Arena.CylinderSection.Triangulate C# (CSharp) Метод

        protected void Triangulate()
        {
            float stackHeight = Length / Stacks;
            float radianIncr = MathUtils.DegreesToRadians(fArcDegrees / Slices);

            // Construct the collections we'll use
            List<Vector3f> vertices = new List<Vector3f>();
            List<Vector3f> normals = new List<Vector3f>();
            List<int> indices = new List<int>();
            List<TextureCoordinates> textures = new List<TextureCoordinates>();


            // Length of the cylinder: Fill in the collections.
            for (int stack = 0; stack <= Stacks; stack++)
            {
                double y = Length - stack * stackHeight;
                int top =  (stack + 0) * (Slices + 1);
                int bot =  (stack + 1) * (Slices + 1);
                double theta = MathUtils.DegreesToRadians(180 - ((float)fArcDegrees / 2));
                
                for (int slice = 0; slice <= Slices; slice++)
                {
                    double x = Radius * Math.Sin(theta);
                    double z = Radius * Math.Cos(theta) + Radius;
                    vertices.Add(new Vector3f((float)x, (float)y, (float)z));

                    float txCoord = fTextureShard.Right - fTextureShard.Width * (float)slice/Slices;
                    float tyCoord = 1.0f - (fTextureShard.Height * (float)stack / Stacks);
                    textures.Add(new TextureCoordinates(txCoord, tyCoord));
                    normals.Add(new Vector3f((float)x, (float)y, (float)-z));

                    if (stack < Stacks && slice < Slices)
                    {
                        indices.Add(top + slice);
                        indices.Add(bot + slice);
                        indices.Add(top + slice + 1);

                        indices.Add(top + slice + 1);
                        indices.Add(bot + slice);
                        indices.Add(bot + slice + 1);
                    }

                    theta += radianIncr;
                }
            }


            this.Vertices = vertices.ToArray();
            this.Normals = normals.ToArray();
            this.Indices = indices.ToArray();
            this.TexCoords = textures.ToArray();
        }
    }