Method rotateAround

src/core/objects/object.cpp:573–595

}

void Object::rotateAround(const MapCoordF& center, qreal angle)
{
	auto sin_angle = std::sin(angle);
	auto cos_angle = std::cos(angle);
	
	for (auto& coord : coords)
	{
		auto const center_to_coord = MapCoordF(coord.x() - center.x(), coord.y() - center.y());
		coord.setX(center.x() + cos_angle * center_to_coord.x() + sin_angle * center_to_coord.y());
		coord.setY(center.y() - sin_angle * center_to_coord.x() + cos_angle * center_to_coord.y());
	}
	
	if (symbol->hasRotatableFillPattern())
	{
		rotation += angle;
		rotatePatternOrigin(center, sin_angle, cos_angle);
	}
	else if (symbol->isRotatable())
	{
		rotation += angle;
	}
	setOutputDirty();
}

void Object::rotate(qreal angle)
{