void DrawingPanel_Paint(object sender, PaintEventArgs e)
{
e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
Matrix4 mtx = Matrix4.CreateTranslation(-m_SVGPathBounds.Center.X, -m_SVGPathBounds.Center.Y);
mtx.Scale(m_Scale, m_Scale, MatrixOrder.Append);
mtx.Translate(m_x, m_y, MatrixOrder.Append);
ITransform transform = null;
if (rbBilinear.IsChecked)
{
Bilinear tr = new Bilinear(
m_SVGPathScaledBounds.Left, m_SVGPathScaledBounds.Top,
m_SVGPathScaledBounds.Right, m_SVGPathScaledBounds.Bottom, m_PolygonElement.Polygon);
if (tr.IsValid)
{
transform = tr;
}
}
else
{
Perspective tr = new Perspective(
m_SVGPathScaledBounds.Left, m_SVGPathScaledBounds.Top,
m_SVGPathScaledBounds.Right, m_SVGPathScaledBounds.Bottom, m_PolygonElement.Polygon);
if (tr.IsValid() &&
Perspective.IsConvex(m_PolygonElement.Polygon))
{
transform = tr;
}
}
//
GeometryTransformer transformer = null;
if (transform != null)
{
transformer = new GeometryTransformer(transform);
}
// Render transformed SVG
m_SVGPath.Render(e.Graphics, mtx, transformer);
// Render transformed ellipse
Point center = m_SVGPathScaledBounds.Center;
EllipseGeometry FilledEllipse = new EllipseGeometry(center.X, center.Y, m_SVGPathScaledBounds.Width / 2, m_SVGPathScaledBounds.Height / 2, 200);
GeometryStroke EllipseOutline = new GeometryStroke(FilledEllipse);
EllipseOutline.Width = 3.0;
Geometry TransformedFilledEllipse = FilledEllipse;
Geometry TransformedEllipesOutline = EllipseOutline;
if (transform != null)
{
TransformedFilledEllipse = new GeometryTransformer(FilledEllipse, transform);
TransformedEllipesOutline = new GeometryTransformer(EllipseOutline, transform);
}
SmoothingMode saveSmoothingMode = e.Graphics.SmoothingMode;
e.Graphics.SmoothingMode = SmoothingMode.None;
{
e.Graphics.FillGeometry(m_EllipseBrush, TransformedFilledEllipse);
}
e.Graphics.SmoothingMode = saveSmoothingMode;
e.Graphics.FillGeometry(m_EllipsePen.Color, TransformedEllipesOutline);
}
