public override void DrawBegin(Graphics3D graphics)
{
// sanity check
if (_height <= 1.0E-3)
{
return;
}
Face[] faces = Faces;
if (Vector3D.DotProduct(faces[0].Normal, graphics.ViewDirection) >= 0.0)
{
for (int i = 0; i < 4; ++i)
{
graphics.AddFaceBackground(faces[i]);
}
}
if (Vector3D.DotProduct(faces[4].Normal, graphics.ViewDirection) >= 0.0)
{
for (int i = 4; i < 8; ++i)
{
graphics.AddFaceBackground(faces[i]);
}
}
if (Math.Abs(Vector3D.DotProduct(faces[0].Normal, graphics.ViewDirection)) < 1.0E-3)
{
graphics.AddFaceBackground(faces[3]);
}
if (Math.Abs(Vector3D.DotProduct(faces[4].Normal, graphics.ViewDirection)) < 1.0E-3)
{
graphics.AddFaceBackground(faces[7]);
}
}
public override void DrawBegin(Graphics3D graphics)
{
Face[] faces = Faces;
if (Vector3D.DotProduct(faces[0].Normal, graphics.ViewDirection) >= 0.0)
{
for (int i = 0; i < 4; ++i)
{
graphics.AddFaceBackground(faces[i]);
}
}
if (Vector3D.DotProduct(faces[4].Normal, graphics.ViewDirection) >= 0.0)
{
for (int i = 4; i < 8; ++i)
{
graphics.AddFaceBackground(faces[i]);
}
}
}
public override void DrawBegin(Graphics3D graphics)
{
Face[] faces = Faces;
if (Vector3D.DotProduct(faces[0].Normal, graphics.ViewDirection) >= 0.0)
{
for (int i = 0; i < 4; ++i)
graphics.AddFaceBackground(faces[i]);
}
if (Vector3D.DotProduct(faces[4].Normal, graphics.ViewDirection) >= 0.0)
{
for (int i = 4; i < 8; ++i)
graphics.AddFaceBackground(faces[i]);
}
}