/// <summary>
/// 得到矩形的边界线
/// </summary>
/// <param name="pt1"></param>
/// <param name="pt2"></param>
/// <returns></returns>
public static PartitionLine[] GetRectBorderLines(Point pt1, Point pt2)
{
PartitionLine[] borderLines = new PartitionLine[4];
Rectangle rect = CommonFuns.PointToRectangle(pt1, pt2);
borderLines[0] = new PartitionLine(rect.X, rect.X + rect.Width, rect.Y, true);
borderLines[1] = new PartitionLine(rect.X, rect.X + rect.Width, rect.Y + rect.Height, true);
borderLines[2] = new PartitionLine(rect.Y, rect.Y + rect.Height, rect.X, false);
borderLines[3] = new PartitionLine(rect.Y, rect.Y + rect.Height, rect.X + rect.Width, false);
return(borderLines);
}
public static void Invalidate(Control ctl, int pixel, Point pt1, Point pt2, float zoom)
{
Rectangle rect = CommonFuns.PointToRectangle(pt1, pt2);
if (rect.Width == 0)
{
rect.Width = 1;
}
if (rect.Height == 0)
{
rect.Height = 1;
}
CommonFuns.Invalidate(ctl, pixel, rect, zoom);
}
/// <summary>
/// 使包含两点的局部矩形重绘
/// </summary>
/// <param name="ctl"></param>
/// <param name="pixel"></param>
/// <param name="pt1"></param>
/// <param name="pt2"></param>
public static void Invalidate(Control ctl, int pixel, Point pt1, Point pt2)
{
Rectangle rect = CommonFuns.PointToRectangle(pt1, pt2);
if (rect.Width == 0)
{
rect.Width = 1;
}
if (rect.Height == 0)
{
rect.Height = 1;
}
ctl.Invalidate(new Rectangle(rect.X - pixel, rect.Y - pixel, rect.Width + 4 * pixel, rect.Height + 4 * pixel));
}
