private void Ellipse_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
Point point = e.GetPosition(Center);
X = point.X;
Y = point.Y;
if (sender is Path)
{
Path arrow = (Path)sender;
if (arrow.Name == "XManipulator")
{
DraggingX = true;
}
else
{
DraggingY = true;
}
IsHitTestVisible = false;
TransformationChanged?.Invoke(this, TransformationEvent.TranslationStarted);
}
else if (sender is Rectangle)
{
DraggingX = true;
DraggingY = true;
IsHitTestVisible = false;
TransformationChanged?.Invoke(this, TransformationEvent.TranslationStarted);
}
else
{
e.MouseDevice.Capture((UIElement)sender);
IsRotating = true;
TransformationChanged?.Invoke(this, TransformationEvent.RotationStarted);
}
}
private void Ellipse_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
if (DraggingX || DraggingY)
{
TransformationChanged?.Invoke(this, TransformationEvent.TranslationEnded);
}
else
{
TransformationChanged?.Invoke(this, TransformationEvent.RotationEnded);
}
IsRotating = false;
DraggingX = false;
DraggingY = false;
e.MouseDevice.Capture(null);
}
private void OnTransformationChanged(object sender, EventArgs e) => TransformationChanged?.Invoke(this, EventArgs.Empty);
private void CalculateMatrix()
{
PhysicalObject parent = null;
Matrix = Matrix.Identity;
DrawMatrix = Matrix.Identity;
Vector2 scaledSize = ScaledSize;
// - Check if we have a parent
if (Parent != null && Parent is PhysicalObject)
{
parent = Parent as PhysicalObject;
}
// - Apply rotation to the matrix
{
Vector2 rotationCenter = -ComputeAnchorPosition(scaledSize, RotationCustomCenter, RotationCenter);
var matrix = Matrix.CreateTranslation(rotationCenter.X, rotationCenter.Y, 0);
Matrix *= Matrix.CreateRotationZ(Rotation);
Matrix *= Matrix.CreateTranslation(-rotationCenter.X, -rotationCenter.Y, 0);
}
// - Create translation to requests point
{
Vector2 finalPosition = Position;
if (parent != null)
{
// - Apply origin point
finalPosition *= ComputeVectorDir(Anchor, Origin);
finalPosition += ComputeAnchorPosition(parent.ScaledSize, CustomOrigin, Origin);
}
// - Apply anchor point
finalPosition -= ComputeAnchorPosition(scaledSize, CustomAnchor, Anchor);
// - Calculate matrix
Matrix *= Matrix.CreateTranslation(finalPosition.X, finalPosition.Y, 0);
}
// - Scale with parent
if (parent != null && ScaleWithParent)
{
Vector2 scaleReference = parent.ScaleReference;
Vector2 parentScaledSize = parent.ScaledSize;
Vector2 scaleFactor = parentScaledSize / scaleReference;
Matrix *= Matrix.CreateScale(scaleFactor.X, scaleFactor.Y, 0);
}
// - If we have a parent do relative transformation
if (parent != null)
{
Matrix *= parent.Matrix;
}
// - Set object size
DrawMatrix *= Matrix.CreateScale(scaledSize.Width, scaledSize.Y, 0) * Matrix;
DrawMatrix *= ToRelativeFloat;
MatrixInverse = Matrix.Invert(Matrix);
TransformationChanged?.Invoke(this, EventArgs.Empty);
}
