Function scaleNearest

source/core/StarImageScaling.cpp:7–20

namespace Star {

Image scaleNearest(Image const& srcImage, Vec2F const& scale) {
  Vec2U srcSize = srcImage.size();
  Vec2U destSize = Vec2U::round(vmult(Vec2F(srcSize), scale));
  destSize[0] = max(destSize[0], 1u);
  destSize[1] = max(destSize[1], 1u);

  Image destImage(destSize, srcImage.pixelFormat());

  for (unsigned y = 0; y < destSize[1]; ++y) {
    for (unsigned x = 0; x < destSize[0]; ++x)
      destImage.set({x, y}, srcImage.clamp(Vec2I::round(vdiv(Vec2F(x, y), scale))));
  }
  return destImage;
}

Image scaleBilinear(Image const& srcImage, Vec2F const& scale) {
  Vec2U srcSize = srcImage.size();