private void OnDrawGizmos()
{
RefreshMesh();
if (GetComponent <ShapeRender>())
{
return;
}
Vector3 pos = transform.position;
pos.y = 0;
Color color = Gizmos.color;
switch (Type)
{
case PolyType.Area:
Gizmos.color = new Color(0, 1, 0, 0.5f);
break;
case PolyType.Hollow:
pos.y = 0.01f;
Gizmos.color = new Color(1f, 0.921568632f, 0.0156862754f, 0.5f);
break;
case PolyType.Obstacle:
Gizmos.color = new Color(1, 0, 0, 0.5f);
pos.y = 0.02f;
break;
}
Gizmos.DrawMesh(ShowMesh, pos, PlaneUtils.TransRotation(transform.rotation));
Gizmos.color = color;
}
private void OnSceneGUI()
{
bool enableEditor = targets.Length == 1;
var shape = target as BoxShape;
shape.Offset.y = 0;
Vector3 pos = shape.transform.position;
pos.y = 0;
Quaternion rotation = PlaneUtils.TransRotation(shape.transform.rotation);
Matrix4x4 matrix = Matrix4x4.TRS(pos, rotation, Vector3.one);
using (new Handles.DrawingScope(Color.green, matrix))
{
Handles.DrawWireCube(shape.Offset, new Vector3(shape.Size.x, 0, shape.Size.y));
if (enableEditor)
{
for (int i = 0; i < 4; ++i)
{
Vector3 normal = ControlPoints[i];
bool isX = (i % 2 == 0);
float size = shape.Size.y;
if (isX)
{
size = shape.Size.x;
}
size *= 0.5f;
Vector3 pt = normal * size + shape.Offset;
EditorGUI.BeginChangeCheck();
float handleSize = HandleUtility.GetHandleSize(pt) * 0.05f;
pt = Handles.FreeMoveHandle(pt, rotation, handleSize, normal, Handles.DotHandleCap);
if (EditorGUI.EndChangeCheck())
{
Undo.RecordObject(shape, "modify box");
EditorUtility.SetDirty(shape);
Vector3 otherSide = normal * (-1 * size) + shape.Offset;
float newSize = Vector3.Distance(pt, otherSide) * 0.5f;
shape.Offset += normal * (newSize - size);
if (isX)
{
shape.Size.x = newSize * 2;
}
else
{
shape.Size.y = newSize * 2;
}
shape.SetDirty();
}
}
}
}
}
private void OnSceneGUI()
{
bool enableEditor = targets.Length == 1;
var shape = target as PolyShape;
if (worldPoints == null || worldPoints.Length != shape.Points.Count)
{
worldPoints = new Vector3[shape.Points.Count];
}
Vector3 pos = shape.transform.position;
pos.y = 0;
Quaternion rotation = PlaneUtils.TransRotation(shape.transform.rotation);
Matrix4x4 matrix = Matrix4x4.TRS(pos, rotation, Vector3.one);
for (int i = 0; i < shape.Points.Count; ++i)
{
worldPoints[i] = matrix.MultiplyPoint(shape.Points[i]);
}
//计算鼠标点击在XZ平面的点
Ray ray = HandleUtility.GUIPointToWorldRay(Event.current.mousePosition);
if (!PlaneUtils.RayCastPlaneXZ(ray, out Vector3 mousePos))
{
return;//鼠标没有点击在XZ平面
}
var result = PlaneUtils.ClosestPointToPolyLine(mousePos, worldPoints);
Vector3 closePoint = result.Point;
int index = result.Index;
using (new Handles.DrawingScope(Color.green))
{
//画边缘线
for (int i = 0; i < worldPoints.Length; ++i)
{
int nextIndex = i + 1;
if (nextIndex == shape.Points.Count)
{
nextIndex = 0;
}
Vector3 pt = worldPoints[i];
Handles.DrawLine(pt, worldPoints[nextIndex]);
if (enableEditor)
{
//点位置编辑
float handleSize = HandleUtility.GetHandleSize(pt) * 0.05f;
EditorGUI.BeginChangeCheck();
pt = Handles.FreeMoveHandle(pt, Quaternion.identity, handleSize, new Vector3(1, 0, 1), Handles.DotHandleCap);
if (EditorGUI.EndChangeCheck())
{
Undo.RecordObject(shape, "move polygon point");
EditorUtility.SetDirty(shape);
pt = matrix.inverse.MultiplyPoint(pt);
pt.y = 0;
worldPoints[i] = pt;
shape.Points[i] = pt;
shape.SetDirty();
}
}
}
if (!enableEditor)
{
return;
}
if (Event.current.control)
{//移除点
if (worldPoints.Length > 3)
{
int removeIndex = index + 1;
if (removeIndex == worldPoints.Length)
{
removeIndex = 0;
}
int preIndex = removeIndex - 1;
if (preIndex < 0)
{
preIndex = worldPoints.Length - 1;
}
int nextIndex = removeIndex + 1;
if (nextIndex == worldPoints.Length)
{
nextIndex = 0;
}
Handles.DrawLine(worldPoints[preIndex], worldPoints[nextIndex]);
using (new Handles.DrawingScope(Color.red))
{
Handles.DrawAAPolyLine(5, worldPoints[preIndex], worldPoints[removeIndex]);
Handles.DrawAAPolyLine(5, worldPoints[nextIndex], worldPoints[removeIndex]);
float handleSize = HandleUtility.GetHandleSize(worldPoints[removeIndex]) * 0.05f;
var pt1 = HandleUtility.WorldToGUIPoint(worldPoints[removeIndex]);
var pt2 = HandleUtility.WorldToGUIPoint(mousePos);
float pickSize = Vector2.Distance(pt1, pt2) + 0.1f;
if (Handles.Button(worldPoints[removeIndex], Quaternion.identity, handleSize, pickSize, Handles.DotHandleCap))
{
Undo.RecordObject(shape, "delete polygon point");
EditorUtility.SetDirty(shape);
shape.Points.RemoveAt(removeIndex);
shape.SetDirty();
Event.current.Use();
}
}
}
}
else if (Event.current.shift && (result.SegmentLength * result.NormalLength) > 0.1f && (result.SegmentLength * result.NormalLength) < (result.SegmentLength - 0.1f))
{//添加点
{
float handleSize = HandleUtility.GetHandleSize(closePoint) * 0.08f;
//画距离鼠标最近的点
Handles.SphereHandleCap(0, closePoint, Quaternion.identity, handleSize, Event.current.type);
}
int insertIndex = index + 1;
if (insertIndex == worldPoints.Length)
{
insertIndex = 0;
}
using (new Handles.DrawingScope(Color.white))
{
Handles.DrawLine(mousePos, worldPoints[index]);
Handles.DrawLine(mousePos, worldPoints[insertIndex]);
float handleSize = HandleUtility.GetHandleSize(mousePos) * 0.05f;
if (Handles.Button(mousePos, Quaternion.identity, handleSize, 0.1f, Handles.DotHandleCap))
{
Undo.RecordObject(shape, "add polygon point");
EditorUtility.SetDirty(shape);
var pt = matrix.inverse.MultiplyPoint(mousePos);
shape.Points.Insert(insertIndex, pt);
shape.SetDirty();
Event.current.Use();
}
}
}
}
SceneView.RepaintAll();
}