public static void ApplyTransformationToWidgetsGroupOobb(IEnumerable <Widget> widgetsInParentSpace,
Widget parentWidget, Matrix32 oobbInParentSpace,
Vector2 curMousePosInParentSpace, Vector2 prevMousePosInParentSpace,
Func <Vector2, Vector2, Matrix32> onCalcTransformationFromOriginalVectorInOobbSpaceAndDeformedVectorInOobbSpace)
{
Vector2 pivotInParentSpace = oobbInParentSpace.T;
Vector2 pivotInOobbSpace = pivotInParentSpace;
Vector2 controlPointInOobbSpace = prevMousePosInParentSpace;
Vector2 targetPointInOobbSpace = curMousePosInParentSpace;
Matrix32 transformationFromParentToOobb = oobbInParentSpace.CalcInversed();
pivotInOobbSpace = pivotInOobbSpace * transformationFromParentToOobb;
controlPointInOobbSpace = controlPointInOobbSpace * transformationFromParentToOobb;
targetPointInOobbSpace = targetPointInOobbSpace * transformationFromParentToOobb;
Vector2 originalVectorInOobbSpace = controlPointInOobbSpace - pivotInOobbSpace;
Vector2 deformedVectorInOobbSpace = targetPointInOobbSpace - pivotInOobbSpace;
// calculate transformation from original vector to deformed vector
Matrix32 deformationInOobbSpace =
onCalcTransformationFromOriginalVectorInOobbSpaceAndDeformedVectorInOobbSpace(originalVectorInOobbSpace,
deformedVectorInOobbSpace);
ApplyTransformationToWidgetsGroupOobb(
widgetsInParentSpace, parentWidget, oobbInParentSpace, deformationInOobbSpace
);
}
void RescaleHelper(List <PointObject> points, int controlPointIndex, bool proportional, bool centerProportional)
{
var t = sv.Scene.CalcTransitionToSpaceOf(Document.Current.Container.AsWidget);
t.T = Vector2.Zero;
var transformedMouseDelta = (sv.MousePosition - initialMousePosition) * t / Document.Current.Container.AsWidget.Size;
Vector2 origin;
var idx = (controlPointIndex + 4) % 8 / 2;
var next = (idx + 1) % 4;
var prev = (idx + 3) % 4;
var axisX = hullNormalized[next] - hullNormalized[idx];
var axisY = hullNormalized[prev] - hullNormalized[idx];
if (controlPointIndex == 7 || controlPointIndex == 3 || controlPointIndex == 1 || controlPointIndex == 5)
{
origin = (hullNormalized[next] + hullNormalized[idx]) / 2;
}
else
{
origin = hullNormalized[idx];
}
axisX.Snap(Vector2.Zero);
axisY.Snap(Vector2.Zero);
if (axisX == Vector2.Zero)
{
axisX = new Vector2(-axisY.Y, axisY.X);
}
if (axisY == Vector2.Zero)
{
axisY = new Vector2(-axisX.Y, axisX.X);
}
var basis = new Matrix32(axisX, axisY, centerProportional ? (hullNormalized.V1 + hullNormalized.V3) / 2 : origin);
var basisInversed = basis.CalcInversed();
var deltaSize = basisInversed * transformedMouseDelta - Vector2.Zero * basisInversed;
deltaSize = (deltaSize * (controlPointIndex % 2 == 0 ? Vector2.One : Vector2.Down)).Snap(Vector2.Zero);
if (deltaSize == Vector2.Zero)
{
return;
}
var avSize = 0.5f * (deltaSize.X + deltaSize.Y);
if (proportional)
{
if (controlPointIndex == 7 || controlPointIndex == 3 || controlPointIndex == 1 || controlPointIndex == 5)
{
deltaSize.X = deltaSize.Y;
}
else
{
deltaSize.X = avSize;
deltaSize.Y = avSize;
}
}
for (var i = 0; i < points.Count; i++)
{
var deltaPos = basisInversed * points[i].Position * deltaSize * basis - Vector2.Zero * basis;
Core.Operations.SetAnimableProperty.Perform(points[i], nameof(PointObject.Position), points[i].Position + deltaPos, CoreUserPreferences.Instance.AutoKeyframes);
}
}
public static void ApplyTransformationToWidgetsGroupOobb(IEnumerable <Widget> widgetsInParentSpace,
Widget parentWidget, Matrix32 oobbInParentSpace, Matrix32 oobbTransformation)
{
Matrix32 originalOobbToWorldSpace = oobbInParentSpace * parentWidget.LocalToWorldTransform;
foreach (Widget widget in widgetsInParentSpace)
{
Matrix32 widgetToOriginalOobbSpace = widget.LocalToWorldTransform * originalOobbToWorldSpace.CalcInversed();
// calculate new oobb transformation in world space
Matrix32 deformedOobbToWorldSpace = oobbTransformation * originalOobbToWorldSpace;
Matrix32 deformedWidgetToWorldSpace = widgetToOriginalOobbSpace * deformedOobbToWorldSpace;
Matrix32 deformedWidgetToParentSpace =
deformedWidgetToWorldSpace * widget.ParentWidget.LocalToWorldTransform.CalcInversed();
Transform2 widgetResultTransform = widget.CalcApplicableTransfrom2(deformedWidgetToParentSpace);
// correct rotation delta, to prevent wrong values if new angle 0 and previous is 359,
// then rotationDelta must be 1
float rotationDelta = (widget.Rotation - widgetResultTransform.Rotation).NormalizeRotation();
if ((widget.Position - widgetResultTransform.Translation).Length > Mathf.ZeroTolerance)
{
SetAnimableProperty.Perform(widget, nameof(Widget.Position), widgetResultTransform.Translation);
}
if (Mathf.Abs(rotationDelta) > Mathf.ZeroTolerance)
{
SetAnimableProperty.Perform(widget, nameof(Widget.Rotation), widget.Rotation + rotationDelta);
}
if ((widget.Scale - widgetResultTransform.Scale).Length > Mathf.ZeroTolerance)
{
SetAnimableProperty.Perform(widget, nameof(Widget.Scale), widgetResultTransform.Scale);
}
}
}