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  /external/skia/tools/
sk_tool_utils.cpp 360 // We will actually take 2*halfFilterSize+1 samples (i.e., our filter kernel
362 int halfFilterSize = SkScalarCeilToInt(6*sigma)/2;
363 int wh = *filterSize = 2*halfFilterSize + 1;
370 temp[yOff*wh+xOff] = gaussian2d_value(xOff-halfFilterSize, yOff-halfFilterSize, sigma);
389 int halfFilterSize = (wh-1)/2;
393 int ySamp = y + yOff - halfFilterSize;
402 int xSamp = x + xOff - halfFilterSize;

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