private void UpdateTerrain(Vector3[] localPoints)
{
if (localPoints.Length < 3)
{
return;
}
List <Vector3> vertices = new List <Vector3>(localPoints);
Triangulator triangulator = new Triangulator(vertices.ToArray());
int[] indecies = triangulator.Triangulate();
Simple2DTerrain terrain = target as Simple2DTerrain;
MeshFilter meshFilter = terrain.GetComponent <MeshFilter>();
// Debug.Log(meshFilter.sharedMesh);
if (meshFilter.sharedMesh == null)
{
Mesh mesh = new Mesh();
mesh.triangles = null;
mesh.vertices = vertices.ToArray();
mesh.triangles = indecies;
mesh.uv = Vec3ToVec2Array(vertices.ToArray());
meshFilter.mesh = mesh;
}
else
{
Mesh mesh = meshFilter.sharedMesh;
mesh.triangles = null;
mesh.vertices = vertices.ToArray();
mesh.triangles = indecies;
mesh.uv = Vec3ToVec2Array(vertices.ToArray());
}
PolygonCollider2D collider = terrain.GetComponent <PolygonCollider2D>();
collider.points = Vec3ToVec2Array(vertices.ToArray());
}
void OnSceneGUI()
{
Simple2DTerrain polyline = (target as Simple2DTerrain);
Vector3[] localPoints = polyline.nodes.ToArray();
Vector3[] worldPoints = new Vector3[polyline.nodes.Count];
for (int i = 0; i < worldPoints.Length; i++)
{
worldPoints[i] = polyline.transform.TransformPoint(localPoints[i]);
}
DrawPolyLine(worldPoints);
DrawNodes(polyline, worldPoints);
if (Event.current.shift)
{
//Adding Points
Vector3 mousePos = HandleUtility.GUIPointToWorldRay(Event.current.mousePosition).origin;
Vector3 polyLocalMousePos = polyline.transform.InverseTransformPoint(mousePos);
Vector3 nodeOnPoly = HandleUtility.ClosestPointToPolyLine(worldPoints);
float handleSize = HandleUtility.GetHandleSize(nodeOnPoly);
int nodeIndex = FindNodeIndex(worldPoints, nodeOnPoly);
Handles.DrawLine(worldPoints[nodeIndex - 1], mousePos);
Handles.DrawLine(worldPoints[nodeIndex], mousePos);
if (Handles.Button(mousePos, Quaternion.identity, handleSize * 0.09f, handleSize, HandleFunc))
{
polyLocalMousePos.z = 0;
Undo.RecordObject(polyline, "Insert Node");
polyline.nodes.Insert(nodeIndex, polyLocalMousePos);
///////////////////////////////////////
UpdateTerrain(polyline.nodes.ToArray());
///////////////////////////////////////
Event.current.Use();
}
}
if (Event.current.control)
{
//Deleting Points
int indexToDelete = FindNearestNodeToMouse(worldPoints);
Handles.color = Color.red;
float handleSize = HandleUtility.GetHandleSize(worldPoints[0]);
if (Handles.Button(worldPoints[indexToDelete], Quaternion.identity, handleSize * 0.09f, handleSize, DeleteHandleFunc))
{
Undo.RecordObject(polyline, "Remove Node");
polyline.nodes.RemoveAt(indexToDelete);
///////////////////////////////////////
UpdateTerrain(polyline.nodes.ToArray());
///////////////////////////////////////
indexToDelete = -1;
Event.current.Use();
}
Handles.color = Color.white;
}
}
private void DrawNodes(Simple2DTerrain polyline, Vector3[] worldPoints)
{
for (int i = 0; i < polyline.nodes.Count; i++)
{
Vector3 pos = polyline.transform.TransformPoint(polyline.nodes[i]);
float handleSize = HandleUtility.GetHandleSize(pos);
Vector3 newPos = Handles.FreeMoveHandle(pos, Quaternion.identity, handleSize * 0.09f, Vector3.one, HandleFunc);
List <Vector3> alignTo;
//if (currentControlID == GUIUtility.hotControl)
//{
// if (CheckAlignment(worldPoints, handleSize * 0.1f, i, ref newPos, out alignTo))
// {
// Handles.color = Color.green;
// for (int j = 0; j < alignTo.Count; j++)
// Handles.DrawPolyLine(newPos, alignTo[j]);
// Handles.color = Color.white;
// }
//}
if (newPos != pos)
{
if (CheckAlignment(worldPoints, handleSize * 0.1f, i, ref newPos, out alignTo))
{
Handles.color = Color.green;
for (int j = 0; j < alignTo.Count; j++)
{
Handles.DrawPolyLine(newPos, alignTo[j]);
}
Handles.color = Color.white;
}
Undo.RecordObject(polyline, "Move Node");
polyline.nodes[i] = polyline.transform.InverseTransformPoint(newPos);
///////////////////////////////////////
UpdateTerrain(polyline.nodes.ToArray());
///////////////////////////////////////
}
}
}
private void DrawNodes(Simple2DTerrain polyline, Vector3[] worldPoints)
{
for (int i = 0; i < polyline.nodes.Count; i++)
{
Vector3 pos = polyline.transform.TransformPoint(polyline.nodes[i]);
float handleSize = HandleUtility.GetHandleSize(pos);
Vector3 newPos = Handles.FreeMoveHandle(pos, Quaternion.identity, handleSize * 0.09f, Vector3.one, HandleFunc);
List<Vector3> alignTo;
//if (currentControlID == GUIUtility.hotControl)
//{
// if (CheckAlignment(worldPoints, handleSize * 0.1f, i, ref newPos, out alignTo))
// {
// Handles.color = Color.green;
// for (int j = 0; j < alignTo.Count; j++)
// Handles.DrawPolyLine(newPos, alignTo[j]);
// Handles.color = Color.white;
// }
//}
if (newPos != pos)
{
if (CheckAlignment(worldPoints, handleSize * 0.1f, i, ref newPos, out alignTo))
{
Handles.color = Color.green;
for (int j = 0; j < alignTo.Count; j++)
Handles.DrawPolyLine(newPos, alignTo[j]);
Handles.color = Color.white;
}
Undo.RecordObject(polyline, "Move Node");
polyline.nodes[i] = polyline.transform.InverseTransformPoint(newPos);
///////////////////////////////////////
UpdateTerrain(polyline.nodes.ToArray());
///////////////////////////////////////
}
}
}
