/// <summary>
/// Get camera to plane distance
/// </summary>
/// <param name="point">Camera position</param>
/// <param name="plane">Plane definition</param>
/// <param name="map">Shared map data</param>
/// <returns>Plane distance</returns>
private static int GetDistance(Point3D point, Powerslave.Plane plane, Powerslave.Map map)
{
List <Powerslave.Vertex> vertices = plane.PolyVert.Select(vertex => map.Vertices[vertex]).ToList();
Powerslave.Vertex center = new Powerslave.Vertex()
{
X = (short)(vertices.Sum(vertex => vertex.X) / 4), Y = (short)(vertices.Sum(vertex => vertex.Y) / 4), Z = (short)(vertices.Sum(vertex => vertex.Z) / 4)
};
return((int)(Math.Pow(point.X - (center.X / 10.0f), 2) + Math.Pow(point.Y - (center.Z / 10.0f), 2) + Math.Pow(point.Z - (center.Y / 10.0f), 2)));
}
/// <summary>
/// Get triangles from quad
/// </summary>
/// <param name="quad">Quad polygon</param>
/// <returns>List of triangles</returns>
private static List <Powerslave.Vertex> GetTrianglesFromQuad(List <Powerslave.Vertex> quad)
{
List <List <Powerslave.Vertex> > triangles = new List <List <Powerslave.Vertex> >
{
new List <Powerslave.Vertex> {
quad[0], quad[1], quad[2]
},
new List <Powerslave.Vertex> {
quad[2], quad[3], quad[0]
}
};
// Remove zero-area triangles
for (int triangle = 0; triangle < triangles.Count; triangle++)
{
bool foundSame = false;
for (int index = 0; index < 3 && !foundSame; index++)
{
Powerslave.Vertex toCheck = triangles[triangle][index];
for (int compare = 0; compare < 3 && !foundSame; compare++)
{
Powerslave.Vertex toCompare = triangles[triangle][compare];
foundSame = index != compare && toCompare.X == toCheck.X && toCompare.Y == toCheck.Y && toCompare.Z == toCheck.Z;
}
}
if (foundSame)
{
triangles.RemoveAt(triangle);
triangle--;
}
}
return(triangles.SelectMany(triangle => triangle).ToList());
}
