public void DrawTracker(Graphics canvas, CrossEle.DirectionCross direction)
{
if (canvas == null)
{
throw new Exception("Graphics对象Canvas不能为空");
}
Pen pen = new Pen(Color.Blue, 1);
//SolidBrush bsh = new SolidBrush(Color.Blue);
Point[] pts = new Point[4];
pts[0] = pointList[0];
pts[1] = pointList[3];
pts[2] = pointList[5];
pts[3] = pointList[7];
if (drawMultiFactor != 1)
{
for (int i = 0; i < pts.Length; i++)
{
pts[i].Offset(pts[i].X * drawMultiFactor - pts[i].X, pts[i].Y * drawMultiFactor - pts[i].Y);
}
}
for (int i = 0; i < 4; i++)
{
Rectangle rc = new Rectangle(pts[i].X - 4, pts[i].Y - 4, 8, 8);
canvas.DrawRectangle(pen, rc);
//canvas.FillRectangle(bsh, rc);
}
pen.Dispose();
//bsh.Dispose();
}
public int HandleHitTest(Point point, CrossEle.DirectionCross direction, bool isMirror)
{
Point[] pts = new Point[4];
pts[0] = pointList[0];
pts[1] = pointList[3];
pts[2] = pointList[5];
pts[3] = pointList[7];
Point tempPt = Point.Empty;
for (int i = 0; i < 4; i++)
{
Point pt = pts[i];
pt.Offset(pt.X * drawMultiFactor - pt.X, pt.Y * drawMultiFactor - pt.Y);
Rectangle rc = new Rectangle(pt.X - 3, pt.Y - 3, 6, 6);
if (rc.Contains(point))
{
return(i + 1);
}
}
return(-1);
}
public int HitTest(
Point point,
bool isSelected,
CrossEle.DirectionCross direction,
bool isMirror)
{
if (isSelected)
{
int handleHit = HandleHitTest(point, direction, isMirror);
if (handleHit > 0)
{
return(handleHit);
}
}
Point wrapper = new Point();
wrapper = point;
Rectangle rc = new Rectangle();
Point[] pts = new Point[4];
if (!isMirror)
{
pts[0] = pointList[0];
pts[2] = pointList[5];
}
else if (isMirror)
{
pts[0] = pointList[5];
pts[2] = pointList[0];
}
pts[1] = pointList[3];
pts[3] = pointList[7];
if (drawMultiFactor != 1)
{
Point tempPt = Point.Empty;
int n = pts.Length;
for (int i = 0; i < n; i++)
{
tempPt = pts[i];
tempPt.Offset(tempPt.X * drawMultiFactor - tempPt.X, tempPt.Y * drawMultiFactor - tempPt.Y);
pts[i] = tempPt;
}
}
switch (direction)
{
case CrossEle.DirectionCross.first:
rc = new Rectangle(pts[0].X, pts[3].Y, pts[2].X - pts[0].X, pts[1].Y - pts[3].Y);
break;
case CrossEle.DirectionCross.second:
rc = new Rectangle(pts[1].X, pts[0].Y, pts[3].X - pts[1].X, pts[2].Y - pts[0].Y);
break;
case CrossEle.DirectionCross.third:
rc = new Rectangle(pts[2].X, pts[1].Y, pts[0].X - pts[2].X, pts[3].Y - pts[1].Y);
break;
case CrossEle.DirectionCross.four:
rc = new Rectangle(pts[3].X, pts[2].Y, pts[1].X - pts[3].X, pts[0].Y - pts[2].Y);
break;
default:
break;
}
GraphicsPath path = new GraphicsPath();
path.AddRectangle(rc);
Region region = new Region(path);
if (region.IsVisible(wrapper))
{
return(0);
}
else
{
return(-1);
}
}
