本文整理汇总了C++中Vector2::MulScalar方法的典型用法代码示例。如果您正苦于以下问题：C++ Vector2::MulScalar方法的具体用法？C++ Vector2::MulScalar怎么用？C++ Vector2::MulScalar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Vector2的用法示例。
在下文中一共展示了Vector2::MulScalar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: CircleCircleIntersect
bool Circle::CircleCircleIntersect( Circle *a, Circle *b, Vector2 *pointAOut, Vector2 *pointBOut ){
Vector2 *d = b->m_pos->Sub( a->m_pos );
float centerDist = d->get_m_Len();
if( centerDist > a->m_radius + b->m_radius ){
// separated
pointAOut = pointBOut = 0;
return false;
} else {
// partial intersection
float r0Sqr = a->m_radius*a->m_radius;
float newCenterDist = ( r0Sqr-b->m_radius*b->m_radius+centerDist*centerDist )/( 2*centerDist );
float sqr = r0Sqr-newCenterDist*newCenterDist;
if( sqr <= 0.0 ){
// containment
pointAOut = pointBOut = 0;
return false;
}
Vector2 *P2 = a->m_pos->Add( d->MulScalar( newCenterDist/centerDist ) );
float radius = sqrt( sqr );
Vector2 *perp = b->m_pos->Sub( a->m_pos )->get_m_Perp()->get_m_Unit();
Vector2 *temp_a = P2->Add(perp->MulScalar(radius)); //TESTME
Vector2 *temp_b = P2->Sub(perp->MulScalar(radius));
pointAOut->m_x = temp_a->m_x;
pointAOut->m_y = temp_a->m_y;
pointBOut->m_x = temp_b->m_x;
pointBOut->m_y = temp_b->m_y;
return true;
}
}示例2: PointAndDistanceContainer
PointAndDistanceContainer *Circle::ClosestPointAndDistOnEdge( Vector2 *p ){
Vector2 *d = p->Sub(m_pos);
float distCenter = d->get_m_Len();
float penetration = distCenter - m_radius;
if( distCenter == 0 ){
return new PointAndDistanceContainer( m_pos->Add(new Vector2( m_radius, 0 )), -m_radius );
}
// generate point on edge
Vector2 *pow = d->MulScalar(m_radius/distCenter)->AddTo(m_pos);
return new PointAndDistanceContainer(pow, penetration);
}