public void Resize(double factorX, double factorY, Point refer)
{
foreach (GraphicVisual gv in this)
{
double alfa = (RefAngle - gv.Angle) * Math.PI / 180;
double sin2 = Math.Pow(Math.Sin(alfa), 2);
double cos2 = 1 - sin2;
double fx = cos2 * factorX + sin2 * factorY;
double fy = sin2 * factorX + cos2 * factorY;
//Point origin = new RotateTransform(RefAngle).Transform(gv.Origin);
//origin = new ScaleTransform(1 + factorX, 1 + factorY, refer.X, refer.Y).Transform(origin);
//gv.Origin = new RotateTransform(-RefAngle).Transform(origin);
//Point localRefer = gv.Transform.Inverse.Transform(refer);
Point localRefer = gv.Transform.Inverse.Transform(refer);
Point outRefer = new RotateTransform(RefAngle).Transform(refer);
GraphicVisualHelper.ScaleGraphicVisual(gv, 1 + fx, 1 + fy, outRefer);
//GraphicVisualHelper.ScaleGraphicVisual(gv, 1 + fx, 1 + fy);
}
Point loc = new ScaleTransform(1 + factorX, 1 + factorY, refer.X, refer.Y).Transform(RefRect.Location);
RefRect = new Rect(loc.X, loc.Y, RefRect.Width * (1 + factorX), RefRect.Height * (1 + factorY));
UpdateSelection();
}
private DrawingGroup GetSelectionDrawing()
{
DrawingGroup drawingGroup = new DrawingGroup();
foreach (GraphicVisual gv in _visuals)
{
var drawing = GraphicVisualHelper.GetGraphicVisualDrawing(gv);
drawing.Transform = gv.Transform;
drawingGroup.Children.Add(drawing);
}
return(drawingGroup);
}
public void Move(Vector delta)
{
// 图形移动距离保留两位小数
delta.X = Math.Round(delta.X, 2);
delta.Y = Math.Round(delta.Y, 2);
// 移动图形
foreach (GraphicVisual gv in this)
{
GraphicVisualHelper.MoveGraphicVisual(gv, delta);
}
// 移动 RefRect
delta = (Vector)(new RotateTransform(-RefAngle).Transform((Point)delta));
RefRect = new Rect(RefRect.Location + delta, RefRect.Size);
UpdateSelection();
}
public void Rotate(double delta)
{
Point center = new Point(RefRect.X + RefRect.Width / 2, RefRect.Y + RefRect.Height / 2);
center = new RotateTransform(RefAngle).Transform(center);
double angle = Math.Round(delta, 2);
foreach (GraphicVisual gv in this)
{
GraphicVisualHelper.RotateGraphicVisual(gv, angle, center);
}
Point loc = new RotateTransform(RefAngle).Transform(RefRect.Location);
loc = new RotateTransform(angle, center.X, center.Y).Transform(loc);
RefAngle += angle;
loc = new RotateTransform(-RefAngle).Transform(loc);
RefRect = new Rect(loc, RefRect.Size);
UpdateSelection();
}
