本文整理汇总了C++中vec::Length方法的典型用法代码示例。如果您正苦于以下问题：C++ vec::Length方法的具体用法？C++ vec::Length怎么用？C++ vec::Length使用的例子？那么, 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vec的用法示例。
在下文中一共展示了vec::Length方法的2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: FitThroughPoints
/** For reference, see http://realtimecollisiondetection.net/blog/?p=20 . */
Sphere Sphere::FitThroughPoints(const vec &a, const vec &b, const vec &c)
{
Sphere sphere;
vec ab = b-a;
vec ac = c-a;
float s, t;
bool success = FitSphereThroughPoints(ab, ac, s, t);
if (!success)
{
LOGW("Sphere::FitThroughPoints(a,b,c) failed! The three input points are collinear!");
sphere.SetDegenerate();
return sphere;
}
const vec p = s*ab + t*ac;
// In our translated coordinate space, the origin lies on the sphere, so the distance of p from origin
// gives the radius of the sphere.
sphere.r = p.Length();
// Translate back to original coordinate space.
sphere.pos = a + p;
return sphere;
}示例2: ExtremePoint
vec Sphere::ExtremePoint(const vec &direction) const
{
float len = direction.Length();
assume(len > 0.f);
return pos + direction * (r / len);
}