public bool Raycast(Ray3D ray, out float t)
{
if (ray.IntersectsPlane(_plane, out t))
{
Vector3 intersectionPoint = ray.GetPoint(t);
return(ContainsPoint(intersectionPoint));
}
return(false);
}
public bool IntersectsTriangle(Triangle3D triangle, out Triangle3DIntersectInfo intersectInfo)
{
intersectInfo = new Triangle3DIntersectInfo();
if (triangle.Normal.IsAlignedWith(Normal))
{
return(false);
}
float t;
List <Segment3D> otherTriSegments = triangle.GetSegments();
var firstTriIntersectionPoints = new List <Vector3>();
foreach (var segment in otherTriSegments)
{
Ray3D ray = new Ray3D(segment.StartPoint, segment.EndPoint);
if (Raycast(ray, out t))
{
firstTriIntersectionPoints.Add(ray.GetPoint(t));
}
}
List <Segment3D> thisTriSegments = GetSegments();
var secondTriIntersectionPoints = new List <Vector3>();
foreach (var segment in thisTriSegments)
{
Ray3D ray = new Ray3D(segment.StartPoint, segment.EndPoint);
if (triangle.Raycast(ray, out t))
{
secondTriIntersectionPoints.Add(ray.GetPoint(t));
}
}
if (firstTriIntersectionPoints.Count != 0 || secondTriIntersectionPoints.Count != 0)
{
intersectInfo = new Triangle3DIntersectInfo(this, triangle, firstTriIntersectionPoints, secondTriIntersectionPoints);
return(true);
}
return(false);
}