at_splat_extrapolate()

Tile2x2_u8 fl::Corkscrew::at_splat_extrapolate ( float i ) const

private

Definition at line 132 of file corkscrew.cpp.

                                                        {
    if (i >= mNumLeds) {
        // Handle out-of-bounds access, possibly by returning a default
        // Tile2x2_u8
        FASTLED_ASSERT(false, "Out of bounds access in Corkscrew at_splat: "
                                  << i << " size: " << mNumLeds);
        return Tile2x2_u8();
    }
    
    // Use the splat function to convert the vec2f to a Tile2x2_u8
    float i_floor = floorf(i);
    float i_ceil = ceilf(i);
    if (ALMOST_EQUAL_FLOAT(i_floor, i_ceil)) {
        // If the index is the same, just return the splat of that index
        vec2f position = at_no_wrap(static_cast<fl::u16>(i_floor));
        return splat(position);
    } else {
        // Interpolate between the two points and return the splat of the result
        vec2f pos1 = at_no_wrap(static_cast<fl::u16>(i_floor));
        vec2f pos2 = at_no_wrap(static_cast<fl::u16>(i_ceil));
        float t = i - i_floor;
        vec2f interpolated_pos = map_range(t, 0.0f, 1.0f, pos1, pos2);
        return splat(interpolated_pos);
    }
}

References ALMOST_EQUAL_FLOAT, at_no_wrap(), mNumLeds, fl::splat(), and t.

Referenced by calculateTileAtWrap().

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