makeRingScreenMap()

fl::ScreenMap makeRingScreenMap	(	int	numLeds,
		int	gridWidth,
		int	gridHeight,
		float	diameter )

Definition at line 10 of file ring_screenmap.cpp.

                                                {
    return fl::ScreenMap(numLeds, diameter, [=](int index, fl::vec2f &pt_out) {
        float centerX = gridWidth / 2.0f;
        float centerY = gridHeight / 2.0f;
        float radius = fl::min(gridWidth, gridHeight) / 2.0f - 1;
        float angle = (TWO_PI * index) / numLeds;
        pt_out.x = centerX + fl::cos(angle) * radius;
        pt_out.y = centerY + fl::sin(angle) * radius;
    });
}

References fl::cos(), fl::min(), fl::sin(), TWO_PI, fl::vec2< T >::x, and fl::vec2< T >::y.

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