define a general tetrahedron
list; four points or planes that define a tetrahedron
The gtetrahedron(T,gv) function defines a tetrahedron from the four vertices or planes gv.
For more details on the tetrahedron T, use geom3d[detail].
The command with(geom3d,gtetrahedron) allows the use of the abbreviated form of this command.
name of the objectT1form of the objectgtetrahedron3dthe 4 vertices0,0,0,1,0,0,0,0,1,0,1,0the 4 faces0,0,0,1,0,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,0,0,0,1,0,1,0,1,0,0,0,0,1,0,1,0
_EnvXName ≔ 'x':_EnvYName ≔ 'y':_EnvZName ≔ 'z':
name of the objectT2form of the objectgtetrahedron3dthe 4 vertices0,0,1,0,1,0,1,0,0,0,0,0the 4 faces0,0,1,0,1,0,1,0,0,0,0,1,0,1,0,0,0,0,0,0,1,1,0,0,0,0,0,0,1,0,1,0,0,0,0,0
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