Reactor.BillboardParticleEmitter.LoadParticles C# (CSharp) Method

        public void LoadParticles()
        {
            particleArray = new BillboardParticleElement[partCount * 4];

            for (int p = 0; p < partCount; p += 4)
            {
                for (int thisP = 0; thisP < 4; thisP++)
                {
                    int currentParticle = p + thisP;

                    particleArray[currentParticle] = new BillboardParticleElement();
                    particleArray[currentParticle].Position = myPosition;
                    particleArray[currentParticle].Color = particleColor;
                    particleArray[currentParticle].Data = new Vector4(1f, 1f, 0f, 0f);
                    switch (thisP)
                    {
                        case 0:
                            particleArray[currentParticle].TextureCoordinate = Vector2.Zero;
                            break;
                        case 1:
                            particleArray[currentParticle].TextureCoordinate = new Vector2(1, 0);
                            break;
                        case 2:
                            particleArray[currentParticle].TextureCoordinate = new Vector2(0, 1);
                            break;
                        case 3:
                            particleArray[currentParticle].TextureCoordinate = Vector2.One;
                            break;
                    }
                }
            }

            short[] indices = new short[6 * partCount];

            for (int part = 0; part < partCount; part++)
            {
                int off = part * 6;
                int offVal = part * 4;

                indices[off + 0] = (short)(0 + offVal);
                indices[off + 1] = (short)(1 + offVal);
                indices[off + 2] = (short)(2 + offVal);

                indices[off + 3] = (short)(1 + offVal);
                indices[off + 4] = (short)(3 + offVal);
                indices[off + 5] = (short)(2 + offVal);
            }

            ib = new DynamicIndexBuffer(REngine.Instance._game.GraphicsDevice, typeof(short), 6 * partCount, BufferUsage.WriteOnly);
            ib.SetData(indices);
        }