NAME

patch, rpatch − draws a surface patch

SPECIFICATION

C
patch(geomx, geomy, geomz)
Matrix geomx, geomy, geomz;
rpatch(geomx, geomy, geomz, geomw)
Matrix geomx, geomy, geomz, geomw;

FORTRAN
subroutine patch(geomx, geomy, geomz)
real geomx(4,4), geomy(4,4), geomz(4,4)
subroutine rpatch(geomx, geomy, geomz, geomw)
real geomx(4,4), geomy(4,4), geomz(4,4), geomw(4,4)

Pascal
procedure patch(geomx, geomy, geomz: Matrix);
procedure rpatch(geomx, geomy, geomz, geomw: Matrix);

DESCRIPTION

patch and rpatch draw a surface patch using the current patchbasis, patchprecision, and patchcurves.  rpatch draws a rational surface patch.  The control points geomx, geomy, and geomz determine the shape of the patch.  geomw specifies the rational component of the patch to rpatch. 

SEE ALSO

patchbasis, patchprecision, patchcurves, defbasis IRIS Graphics Programming, Section 11.3, Drawing Surfaces

Version 2.5  —  April 22, 1987