public void InitialiseDrawing()
{
if (Drawing == null)
{
return;
}
m_axes = new CoordinateAxes();
AddVisualChild(m_axes);
AddLogicalChild(m_axes);
GridLayerVisual = new GridLayerVisual(Drawing);
AddVisualChild((Visual)GridLayerVisual);
AddLogicalChild((Visual)GridLayerVisual);
CursorVisual = new CADCursorVisual(Drawing);
AddVisualChild((Visual)CursorVisual);
AddLogicalChild((Visual)CursorVisual);
SelectionBoxVisual = new SelectBoxVisual(Drawing);
AddVisual(SelectionBoxVisual);
//Set Drawing properties from Canvas
Drawing.Canvas = this;
Drawing.AxesColor = CanvasPalette.ConvertToCAD(AxesColor);
Drawing.AxesLength = AxesLength;
Drawing.AxesTextSize = AxesTextSize;
Drawing.AxesThickness = AxesThickness;
Drawing.Scale = Scale;
Drawing.Axes = m_axes;
Drawing.GridLayer.Color = CanvasPalette.ConvertToCAD(GridColor);
_initialiseDrawing = true;
}
public void Draw(IDrawing drawing)
{
if (drawing == null)
{
return;
}
using (DrawingContext thisDC = this.RenderOpen())
{
Brush br = new SolidColorBrush(CanvasPalette.WPFColor(drawing.AxesColor));
Pen _pen = new Pen(br, drawing.AxesThickness);
//
// Draw arrows
double rArrLen = drawing.AxesLength * 0.15;
double rArrWidth = drawing.AxesLength * 0.03;
// Dont apply scaling on coordinate axes.
// They must have constant size.
Point zeroPnt = new Point(0.0, 0.0);
zeroPnt = drawing.ModelToCanvas(zeroPnt.AsCAD(), false).AsWPF();
Point xPnt = new Point(drawing.AxesLength - rArrLen, 0.0);
xPnt = drawing.ModelToCanvas(xPnt.AsCAD(), false).AsWPF();
Point yPnt = new Point(0.0, drawing.AxesLength - rArrLen);
yPnt = drawing.ModelToCanvas(yPnt.AsCAD(), false).AsWPF();
thisDC.DrawLine(_pen, zeroPnt, xPnt);
thisDC.DrawLine(_pen, zeroPnt, yPnt);
// X arrow
PathFigure arrow_X = new PathFigure();
arrow_X.IsClosed = true;
Point xPnt0 = new Point(drawing.AxesLength, 0);
xPnt0 = drawing.ModelToCanvas(xPnt0.AsCAD(), false).AsWPF();
arrow_X.StartPoint = xPnt0;
Point xPnt1 = new Point(drawing.AxesLength - rArrLen, -rArrWidth);
xPnt1 = drawing.ModelToCanvas(xPnt1.AsCAD(), false).AsWPF();
arrow_X.Segments.Add(new LineSegment(xPnt1, true));
Point xPnt2 = new Point(drawing.AxesLength - rArrLen, rArrWidth);
xPnt2 = drawing.ModelToCanvas(xPnt2.AsCAD(), false).AsWPF();
arrow_X.Segments.Add(new LineSegment(xPnt2, true));
// Y arrow
PathFigure arrow_Y = new PathFigure();
arrow_Y.IsClosed = true;
Point yPnt0 = new Point(0, drawing.AxesLength);
yPnt0 = drawing.ModelToCanvas(yPnt0.AsCAD(), false).AsWPF();
arrow_Y.StartPoint = yPnt0;
Point yPnt1 = new Point(-rArrWidth, drawing.AxesLength - rArrLen);
yPnt1 = drawing.ModelToCanvas(yPnt1.AsCAD(), false).AsWPF();
arrow_Y.Segments.Add(new LineSegment(yPnt1, true));
Point yPnt2 = new Point(rArrWidth, drawing.AxesLength - rArrLen);
yPnt2 = drawing.ModelToCanvas(yPnt2.AsCAD(), false).AsWPF();
arrow_Y.Segments.Add(new LineSegment(yPnt2, true));
PathGeometry pg = new PathGeometry(new[] { arrow_X, arrow_Y });
thisDC.DrawGeometry(br, _pen, pg);
//
// Draw text
FontFamily ff = new FontFamily("Arial");
Typeface tf = new Typeface(ff, FontStyles.Normal, FontWeights.Normal, FontStretches.Normal);
FormattedText text_X = new FormattedText("X", CultureInfo.CurrentCulture, FlowDirection.LeftToRight, tf, drawing.AxesTextSize, br);
// Positive Y direction because default WPF axes have Y directed to bottom.
// Here we draw in default WPF system.
// Read coom in SimpleCAD.ModelToCanvas().
thisDC.DrawText(text_X, xPnt + new Vector(0, 3));
FormattedText text_Y = new FormattedText("Y", CultureInfo.CurrentCulture, FlowDirection.LeftToRight, tf, drawing.AxesTextSize, br);
// Negative Y direction because default WPF axes have Y directed to bottom.
// Here we draw in default WPF system.
// Read coom in SimpleCAD.ModelToCanvas().
thisDC.DrawText(text_Y, yPnt + new Vector(-drawing.AxesTextSize, -drawing.AxesTextSize));
}
}
