PdfSharp.Drawing.XGraphics.ResetClip C# (CSharp) Method

    public void ResetClip()
    {
      throw new InvalidOperationException("ResetClip is obsolete. Use Save/Restore instead.");
      //      if (this.drawGraphics)
      //      {
      //#if GDI
      //        this.gfx.ResetClip();
      //#endif
      //#if WPF
      //        //this.gfx.Transform = (Matrix)this.defaultViewMatrix;
      //#endif
      //      }

      //      if (this.renderer != null)
      //        this.renderer.ResetClip();
    }

    /// <summary>
    /// Demonstrates the use of XGraphics.Transform.
    /// </summary>
    public override void RenderPage(XGraphics gfx)
    {
      XGraphicsState state1, state2;
      base.RenderPage(gfx);

      state1 = gfx.Save();  // Level 1
      gfx.TranslateTransform(20, 50);
      gfx.DrawLine(XPens.Blue, 0, 0, 10, 10);
      gfx.Restore(state1);

      state1 = gfx.Save();  // Level 2
      gfx.TranslateTransform(220, 50);
      gfx.DrawLine(XPens.Blue, 0, 0, 10, 10);
      XGraphicsPath clipPath = new XGraphicsPath();
      clipPath.AddPie(0, 10, 150, 100, -50, 100);
      gfx.IntersectClip(clipPath);
      gfx.DrawRectangle(XBrushes.LightYellow, 0, 0, 1000, 1000);

      state2 = gfx.Save();  // Level 3
      gfx.ScaleTransform(10);
      gfx.DrawLine(XPens.Red, 1, 1, 10, 10);

      //gfx.ResetClip();
      gfx.Restore(state2);  // Level 2

      gfx.DrawLine(XPens.Red, 1, 1, 10, 10);

      gfx.Restore(state1);

#if true_

      gfx.SetClip(new XRect(20, 20, 300, 500));
      gfx.DrawRectangle(XBrushes.Yellow, 0, 0, gfx.PageSize.Width, gfx.PageSize.Height);

      gfx.SetClip(new XRect(100, 200, 300, 500), XCombineMode.Intersect);
      gfx.DrawRectangle(XBrushes.LightBlue, 0, 0, gfx.PageSize.Width, gfx.PageSize.Height);

      gfx.DrawLine(XPens.MediumSlateBlue, 0, 0, 150, 200);
      gfx.DrawPolygon(properties.Pen1.Pen, GetPentagram(75, new PointF(150, 200)));


      Matrix matrix = new Matrix();
      //matrix.Scale(2f, 1.5f);
      //matrix.Translate(-200, -400);
      //matrix.Rotate(45);
      //matrix.Translate(200, 400);
      //gfx.Transform = matrix;
      //gfx.TranslateTransform(50, 30);

#if true
      gfx.TranslateTransform(30, 40, XMatrixOrder.Prepend);
      gfx.ScaleTransform(2.0f, 2.0f, XMatrixOrder.Prepend);
      gfx.RotateTransform(15, XMatrixOrder.Prepend);
#else
      gfx.TranslateTransform(30, 40, XMatrixOrder.Append);
      gfx.ScaleTransform(2.0f, 2.0f, XMatrixOrder.Append);
      gfx.RotateTransform(15, XMatrixOrder.Append);
#endif
      bool id = matrix.IsIdentity;
      matrix.Scale(2.0f, 2.0f, MatrixOrder.Prepend);
      //matrix.Translate(30, -50);
      matrix.Rotate(15, MatrixOrder.Prepend);
      Matrix mtx = gfx.Transform.ToMatrix();
      //gfx.Transform = matrix;

      gfx.DrawLine(XPens.MediumSlateBlue, 0, 0, 150, 200);
      gfx.DrawPolygon(properties.Pen2.Pen, GetPentagram(75, new PointF(150, 200)));

      gfx.ResetClip();

      gfx.DrawLine(XPens.Red, 0, 0, 1000, 1000);

      gfx.DrawPolygon(XPens.SandyBrown, GetPentagram(75, new PointF(150, 200)));
#endif
    }