private void drawPoints(ref Vector2Array points, bool isCap = true)
{
int count = points.Count;
for (int i = 0; i < count; i++)
{
Handles.Label(points[i], string.Format("{0}", i));
if (!isCap)
{
if (i >= count - 1)
{
break;
}
}
var p1 = points[i];
var p2 = points[(i + 1 < count)?i + 1:0];
if (i == _nearestID)
{
Handles.color = new Color(0, 1, 0);
}
else
{
Handles.color = new Color(0.5f, 1, 0.5f);
}
Handles.DrawLine(p1, p2);
}
}
public override void OnInspectorGUI()
{
base.OnInspectorGUI();
SlopeGen script = (SlopeGen)target;
if (GUILayout.Button("Save points"))
{
Vector2Array points = new Vector2Array()
{
array = script.points
};
StreamWriter writer = new StreamWriter(getFileSavePath, false);
writer.Write(JsonUtility.ToJson(points));
writer.Close();
Debug.Log("Saved new points");
}
if (GUILayout.Button("Load points"))
{
StreamReader reader = new StreamReader(getFileSavePath);
script.points = JsonUtility.FromJson <Vector2Array>(reader.ReadToEnd()).array;
reader.Close();
Debug.Log("Loaded new points");
}
}
private void drawPoints(ref Vector2Array points, bool isCap = true)
{
var gameObjPos = _asTarget.gameObject.transform.position;
int count = points.Count;
for (int i = 0; i < count; i++)
{
var p1 = points[i];
p1 = new Vector2(p1.x + gameObjPos.x, p1.y + gameObjPos.y);
var p2 = points[(i + 1 < count)?i + 1:0];
p2 = new Vector2(p2.x + gameObjPos.x, p2.y + gameObjPos.y);
Handles.Label(p1, string.Format("{0}", i));
if (!isCap)
{
if (i >= count - 1)
{
break;
}
}
if (i == _nearestID)
{
Handles.color = new Color(0, 1, 0);
}
else
{
Handles.color = new Color(0.5f, 1, 0.5f);
}
Handles.DrawLine(p1, p2);
}
}
private void deletePointWithIndex(ref Vector2Array points, int index)
{
if (points.Count < 3)
{
return;
}
Undo.RecordObject(_asTarget, "delete point");
points.RemoveAt(index);
}
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);
}
public void TestLinqAccess()
{
var buffer = new Byte[] { 1, 52, 43, 6, 23, 234 };
var accessor = new Vector2Array(buffer, 0, Schema2.EncodingType.BYTE, true);
var result = accessor.ToArray();
Assert.AreEqual(3, result.Length);
}
private void onAdd(ReorderableList list)
{
int listID = list.count;
var gameObjPos = _asTarget.gameObject.transform.position;
Vector2Array vector2s = new Vector2Array();
vector2s.Add(new Vector2(-1 + gameObjPos.x, -1 + gameObjPos.y));
vector2s.Add(new Vector2(1 + gameObjPos.x, 1 + gameObjPos.y));
vector2s.listID = listID; //记录Drawer中使用的id
_asTarget.paths.Add(vector2s);
list.index = list.count; //焦点移到最后一项
}
public static (Vector2, Vector2) GetBounds(Vector2Array accesor)
{
var min = new Vector2(Single.MaxValue);
var max = new Vector2(Single.MinValue);
int c = accesor.Count;
for (int i = 0; i < c; ++i)
{
var v = accesor[i];
min = Vector2.Min(min, v);
max = Vector2.Max(max, v);
}
return(min, max);
}
private int getNearestPointId(Vector2Array points, Vector2 check)
{
int id = -1;
float minDistance = float.MaxValue;
for (int i = 0; i < points.Count; i++)
{
float d = Vector2.Distance(points[i], check);
if (d < minDistance)
{
minDistance = d;
id = i;
}
}
return(id);
}
public static MeshPrimitive WithVertexAccessor(this MeshPrimitive primitive, string attribute, IReadOnlyList <Vector2> values)
{
var root = primitive.LogicalParent.LogicalParent;
// create a vertex buffer and fill it
var view = root.UseBufferView(new Byte[8 * values.Count], 0, null, 0, BufferMode.ARRAY_BUFFER);
var array = new Vector2Array(view.Content);
array.FillFrom(0, values);
var accessor = root.CreateAccessor();
primitive.SetVertexAccessor(attribute, accessor);
accessor.SetVertexData(view, 0, values.Count, DimensionType.VEC2, EncodingType.FLOAT, false);
return(primitive);
}
private void editPointHandler(ref Vector2Array points)
{
//Handles.Label(_asTarget.point,string.Format("({0},{1})",_asTarget.point.x,_asTarget.point.y));
EditorGUI.BeginChangeCheck();
float size = HandleUtility.GetHandleSize(_asTarget.point) * 0.05f;
var snap = Vector2.one * 0.05f;
var newPoint = Handles.FreeMoveHandle(_asTarget.point, Quaternion.identity, size, snap, Handles.DotHandleCap);
if (EditorGUI.EndChangeCheck())
{
Undo.RecordObject(_asTarget, "edit point"); //记录更改，实现撤消回退
_asTarget.point = newPoint;
//Debug.Log(_editID);
if (_editID > -1)
{
points[_editID] = newPoint;
}
}
}
private void OnSceneGUI()
{
if (_asTarget.isActiveAndEnabled)
{
for (int i = 0; i < _asTarget.paths.Count; i++)
{
Vector2Array stroke = _asTarget.paths[i];
if (stroke.Count >= 2)
{
if (stroke.isEdit)
{
onSceneGUIEditPointsHandler(ref stroke);
}
else if (stroke.append)
{
onSceneGUIAppendPointsHandler(ref stroke);
}
}
}
}
}
private static void parseCharPoints(CharPoints charPoints, XmlElement parentElement, XmlDocument xml)
{
XmlElement charPointsElement = xml.CreateElement("CharPoints");
List <Vector2Array> paths = charPoints.paths;
for (int i = 0; i < paths.Count; i++)
{
Vector2Array stroke = paths[i];
XmlElement strokeElement = xml.CreateElement("Stroke");
for (int j = 0; j < stroke.Count; j++)
{
Vector2 v = stroke[j];
XmlElement vElement = xml.CreateElement("Vector2");
vElement.SetAttribute("x", v.x.ToString());
vElement.SetAttribute("y", v.y.ToString());
strokeElement.AppendChild(vElement);
}
charPointsElement.AppendChild(strokeElement);
}
parentElement.AppendChild(charPointsElement);
}
private void findSetNearestLineSegment(Vector2 refPoint, ref Vector2Array points, ref Vector2[] nearestLineSegment)
{
int count = points.Count;
float nearestLineDistance = 1e6f;
for (int i = 0; i < count; i++)
{
var p1 = points[i];
var p2 = points[(i + 1 < count)?i + 1:0];
var perp = getPerpendicularPt(refPoint.x, refPoint.y, p1.x, p1.y, p2.x, p2.y);
if (onSegment(perp.x, perp.y, p1.x, p1.y, p2.x, p2.y))
{
float distance = HandleUtility.DistancePointToLine(refPoint, p1, p2);
if (distance < nearestLineDistance)
{
nearestLineDistance = distance;
_nearestID = i;
nearestLineSegment[0] = p1;
nearestLineSegment[1] = p2;
}
}
}
}
public _MapVector2ToVector4(Vector2Array source)
{
_Accessor = source;
}
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);
}
