| public LineIntersect ( LineSegment2D, l2, Vector2D, &res ) : bool | ||
| l2 | LineSegment2D, | |
| res | Vector2D, | |
| return | bool | |
public List <HitInfo> IntersectTriangle(Triangle triangle)
{
List <HitInfo> res = new List <HitInfo>();
for (int i = 0; i < vertices.Count; i++)
{
LineSegment2D l1 = new LineSegment2D(V2(vertices[i]), V2(vertices[(i + 1) % vertices.Count]));
for (int j = 0; j < 3; j++)
{
LineSegment2D l2 = new LineSegment2D(V2(triangle.Vertex(j)), V2(triangle.Vertex((j + 1) % 3)));
Vector2D point;
if (l1.LineIntersect(l2, out point))
{
double distance = (point - V2(vertices[i])).magnitude;
double segmentLength = l1.Length();
//if (l1.DoLinesIntersect(l2)){
double normalizedDistance = distance / segmentLength;
Vector3D point3D = Vector3D.Lerp(new Vector3D(vertices[i]), new Vector3D(vertices[(i + 1) % vertices.Count]), normalizedDistance);
res.Add(new HitInfo(i, j, point3D.ToVector3()));
}
/*Vector2 intersectionPoint;
* if (LineLineIntersection(from,to, tFrom, tTo,out intersectionPoint)){
* float normalizedDistance = Vector3.Dot(to-from, tTo-tFrom);
* Vector3 point3D = Vector3.Lerp (vertices[i], vertices[(i+1)%vertices.Count], normalizedDistance);
* res.Add(new HitInfo(i,j,point3D));
* }*/
}
}
return(res);
}
public bool IsIntersecting(LineSegment2D ls)
{
foreach (var l in GetLineSegments())
{
Vector2D p = new Vector2D();
if (ls.LineIntersect(l, out p))
{
return(true);
}
}
return(false);
}
public bool IsIntersecting(LineSegment2D ls, out Vector2D p)
{
foreach (var l in GetLineSegments())
{
if (ls.LineIntersect(l, out p))
{
return(true);
}
}
p = Vector2D.zero;
return(false);
}
public bool IsIntersecting(LineSegment2D ls)
{
foreach (var l in GetLineSegments()){
Vector2D p = new Vector2D ();
if (ls.LineIntersect(l, out p)) {
return true;
}
}
return false;
}
public List<HitInfo> IntersectTriangle(Triangle triangle)
{
List<HitInfo> res = new List<HitInfo>();
for (int i=0;i<vertices.Count;i++){
LineSegment2D l1 = new LineSegment2D(V2(vertices[i]), V2(vertices[(i+1)%vertices.Count]));
for (int j=0;j<3;j++){
LineSegment2D l2 = new LineSegment2D(V2(triangle.Vertex(j)), V2(triangle.Vertex((j+1)%3)));
Vector2D point;
if (l1.LineIntersect(l2, out point)){
double distance = (point - V2(vertices[i])).magnitude;
double segmentLength = l1.Length();
//if (l1.DoLinesIntersect(l2)){
double normalizedDistance = distance/segmentLength;
Vector3D point3D = Vector3D.Lerp (new Vector3D (vertices[i]), new Vector3D (vertices[(i+1)%vertices.Count]), normalizedDistance);
res.Add(new HitInfo(i,j,point3D.ToVector3()));
}
/*Vector2 intersectionPoint;
if (LineLineIntersection(from,to, tFrom, tTo,out intersectionPoint)){
float normalizedDistance = Vector3.Dot(to-from, tTo-tFrom);
Vector3 point3D = Vector3.Lerp (vertices[i], vertices[(i+1)%vertices.Count], normalizedDistance);
res.Add(new HitInfo(i,j,point3D));
}*/
}
}
return res;
}
public bool IsIntersecting(LineSegment2D ls, out Vector2D p)
{
foreach (var l in GetLineSegments()){
if (ls.LineIntersect(l, out p)) {
return true;
}
}
p = Vector2D.zero;
return false;
}