Exemple #1
0
        public List <Tetra> Divide(int n = 0)
        {
            if (n == 0)
            {
                return(new List <Tetra>(new Tetra[] { this }));
            }
            else
            {
                Vector3 halfa = (PointApex + PointA) / 2.0f;
                Vector3 halfb = (PointApex + PointB) / 2.0f;
                Vector3 halfc = (PointApex + PointC) / 2.0f;

                Vector3 halfab = (PointA + PointB) / 2.0f;
                Vector3 halfbc = (PointB + PointC) / 2.0f;
                Vector3 halfac = (PointA + PointC) / 2.0f;

                Tetra t1 = new Tetra(PointApex, halfa, halfb, halfc);
                Tetra t2 = new Tetra(halfa, PointA, halfab, halfac);
                Tetra t3 = new Tetra(halfb, halfab, PointB, halfbc);
                Tetra t4 = new Tetra(halfc, halfac, halfbc, PointC);

                List <Tetra> output = new List <Tetra>();

                output.AddRange(t1.Divide(n - 1));
                output.AddRange(t2.Divide(n - 1));
                output.AddRange(t3.Divide(n - 1));
                output.AddRange(t4.Divide(n - 1));

                return(output);
            }
        }
Exemple #2
0
        public Sierpinski(int numSubdivisions = 1)
        {
            int NumTris = (int)Math.Pow(4, numSubdivisions + 1);

            VertCount      = NumTris;
            ColorDataCount = NumTris;
            IndiceCount    = 3 * NumTris;

            Tetra twhole = new Tetra(
                new Vector3(0.0f, 0.0f, 1.0f),
                new Vector3(0.943f, 0.0f, -0.333f),
                new Vector3(-0.471f, 0.816f, -0.333f),
                new Vector3(-0.471f, -0.816f, -0.333f));

            List <Tetra> allTets = twhole.Divide(numSubdivisions);

            int offset = 0;

            foreach (Tetra t in allTets)
            {
                verts.AddRange(t.GetVerts());
                indices.AddRange(t.GetIndices(offset * 4));
                colors.AddRange(t.GetColorData());
                offset++;
            }
        }