public Geometry GetCurrentGeometry()
{
两圆轨迹 轨迹线 = 当前轨迹线;
return(new PathGeometry(new PathFigure[]
{
new PathFigure(轨迹线.四边形的点集[0], new PathSegment[]
{
new PolyLineSegment(轨迹线.四边形的点集, true),
}, true),
}));
}
public void Move(Point point, double 半径 = 75)
{
_eraserElement.Width = 半径 * 2;
_eraserElement.Height = 半径 * 2;
var x = point.X - 半径;
var y = point.Y - 半径;
//EraserEllipse.Margin = new Thickness(x, y, 0, 0);
EraserTranslate.X = x;
EraserTranslate.Y = y;
_currentPoint = point;
this.半径 = 半径;
当前落点的圆 = new 圆(_currentPoint, 半径);
两圆轨迹 轨迹线 = 前一个落点圆.求两圆轨迹线(当前落点的圆);
当前轨迹线 = 轨迹线;
}