public static LineSegmentPoint Clamp(this LineSegmentPoint line, int width, int height)
{
line.P1.X = Math.Clamp(line.P1.X, 0, width);
line.P1.Y = Math.Clamp(line.P1.Y, 0, height);
line.P2.X = Math.Clamp(line.P2.X, 0, width);
line.P2.Y = Math.Clamp(line.P2.Y, 0, height);
return(line);
}
private void pictureMain_Paint(object sender, PaintEventArgs e)
{
if (scale > 0)
{
e.Graphics.ScaleTransform(1 / (float)scale, 1 / (float)scale);
}
// overlay shapes
foreach (ListViewItem it in listOverlay.CheckedItems)
{
int sn = int.Parse(it.Text);
object o = overlayShapes[sn];
switch (o.GetType().Name)
{
case "LineSegmentPoint":
LineSegmentPoint line = (LineSegmentPoint)o;
e.Graphics.DrawLine(shapeColors[sn % shapeColors.Length], line.P1.X, line.P1.Y, line.P2.X, line.P2.Y);
break;
case "CircleSegment":
CircleSegment circle = (CircleSegment)o;
e.Graphics.DrawEllipse(
shapeColors[sn % shapeColors.Length],
circle.Center.X - circle.Radius,
circle.Center.Y - circle.Radius,
circle.Radius * 2,
circle.Radius * 2);
break;
case "Point[]":
// polygon contour
System.Drawing.Point[] pts = (System.Drawing.Point[])o;
if (pts.Length > 2)
{
e.Graphics.DrawPolygon(shapeColors[sn % shapeColors.Length], (System.Drawing.Point[])o);
}
break;
case "Rectangle":
e.Graphics.DrawRectangle(shapeColors[sn % shapeColors.Length], (Rectangle)o);
break;
default:
break;
}
}
// ROI display
if (selectROI.X >= 0 || selectROI.Y >= 0 || selectROI.Width > 0 || selectROI.Height > 0)
{
e.Graphics.DrawRectangle(roiPen, selectROI.X, selectROI.Y, selectROI.Width, selectROI.Height);
}
}
private void mnu_Vision_HoughLine_Click(object sender, EventArgs e)
{
if (!GetBinary())
{
return;
}
dlgHoughLine dlg = new dlgHoughLine();
runVisionCommand(dlg, false);
LineSegmentPoint[] res = dlg.getLines();
overlayShapes.Clear();
if (res != null && res.Length > 0)
{
for (int i = 0; i < res.Length; i++)
{
LineSegmentPoint l = res[i];
overlayShapes[i] = l;
}
}
refreshOverlayListview();
}
private void refreshOverlayListview()
{
listOverlay.Items.Clear();
foreach (int key in overlayShapes.Keys)
{
ListViewItem it = listOverlay.Items.Add(key.ToString());
it.Checked = true;
it.BackColor = shapeColors[key % shapeColors.Length].Color;
object o = overlayShapes[key];
switch (o.GetType().Name)
{
case "LineSegmentPoint":
it.SubItems.Add("直线");
LineSegmentPoint line = (LineSegmentPoint)o;
it.SubItems.Add(line.P1.DistanceTo(line.P2).ToString("0.00"));
break;
case "CircleSegment":
it.SubItems.Add("圆");
CircleSegment circle = (CircleSegment)o;
it.SubItems.Add(circle.Radius.ToString("0"));
break;
case "Point[]":
it.SubItems.Add("轮廓");
it.SubItems.Add("");
break;
case "Rectangle":
it.SubItems.Add("矩形");
it.SubItems.Add("");
break;
default:
break;
}
}
}
