public static bool Is2DPointOnThickBorder(Vector2 point, List <Vector2> polyPoints, List <Vector2> thickBorderPoints, bool isClosed, PolygonEpsilon epsilon = new PolygonEpsilon())
{
if (polyPoints.Count != thickBorderPoints.Count)
{
return(false);
}
if (polyPoints.Count < (isClosed ? 4 : 3))
{
return(false);
}
List <Vector2> quadPoints = new List <Vector2>(4);
var eps = new PolygonEpsilon();
eps.AreaEps = epsilon.ThickWireEps;
for (int ptIndex = 0; ptIndex < polyPoints.Count - 1; ++ptIndex)
{
quadPoints.Clear();
quadPoints.Add(polyPoints[ptIndex]);
quadPoints.Add(thickBorderPoints[ptIndex]);
quadPoints.Add(thickBorderPoints[ptIndex + 1]);
quadPoints.Add(polyPoints[ptIndex + 1]);
quadPoints.Add(polyPoints[ptIndex]);
if (Contains2DPoint(point, quadPoints, true, eps))
{
return(true);
}
}
return(false);
}
public static bool Contains2DPoint(Vector2 point, List <Vector2> polyPoints, bool isClosed, PolygonEpsilon epsilon = new PolygonEpsilon())
{
if (isClosed)
{
for (int ptIndex = 0; ptIndex < polyPoints.Count - 1; ++ptIndex)
{
Vector2 segmentDir = polyPoints[ptIndex + 1] - polyPoints[ptIndex];
Vector2 egdeNormal = segmentDir.GetNormal();
float distanceToPlane = Vector2.Dot((point - polyPoints[ptIndex]), egdeNormal);
if (distanceToPlane > epsilon.AreaEps)
{
return(false);
}
}
}
else
{
for (int ptIndex = 0; ptIndex < polyPoints.Count; ++ptIndex)
{
Vector2 segmentDir = polyPoints[(ptIndex + 1) % polyPoints.Count] - polyPoints[ptIndex];
Vector2 egdeNormal = segmentDir.GetNormal();
float distanceToPlane = Vector2.Dot((point - polyPoints[ptIndex]), egdeNormal);
if (distanceToPlane > epsilon.AreaEps)
{
return(false);
}
}
}
return(true);
}
public static bool Raycast(Ray ray, out float t, List <Vector3> cwPolyPoints, bool isClosed, Vector3 polyNormal, PolygonEpsilon epsilon = new PolygonEpsilon())
{
t = 0.0f;
if (cwPolyPoints.Count < (isClosed ? 4 : 3))
{
return(false);
}
float rayEnter;
Plane polyPlane = new Plane(polyNormal, cwPolyPoints[0]);
if (polyPlane.Raycast(ray, out rayEnter) &&
Contains3DPoint(ray.GetPoint(rayEnter), false, cwPolyPoints, isClosed, polyNormal, epsilon))
{
t = rayEnter;
return(true);
}
return(false);
}
public static bool Contains3DPoint(Vector3 point, bool checkOnPlane, List <Vector3> cwPolyPoints, bool isClosed, Vector3 polyNormal, PolygonEpsilon epsilon = new PolygonEpsilon())
{
if (cwPolyPoints.Count < (isClosed ? 4 : 3))
{
return(false);
}
Plane polyPlane = new Plane(polyNormal, cwPolyPoints[0]);
if (checkOnPlane && Mathf.Abs(polyPlane.GetDistanceToPoint(point)) > epsilon.ExtrudeEps)
{
return(false);
}
if (isClosed)
{
for (int ptIndex = 0; ptIndex < cwPolyPoints.Count - 1; ++ptIndex)
{
Vector3 segmentDir = cwPolyPoints[ptIndex + 1] - cwPolyPoints[ptIndex];
Vector3 egdeNormal = Vector3.Cross(segmentDir, polyNormal).normalized;
float distanceToPlane = Vector3.Dot((point - cwPolyPoints[ptIndex]), egdeNormal);
if (distanceToPlane > epsilon.AreaEps)
{
return(false);
}
}
}
else
{
for (int ptIndex = 0; ptIndex < cwPolyPoints.Count; ++ptIndex)
{
Vector3 segmentDir = cwPolyPoints[(ptIndex + 1) % cwPolyPoints.Count] - cwPolyPoints[ptIndex];
Vector3 egdeNormal = Vector3.Cross(segmentDir, polyNormal).normalized;
float distanceToPlane = Vector3.Dot((point - cwPolyPoints[ptIndex]), egdeNormal);
if (distanceToPlane > epsilon.AreaEps)
{
return(false);
}
}
}
return(true);
}
public static bool Is2DPointOnBorder(Vector2 point, List <Vector2> polyPoints, bool isClosed, PolygonEpsilon epsilon = new PolygonEpsilon())
{
if (polyPoints.Count < (isClosed ? 4 : 3))
{
return(false);
}
if (isClosed)
{
for (int ptIndex = 0; ptIndex < polyPoints.Count - 1; ++ptIndex)
{
if (point.GetDistanceToSegment(polyPoints[ptIndex], polyPoints[ptIndex + 1]) <= epsilon.WireEps)
{
return(true);
}
}
}
else
{
for (int ptIndex = 0; ptIndex < polyPoints.Count; ++ptIndex)
{
if (point.GetDistanceToSegment(polyPoints[ptIndex], polyPoints[(ptIndex + 1) % polyPoints.Count]) <= epsilon.WireEps)
{
return(true);
}
}
}
return(false);
}
public static bool Is3DPointOnBorder(Vector3 point, bool checkOnPlane, List <Vector3> cwPolyPoints, bool isClosed, Vector3 polyNormal, PolygonEpsilon epsilon = new PolygonEpsilon())
{
if (cwPolyPoints.Count < (isClosed ? 4 : 3))
{
return(false);
}
Plane polyPlane = new Plane(polyNormal, cwPolyPoints[0]);
if (checkOnPlane && Mathf.Abs(polyPlane.GetDistanceToPoint(point)) > epsilon.ExtrudeEps)
{
return(false);
}
if (!checkOnPlane)
{
point = polyPlane.ProjectPoint(point);
}
if (isClosed)
{
for (int ptIndex = 0; ptIndex < cwPolyPoints.Count - 1; ++ptIndex)
{
if (point.GetDistanceToSegment(cwPolyPoints[ptIndex], cwPolyPoints[ptIndex + 1]) <= epsilon.WireEps)
{
return(true);
}
}
}
else
{
for (int ptIndex = 0; ptIndex < cwPolyPoints.Count; ++ptIndex)
{
if (point.GetDistanceToSegment(cwPolyPoints[ptIndex], cwPolyPoints[(ptIndex + 1) % cwPolyPoints.Count]) <= epsilon.WireEps)
{
return(true);
}
}
}
return(false);
}
