rt::element* triangle = new rt::triangle(
vec_new((scal_t)x1, (scal_t)y1, (scal_t)z1),
vec_new((scal_t)x2, (scal_t)y2, (scal_t)z2),
rt::element* triangle = new rt::triangle(
vec_new((scal_t)x1, (scal_t)y1, (scal_t)z1),
vec_new((scal_t)x2, (scal_t)y2, (scal_t)z2),