public void DrawTracker(Graphics canvas, Point centerDot, int radiuArc, CurvedRailEle.DirectonCurved direction)
{
if (canvas == null)
{
throw new Exception("Graphics对象Canvas不能为空");
}
Point center = new Point(centerDot.X * drawMultiFactor, centerDot.Y * drawMultiFactor);
int radiu = radiuArc * drawMultiFactor;
Point[] points = new Point[4];
Pen pen = new Pen(Color.Blue, 1);
//SolidBrush bsh = new SolidBrush(Color.Black);
switch (direction)
{
case CurvedRailEle.DirectonCurved.first:
points[0] = center;
points[1] = new Point(center.X + radiu, center.Y);
points[2] = new Point(center.X + radiu, center.Y + radiu);
points[3] = new Point(center.X, center.Y + radiu);
break;
case CurvedRailEle.DirectonCurved.second:
points[0] = center;
points[1] = new Point(center.X, center.Y + radiu);
points[2] = new Point(center.X - radiu, center.Y + radiu);
points[3] = new Point(center.X - radiu, center.Y);
break;
case CurvedRailEle.DirectonCurved.third:
points[0] = center;
points[1] = new Point(center.X - radiu, center.Y);
points[2] = new Point(center.X - radiu, center.Y - radiu);
points[3] = new Point(center.X, center.Y - radiu);
break;
case CurvedRailEle.DirectonCurved.four:
points[0] = center;
points[1] = new Point(center.X, center.Y - radiu);
points[2] = new Point(center.X + radiu, center.Y - radiu);
points[3] = new Point(center.X + radiu, center.Y);
break;
case CurvedRailEle.DirectonCurved.NULL:
break;
}
for (int i = 0; i < 4; i++)
{
Rectangle rc = new Rectangle(points[i].X - 4, points[i].Y - 4, 8, 8);
canvas.DrawRectangle(pen, rc);
//canvas.FillRectangle(bsh, rc);
}
pen.Dispose();
//bsh.Dispose();
}
public int HandleHitTest(Point point,
Point center,
int radiu,
CurvedRailEle.DirectonCurved direction)
{
Point[] points = new Point[4];
switch (direction)
{
case CurvedRailEle.DirectonCurved.first:
points[0] = center;
points[1] = new Point(center.X + radiu, center.Y);
points[2] = new Point(center.X + radiu, center.Y + radiu);
points[3] = new Point(center.X, center.Y + radiu);
break;
case CurvedRailEle.DirectonCurved.second:
points[0] = center;
points[1] = new Point(center.X, center.Y + radiu);
points[2] = new Point(center.X - radiu, center.Y + radiu);
points[3] = new Point(center.X - radiu, center.Y);
break;
case CurvedRailEle.DirectonCurved.third:
points[0] = center;
points[1] = new Point(center.X - radiu, center.Y);
points[2] = new Point(center.X - radiu, center.Y - radiu);
points[3] = new Point(center.X, center.Y - radiu);
break;
case CurvedRailEle.DirectonCurved.four:
points[0] = center;
points[1] = new Point(center.X, center.Y - radiu);
points[2] = new Point(center.X + radiu, center.Y - radiu);
points[3] = new Point(center.X + radiu, center.Y);
break;
case CurvedRailEle.DirectonCurved.NULL:
break;
}
for (int i = 0; i < 4; i++)
{
Point pt = points[i];
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,
Point centerArc,
int radiuArc,
CurvedRailEle.DirectonCurved direction)
{
Point center = new Point(centerArc.X * drawMultiFactor, centerArc.Y * drawMultiFactor);
int radiu = radiuArc * drawMultiFactor;
if (isSelected)
{
int handleHit = HandleHitTest(point, center, radiu, direction);
if (handleHit > 0)
{
return(handleHit);
}
}
Point[] wrapper = new Point[1];
wrapper[0] = point;
Rectangle rc = new Rectangle();
