Function PointIsBetween

test/src/CornerPinEffect.cpp:197–204

}

static bool PointIsBetween(const tgfx::Point& point, const tgfx::Point& start,
                           const tgfx::Point& end) {
  auto minX = std::min(start.x, end.x);
  auto maxX = std::max(start.x, end.x);
  auto minY = std::min(start.y, end.y);
  auto maxY = std::max(start.y, end.y);
  return minX <= point.x && point.x <= maxX && minY <= point.y && point.y <= maxY;
}

void CornerPinEffect::calculateVertexQs() {
  // https://www.reedbeta.com/blog/quadrilateral-interpolation-part-1/