private ProcessRasterBlockDimensionDelegate CreateProcessBlockDimensionDelegate(int dimension, int[] windowPos, int[] windowSize,
ProcessRasterWindowSpanDelegate processWindowSpanDelegate, int[] rasterTileOfs, int[] blockRasterTileOfs, int[] windowOfs, int[] blockWindowOfs, int[] blockSize)
{
int rasterTileSizeD = m_tileSize[dimension];
int windowSizeD = windowSize[dimension];
if (dimension > 0)
{
ProcessRasterBlockDimensionDelegate innerDelegate = CreateProcessBlockDimensionDelegate(dimension - 1, windowPos, windowSize, processWindowSpanDelegate, rasterTileOfs, blockRasterTileOfs, windowOfs, blockWindowOfs, blockSize);
return(delegate(int rasterTileBaseIndex, int rasterTileIndexOfs, int windowIndexOfs)
{
int rasterTileOfsD = rasterTileOfs[dimension];
int windowOfsD = windowOfs[dimension];
int blockSizeD = blockSize[dimension];
for (int blockOfsD = 0; blockOfsD < blockSizeD; ++rasterTileOfsD, ++windowOfsD, ++blockOfsD)
{
int innerRasterTileIndexOfs = rasterTileIndexOfs * rasterTileSizeD + rasterTileOfsD;
int innerWindowIndexOfs = windowIndexOfs * windowSizeD + windowOfsD;
blockRasterTileOfs[dimension] = rasterTileOfsD;
blockWindowOfs[dimension] = windowOfsD;
innerDelegate(rasterTileBaseIndex, innerRasterTileIndexOfs, innerWindowIndexOfs);
}
});
}
else
{
return(delegate(int rasterTileBaseIndex, int rasterTileIndexOfs, int windowIndexOfs)
{
int rasterTileOfsD = rasterTileOfs[dimension];
int windowOfsD = windowOfs[dimension];
int blockSizeD = blockSize[dimension];
int innerRasterTileIndexOfs = rasterTileIndexOfs * rasterTileSizeD + rasterTileOfsD;
int innerWindowIndexOfs = windowIndexOfs * windowSizeD + windowOfsD;
blockRasterTileOfs[dimension] = rasterTileOfsD;
blockWindowOfs[dimension] = windowOfsD;
int rasterIndex = rasterTileBaseIndex + innerRasterTileIndexOfs;
processWindowSpanDelegate(rasterIndex, blockRasterTileOfs, innerWindowIndexOfs, blockWindowOfs, blockSizeD);
});
}
}
private ProcessRasterWindowDimensionDelegate CreateProcessRasterWindowDimensionDelegate(int dimension, bool useVertices, int[] windowPos, int[] windowSize,
ProcessRasterWindowSpanDelegate processRasterWindowSpanDelegate, int[] rasterTileOfs, int[] windowOfs, int[] blockSize)
{
int rasterSizeD = useVertices ? m_raster.GetVertexIndexCount(dimension) : m_raster.GetVertexIndexCount(dimension) - 1;
int tileSizeD = m_tileSize[dimension];
int tileCountD = (rasterSizeD + tileSizeD - 1) / tileSizeD;
int windowSizeD = windowSize[dimension];
int windowPosD = windowPos[dimension];
ProcessRasterWindowDimensionDelegate innerDelegate;
if (dimension > 0)
{
innerDelegate = CreateProcessRasterWindowDimensionDelegate(dimension - 1, useVertices, windowPos, windowSize, processRasterWindowSpanDelegate, rasterTileOfs, windowOfs, blockSize);
return(delegate(int rasterTileNum)
{
int windowOfsD = 0;
while (windowOfsD < windowSizeD)
{
int rasterPosD = windowPosD + windowOfsD;
if (rasterPosD < 0)
{
windowOfsD += -rasterPosD;
continue;
}
if (rasterPosD >= rasterSizeD)
{
break;
}
int rasterTileNumD = rasterPosD / tileSizeD;
int rasterTileOfsD = rasterPosD % tileSizeD;
int innerRasterTileNum = rasterTileNum * tileCountD + rasterTileNumD;
int nextRasterPosD = (rasterTileNumD + 1) * tileSizeD;
if (nextRasterPosD > rasterSizeD)
{
nextRasterPosD = rasterSizeD;
}
if (nextRasterPosD > windowPosD + windowSizeD)
{
nextRasterPosD = windowPosD + windowSizeD;
}
rasterTileOfs[dimension] = rasterTileOfsD;
windowOfs[dimension] = windowOfsD;
blockSize[dimension] = nextRasterPosD - rasterPosD;
innerDelegate(innerRasterTileNum);
windowOfsD += nextRasterPosD - rasterPosD;
}
});
}
else
{
int rasterTileIndexCount = m_tileIndexCount;
int rasterDimension = m_raster.Dimension;
int[] blockRasterTileOfs = new int[rasterDimension];
int[] blockWindowOfs = new int[rasterDimension];
ProcessRasterBlockDimensionDelegate processRasterBlockDelegate = CreateProcessBlockDimensionDelegate(rasterDimension - 1, windowPos, windowSize, processRasterWindowSpanDelegate, rasterTileOfs, blockRasterTileOfs, windowOfs, blockWindowOfs, blockSize);
return(delegate(int rasterTileNum)
{
int windowOfsD = 0;
while (windowOfsD < windowSizeD)
{
int rasterPosD = windowPosD + windowOfsD;
if (rasterPosD < 0)
{
windowOfsD += -rasterPosD;
continue;
}
if (rasterPosD >= rasterSizeD)
{
break;
}
int rasterTileNumD = rasterPosD / tileSizeD;
int rasterTileOfsD = rasterPosD % tileSizeD;
int innerRasterTileNum = rasterTileNum * tileCountD + rasterTileNumD;
int nextRasterPosD = (rasterTileNumD + 1) * tileSizeD;
if (nextRasterPosD > rasterSizeD)
{
nextRasterPosD = rasterSizeD;
}
if (nextRasterPosD > windowPosD + windowSizeD)
{
nextRasterPosD = windowPosD + windowSizeD;
}
rasterTileOfs[dimension] = rasterTileOfsD;
windowOfs[dimension] = windowOfsD;
blockSize[dimension] = nextRasterPosD - rasterPosD;
int rasterTileBaseIndex = innerRasterTileNum * rasterTileIndexCount;
processRasterBlockDelegate(rasterTileBaseIndex, 0, 0);
windowOfsD += nextRasterPosD - rasterPosD;
}
});
}
}