Point[] points = new Point[4];
switch (direction)
{
case CurvedRailEle.DirectonCurved.first:
points[0] = center;
points[2] = new Point(center.X + radiu, center.Y + radiu);
rc = new Rectangle(points[0].X, points[0].Y, points[2].X - points[0].X, points[2].Y - points[0].Y);
break;
case CurvedRailEle.DirectonCurved.second:
points[1] = new Point(center.X, center.Y + radiu);
points[3] = new Point(center.X - radiu, center.Y);
rc = new Rectangle(points[3].X, points[3].Y, points[1].X - points[3].X, points[1].Y - points[3].Y);
break;
case CurvedRailEle.DirectonCurved.third:
points[0] = center;
points[2] = new Point(center.X - radiu, center.Y - radiu);
rc = new Rectangle(points[2].X, points[2].Y, points[0].X - points[2].X, points[0].Y - points[2].Y);
break;
case CurvedRailEle.DirectonCurved.four:
points[1] = new Point(center.X, center.Y - radiu);
points[3] = new Point(center.X + radiu, center.Y);
rc = new Rectangle(points[1].X, points[1].Y, points[3].X - points[1].X, points[3].Y - points[1].Y);
break;
case CurvedRailEle.DirectonCurved.NULL:
break;
}
GraphicsPath path = new GraphicsPath();
path.AddRectangle(rc);
Region region = new Region(path);
if (region.IsVisible(wrapper[0]))
{
return(0);
}
else
{
return(-1);
}
}
public Rectangle Scale(
int handle,
int dx,
int dy,
Point center,
int radiu,
CurvedRailEle.DirectonCurved direction)
{
Point[] points = new Point[4];
switch (direction)
{
case CurvedRailEle.DirectonCurved.first:
points[0] = center;
points[1] = new Point(center.X + radiu, center.Y);
points[2] = new Point(center.X + radiu, center.Y + radiu);
points[3] = new Point(center.X, center.Y + radiu);
break;
case CurvedRailEle.DirectonCurved.second:
points[0] = center;
points[1] = new Point(center.X, center.Y + radiu);
points[2] = new Point(center.X - radiu, center.Y + radiu);
points[3] = new Point(center.X - radiu, center.Y);
break;
case CurvedRailEle.DirectonCurved.third:
points[0] = center;
points[1] = new Point(center.X - radiu, center.Y);
points[2] = new Point(center.X - radiu, center.Y - radiu);
points[3] = new Point(center.X, center.Y - radiu);
break;
case CurvedRailEle.DirectonCurved.four:
points[0] = center;
points[1] = new Point(center.X, center.Y - radiu);
points[2] = new Point(center.X + radiu, center.Y - radiu);
points[3] = new Point(center.X + radiu, center.Y);
break;
case CurvedRailEle.DirectonCurved.NULL:
break;
}
Point pt = points[handle - 1];
Point[] wrapper = new Point[] { pt };
switch (direction)
{
case CurvedRailEle.DirectonCurved.first:
if (1 == handle)
{
int var = dx;
if (20 > radiu)
{
if (dx < 0)
{
pt.Offset(var, var);
}
else
{
return(new Rectangle(pt.X, pt.Y, radiu, radiu));
}
}
pt.Offset(var, var);
}
else if (2 == handle)
{
if (20 > radiu)
{
if (dx > 0)
{
pt.Offset(dx, 0);
}
else
{
return(new Rectangle(points[0].X, points[0].Y, radiu, radiu));
}
}
pt.Offset(dx, 0);
}
else if (3 == handle)
{
int var = dx;
if (20 > radiu)
{
if (dx > 0)
{
pt.Offset(var, var);
}
else
{
return(new Rectangle(points[0].X, points[0].Y, radiu, radiu));
}
}
pt.Offset(var, var);
}
else if (4 == handle)
{
if (20 > radiu)
{
if (dy > 0)
{
pt.Offset(0, dy);
}
else
{
return(new Rectangle(points[0].X, points[0].Y, radiu, radiu));
}
}
pt.Offset(0, dy);
}
break;
case CurvedRailEle.DirectonCurved.second:
if (1 == handle)
{
int var = dx;
