#
# This file existance is justified to demonstrate loops on free form trans.:
#

save_mat = view_mat;
view_mat = view_mat * scale(vector(0.7,	0.7, 0.7));

cbzr = cbezier( list( ctlpt( P3, 1.0, 0.0, 0.0, 0.0 ),
	              ctlpt( P3, 0.707, 0.707, 0.0, 0.0 ),
	              ctlpt( P3, 1.0, 1.0, 1.0, 0.0 ) ) );
sbzr = sbezier( list ( list( ctlpt( E3, 0.0, 0.0, 0.5 ),
		             ctlpt( E3, 0.0, 0.5, -1.0 ),
		             ctlpt( E3, 0.0, 1.0, 0.5 ) ),
	               list( ctlpt( E3, 0.5, 0.0, -0.5 ),
		             ctlpt( E3, 0.5, 0.5, 1.0 ),
	        	     ctlpt( E3, 0.5, 1.0, -0.5 ) ),
	               list( ctlpt( E3, 1.0, 0.0, 0.5 ),
		             ctlpt( E3, 1.0, 0.5, -1.0 ),
	        	     ctlpt( E3, 1.0, 1.0, 0.5 ) ) ) );

rot10x = rotx( 10 );
rot10y = roty( 10 );
rot10z = rotz( 10 );

interact( list( axes, cbzr, sbzr ) );

#
# Rotate around	the X axes:
#

for ( a = 1, 1, 36,
	cbzr = cbzr * rot10x:
        view( list( cbzr, axes ), on )
    );


#
# Rotate around	the Y axes:
#

for ( a = 1, 1, 36,
	sbzr = sbzr * rot10y:
        view( list( sbzr, axes ), on )
    );


#
# Rotate around	the Z axes:
#

for ( a = 1, 1, 36,
	cbzr = cbzr * rot10z:
        view( list( cbzr, axes ), on )
    );
free( a );

view_mat = save_mat;

free( rot10x );
free( rot10y );
free( rot10z );
free( cbzr );
free( sbzr );