public static bool RaycastWire(Ray ray, out float t, Vector3 circleCenter, float circleRadius, Vector3 circleNormal, CircleEpsilon epsilon = new CircleEpsilon())
{
t = 0.0f;
Plane circlePlane = new Plane(circleNormal, circleCenter);
float rayEnter;
if (circlePlane.Raycast(ray, out rayEnter))
{
Vector3 intersectPt = ray.GetPoint(rayEnter);
float distFromOrigin = (circleCenter - intersectPt).magnitude;
if (distFromOrigin >= circleRadius - epsilon.WireEps &&
distFromOrigin <= circleRadius + epsilon.WireEps)
{
t = rayEnter;
return(true);
}
}
if (epsilon.ExtrudeEps != 0.0f)
{
float dot = Vector3Ex.AbsDot(ray.direction, circleNormal);
if (dot < ExtrudeEpsThreshold.Get)
{
Vector3 cylinderAxisPt0 = circleCenter - circleNormal * epsilon.ExtrudeEps;
Vector3 cylinderAxisPt1 = circleCenter + circleNormal * epsilon.ExtrudeEps;
return(CylinderMath.Raycast(ray, out t, cylinderAxisPt0, cylinderAxisPt1, circleRadius + epsilon.WireEps));
}
}
return(false);
}
public static bool Raycast(Ray ray, out float t, Vector3 circleCenter, float circleRadius, Vector3 circleNormal, CircleEpsilon epsilon = new CircleEpsilon())
{
t = 0.0f;
circleRadius += epsilon.RadiusEps;
Plane circlePlane = new Plane(circleNormal, circleCenter);
float rayEnter;
if (circlePlane.Raycast(ray, out rayEnter) && (ray.GetPoint(rayEnter) - circleCenter).magnitude <= circleRadius)
{
t = rayEnter;
return(true);
}
if (epsilon.ExtrudeEps != 0.0f)
{
float dot = Vector3Ex.AbsDot(ray.direction, circleNormal);
if (dot < ExtrudeEpsThreshold.Get)
{
Vector3 cylinderAxisPt0 = circleCenter - circleNormal * epsilon.ExtrudeEps;
Vector3 cylinderAxisPt1 = circleCenter + circleNormal * epsilon.ExtrudeEps;
return(CylinderMath.Raycast(ray, out t, cylinderAxisPt0, cylinderAxisPt1, circleRadius));
}
}
return(false);
}
public static bool Contains2DPoint(Vector2 point, Vector2 circleCenter, float circleRadius, CircleEpsilon epsilon = new CircleEpsilon())
{
circleRadius += epsilon.RadiusEps;
return((point - circleCenter).magnitude <= circleRadius);
}
public static bool Is2DPointOnBorder(Vector2 point, Vector2 circleCenter, float circleRadius, CircleEpsilon epsilon = new CircleEpsilon())
{
float distFromOrigin = (point - circleCenter).magnitude;
return(distFromOrigin >= circleRadius - epsilon.WireEps &&
distFromOrigin <= circleRadius + epsilon.WireEps);
}
public static bool Contains3DPoint(Vector3 point, bool checkOnPlane, Vector3 circleCenter, float circleRadius, Vector3 circleNormal, CircleEpsilon epsilon = new CircleEpsilon())
{
Plane circlePlane = new Plane(circleNormal, circleCenter);
if (checkOnPlane && circlePlane.GetAbsDistanceToPoint(point) > epsilon.ExtrudeEps)
{
return(false);
}
circleRadius += epsilon.RadiusEps;
point = circlePlane.ProjectPoint(point);
return((point - circleCenter).magnitude <= circleRadius);
}