本文整理汇总了C++中Vector2D::cross方法的典型用法代码示例。如果您正苦于以下问题：C++ Vector2D::cross方法的具体用法？C++ Vector2D::cross怎么用？C++ Vector2D::cross使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Vector2D的用法示例。
在下文中一共展示了Vector2D::cross方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: SegInterSeg
bool SegInterSeg(const Point2D& p0, const Point2D& p1, const Point2D& q0, const Point2D& q1,Point2D& result)
{
Vector2D direction1 = p1 - p0;
Vector2D direction2 = q1 - q0;
Real dir1Square = direction1.magnitudeSquared();
Real dir2Square = direction2.magnitudeSquared();
Real kcross = direction1.cross(direction2);
Vector2D e = q0 - p0;
if( (kcross*kcross) > EPS*EPS*dir1Square*dir2Square )
{//The intersection angle is not 0 based on relative error.||Cross(d1,d2)||^2/ (||d1||^2*||d2||^2)<=sin(a).
Real s = e.cross(direction2) / kcross;
if( LESS(s,0) || GREATER(s,1) )
return false;
Real t = e.cross(direction1) / kcross;
if( LESS(t,0) || GREATER(t,1) )
return false;
result = p0 + s*direction1;
return true;
}
return false;
}示例2: intersect
bool intersect(const Line2D& l, Vector2D& v) const {
if(parallel(l)) return false;
double t = (l.p0-p0).cross(l.dir) / dir.cross(l.dir);
v = p0 + dir * t;
return true;
}示例3: dist
double dist(const Vector2D& v) const {
return fabs(dir.cross(v-p0)) / dir.length();
}示例4: side
int side(const Vector2D& v) const {
// on line: 0, left side: 1, right side: 0
double tmp = dir.cross(v-p0);
return tmp == 0? 0 : (tmp > 0? 1 : -1);
}