GraphFacetRender.cpp

            _coo_gl_arpointer* tri = triangles_pointer;
            _coo_gl_arpointer* norm = normals_pointer;
            float* vert = new float[tri_count * 3 * 6];


            for (unsigned i = 0; i < tri_count; ++i)
            {
                unsigned ipos = i * 9;
                std::copy(norm + ipos, norm + ipos + 3, vert + ipos * 2);
                std::copy(tri + ipos, tri + ipos + 3, vert + ipos * 2 + 3);

                std::copy(norm + ipos + 3, norm + ipos + 6, vert + ipos * 2 + 6);
                std::copy(tri + ipos + 3, tri + ipos + 6, vert + ipos * 2 + 9);

                std::copy(norm + ipos + 6, norm + ipos + 9, vert + ipos * 2 + 12);
                std::copy(tri + ipos + 6, tri + ipos + 9, vert + ipos * 2 + 15);
            }


            int facesCount, stride, * sharpInd;
            std::vector<float> points;
            StlRend srend;
            srend.create(tri_count, vert);
            srend.getMesh(90, facesCount, stride, points, sharpInd);
            glEnableClientState(GL_VERTEX_ARRAY);
            glEnableClientState(GL_NORMAL_ARRAY);
            glDisableClientState(GL_COLOR_ARRAY);
            glVertexPointer(3, GL_FLOAT, stride * sizeof(points[0]), points.data() + 3);
            glNormalPointer(GL_FLOAT, stride * sizeof(points[0]), points.data());

            glDrawArrays(GL_TRIANGLES, 0, facesCount * 3);