_unique_materials_shadeless= [ mat.mode & Blender.Material.Modes.SHADELESS for mat in tex_unique_materials ]
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# Turn shadeless on
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for mat in tex_unique_materials:
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mat.mode |= Blender.Material.Modes.SHADELESS
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# Assign materials
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render_me.materials= tex_unique_materials
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tex_material_indicies= dict([(mat.name, i) for i, mat in enumerate(tex_unique_materials)])
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tex_me.verts.extend([Vector(0,0,0),]) # dummy
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tex_me.verts.extend( [ Vector(v.co) for f in face_list for v in f ] )
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# Now add the faces
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tmp_faces= []
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vert_offset= 1
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for f in face_list:
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tmp_faces.append( [ii+vert_offset for ii in xrange(len(f))] )
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vert_offset+= len(f)
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tex_me.faces.extend(tmp_faces)
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# Now we have the faces, put materials and normal, uvs into the mesh
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if len(tex_me.faces) != len(face_list):
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# Should never happen
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raise "Error face length mismatch"
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# Copy data to the mesh that could be used as texture coords
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for i, tex_face in enumerate(tex_me.faces):
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orig_face= face_list[i]
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# Set the material index
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try:
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render_face.mat= tex_material_indicies[ material_list[i].name ]
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except:
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# more then 16 materials
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pass
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# set the uvs on the texmesh mesh
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tex_face.uv= orig_face.uv
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orig_face_v= orig_face.v
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# Set the normals
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for j, v in enumerate(tex_face):
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v.no= orig_face_v[j].no
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# Set the texmesh
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render_me.texMesh= tex_me
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# END TEXMESH
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# Handel adding objects
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render_ob= Blender.Object.New('Mesh')
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render_ob.link(render_me)
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if not PREF_USE_TEXTURE: # textures use the original materials
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render_me.materials= [rnd_mat()]
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obs= [render_ob]
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if PREF_IMAGE_WIRE_UNDERLAY:
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# Make another mesh with the material colors
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render_me_under, face_list, material_list= mesh2uv(me_s, PREF_SEL_FACES_ONLY)
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uvmesh_apply_matcol(render_me_under, material_list)
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# Handel adding objects
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render_ob= Blender.Object.New('Mesh')
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render_ob.link(render_me_under)
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render_ob.LocZ= -0.01
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# Add material and disable wire
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mat= rnd_mat()
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mat.rgbCol= 1,1,1
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mat.alpha= 0.5
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mat.mode &= ~Blender.Material.Modes.WIRE
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mat.mode |= Blender.Material.Modes.VCOL_PAINT
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render_me_under.materials= [mat]
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obs.append(render_ob)
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elif PREF_IMAGE_BLEED and not PREF_IMAGE_WIRE:
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# EVIL BLEEDING CODE!! - Just do copys of the mesh and place behind. Crufty but better then many other methods I have seen. - Cam
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BLEED_PIXEL= 1.0/PREF_IMAGE_SIZE
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z_offset= 0.0
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for i in xrange(PREF_IMAGE_BLEED):
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for diag1, diag2 in ((-1,-1),(-1,1),(1,-1),(1,1), (1,0), (0,1), (-1,0), (0, -1)): # This line extends the object in 8 different directions, top avoid bleeding.
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render_ob= Blender.Object.New('Mesh')
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render_ob.link(render_me)
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render_ob.LocX= (i+1)*diag1*BLEED_PIXEL
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render_ob.LocY= (i+1)*diag2*BLEED_PIXEL
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render_ob.LocZ= -z_offset
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obs.append(render_ob)
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z_offset += 0.01
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image= imageFromObjectsOrtho(obs, PREF_IMAGE_PATH, PREF_IMAGE_SIZE, PREF_IMAGE_SIZE, PREF_IMAGE_SMOOTH)
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# Clear from memory as best as we can
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render_me.verts= None
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if PREF_IMAGE_WIRE_UNDERLAY:
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render_me_under.verts= None
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if PREF_USE_TEXTURE:
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tex_me.verts= None
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# Restire Shadeless setting
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for i, mat in enumerate(tex_unique_materials):
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# we know there all on so turn it off of its not set
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if not tex_unique_materials_shadeless[i]:
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mat.mode &= ~Blender.Material.Modes.SHADELESS
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return image
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def bakeToPlane(sce, ob_from, width, height, bakemodes, axis='z', margin=0, depth=32):
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'''
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Bakes terrain onto a plane from one object
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sce - scene to bake with
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ob_from - mesh object
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width/height - image size
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bakemodes - list of baking modes to use, Blender.Scene.Render.BakeModes.NORMALS, Blender.Scene.Render.BakeModes.AO ... etc
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axis - axis to allign the plane to.
