private static Vector2 GetBonePositionInSpaceOfParent(Bone node)
{
return(node.Position * node.CalcLocalToParentWidgetTransform());
}
private IEnumerator <object> Drag(Bone bone, BoneArray.Entry entry)
{
using (Document.Current.History.BeginTransaction()) {
var iniMousePos = sv.MousePosition;
var transform = Document.Current.Container.AsWidget.LocalToWorldTransform.CalcInversed();
var transformInversed = transform.CalcInversed();
int index = 0;
var dragDelta = Vector2.Zero;
while (sv.Input.IsMousePressed())
{
Document.Current.History.RollbackTransaction();
var snapEnabled = sv.Input.IsKeyPressed(Key.Alt);
Utils.ChangeCursorIfDefault(MouseCursor.Hand);
var items = Document.Current.Container.AsWidget.BoneArray.items;
index = 0;
SceneView.Instance.Components.GetOrAdd <CreateBoneHelper>().HitTip = default(Vector2);
if (items != null && snapEnabled)
{
for (var i = 0; i < items.Length; i++)
{
if (sv.HitTestControlPoint(transformInversed * items[i].Tip))
{
index = i;
break;
}
}
if (bone.Index != index)
{
SceneView.Instance.Components.GetOrAdd <CreateBoneHelper>().HitTip =
index != 0 ? items[index].Tip : default(Vector2);
}
}
var b = bone.Parent.AsWidget.BoneArray[bone.BaseIndex];
dragDelta = sv.MousePosition * transform - iniMousePos * transform;
var parentToLocalTransform = bone.CalcLocalToParentWidgetTransform().CalcInversed();
parentToLocalTransform.T = Vector2.Zero;
var position = parentToLocalTransform *
(entry.Joint - b.Tip + (index != 0 && index != bone.Index && snapEnabled ? items[index].Tip - entry.Joint : dragDelta));
Core.Operations.SetAnimableProperty.Perform(bone, nameof(Bone.Position), position, CoreUserPreferences.Instance.AutoKeyframes);
bone.Parent.Update(0);
yield return(null);
}
if (index != bone.Index && sv.Input.IsKeyPressed(Key.Alt))
{
Core.Operations.SetAnimableProperty.Perform(bone, nameof(Bone.Position), index == 0 ? entry.Joint + dragDelta : Vector2.Zero, CoreUserPreferences.Instance.AutoKeyframes);
var parentEntry = bone.Parent.AsWidget.BoneArray[index];
float parentAngle = (parentEntry.Tip - parentEntry.Joint).Atan2Deg;
var boneEntry = bone.Parent.AsWidget.BoneArray[bone.Index];
float boneAngle = (boneEntry.Tip - boneEntry.Joint).Atan2Deg;
Core.Operations.SetAnimableProperty.Perform(bone, nameof(Bone.Rotation), index == 0 ? boneAngle : boneAngle - parentAngle, CoreUserPreferences.Instance.AutoKeyframes);
Core.Operations.SetAnimableProperty.Perform(bone, nameof(Bone.BaseIndex), index, CoreUserPreferences.Instance.AutoKeyframes);
Core.Operations.SortBonesInChain.Perform(bone);
}
SceneView.Instance.Components.Remove <CreateBoneHelper>();
sv.Input.ConsumeKey(Key.Mouse0);
Window.Current.Invalidate();
Document.Current.History.CommitTransaction();
}
}