Function centerPixel

tests/SphericalEffect.cpp:40–45

Helpers to sample pixels

// Helpers to sample pixels
static QColor centerPixel(SphericalProjection &e, std::shared_ptr<Frame> f) {
  auto img = e.GetFrame(f, 1)->GetImage();
  int cx = img->width() / 2;
  int cy = img->height() / 2;
  return img->pixelColor(cx, cy);
}

static QColor offsetPixel(std::shared_ptr<QImage> img, int dx, int dy) {
  const int cx = img->width() / 2 + dx;