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using UnityEngine;
using UnityEditor;
using System.Collections;
[CustomEditor(typeof(BezierPoint))]
[CanEditMultipleObjects]
public class BezierPointEditor : Editor {
BezierPoint point;
SerializedProperty handleTypeProp;
SerializedProperty handle1Prop;
SerializedProperty handle2Prop;
private delegate void HandleFunction(BezierPoint p);
private HandleFunction[] handlers = new HandleFunction[] { HandleConnected, HandleBroken, HandleAbsent };
void OnEnable(){
point = (BezierPoint)target;
handleTypeProp = serializedObject.FindProperty("handleStyle");
handle1Prop = serializedObject.FindProperty("_handle1");
handle2Prop = serializedObject.FindProperty("_handle2");
}
public override void OnInspectorGUI (){
serializedObject.Update();
BezierPoint.HandleStyle newHandleType = (BezierPoint.HandleStyle)EditorGUILayout.EnumPopup("Handle Type", (BezierPoint.HandleStyle)handleTypeProp.intValue);
if(newHandleType != (BezierPoint.HandleStyle)handleTypeProp.intValue)
{
handleTypeProp.intValue = (int)newHandleType;
if((int)newHandleType == 0)
{
if(handle1Prop.vector3Value != Vector3.zero) handle2Prop.vector3Value = -handle1Prop.vector3Value;
else if(handle2Prop.vector3Value != Vector3.zero) handle1Prop.vector3Value = -handle2Prop.vector3Value;
else
{
handle1Prop.vector3Value = new Vector3(0.1f, 0, 0);
handle2Prop.vector3Value = new Vector3(-0.1f, 0, 0);
}
}
else if((int)newHandleType == 1)
{
if(handle1Prop.vector3Value == Vector3.zero && handle2Prop.vector3Value == Vector3.zero)
{
handle1Prop.vector3Value = new Vector3(0.1f, 0, 0);
handle2Prop.vector3Value = new Vector3(-0.1f, 0, 0);
}
}
else if((int)newHandleType == 2)
{
handle1Prop.vector3Value = Vector3.zero;
handle2Prop.vector3Value = Vector3.zero;
}
}
if(handleTypeProp.intValue != 2)
{
Vector3 newHandle1 = EditorGUILayout.Vector3Field("Handle 1", handle1Prop.vector3Value);
Vector3 newHandle2 = EditorGUILayout.Vector3Field("Handle 2", handle2Prop.vector3Value);
if(handleTypeProp.intValue == 0){
if(newHandle1 != handle1Prop.vector3Value){
handle1Prop.vector3Value = newHandle1;
handle2Prop.vector3Value = -newHandle1;
}
else if(newHandle2 != handle2Prop.vector3Value){
handle1Prop.vector3Value = -newHandle2;
handle2Prop.vector3Value = newHandle2;
}
}
else{
handle1Prop.vector3Value = newHandle1;
handle2Prop.vector3Value = newHandle2;
}
}
if(GUI.changed){
serializedObject.ApplyModifiedProperties();
EditorUtility.SetDirty(target);
}
}
void OnSceneGUI()
{
Handles.color = Color.green;
Vector3 newPosition = Handles.FreeMoveHandle(point.position, point.transform.rotation, HandleUtility.GetHandleSize(point.position)*0.2f, Vector3.zero, Handles.CubeCap);
if(point.position != newPosition) point.position = newPosition;
handlers[(int)point.handleStyle](point);
Handles.color = Color.yellow;
Handles.DrawLine(point.position, point.globalHandle1);
Handles.DrawLine(point.position, point.globalHandle2);
BezierCurveEditor.DrawOtherPoints(point.curve, point);
}
private static void HandleConnected(BezierPoint p){
Handles.color = Color.cyan;
Vector3 newGlobal1 = Handles.FreeMoveHandle(p.globalHandle1, p.transform.rotation, HandleUtility.GetHandleSize(p.globalHandle1)*0.15f, Vector3.zero, Handles.SphereCap);
if(newGlobal1 != p.globalHandle1){
Undo.RegisterUndo(p, "Move Handle");
p.globalHandle1 = newGlobal1;
p.globalHandle2 = -(newGlobal1 - p.position) + p.position;
}
Vector3 newGlobal2 = Handles.FreeMoveHandle(p.globalHandle2, p.transform.rotation, HandleUtility.GetHandleSize(p.globalHandle2)*0.15f, Vector3.zero, Handles.SphereCap);
if(newGlobal2 != p.globalHandle2){
Undo.RegisterUndo(p, "Move Handle");
p.globalHandle1 = -(newGlobal2 - p.position) + p.position;
p.globalHandle2 = newGlobal2;
}
}
private static void HandleBroken(BezierPoint p){
Handles.color = Color.cyan;
Vector3 newGlobal1 = Handles.FreeMoveHandle(p.globalHandle1, Quaternion.identity, HandleUtility.GetHandleSize(p.globalHandle1)*0.15f, Vector3.zero, Handles.SphereCap);
Vector3 newGlobal2 = Handles.FreeMoveHandle(p.globalHandle2, Quaternion.identity, HandleUtility.GetHandleSize(p.globalHandle2)*0.15f, Vector3.zero, Handles.SphereCap);
if(newGlobal1 != p.globalHandle1)
{
Undo.RegisterUndo(p, "Move Handle");
p.globalHandle1 = newGlobal1;
}
if(newGlobal2 != p.globalHandle2)
{
Undo.RegisterUndo(p, "Move Handle");
p.globalHandle2 = newGlobal2;
}
}
private static void HandleAbsent(BezierPoint p)
{
p.handle1 = Vector3.zero;
p.handle2 = Vector3.zero;
}
}
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