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Diffstat (limited to 'nx-X11/extras/ogl-sample/main/doc/man/manglu/standard/unproject4.gl')
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diff --git a/nx-X11/extras/ogl-sample/main/doc/man/manglu/standard/unproject4.gl b/nx-X11/extras/ogl-sample/main/doc/man/manglu/standard/unproject4.gl deleted file mode 100644 index 37faf217d..000000000 --- a/nx-X11/extras/ogl-sample/main/doc/man/manglu/standard/unproject4.gl +++ /dev/null @@ -1,102 +0,0 @@ -_C_ License Applicability. Except to the extent portions of this file are -_C_ made subject to an alternative license as permitted in the SGI Free -_C_ Software License B, Version 1.1 (the "License"), the contents of this -_C_ file are subject only to the provisions of the License. You may not use -_C_ this file except in compliance with the License. You may obtain a copy -_C_ of the License at Silicon Graphics, Inc., attn: Legal Services, 1600 -_C_ Amphitheatre Parkway, Mountain View, CA 94043-1351, or at: -_C_ -_C_ http://oss.sgi.com/projects/FreeB -_C_ -_C_ Note that, as provided in the License, the Software is distributed on an -_C_ "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS -_C_ DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND -_C_ CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A -_C_ PARTICULAR PURPOSE, AND NON-INFRINGEMENT. -_C_ -_C_ Original Code. The Original Code is: OpenGL Sample Implementation, -_C_ Version 1.2.1, released January 26, 2000, developed by Silicon Graphics, -_C_ Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc. -_C_ Copyright in any portions created by third parties is as indicated -_C_ elsewhere herein. All Rights Reserved. -_C_ -_C_ Additional Notice Provisions: The application programming interfaces -_C_ established by SGI in conjunction with the Original Code are The -_C_ OpenGL(R) Graphics System: A Specification (Version 1.2.1), released -_C_ April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version -_C_ 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X -_C_ Window System(R) (Version 1.3), released October 19, 1998. This software -_C_ was created using the OpenGL(R) version 1.2.1 Sample Implementation -_C_ published by SGI, but has not been independently verified as being -_C_ compliant with the OpenGL(R) version 1.2.1 Specification. -_C_ -_C_ $Date: 2004/03/14 08:29:09 $ $Revision: 1.1.1.4 $ -_C_ The first character in this file must be an '_'! -_C_ Anything on a line after _C_ is ignored -_define(_filters,eqn)_C_ -_C_ eqn is automatically replaced with neqn for nroff -_header(UnProject4, map window and clip coordinates to object coordinates) -_names(UnProject4) -.EQ -delim $$ -.EN -.SH PARAMETERS -_phead(_param1 _param2 _param3) -Specify the window coordinates to be mapped. -_phead(_param4) -Specify the clip w coordinate to be mapped. -_phead(_param5) -Specifies the modelview matrix (as from a _glcmnd(GetDoublev) call). -_phead(_param6) -Specifies the projection matrix (as from a _glcmnd(GetDoublev) call). -_phead(_param7) -Specifies the viewport (as from a _glcmnd(GetIntegerv) call). -_phead(_param8 _param9) -Specifies the near and far planes (as from a _glcmnd(GetDoublev) call). -_phead(_param10 _param11 _param12 _param13) -Returns the computed object coordinates. -.SH DESCRIPTION -_cmnd maps the specified window coordinates _param1, _param2 and _param3 -and its clip w coordinate _param4 -into object -coordinates (_param10, _param11, _param12, _param13) -using _param5, _param6 and _param7. _param4 can be other than -1 as for vertices in _glcmnd(FeedbackBuffer) when data type -_const(4D_COLOR_TEXTURE) is returned. -This also handles the case -where the _param8 and _param9 planes are different from the default, -0 and 1, respectively. -A return -value of _const(TRUE) indicates success; a return value of _const(FALSE) -indicates failure. -.P -To compute the coordinates (_param10, _param11, _param12 and _param13), -_cmnd multiplies the normalized device coordinates by the inverse of -_param5*_param6 as follows: - -.P -.ce -.EQ -left ( down 70 {cpile { ~_eqnparam10 above ~_eqnparam11 above ~_eqnparam12 -above ~_eqnparam13}} ~~ right ) ~=~ INV(P M) -left ( down 140 {cpile { -{ {2(_eqnparam1 ~-~ _eqnparam7[0])} over {_eqnparam7[2]} ~-~ 1 } -above -{ {2(_eqnparam2 ~-~ _eqnparam7[1])} over {_eqnparam7[3]} ~-~ 1 } -above -{ {2(_eqnparam3 ~-~ _eqnparam8)} over {(_eqnparam9 ~-~ _eqnparam8)} ~-~ 1 } -above -_eqnparam4}} ~~ right ) -.EN -.sp -$INV()$ denotes matrix inversion. -.P -_cmnd is equivalent to _cmnd(UnProject) when _param4 is 1, _param8 is 0 and -_param9 is 1. -.SH NOTES -_cmnd is available only if the GLU version is 1.3 or greater. -.SH SEE ALSO -_glcmnd(Get), -_glcmnd(FeedbackBuffer), -_cmnd(Project), -_cmnd(UnProject) |