internal static void DoBoneHandle(Transform target, Dictionary <Transform, bool> validBones)
{
int id = target.name.GetHashCode();
Event evt = Event.current;
bool hasValidChildBones = false;
if (validBones != null)
{
foreach (Transform child in target)
{
if (validBones.ContainsKey(child))
{
hasValidChildBones = true;
break;
}
}
}
Vector3 basePoint = target.position;
List <Vector3> endPoints = new List <Vector3>();
// [case 525602] do not draw root.
if (!hasValidChildBones && target.parent != null)
{
endPoints.Add(target.position + (target.position - target.parent.position) * 0.4f);
}
else
{
foreach (Transform child in target)
{
// Only render bone connections to valid bones
// (except if no child bones are valid - then draw all connections)
if (validBones != null && !validBones.ContainsKey(child))
{
continue;
}
endPoints.Add(child.position);
}
}
for (int i = 0; i < endPoints.Count; i++)
{
Vector3 endPoint = endPoints[i];
switch (evt.GetTypeForControl(id))
{
case EventType.Layout:
{
float len = Vector3.Magnitude(endPoint - basePoint);
float size = len * k_BoneThickness;
Vector3[] vertices = GetBoneVertices(endPoint, basePoint, size);
HandleUtility.AddControl(id, DistanceToPolygone(vertices));
break;
}
case EventType.MouseMove:
if (id == HandleUtility.nearestControl)
{
HandleUtility.Repaint();
}
break;
case EventType.MouseDown:
{
// am I closest to the thingy?
if (!evt.alt && HandleUtility.nearestControl == id && evt.button == 0)
{
GUIUtility.hotControl = id; // Grab mouse focus
if (evt.shift)
{
Object[] selected = Selection.objects;
if (ArrayUtility.Contains(selected, target) == false)
{
ArrayUtility.Add(ref selected, target);
Selection.objects = selected;
}
}
else
{
Selection.activeObject = target;
}
EditorGUIUtility.PingObject(target);
evt.Use();
}
break;
}
case EventType.MouseDrag:
{
if (!evt.alt && GUIUtility.hotControl == id)
{
DragAndDrop.PrepareStartDrag();
DragAndDrop.objectReferences = new UnityEngine.Object[] { target };
DragAndDrop.StartDrag(ObjectNames.GetDragAndDropTitle(target));
// having a hot control set during drag makes the control eat the drag events
// and dragging of bones no longer works over the avatar configure window
// see case 912016
GUIUtility.hotControl = 0;
evt.Use();
}
break;
}
case EventType.MouseUp:
{
if (GUIUtility.hotControl == id && (evt.button == 0 || evt.button == 2))
{
GUIUtility.hotControl = 0;
evt.Use();
}
break;
}
case EventType.Repaint:
{
float len = Vector3.Magnitude(endPoint - basePoint);
if (len > 0)
{
color = GUIUtility.hotControl == 0 && HandleUtility.nearestControl == id ? Handles.preselectionColor : color;
// size used to be based on sqrt of length but that makes bones for
// huge creatures hair-thin and bones for tiny creatures bulky.
// So base on a fixed proportion instead.
float size = len * k_BoneThickness;
if (hasValidChildBones)
{
Handles.DrawBone(endPoint, basePoint, size);
}
else
{
Handles.SphereHandleCap(id, basePoint, target.rotation, size * .2f, EventType.Repaint);
}
}
break;
}
}
}
}