sampleNearest()

CRGB fl::sampleNearest	(	const CRGB *	grid,
		const XYMap &	xyMap,
		float	x,
		float	y )

Nearest-neighbor sample from a 2D CRGB grid.

Definition at line 43 of file sample.cpp.hpp.

                                                                                        {
    int xi = static_cast<int>(x + 0.5f); // Round to nearest
    int yi = static_cast<int>(y + 0.5f);
    xi = max(0, min(xi, static_cast<int>(xyMap.getWidth()) - 1));
    yi = max(0, min(yi, static_cast<int>(xyMap.getHeight()) - 1));
    return grid[xyMap.mapToIndex(xi, yi)];
}

References FL_NO_EXCEPT, max(), min(), x, xyMap, and y.

Referenced by sample().

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