/*!
*/
int
Circle2D::intersection( const Ray2D & ray,
Vector2D * sol1,
Vector2D * sol2 ) const
{
Line2D line( ray.origin(), ray.dir() );
Vector2D tsol1, tsol2;
int n_sol = intersection( line, &tsol1, &tsol2 );
if ( n_sol > 1
&& ! ray.inRightDir( tsol2, 1.0 ) )
{
--n_sol;
}
if ( n_sol > 0
&& ! ray.inRightDir( tsol1, 1.0 ) )
{
tsol1 = tsol2; // substituted by second solution
--n_sol;
}
if ( n_sol > 0 && sol1 )
{
*sol1 = tsol1;
}
if ( n_sol > 1 && sol2 )
{
*sol2 = tsol2;
}
return n_sol;
}
glm::vec2 Ray2DIntersectionPoint(const Ray2D & a, const Ray2D & b, bool & exists)
{
return Ray2DIntersectionPoint(a.origin(), a.direction(), b.origin(), b.direction(), exists);
}
float PointRay2DHalfspace(const glm::vec2 & point,
const Ray2D & ray)
{
return PointRay2DHalfspace(point, ray.origin(), ray.direction());
}
