Interpolate()

fl::vector_fixed< Tile2x2_u8_wrap, 2 > fl::Tile2x2_u8_wrap::Interpolate ( const Tile2x2_u8_wrap & a, const Tile2x2_u8_wrap & b, float t )

static

Definition at line 127 of file tile2x2.cpp.hpp.

                                                                                                                           {
    fl::vector_fixed<Tile2x2_u8_wrap, 2> result;
    
    // Clamp t to [0, 1]
    if (t <= 0.0f) {
        result.push_back(a);
        return result;
    }
    if (t >= 1.0f) {
        result.push_back(b);
        return result;
    }
    
    // Create interpolated tile
    Tile2x2_u8_wrap interpolated;
    
    // Interpolate each of the 4 positions
    for (u16 x = 0; x < 2; ++x) {
        for (u16 y = 0; y < 2; ++y) {
            const auto& data_a = a.at(x, y);
            const auto& data_b = b.at(x, y);
            
            // For now, assume positions are the same or close enough
            // Use position from 'a' as the base
            vec2<u16> pos = data_a.first;
            
            // Simple linear interpolation for alpha values
            u8 alpha_a = data_a.second;
            u8 alpha_b = data_b.second;
            
            // Linear interpolation: a + t * (b - a)
            float alpha_float = alpha_a + t * (alpha_b - alpha_a);
            u8 interpolated_alpha = static_cast<u8>(alpha_float + 0.5f); // Round to nearest
            
            interpolated.mData[y][x] = {pos, interpolated_alpha};
        }
    }
    
    result.push_back(interpolated);
    return result;
}

References Tile2x2_u8_wrap(), at(), mData, pos, fl::t, fl::x, and fl::y.

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