private void FindIntersects(List <Vector2> segments, List <float> intersectX, float lineY)
{
for (int i = 0; i < segments.Count - 1; ++i)
{
Vector2 s0 = segments[i];
Vector2 s1 = segments[i + 1];
Vector2 inter;
if (PGeometryUtilities.IsIntersectHorizontalLine(
s0.x, s0.y,
s1.x, s1.y,
lineY,
out inter))
{
intersectX.Add(inter.x);
}
}
}
private void VisualizeIntersections()
{
if (water.AreaMeshAnchors.Count < 3)
{
return;
}
Plane plane = new Plane(Vector3.up, water.transform.position);
Ray r = HandleUtility.GUIPointToWorldRay(Event.current.mousePosition);
float distance = -1;
if (plane.Raycast(r, out distance))
{
Vector3 hitWorldPos = r.origin + r.direction * distance;
float lineY = hitWorldPos.z;
Handles.color = Color.red;
Handles.DrawLine(new Vector3(-100, 0, lineY), new Vector3(100, 0, lineY));
List <Vector3> intersections = new List <Vector3>();
List <Vector3> anchors = new List <Vector3>(water.AreaMeshAnchors);
anchors.Add(water.AreaMeshAnchors[0]);
for (int i = 0; i < anchors.Count - 1; ++i)
{
Vector3 a0 = anchors[i];
Vector3 a1 = anchors[i + 1];
Vector2 inter;
if (PGeometryUtilities.IsIntersectHorizontalLine(a0.x, a0.z, a1.x, a1.z, lineY, out inter))
{
intersections.Add(new Vector3(inter.x, 0, inter.y));
}
}
for (int i = 0; i < intersections.Count; ++i)
{
Handles.color = Color.red;
Handles.CubeHandleCap(0, intersections[i], Quaternion.identity, 1, EventType.Repaint);
}
}
}