C++ (Cpp) Vec2D::interpolateToSelf示例

toxi::geom::Vec2D toxi::geom::Polygon2D::getRandomPoint()
{
	std::vector< Line2D > edges = getEdges();
	int numEdges = edges.size();
	Line2D ea = edges.at( static_cast< int > ( toxi::math::MathUtils::random( numEdges ) ) );
	Line2D * eb = nullptr;
	// and another one, making sure it's different
	while (eb == nullptr || *eb == ea) 
	{
		eb = &edges.at( static_cast< int > ( toxi::math::MathUtils::random( numEdges ) ) );
	}
	// pick a random point on edge A
	Vec2D p = ea.getA().interpolateTo(ea.getB(), toxi::math::MathUtils::random( 1.0 ) );
	// then randomly interpolate to another random point on edge B
	Vec2D ret = p.interpolateToSelf(
		eb->getA().interpolateTo(eb->getB(), toxi::math::MathUtils::random( 1.0 ) ),
		static_cast< float > ( toxi::math::MathUtils::random( 1.0 ) ) );
	delete eb;
	return ret;
}