def render(f, world, extents = None):
if extents is None:
actualExtents = world.extents
else:
actualExtents = extents
blockDefs = getMinecraftBlocksById()
def getBlockDef(blockId):
if blockId in blockDefs:
return blockDefs[blockId]
else:
return BlockDef(blockId, 'Default')
def getCombineOperator(blockDef):
if blockDef.transparent:
return 'merge'
else:
return 'union'
def writeBoundedBy(chunk):
# for the question: why do we generate bounding boxes?
#
# from the povray documentation: 'Unbounded unions are always split
# into their component parts so that automatic bounding works better.'
#
# http://www.povray.org/documentation/view/3.6.1/223/#s02_01_02_08_03
cExtents = chunk.extents
if cExtents is None:
return
# TODO use sphere bounding when we got cubic shapes
# i guess spheres are faster than boxes?
f.write('bounded_by { box { <%s, %s, %s>, <%s, %s, %s> } } \n' % (-cExtents[1][0] + 1, cExtents[0][1], cExtents[0][2], -cExtents[0][0] + 1, cExtents[1][1], cExtents[1][2]))
def writeChunk(chunk, combineOperator, blockId):
# write chunk subchunks
for subChunk in chunk.chunks:
chunksLen = len(subChunk.chunks)
blocksLen = len(subChunk.blocks)
if chunksLen == 0 and blocksLen == 0:
continue
requireBlock = not ((chunksLen == 0 and blocksLen == 1) or (chunksLen == 1 and blocksLen == 0))
if requireBlock:
f.write('%s {\n' % combineOperator)
writeChunk(subChunk, combineOperator, blockId)
if requireBlock:
writeBoundedBy(subChunk)
f.write('}\n')
# write chunk blocks
for blockPos in chunk.blocks:
f.write('object{ Block%sObject translate <%s, %s, %s>}\n' % (blockId, -blockPos[0], blockPos[1], blockPos[2]))
for blockId, chunk in ChunkGenerator(6).generateChunks(world, actualExtents):
blockDef = getBlockDef(blockId)
combineOperator = getCombineOperator(blockDef)
f.write('// Block%s\n' % blockId)
f.write('%s {\n' % combineOperator)
writeChunk(chunk, combineOperator, blockId)
writeBoundedBy(chunk)
f.write('\tmaterial { Block%sMaterial }\n' % blockId)
f.write('}\n')
def testConstructor(self):
chunkAxisLen = 4
cg = ChunkGenerator(chunkAxisLen)
self.assertEqual(chunkAxisLen, cg.chunkAxisLen)
def setUp(self):
super(OneChunkWorldChunkGeneratorTest, self).setUp()
self.chunkGenerator = ChunkGenerator(4)
def setUp(self):
super(MultipleChunksWorldChunkGeneratorTest, self).setUp()
self.chunkGenerator = ChunkGenerator(6)
