private void DrawGridLine(Graphics canvas, DistortionHelper distorter, IImageToViewportTransformer transformer, Pen penLine, PointF a, PointF b)
{
if (distorter != null && distorter.Initialized)
{
List <PointF> curve = distorter.DistortRectifiedLine(a, b);
List <Point> transformed = transformer.Transform(curve);
canvas.DrawCurve(penLine, transformed.ToArray());
}
else
{
PointF p1 = transformer.Transform(a);
PointF p2 = transformer.Transform(b);
canvas.DrawLine(penLine, p1, p2);
}
}
private bool IsPointOnRectifiedLine(PointF p, PointF a, PointF b, DistortionHelper distorter, IImageToViewportTransformer transformer)
{
if (a == b)
{
return(false);
}
using (GraphicsPath path = new GraphicsPath())
{
if (distorter != null && distorter.Initialized)
{
List <PointF> curve = distorter.DistortRectifiedLine(a, b);
path.AddCurve(curve.ToArray());
}
else
{
path.AddLine(a, b);
}
return(HitTester.HitTest(path, p, 1, false, transformer));
}
}
