public void Draw(Graphics gr, double distance, Face whichFace, Point3D lightSource)
{
Polygon2D polyProjected = Projection(distance);
if (polyProjected != null)
{
if (polyProjected.Face != whichFace)
{
return;
}
Color tempColor = (whichFace == Face.front) ? frontColor : backColor;
int reflectivity = Reflectivity(lightSource);
int alpha = (whichFace == Face.front) ? alpha = reflectivity : 255 - reflectivity;
alpha = 255;
Brush brush = new SolidBrush(Color.FromArgb(alpha, tempColor));
double z = 0;
foreach (Point3D p in vertices)
{
if (p.Z > z)
{
z = p.Z;
}
}
if (polyProjected.IsInScreen(clientSize) && z < distance)
{
//polyProjected.Fill(gr, Brushes.Black);
if (this.frontColor != Color.Transparent)
{
polyProjected.Fill(gr, brush);
}
polyProjected.Draw(gr, Pens.Gray);
}
}
}
/// <summary>
/// FIll the polygon on the display device
/// </summary>
/// <param name="gr"></param>
/// <param name="distance"></param>
/// <param name="whichFace">The face which is to be drawn</param>
public void Fill(Graphics gr, double distance, Face whichFace, Point3D lightSrc)
{
Polygon2D poly2D = ToPolygon2D(distance);
Face face = poly2D.Face;
if (face != whichFace)
{
return;
}
// define new burshes based on the reflectitvity and the face being drawn
Brush brush = new SolidBrush(Color.White);
if (poly2D.Face == Face.foreground)
{
brush = new SolidBrush(Color.FromArgb(Reflectivity(lightSrc), fgColor));
}
else if (poly2D.Face == Face.background)
{
brush = new SolidBrush(Color.FromArgb(255 - Reflectivity(lightSrc), bgColor));
}
poly2D.Fill(gr, Brushes.Black);
poly2D.Fill(gr, brush);
}
public bool Contains(Point2D p, double distance)
{
Polygon2D poly2D = ToPolygon2D(distance);
return(poly2D.Contains((int)p.X, (int)p.Y));
}
