| 5 | #include "util/color.hpp" |
| 6 | |
| 7 | constexpr Util::Color GetCheckerPixelColor(int32_t x, int32_t y, Util::Color checkerColor, double renderScale, bool invert = false) noexcept |
| 8 | { |
| 9 | constexpr int32_t CHECKER_SIZE_PRE_SCALE = 4; |
| 10 | const int32_t checkerSize = static_cast<int32_t>(CHECKER_SIZE_PRE_SCALE * renderScale); |
| 11 | |
| 12 | // We want the checkered pattern to alternate both vertically and horizontally. |
| 13 | // In order to achieve that, we'll toggle visibility of the current pixel on or off |
| 14 | // depending on both its x- and its y-position. If x == CheckerSize, we'll turn visibility off, |
| 15 | // but then if y == CheckerSize, we'll turn it back on. |
| 16 | // The below is a shorthand for the above intent. |
| 17 | bool pixelShouldBeBlank = (x / checkerSize + y / checkerSize) % 2 == 0 ? 255 : 0; |
| 18 | |
| 19 | if (invert) |
| 20 | { |
| 21 | pixelShouldBeBlank = !pixelShouldBeBlank; |
| 22 | } |
| 23 | |
| 24 | if (pixelShouldBeBlank) |
| 25 | { |
| 26 | return { }; |
| 27 | } |
| 28 | else |
| 29 | { |
| 30 | return checkerColor.Premultiply(); |
| 31 | } |
| 32 | } |
| 33 | |
| 34 | constexpr Util::Color CompositeColors(Util::Color bottom, Util::Color top) noexcept |
| 35 | { |
no test coverage detected