MyGame.Terrain.createIndices C# (CSharp) Method

        private void createIndices()
        {
            indices = new int[nIndices];
            int i = 0;

            // For each cell
            for (int x = 0; x < width - 1; x++)
                for (int z = 0; z < length - 1; z++)
                {
                    // Find the indices of the corners
                    int upperLeft = z * width + x;
                    int upperRight = upperLeft + 1;
                    int lowerLeft = upperLeft + width;
                    int lowerRight = lowerLeft + 1;

                    // Specify upper triangle
                    indices[i++] = upperLeft;
                    indices[i++] = upperRight;
                    indices[i++] = lowerLeft;

                    // Specify lower triangle
                    indices[i++] = lowerLeft;
                    indices[i++] = upperRight;
                    indices[i++] = lowerRight;
                }
        }