C++ (Cpp) ofVec2f::getInterpolated示例

示例#1

文件： Geometry.cpp 项目： DanielTillett/OpenFit

ofVec2f closestPointOnRay(const ofVec2f& p1, const ofVec2f& p2, const ofVec2f& p3) {
	if(p1 == p2) {
		return p1;
	}
	
	float u = (p3.x - p1.x) * (p2.x - p1.x);
	u += (p3.y - p1.y) * (p2.y - p1.y);
	float len = (p2 - p1).length();
	u /= (len * len);
	
	return p1.getInterpolated(p2, u);
}

示例#2

文件： closestpoint.cpp 项目： rpietruc/qmediamodeler

ofVec2f closestPointOnLine(const ofVec2f& p1, const ofVec2f& p2, const ofVec2f& p3) {
    if(p1 == p2) {
        return p1;
    }

    float u = (p3.x - p1.x) * (p2.x - p1.x);
    u += (p3.y - p1.y) * (p2.y - p1.y);
    float len = (p2 - p1).length();
    u /= (len * len);

    // clamp u
    if(u > 1) {
        u = 1;
    } else if(u < 0) {
        u = 0;
    }
    return p1.getInterpolated(p2, u);
}