def testTo(self):
self.assertEqual(zigZagEncode(-1), 1)
self.assertEqual(zigZagEncode(-2), 3)
self.assertEqual(zigZagEncode(0), 0)
self.assertEqual(zigZagEncode(1), 2)
self.assertEqual(zigZagEncode(2), 4)
self.assertEqual(zigZagEncode(-1000000), 1999999)
self.assertEqual(zigZagEncode(1000000), 2000000)
def testTo(self):
self.assertEqual(zigZagEncode(-1), 1)
self.assertEqual(zigZagEncode(-2), 3)
self.assertEqual(zigZagEncode(0), 0)
self.assertEqual(zigZagEncode(1), 2)
self.assertEqual(zigZagEncode(2), 4)
self.assertEqual(zigZagEncode(-1000000), 1999999)
self.assertEqual(zigZagEncode(1000000), 2000000)
def _writeTo(self, f):
# Header
for k, v in TerrainTile.quantizedMeshHeader.iteritems():
f.write(packEntry(v, self.header[k]))
# Delta decoding
vertexCount = len(self.u)
# Vertices
f.write(packEntry(TerrainTile.vertexData['vertexCount'], vertexCount))
# Move the initial value
f.write(
packEntry(TerrainTile.vertexData['uVertexCount'], zigZagEncode(self.u[0]))
)
for i in xrange(0, vertexCount - 1):
ud = self.u[i + 1] - self.u[i]
f.write(packEntry(TerrainTile.vertexData['uVertexCount'], zigZagEncode(ud)))
f.write(
packEntry(TerrainTile.vertexData['uVertexCount'], zigZagEncode(self.v[0]))
)
for i in xrange(0, vertexCount - 1):
vd = self.v[i + 1] - self.v[i]
f.write(packEntry(TerrainTile.vertexData['vVertexCount'], zigZagEncode(vd)))
f.write(
packEntry(TerrainTile.vertexData['uVertexCount'], zigZagEncode(self.h[0]))
)
for i in xrange(0, vertexCount - 1):
hd = self.h[i + 1] - self.h[i]
f.write(
packEntry(TerrainTile.vertexData['heightVertexCount'], zigZagEncode(hd))
)
# Indices
# TODO: verify padding
meta = TerrainTile.indexData16
if vertexCount > TerrainTile.BYTESPLIT:
meta = TerrainTile.indexData32
f.write(packEntry(meta['triangleCount'], len(self.indices) / 3))
ind = encodeIndices(self.indices)
packIndices(f, meta['indices'], ind)
meta = TerrainTile.EdgeIndices16
if vertexCount > TerrainTile.BYTESPLIT:
meta = TerrainTile.EdgeIndices32
f.write(packEntry(meta['westVertexCount'], len(self.westI)))
for wi in self.westI:
f.write(packEntry(meta['westIndices'], wi))
f.write(packEntry(meta['southVertexCount'], len(self.southI)))
for si in self.southI:
f.write(packEntry(meta['southIndices'], si))
f.write(packEntry(meta['eastVertexCount'], len(self.eastI)))
for ei in self.eastI:
f.write(packEntry(meta['eastIndices'], ei))
f.write(packEntry(meta['northVertexCount'], len(self.northI)))
for ni in self.northI:
f.write(packEntry(meta['northIndices'], ni))
# Extension header for light
if len(self.vLight) > 0:
self.hasLighting = True
meta = TerrainTile.ExtensionHeader
# Extension header ID is 1 for lightening
f.write(packEntry(meta['extensionId'], 1))
# Unsigned char size len is 1
f.write(packEntry(meta['extensionLength'], 2 * vertexCount))
# Add 2 bytes of padding
f.write(packEntry('B', 1))
f.write(packEntry('B', 1))
metaV = TerrainTile.OctEncodedVertexNormals
for i in xrange(0, vertexCount - 1):
x, y = octEncode(self.vLight[i])
f.write(packEntry(metaV['xy'], x))
f.write(packEntry(metaV['xy'], y))
if len(self.watermask) > 0:
self.hasWatermask = True
# Extension header ID is 2 for lightening
meta = TerrainTile.ExtensionHeader
f.write(packEntry(meta['extensionId'], 2))
# Extension header meta
nbRows = len(self.watermask)
if nbRows > 1:
# Unsigned char size len is 1
f.write(packEntry(meta['extensionLength'], TILEPXS))
if nbRows != 256:
raise Exception(
'Unexpected number of rows for the watermask: %s' % nbRows
)
# From North to South
for i in xrange(0, nbRows):
x = self.watermask[i]
if len(x) != 256:
raise Exception(
'Unexpected number of columns for the watermask: %s' % len(x)
)
# From West to East
for y in x:
f.write(packEntry(TerrainTile.WaterMask['xy'], int(y)))
else:
f.write(packEntry(meta['extensionLength'], 1))
if self.watermask[0][0] is None:
self.watermask[0][0] = 0
f.write(packEntry(TerrainTile.WaterMask['xy'], int(self.watermask[0][0])))
def testBoth(self):
self.assertEqual(-1, zigZagDecode(zigZagEncode(-1)))
self.assertEqual(-2, zigZagDecode(zigZagEncode(-2)))
self.assertEqual(0, zigZagDecode(zigZagEncode(0)))
self.assertEqual(1, zigZagDecode(zigZagEncode(1)))
self.assertEqual(2, zigZagDecode(zigZagEncode(2)))
self.assertEqual(-10000, zigZagDecode(zigZagEncode(-10000)))
self.assertEqual(10000, zigZagDecode(zigZagEncode(10000)))
self.assertEqual(0, zigZagEncode(zigZagDecode(0)))
self.assertEqual(1, zigZagEncode(zigZagDecode(1)))
self.assertEqual(2, zigZagEncode(zigZagDecode(2)))
self.assertEqual(2000000, zigZagEncode(zigZagDecode(2000000)))
def testBoth(self):
self.assertEqual(-1, zigZagDecode(zigZagEncode(-1)))
self.assertEqual(-2, zigZagDecode(zigZagEncode(-2)))
self.assertEqual(0, zigZagDecode(zigZagEncode(0)))
self.assertEqual(1, zigZagDecode(zigZagEncode(1)))
self.assertEqual(2, zigZagDecode(zigZagEncode(2)))
self.assertEqual(-10000, zigZagDecode(zigZagEncode(-10000)))
self.assertEqual(10000, zigZagDecode(zigZagEncode(10000)))
self.assertEqual(0, zigZagEncode(zigZagDecode(0)))
self.assertEqual(1, zigZagEncode(zigZagDecode(1)))
self.assertEqual(2, zigZagEncode(zigZagDecode(2)))
self.assertEqual(2000000, zigZagEncode(zigZagDecode(2000000)))