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margin - margin setting for baking.
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depth - bit depth for the images to bake into, (32 or 128 for floating point images)
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Example:
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import Blender
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from Blender import *
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import BPyRender
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sce = Scene.GetCurrent()
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ob = Object.Get('Plane')
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BPyRender.bakeToPlane(sce, ob, 512, 512, [Scene.Render.BakeModes.DISPLACEMENT, Scene.Render.BakeModes.NORMALS], 'z', 8 )
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'''
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# Backup bake settings
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rend = sce.render
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BACKUP_bakeDist = rend.bakeDist
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BACKUP_bakeBias = rend.bakeBias
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BACKUP_bakeMode = rend.bakeMode
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BACKUP_bakeClear = rend.bakeClear
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BACKUP_bakeMargin = rend.bakeMargin
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BACKUP_bakeToActive = rend.bakeToActive
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BACKUP_bakeNormalize = rend.bakeNormalize
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# Backup object selection
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BACKUP_obsel = list(sce.objects.selected)
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BACKUP_obact = sce.objects.active
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# New bake settings
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rend.bakeClear = True
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rend.bakeMargin = margin
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rend.bakeToActive = True
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rend.bakeNormalize = True
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# Assume a mesh
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me_from = ob_from.getData(mesh=1)
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xmin = ymin = zmin = 10000000000
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xmax = ymax = zmax =-10000000000
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# Dont trust bounding boxes :/
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#bounds = ob_from.boundingBox
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#for v in bounds:
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# x,y,z = tuple(v)
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mtx = ob_from.matrixWorld
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for v in me_from.verts:
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x,y,z = tuple(v.co*mtx)
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xmax = max(xmax, x)
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ymax = max(ymax, y)
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zmax = max(zmax, z)
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xmin = min(xmin, x)
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ymin = min(ymin, y)
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zmin = min(zmin, z)
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if axis=='x':
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xmed = (xmin+xmax)/2.0
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co1 = (xmed, ymin, zmin)
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co2 = (xmed, ymin, zmax)
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co3 = (xmed, ymax, zmax)
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co4 = (xmed, ymax, zmin)
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rend.bakeDist = ((xmax-xmin)/2.0) + 0.000001 # we need a euler value for this since it
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elif axis=='y':
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ymed = (ymin+ymax)/2.0
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co1 = (xmin, ymed, zmin)
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co2 = (xmin, ymed, zmax)
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co3 = (xmax, ymed, zmax)
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co4 = (xmax, ymed, zmin)
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rend.bakeDist = ((ymax-ymin)/2.0) + 0.000001
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elif axis=='z':
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zmed = (zmin+zmax)/2.0
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co1 = (xmin, ymin, zmed)
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co2 = (xmin, ymax, zmed)
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co3 = (xmax, ymax, zmed)
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co4 = (xmax, ymin, zmed)
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rend.bakeDist = ((zmax-zmin)/2.0) + 0.000001
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else:
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raise "invalid axis"
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me_plane = Blender.Mesh.New()
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ob_plane = Blender.Object.New('Mesh')
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ob_plane.link(me_plane)
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sce.objects.link(ob_plane)
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ob_plane.Layers = ob_from.Layers
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ob_from.sel = 1 # make active
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sce.objects.active = ob_plane
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ob_plane.sel = 1
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me_plane.verts.extend([co4, co3, co2, co1])
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me_plane.faces.extend([(0,1,2,3)])
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me_plane.faceUV = True
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me_plane_face = me_plane.faces[0]
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uvs = me_plane_face.uv
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uvs[0].x = 0.0; uvs[0].y = 0.0
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uvs[1].x = 0.0; uvs[1].y = 1.0
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uvs[2].x = 1.0; uvs[2].y = 1.0
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uvs[3].x = 1.0; uvs[3].y = 0.0
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images_return = []
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for mode in bakemodes:
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img = Blender.Image.New('bake', width, height, depth)
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me_plane_face.image = img
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rend.bakeMode = mode
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rend.bake()
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images_return.append( img )
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# Restore bake settings
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#'''
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rend.bakeDist = BACKUP_bakeDist
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rend.bakeBias = BACKUP_bakeBias
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rend.bakeMode = BACKUP_bakeMode
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rend.bakeClear = BACKUP_bakeClear
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rend.bakeMargin = BACKUP_bakeMargin
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rend.bakeToActive = BACKUP_bakeToActive
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rend.bakeNormalize = BACKUP_bakeNormalize
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# Restore obsel
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sce.objects.selected = BACKUP_obsel
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sce.objects.active = BACKUP_obact
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me_plane.verts = None
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sce.objects.unlink(ob_plane)
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#'''
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return images_return
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