//printf("Zoom in... Center=%.2f,%.2f; ", center.x, center.y);
center = Painter::QtToCartesianCoords(center);
//printf("(%.2f,%.2f); origin=%.2f,%.2f; ", center.x, center.y, Painter::origin.x, Painter::origin.y);
//printf("Zoom in... Center=%.2f,%.2f; ", center.x, center.y);
center = Painter::QtToCartesianCoords(center);
//printf("(%.2f,%.2f); origin=%.2f,%.2f; ", center.x, center.y, Painter::origin.x, Painter::origin.y);