Function DrawKeypoints

src/colmap/ui/qt_utils.cc:83–105

}

void DrawKeypoints(QPixmap* pixmap,
                   const FeatureKeypoints& points,
                   const QColor& color) {
  if (pixmap->isNull()) {
    return;
  }

  const int pen_width = std::max(pixmap->width(), pixmap->height()) / 2048 + 1;
  const int radius = 3 * pen_width + (3 * pen_width) % 2;
  const float radius2 = radius / 2.0f;

  QPainter painter(pixmap);
  painter.setRenderHint(QPainter::Antialiasing);

  QPen pen;
  pen.setWidth(pen_width);
  pen.setColor(color);
  painter.setPen(pen);

  for (const auto& point : points) {
    painter.drawEllipse(point.x - radius2, point.y - radius2, radius, radius);
  }
}

QPixmap DrawMatches(const QPixmap& image1,
                    const QPixmap& image2,