objz(1) [osf1 man page]

objZ(1) 						      General Commands Manual							   objZ(1)

NAME

       objZ - Compression utility

SYNOPSIS

       objZ [options] input

OPTIONS

       The  objZ  command  accepts  the following options: Decompress input.  The input file must be in ALPHAMAGICZ compressed object file format.
       Print the argument count, input length, and output length.

DESCRIPTION

       The objZ command takes a regular, read/write file in ALPHAMAGIC format as input and converts it to ALPHAMAGICZ compressed format. The  com-
       pressed output file replaces the input file.

       When  the  -u option is specified, the objZ command takes as input a file in ALPHAMAGICZ format (that is, a file previously produced by the
       objZ command or by the as command with the -compress option) and converts it to ALPHAMAGIC format.

ERRORS

       When compressing an input file, the objZ command generates errors if the file is not a regular file (for example,  a  directory	or  device
       special file), if the file is read-only, if its header cannot be read, if the file is not in ALPHAMAGIC format, or if a compression failure
       occurs.

       When decompressing an input file, the objZ command generates errors if the file is not a regular file, if the file  is  read-only,  if  the
       file is not in ALPHAMAGICZ format, or if a decompression failure occurs.

SEE ALSO

       as(1), cc(1), ld(1), at(1), filehdr(4)

       Programmer's Guide

																	   objZ(1)

GLUUNPROJECT(3G)														  GLUUNPROJECT(3G)

NAME

       gluUnProject - map window coordinates to object coordinates

C SPECIFICATION

       GLint gluUnProject( GLdouble winX,
			   GLdouble winY,
			   GLdouble winZ,
			   const GLdouble *model,
			   const GLdouble *proj,
			   const GLint *view,
			   GLdouble* objX,
			   GLdouble* objY,
			   GLdouble* objZ )

PARAMETERS

       winX, winY, winZ
		       Specify the window coordinates to be mapped.

       model	       Specifies the modelview matrix (as from a glGetDoublev call).

       proj	       Specifies the projection matrix (as from a glGetDoublev call).

       view	       Specifies the viewport (as from a glGetIntegerv call).

       objX, objY, objZ
		       Returns the computed object coordinates.

DESCRIPTION

       gluUnProject  maps  the	specified  window  coordinates into object coordinates using model, proj, and view.  The result is stored in objX,
       objY, and objZ. A return value of GL_TRUE indicates success; a return value of GL_FALSE indicates failure.

       To compute the coordinates (objX, objY, and objZ), gluUnProject multiplies the normalized device coordinates by the inverse  of	model*proj
       as follows:

				2(winX - view[0])
				-----------------  - 1
				     view[2]

	   objX 		2(winY - view[1])
	   objY   =  INV(PM)	-----------------  - 1
	   objZ 		     view[3]
	    W
				     2(winZ)	   - 1

					1

       INV() denotes matrix inversion.	W is an unused variable, included for consistent matrix notation.

SEE ALSO

       glGet, gluProject

																  GLUUNPROJECT(3G)