bool Plane::Intersects(const Ray &ray, float *d) const
{
float t;
bool success = IntersectLinePlane(PointOnPlane(), normal, ray.pos, ray.dir, &t);
if (d)
*d = t;
return success && t >= 0.f;
}
bool Plane::Intersects(const LineSegment &lineSegment, float *d) const
{
float t;
bool success = IntersectLinePlane(PointOnPlane(), normal, lineSegment.a, lineSegment.Dir(), &t);
const float lineSegmentLength = lineSegment.Length();
if (d)
*d = t / lineSegmentLength;
return success && t >= 0.f && t <= lineSegmentLength;
}
bool Plane::Intersects(const Line &line, float *d) const
{
return IntersectLinePlane(PointOnPlane(), normal, line.pos, line.dir, d);
}
vec Plane::Point(float u, float v) const
{
vec b1, b2;
normal.PerpendicularBasis(b1, b2);
return PointOnPlane() + u * b1 + v * b2;
}
vec Plane::Point(float u, float v) const
{
return PointOnPlane() + u * normal.Perpendicular() + v * normal.AnotherPerpendicular();
}