public static void ApplyTransformationToWidgetsGroupObb(IEnumerable <Widget> widgetsInParentSpace,
Matrix32d obbInParentSpace, Vector2d currentMousePosInParentSpace, Vector2d previousMousePosInParentSpace,
bool convertScaleToSize, CalculateTransformationDelegate onCalculateTransformation)
{
if (Math.Abs(obbInParentSpace.CalcDeterminant()) < Mathf.ZeroTolerance)
{
return;
}
Matrix32d transformationFromParentToObb = obbInParentSpace.CalcInversed();
Vector2d controlPointInObbSpace = previousMousePosInParentSpace * transformationFromParentToObb;
Vector2d targetPointInObbSpace = currentMousePosInParentSpace * transformationFromParentToObb;
Vector2d originalVectorInObbSpace = controlPointInObbSpace;
Vector2d deformedVectorInObbSpace = targetPointInObbSpace;
Transform2d obbTransformation = onCalculateTransformation(
originalVectorInObbSpace, deformedVectorInObbSpace
);
ApplyTransformationToWidgetsGroupObb(
widgetsInParentSpace, obbInParentSpace, obbTransformation, convertScaleToSize
);
}
public static void ApplyTransformationToWidgetsGroupObb(IEnumerable <Widget> widgetsInParentSpace,
Matrix32d obbInParentSpace, Transform2d obbTransformation, bool convertScaleToSize)
{
Matrix32d originalObbToParentSpace = obbInParentSpace;
if (Math.Abs(originalObbToParentSpace.CalcDeterminant()) < Mathf.ZeroTolerance)
{
return;
}
Matrix32d obbTransformationMatrix = obbTransformation.ToMatrix32();
foreach (Widget widget in widgetsInParentSpace)
{
WidgetZeroScalePreserver zeroScalePreserver = new WidgetZeroScalePreserver(widget);
zeroScalePreserver.Store();
try {
Matrix32d widgetToParentSpace = widget.CalcLocalToParentTransformDouble();
Matrix32d widgetToOriginalObbSpace = widgetToParentSpace * originalObbToParentSpace.CalcInversed();
// Calculate the new obb transformation in the parent space.
Matrix32d deformedObbToParentSpace = obbTransformationMatrix * originalObbToParentSpace;
Matrix32d deformedWidgetToParentSpace = widgetToOriginalObbSpace * deformedObbToParentSpace;
Transform2d widgetResultTransform = widget.ExtractTransform2Double(deformedWidgetToParentSpace,
widget.Rotation + obbTransformation.Rotation);
// Correct a rotation delta, to prevent wrong values if a new angle 0 and previous is 359,
// then rotationDelta must be 1.
double rotationDelta = Mathd.Wrap180(widgetResultTransform.Rotation - widget.Rotation);
// Reduce an influence of small transformations (Scale, Position, Rotation).
bool needChangeScaleX = IsSignificantChangeOfValue(widget.Scale.X, widgetResultTransform.Scale.X);
bool needChangeScaleY = IsSignificantChangeOfValue(widget.Scale.Y, widgetResultTransform.Scale.Y);
if (needChangeScaleX || needChangeScaleY)
{
Vector2 useScale = new Vector2(
(float)(!needChangeScaleX ? widget.Scale.X : widgetResultTransform.Scale.X),
(float)(!needChangeScaleY ? widget.Scale.Y : widgetResultTransform.Scale.Y)
);
useScale = zeroScalePreserver.AdjustToScale(useScale);
zeroScalePreserver.Restore();
if (!convertScaleToSize)
{
SetAnimableProperty.Perform(widget, nameof(Widget.Scale), useScale,
CoreUserPreferences.Instance.AutoKeyframes);
}
else
{
Vector2 useSize = new Vector2(
Math.Abs(widget.Scale.X) < FloatSignificantDelta
? widget.Size.X
: widget.Size.X * Math.Abs(useScale.X / widget.Scale.X),
Math.Abs(widget.Scale.Y) < FloatSignificantDelta
? widget.Size.Y
: widget.Size.Y * Math.Abs(useScale.Y / widget.Scale.Y)
);
SetAnimableProperty.Perform(widget, nameof(Widget.Size), useSize,
CoreUserPreferences.Instance.AutoKeyframes);
}
}
bool needChangePositionX = IsSignificantChangeOfValue(widget.Position.X, widgetResultTransform.Translation.X);
bool needChangePositionY = IsSignificantChangeOfValue(widget.Position.Y, widgetResultTransform.Translation.Y);
if (needChangePositionX || needChangePositionY)
{
SetAnimableProperty.Perform(widget, nameof(Widget.Position),
new Vector2(
(float)(!needChangePositionX ? widget.Position.X : widgetResultTransform.Translation.X),
(float)(!needChangePositionY ? widget.Position.Y : widgetResultTransform.Translation.Y)
),
CoreUserPreferences.Instance.AutoKeyframes);
}
if (IsSignificantChangeByDelta(widget.Rotation, rotationDelta))
{
SetAnimableProperty.Perform(widget, nameof(Widget.Rotation), (float)(widget.Rotation + rotationDelta),
CoreUserPreferences.Instance.AutoKeyframes);
}
} finally {
zeroScalePreserver.Restore();
}
}
}