//=============================================================================
public Point GripLocalPoint()
{
if (m_plot != null && m_owner != null && m_gripIndex >= 0)
{
List <Point> pnts = m_owner.GetGripPoints();
if (pnts != null && m_gripIndex < pnts.Count)
{
return(m_plot.GetLocalPoint(pnts[m_gripIndex]));
}
}
return(new Point());
}
public void Draw()
{
if (m_owner == null)
{
return;
}
using (DrawingContext thisDC = this.RenderOpen())
{
Brush br = new SolidColorBrush(m_owner.AxesColor);
Pen _pen = new Pen(br, m_owner.AxesThickness);
//
// Draw arrows
double rArrLen = m_owner.AxesLength * 0.15;
double rArrWidth = m_owner.AxesLength * 0.03;
// Dont apply scaling on coordinate axes.
// They must have constant size.
Point zeroPnt = new Point(0.0, 0.0);
zeroPnt = m_owner.GetLocalPoint(zeroPnt, false);
Point xPnt = new Point(m_owner.AxesLength - rArrLen, 0.0);
xPnt = m_owner.GetLocalPoint(xPnt, false);
Point yPnt = new Point(0.0, m_owner.AxesLength - rArrLen);
yPnt = m_owner.GetLocalPoint(yPnt, false);
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(m_owner.AxesLength, 0);
xPnt0 = m_owner.GetLocalPoint(xPnt0, false);
arrow_X.StartPoint = xPnt0;
Point xPnt1 = new Point(m_owner.AxesLength - rArrLen, -rArrWidth);
xPnt1 = m_owner.GetLocalPoint(xPnt1, false);
arrow_X.Segments.Add(new LineSegment(xPnt1, true));
Point xPnt2 = new Point(m_owner.AxesLength - rArrLen, rArrWidth);
xPnt2 = m_owner.GetLocalPoint(xPnt2, false);
arrow_X.Segments.Add(new LineSegment(xPnt2, true));
// Y arrow
PathFigure arrow_Y = new PathFigure();
arrow_Y.IsClosed = true;
Point yPnt0 = new Point(0, m_owner.AxesLength);
yPnt0 = m_owner.GetLocalPoint(yPnt0, false);
arrow_Y.StartPoint = yPnt0;
Point yPnt1 = new Point(-rArrWidth, m_owner.AxesLength - rArrLen);
yPnt1 = m_owner.GetLocalPoint(yPnt1, false);
arrow_Y.Segments.Add(new LineSegment(yPnt1, true));
Point yPnt2 = new Point(rArrWidth, m_owner.AxesLength - rArrLen);
yPnt2 = m_owner.GetLocalPoint(yPnt2, false);
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, m_owner.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.GetLocalPoint().
thisDC.DrawText(text_X, xPnt + new Vector(0, 3));
FormattedText text_Y = new FormattedText("Y", CultureInfo.CurrentCulture, FlowDirection.LeftToRight, tf, m_owner.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.GetLocalPoint().
thisDC.DrawText(text_Y, yPnt + new Vector(-m_owner.AxesTextSize, -m_owner.AxesTextSize));
}
}
