protected void DrawWall(Graphics G, RooWall Wall, Pen Pen, bool Infinite, Pen PenInfinite)
{
V2 p1p2;
// transform points to match world of pixeldrawing
float transx1 = (float)(Wall.P1.X - boxMin.X) * ZoomInv;
float transy1 = (float)(Wall.P1.Y - boxMin.Y) * ZoomInv;
float transx2 = (float)(Wall.P2.X - boxMin.X) * ZoomInv;
float transy2 = (float)(Wall.P2.Y - boxMin.Y) * ZoomInv;
// draw extensions of line
if (Infinite)
{
V2 p1 = new V2(transx1, transy1);
V2 p2 = new V2(transx2, transy2);
p1p2 = p2 - p1;
p2 += 1000f * p1p2;
p1 -= 1000f * p1p2;
G.DrawLine(PenInfinite, (float)p1.X, (float)p1.Y, (float)p2.X, (float)p2.Y);
}
// check if this is an issue line (almost horizontal or vertical, but not fully)
p1p2 = Wall.GetP1P2();
if (chkVertHortLines.Checked && p1p2.X != 0.0f && p1p2.Y != 0.0f)
{
Real m = (Real)(p1p2.Y / p1p2.X);
if ((m > -0.125f && m < 0.125f) ||
(m > 8.0f || m < -8.0f))
Pen = penRed2;
}
// draw line
G.DrawLine(Pen, transx1, transy1, transx2, transy2);
}
