private void onSceneGUIAppendPointsHandler(ref Vector2Array points)
{
HandleUtility.Repaint();
var gameObjPos = _asTarget.gameObject.transform.position;
//鼠标位置
var mousePos = Event.current.mousePosition;
mousePos = HandleUtility.GUIPointToWorldRay(mousePos).origin;
if (Event.current.isMouse)
{
EventType eventType = Event.current.type;
if (Event.current.button == 0)
{
if (eventType == EventType.MouseDown)
{
_isMousePress = true;
if (_editID == -1)
{
var mouseGUI = HandleUtility.WorldToGUIPoint(mousePos);
//Debug.Log("Insert");
Undo.RecordObject(_asTarget, "add point");
points.Insert(points.Count, new Vector2(mousePos.x - gameObjPos.x, mousePos.y - gameObjPos.y));
_editID = points.Count - 1;
}
}
else if (eventType == EventType.MouseUp)
{
_isMousePress = false;
_editID = -1;
}
if (!_isMousePress) //鼠标没有按下时
{
var cpt = new Vector2(mousePos.x, mousePos.y);
int nearestId = getNearestPointId(points, new Vector2(cpt.x - gameObjPos.x, cpt.y - gameObjPos.y));
Vector2 nearestWorldPt = new Vector2(points[nearestId].x + gameObjPos.x, points[nearestId].y + gameObjPos.y);
float d = Vector2.Distance(HandleUtility.WorldToGUIPoint(cpt), HandleUtility.WorldToGUIPoint(nearestWorldPt));
if (nearestId > -1 && d <= SnapDistance)
{
cpt.Set(nearestWorldPt.x, nearestWorldPt.y);
//Debug.Log("_editID:"+_editID);
_editID = nearestId;
}
else
{
_editID = -1;
}
_asTarget.point.Set(cpt.x, cpt.y);
}
}
}
editPointHandler(ref points);
//画点列表
drawPoints(ref points, false);
}
private void onSceneGUIEditPointsHandler(ref Vector2Array points)
{
HandleUtility.Repaint();
//鼠标位置
var mousePos = Event.current.mousePosition;
mousePos = HandleUtility.GUIPointToWorldRay(mousePos).origin;
//寻找最近线段
Vector2[] nearestLineSegment = new Vector2[2];
findSetNearestLineSegment(mousePos, ref points, ref nearestLineSegment);
if (Event.current.isMouse)
{
EventType eventType = Event.current.type;
if (Event.current.button == 0)
{
if (eventType == EventType.MouseDown)
{
_isMousePress = true;
var mouseGUI = HandleUtility.WorldToGUIPoint(mousePos);
var nearestGUI0 = HandleUtility.WorldToGUIPoint(nearestLineSegment[0]);
var nearestGUI1 = HandleUtility.WorldToGUIPoint(nearestLineSegment[1]);
//float mouseToNearestLineSegment=HandleUtility.DistancePointToLineSegment(mouseGUI,nearestGUI0,nearestGUI1);
float d0 = Vector2.Distance(mouseGUI, nearestGUI0);
float d1 = Vector2.Distance(mouseGUI, nearestGUI1);
if (_editID == -1)
{
if (d0 <= SnapDistance)
{
//Debug.Log("d0<=SnapDistance");
if (Event.current.control)
{
deletePointWithIndex(ref points, _nearestID);
}
else
{
_editID = _nearestID;
}
}
else if (d1 <= SnapDistance)
{
//Debug.Log("d1<=SnapDistance");
int lineEndId = _nearestID + 1 <= points.Count - 1?_nearestID + 1:0;
if (Event.current.control)
{
deletePointWithIndex(ref points, lineEndId);
}
else
{
_editID = lineEndId;
}
}
else
{
//Debug.Log("Insert id:"+(_nearestID+1));
Undo.RecordObject(_asTarget, "add point");
points.Insert(_nearestID + 1, new Vector2(mousePos.x, mousePos.y));
_editID = _nearestID + 1;
findSetNearestLineSegment(mousePos, ref points, ref nearestLineSegment);
}
}
}
else if (eventType == EventType.MouseUp)
{
_isMousePress = false;
_editID = -1;
}
if (!_isMousePress) //鼠标没有按下时
//设置控制柄到最近线段的垂线
{
var perp = getPerpendicularPt(mousePos.x, mousePos.y, nearestLineSegment[0].x, nearestLineSegment[0].y, nearestLineSegment[1].x, nearestLineSegment[1].y);
var perpGUI = HandleUtility.WorldToGUIPoint(perp);
var nearestGUI0 = HandleUtility.WorldToGUIPoint(nearestLineSegment[0]);
var nearestGUI1 = HandleUtility.WorldToGUIPoint(nearestLineSegment[1]);
float perpToNearestLineSegment = HandleUtility.DistancePointToLineSegment(perpGUI, nearestGUI0, nearestGUI1);
float d0 = Vector2.Distance(perpGUI, nearestGUI0);
float d1 = Vector2.Distance(perpGUI, nearestGUI1);
var cpt = new Vector2(mousePos.x, mousePos.y);
//垂足不能滑出线段
/*if(perpToNearestLineSegment>0.01f){
* if(d0<d1)perp.Set(nearestLineSegment[0].x,nearestLineSegment[0].y);
* else perp.Set(nearestLineSegment[1].x,nearestLineSegment[1].y);
* }*/
//操作点贴紧端点
int nearestId = getNearestPointId(points, cpt);
float d = Vector2.Distance(HandleUtility.WorldToGUIPoint(cpt), HandleUtility.WorldToGUIPoint(points[nearestId]));
if (nearestId > -1 && d <= SnapDistance)
{
cpt.Set(points[nearestId].x, points[nearestId].y);
//Debug.Log("_editID:"+_editID);
_editID = nearestId;
}
else
{
_editID = -1;
}
_asTarget.point.Set(cpt.x, cpt.y);
}
}
}
editPointHandler(ref points);
//画点列表
drawPoints(ref points, false);
}