Function MakeRectToRectMatrix

src/core/utils/RectToRectMatrix.cpp:21–33

#include "core/utils/RectToRectMatrix.h"
namespace tgfx {
Matrix MakeRectToRectMatrix(const Rect& srcRect, const Rect& dstRect) {
  if (srcRect.isEmpty()) {
    return Matrix::I();
  }
  if (dstRect.isEmpty()) {
    return Matrix::MakeAll(0, 0, 0, 0, 0, 0);
  }
  float sx = dstRect.width() / srcRect.width();
  float sy = dstRect.height() / srcRect.height();
  float tx = dstRect.left - srcRect.left * sx;
  float ty = dstRect.top - srcRect.top * sy;
  return Matrix::MakeAll(sx, 0, tx, 0, sy, ty);
}
}  // namespace tgfx