#
# Triangular confusing shapes...
#
#				Gershon Elber, January 1995.
#

Wid = 0.5;
Frame = ( ctlpt( E3, 0, -1, -Wid ) +
	  ctlpt( E3, 0, -1,  Wid ) +
	  ctlpt( E3, 0,  1,  Wid ) +
	  ctlpt( E3, 0,  1, -Wid ) +
	  ctlpt( E3, 0, -1, -Wid ) ) * sc( 0.2 ) * ty( 0.8 );
Frame1 = Frame;
Frame2 = Frame * rz( 120 );
Frame3 = Frame * rz( 240 );
Frame4 = Frame;
Tri1 = sFromCrvs( list( Frame1, Frame2, Frame3, frame4 ), 2, KV_OPEN );
interact( list( Tri1, axes ) );
free( Tri1 );

Wid = 0.5;
Frame1 = ( ctlpt( E3, 0, -1, -Wid ) +
	   ctlpt( E3, 0, -1,  Wid ) +
	   ctlpt( E3, 0,  1,  Wid ) +
	   ctlpt( E3, 0,  1, -Wid ) +
	   ctlpt( E3, 0, -1, -Wid ) ) * sc( 0.2 ) * ty( 0.8 );
Frame2 = ( ctlpt( E3, 0, -1,  Wid ) +
	   ctlpt( E3, 0,  1,  Wid ) +
	   ctlpt( E3, 0,  1, -Wid ) +
	   ctlpt( E3, 0, -1, -Wid ) +
	   ctlpt( E3, 0, -1,  Wid ) ) * sc( 0.2 ) * ty( 0.8 ) * rz( 120 );
Frame3 = ( ctlpt( E3, 0,  1,  Wid ) +
	   ctlpt( E3, 0,  1, -Wid ) +
	   ctlpt( E3, 0, -1, -Wid ) +
	   ctlpt( E3, 0, -1,  Wid ) +
	   ctlpt( E3, 0,  1,  Wid ) ) * sc( 0.2 ) * ty( 0.8 ) * rz( 240 );
Frame4 = ( ctlpt( E3, 0,  1, -Wid ) +
	   ctlpt( E3, 0, -1, -Wid ) +
	   ctlpt( E3, 0, -1,  Wid ) +
	   ctlpt( E3, 0,  1,  Wid ) +
	   ctlpt( E3, 0,  1, -Wid ) ) * sc( 0.2 ) * ty( 0.8 );
Tri2 = sFromCrvs( list( Frame1, Frame2, Frame3, frame4 ), 2, KV_OPEN );
interact( Tri2 );
save( "triang", Tri2 );
free( Tri2 );

free( Wid );
free( Frame );
free( Frame1 );
free( Frame2 );
free( Frame3 );
free( Frame4 );