private void Sh_MouseDown(object sender, MouseButtonEventArgs e)
{
t_resizing = Resizing.IsResizing;
t_handleMousePoint = new Point(e.GetPosition(t_container).X, e.GetPosition(t_container).Y);
// the handle being pressed determines a virtual selection rectangle transformation so that all
// handles can use same resizing code
SelectionHandle sh = (SelectionHandle)sender;
double left = SelectionLocationLeft;
double top = SelectionLocationTop;
System.Windows.Point point0 = new Point(left, top);
System.Windows.Point point1 = new Point(left + t_selection.Width, top);
System.Windows.Point point2 = new Point(left + t_selection.Width, top + t_selection.Height);
System.Windows.Point point3 = new Point(left, top + t_selection.Height);
switch (sh.Order)
{
case 0:
t_currentMatrix = 0; // rotation 180 °
t_transformedRectanglePoints[0] = Engine.Calc.Matrix.Dot(point2, t_matrices[t_currentMatrix]);
t_transformedRectanglePoints[1] = Engine.Calc.Matrix.Dot(point3, t_matrices[t_currentMatrix]);
t_transformedRectanglePoints[2] = Engine.Calc.Matrix.Dot(point0, t_matrices[t_currentMatrix]);
t_transformedRectanglePoints[3] = Engine.Calc.Matrix.Dot(point1, t_matrices[t_currentMatrix]);
break;
case 1:
t_currentMatrix = 1; // rotation 90 °
t_transformedRectanglePoints[0] = Engine.Calc.Matrix.Dot(point3, t_matrices[t_currentMatrix]);
t_transformedRectanglePoints[1] = Engine.Calc.Matrix.Dot(point0, t_matrices[t_currentMatrix]);
t_transformedRectanglePoints[2] = Engine.Calc.Matrix.Dot(point1, t_matrices[t_currentMatrix]);
t_transformedRectanglePoints[3] = Engine.Calc.Matrix.Dot(point2, t_matrices[t_currentMatrix]);
break;
case 2:
t_currentMatrix = 2; // rotation 0 °
t_transformedRectanglePoints[0] = Engine.Calc.Matrix.Dot(point0, t_matrices[t_currentMatrix]);
t_transformedRectanglePoints[1] = Engine.Calc.Matrix.Dot(point1, t_matrices[t_currentMatrix]);
t_transformedRectanglePoints[2] = Engine.Calc.Matrix.Dot(point2, t_matrices[t_currentMatrix]);
t_transformedRectanglePoints[3] = Engine.Calc.Matrix.Dot(point3, t_matrices[t_currentMatrix]);
break;
case 3:
t_currentMatrix = 3; // rotation 270 °
t_transformedRectanglePoints[0] = Engine.Calc.Matrix.Dot(point1, t_matrices[t_currentMatrix]);
t_transformedRectanglePoints[1] = Engine.Calc.Matrix.Dot(point2, t_matrices[t_currentMatrix]);
t_transformedRectanglePoints[2] = Engine.Calc.Matrix.Dot(point3, t_matrices[t_currentMatrix]);
t_transformedRectanglePoints[3] = Engine.Calc.Matrix.Dot(point0, t_matrices[t_currentMatrix]);
break;
}
t_container.MouseMove += Sh_MouseMove;
}
private PaintualUI.Controls.SelectionHandle CreateHandles(System.Windows.Point p)
{
PaintualUI.Controls.SelectionHandle h = new SelectionHandle(p.X - SelectionHandle.Offset, p.Y - SelectionHandle.Offset);
return(h);
}