|
public Intersect ( |
||
| _p0 | ||
| _p1 | ||
| _intersection | ||
| return | bool | |
// Intersection between 3 planes
public bool Intersect(Plane _p0, Plane _p1, ref float3 _intersection)
{
// Compute the intersection of 2 planes first, yielding a ray
Ray Hit = new Ray();
if (!_p0.Intersect(_p1, Hit))
{
return(false);
}
// Then compute the intersection of this ray with our plane
return(Intersect(Hit, ref _intersection));
}
// Intersection between 2 planes
public bool Intersect(Plane _p, Ray _ray)
{
// Check if both planes are coplanar
if ((float)System.Math.Abs(1.0f - _p.n.Dot(n)) < float.Epsilon)
{
return(false);
}
// Let's have fun!
float3 I = new float3();
_ray.Pos.Set(0, 0, 0);
_ray.Aim = n;
if (!_p.Intersect(_ray, ref I))
{
return(false);
}
_ray.Aim = _p.n;
if (!_p.Intersect(_ray, ref I))
{
return(false);
}
_ray.Pos = I;
_ray.Aim = I - _ray.Pos;
if (!Intersect(_ray, ref I))
{
return(false);
}
_ray.Pos = I;
// We have at least one point belonging to both planes!
_ray.Aim = n.Cross(_p.n).Normalized;
return(true);
}
// Intersection between 2 planes
public bool Intersect( Plane _p, Ray _ray )
{
// Check if both planes are coplanar
if ( (float) System.Math.Abs( 1.0f - _p.n.Dot(n) ) < float.Epsilon )
return false;
// Let's have fun!
float3 I = new float3();
_ray.Pos.Set( 0, 0, 0 );
_ray.Aim = n;
if ( !_p.Intersect( _ray, ref I ) )
return false;
_ray.Aim = _p.n;
if ( !_p.Intersect( _ray, ref I ) )
return false;
_ray.Pos = I;
_ray.Aim = I - _ray.Pos;
if ( !Intersect( _ray, ref I ) )
return false;
_ray.Pos = I;
// We have at least one point belonging to both planes!
_ray.Aim = n.Cross(_p.n).Normalized;
return true;
}
// Intersection between 3 planes
public bool Intersect( Plane _p0, Plane _p1, ref float3 _intersection )
{
// Compute the intersection of 2 planes first, yielding a ray
Ray Hit = new Ray();
if ( !_p0.Intersect( _p1, Hit ) )
return false;
// Then compute the intersection of this ray with our plane
return Intersect( Hit, ref _intersection );
}