Constructors and Setting Functions

void Tetrahedron (void)

Default constructor

Creates an empty Tetrahedron.

void Tetrahedron (const Point& p, const real diameter_of_triangle, [real angle_x = 0, [real angle_y = 0, [real angle_z = 0]]])

Constructor

Creates a Tetrahedron with its center at the origin. The faces have enclosing circles of diameter diameter_of_triangle. If any of angle_x, angle_y, or angle_z is non-zero, the Tetrahedron is rotated by the amounts specified around the corresponding axes. Finally, if p is not the origin, the Tetrahedron is shifted such that center comes to lie at p. The center of a Tetrahedron is the intersection of the line segments connecting the vertices with the centers of the opposite faces. Tetrahedron t(origin, 3); t.draw(); Fig. 187. Point P(1, 0, 1); Tetrahedron t(P, 2.75, 30, 32.5, 20); t.draw(); Fig. 188.

void set (const Point& p, const real diameter_of_triangle, [real angle_x = 0, [real angle_y = 0, [real angle_z = 0]]])

Setting function

Corresponds to the constructor above.