private static void DrawSceneViewGUI()
{
if (reloadPointsInfo)
{
reloadPointsInfo = false;
int num = animationPoints.Count;
InitPointsInfo();
if (pointShow && animationPoints.Count > num)
{
// FIXME 这是为了修复新增点的时候，方向杆ID被改变了，所以操作无效
// 不完美，需要第二次点击的时候，才会获取新控件ID
GUIUtility.hotControl = 0;
Event.current.Use();
}
}
if (activeGameObject == null)
{
return;
}
List <AnimationPathPoint> points = animationPoints;
int numPos = points.Count;
for (int i = 0; i < numPos; i++)
{
AnimationPathPoint pathPoint = points[i];
pathPoint.worldPosition = GetWorldPosition(pathPoint.position);
}
for (int i = 0; i < numPos - 1; i++)
{
AnimationPathPoint pathPoint = points[i];
AnimationPathPoint nextPathPoint = points[i + 1];
Vector3 startTangent;
Vector3 endTangent;
AnimationPathPoint.CalcTangents(pathPoint, nextPathPoint, out startTangent, out endTangent);
Vector3 p0 = pathPoint.worldPosition;
Vector3 p1 = GetWorldPosition(startTangent);
Vector3 p2 = GetWorldPosition(endTangent);
Vector3 p3 = nextPathPoint.worldPosition;
Handles.DrawBezier(p0, p3, p1, p2, Color.white, null, 2f);
pathPoint.worldOutTangent = p1;
nextPathPoint.worldInTangent = p2;
}
if (!pointShow)
{
return;
}
Quaternion handleRotation = activeParentTransform != null
? activeParentTransform.rotation
: Quaternion.identity;
for (int i = 0; i < numPos; i++)
{
int pointIndex = i * 3;
Handles.color = Color.green;
AnimationPathPoint pathPoint = points[i];
Vector3 position = pathPoint.worldPosition;
float pointHandleSize = HandleUtility.GetHandleSize(position) * 0.04f;
float pointPickSize = pointHandleSize * 0.7f;
Handles.Label(position, " Point " + i);
if (Handles.Button(position, handleRotation, pointHandleSize, pointPickSize, Handles.DotCap))
{
selectedPointIndex = pointIndex;
if (Selection.activeGameObject != activeGameObject)
{
Selection.activeGameObject = activeGameObject;
}
AnimationWindowUtil.SetCurrentTime(pathPoint.time);
}
Handles.color = Color.grey;
int inIndex = pointIndex - 1;
int outIndex = pointIndex + 1;
if (selectedPointIndex < 0 || selectedPointIndex < inIndex || selectedPointIndex > outIndex)
{
continue;
}
if (i != 0)
{
Handles.DrawLine(position, pathPoint.worldInTangent);
if (Handles.Button(pathPoint.worldInTangent, handleRotation, pointHandleSize, pointPickSize, Handles.DotCap))
{
selectedPointIndex = inIndex;
}
if (selectedPointIndex == inIndex)
{
EditorGUI.BeginChangeCheck();
Vector3 pos = Handles.PositionHandle(pathPoint.worldInTangent, handleRotation);
if (EditorGUI.EndChangeCheck() && SetPointTangent(i, pos, true))
{
return;
}
}
}
if (i != numPos - 1)
{
Handles.DrawLine(position, pathPoint.worldOutTangent);
if (Handles.Button(pathPoint.worldOutTangent, handleRotation, pointHandleSize, pointPickSize, Handles.DotCap))
{
selectedPointIndex = outIndex;
}
if (selectedPointIndex == outIndex)
{
EditorGUI.BeginChangeCheck();
Vector3 pos = Handles.PositionHandle(pathPoint.worldOutTangent, handleRotation);
if (EditorGUI.EndChangeCheck() && SetPointTangent(i, pos, false))
{
return;
}
}
}
}
}
