at_subpixel()

Tile2x2_u8 fl::XYPathRenderer::at_subpixel

(

float

alpha

)

Definition at line 24 of file xypath_renderer.cpp.

                                                  {
    // 1) continuous point, in “pixel‐centers” coordinates [0.5 … W–0.5]
    if (!mDrawBoundsSet) {
        FASTLED_WARN("XYPathRenderer::at_subpixel: draw bounds not set");
        return Tile2x2_u8();
    }
    vec2f xy = at(alpha);
 
    // 1) shift back so whole‐pixels go 0…W–1, 0…H–1
    xy.x -= 0.5f;
    xy.y -= 0.5f;
 
    return splat(xy);
}

References at(), FASTLED_WARN, mDrawBoundsSet, fl::splat(), and xy().

Referenced by rasterize().

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