if (20 > radiu)
{
if (dx > 0)
{
pt.Offset(var, var);
}
else
{
return(new Rectangle(pt.X, pt.Y, radiu, radiu));
}
}
pt.Offset(var, var);
}
else if (2 == handle)
{
if (20 > radiu)
{
if (dy > 0)
{
pt.Offset(0, dy);
}
else
{
return(new Rectangle(points[0].X, points[0].Y, radiu, radiu));
}
}
pt.Offset(0, dy);
}
else if (3 == handle)
{
int var = dx;
if (20 > radiu)
{
if (dx < 0)
{
pt.Offset(var, var);
}
else
{
return(new Rectangle(points[0].X, points[0].Y, radiu, radiu));
}
}
pt.Offset(var, var);
}
else if (4 == handle)
{
if (20 > radiu)
{
if (dx < 0)
{
pt.Offset(dx, 0);
}
else
{
return(new Rectangle(points[0].X, points[0].Y, radiu, radiu));
}
}
pt.Offset(dx, 0);
}
break;
case CurvedRailEle.DirectonCurved.third:
if (1 == handle)
{
int var = dx;
if (20 > radiu)
{
if (dx > 0)
{
pt.Offset(var, var);
}
else
{
return(new Rectangle(pt.X, pt.Y, radiu, radiu));
}
}
pt.Offset(var, var);
}
else if (2 == handle)
{
if (20 > radiu)
{
if (dx < 0)
{
pt.Offset(dx, 0);
}
else
{
return(new Rectangle(points[0].X, points[0].Y, radiu, radiu));
}
}
pt.Offset(dx, 0);
}
else if (3 == handle)
{
int var = dx;
if (20 > radiu)
{
if (dx < 0)
{
pt.Offset(var, var);
}
else
{
return(new Rectangle(points[0].X, points[0].Y, radiu, radiu));
}
}
pt.Offset(var, var);
}
else if (4 == handle)
{
if (20 > radiu)
{
if (dy < 0)
{
pt.Offset(0, dy);
}
else
{
return(new Rectangle(points[0].X, points[0].Y, radiu, radiu));
}
}
pt.Offset(0, dy);
}
break;
case CurvedRailEle.DirectonCurved.four:
if (1 == handle)
{
int var = dx;
if (20 > radiu)
{
if (dx < 0)
{
pt.Offset(var, var);
}
else
{
return(new Rectangle(pt.X, pt.Y, radiu, radiu));
}
}
pt.Offset(var, var);
}
else if (2 == handle)
{
if (20 > radiu)
{
if (dy < 0)
{
pt.Offset(0, dy);
}
else
{
return(new Rectangle(points[0].X, points[0].Y, radiu, radiu));
}
}
pt.Offset(0, dy);
}
else if (3 == handle)
{
int var = dx;
if (20 > radiu)
{
if (dx > 0)
{
pt.Offset(var, var);
}
else
{
return(new Rectangle(points[0].X, points[0].Y, radiu, radiu));
}
}
pt.Offset(var, var);
}
else if (4 == handle)
{
if (20 > radiu)
{
if (dy > 0)
{
pt.Offset(0, dy);
}
else
{
return(new Rectangle(points[0].X, points[0].Y, radiu, radiu));
}
}
pt.Offset(0, dy);
}
break;
case CurvedRailEle.DirectonCurved.NULL:
break;
}
wrapper[0] = pt;
int dw, dh;
dw = wrapper[0].X - points[handle - 1].X;
dh = wrapper[0].Y - points[handle - 1].Y;
switch (direction)
{
case CurvedRailEle.DirectonCurved.first:
switch (handle)
{
case 1:
radiu -= dw;
center = wrapper[0];
break;
case 2:
radiu += dw;
break;
case 3:
radiu += dw;
break;
case 4:
radiu += dh;
break;
}
break;
case CurvedRailEle.DirectonCurved.second:
switch (handle)
{
case 1:
radiu += dw;
center = wrapper[0];
break;
case 2:
radiu += dh;
break;
case 3:
radiu -= dw;
break;
case 4:
radiu -= dw;
break;
}
break;
case CurvedRailEle.DirectonCurved.third:
switch (handle)
{
case 1:
radiu += dw;
center = wrapper[0];
break;
case 2:
radiu -= dw;
break;
case 3:
radiu -= dw;
break;
case 4:
radiu -= dh;
break;
}
break;
case CurvedRailEle.DirectonCurved.four:
switch (handle)
{
case 1:
radiu -= dw;
center = wrapper[0];
break;
case 2:
radiu -= dh;
break;
case 3:
radiu += dw;
break;
case 4:
radiu += dh;
break;
}
break;
case CurvedRailEle.DirectonCurved.NULL:
break;
}
return(new Rectangle(center.X, center.Y, radiu, radiu));
}
