//=============================================================================
protected override void OnRender(DrawingContext drawingContext)
{
if (drawingContext == null)
{
return;
}
DrawingSheet sheet = this.Sheet;
if (sheet == null)
{
return;
}
// STEP 1.
// Draw sheet content with opacity.
drawingContext.PushOpacity(0.2);
//
int LengthInPixels = Utils.GetWholeNumber(this.ActualWidth); //Utils.GetWholeNumber(cs.GetWidthInPixels(DrawingGlobalSize.Width, Length_X));
int HeightInPixels = Utils.GetWholeNumber(this.ActualHeight); //Utils.GetWholeNumber(cs.GetHeightInPixels(DrawingGlobalSize.Height, Length_Y));
//
ImageCoordinateSystem ics = new ImageCoordinateSystem(LengthInPixels, HeightInPixels, new Vector(0.0, 0.0), new Size(sheet.Length, sheet.Width), 0.0);
DefaultGeomDisplaySettings geomDisplaySettings = new DefaultGeomDisplaySettings();
geomDisplaySettings.DisplayText = false;
//
if (sheet.Rectangles != null)
{
foreach (BaseRectangleGeometry geom in sheet.Rectangles)
{
if (geom == null)
{
continue;
}
// Dont display SheetElevationGeometry, because it has fixed size in pixels
if (geom is SheetElevationGeometry)
{
continue;
}
geom.Draw(drawingContext, ics, geomDisplaySettings);
}
}
// Pop opacity
drawingContext.Pop();
// STEP 2.
// Draw gray sheet border.
Size drawingSize = new Size(sheet.Length, sheet.Width);
Point pt_01 = ics.GetLocalPoint(new Point(0.0, 0.0), sheet.UnitsPerCameraPixel, sheet.GetCameraOffset());
Point pt_02 = ics.GetLocalPoint(new Point(sheet.Length, sheet.Width), sheet.UnitsPerCameraPixel, sheet.GetCameraOffset());
drawingContext.DrawRectangle(null, new Pen(Brushes.Gray, 1.0), new Rect(pt_01, pt_02));
}
