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Diffstat (limited to 'nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/rotate.gl')
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diff --git a/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/rotate.gl b/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/rotate.gl new file mode 100644 index 000000000..5700a28e4 --- /dev/null +++ b/nx-X11/extras/ogl-sample/main/doc/man/mangl/standard/rotate.gl @@ -0,0 +1,114 @@ +_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_ 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(Rotate,multiply the current matrix by a rotation matrix) +_names(Rotate,[df]) +.EQ +delim $$ +.EN +.SH PARAMETERS +_phead(_param1) +Specifies the angle of rotation, in degrees. +_phead(_param2 _param3 _param4) +Specify the \f2x\fP, \f2y\fP, and \f2z\fP coordinates of a vector, respectively. +.SH DESCRIPTION +_cmnd produces a rotation of _param1 degrees around +the vector $(_eqnparam2, _eqnparam3, _eqnparam4)$. +The current matrix (see _cmnd(MatrixMode)) is multiplied by a rotation +matrix with the product +replacing the current matrix, as if _cmnd(MultMatrix) were called +with the following matrix as its argument: +.P +.ce +.EQ +left ( ~ down 20 matrix { + ccol { + _eqnparam2 sup 2 (1 ^-^ c)~+~ c above + _eqnparam3 _eqnparam2 (1 ^-^ c)~+~ _eqnparam4 s above + _eqnparam2 _eqnparam4 (1 ^-^ c)~-~_eqnparam3 s above + ~0 + } + ccol { + ~~ _eqnparam2 _eqnparam3 (1 ^-^ c)~-~_eqnparam4 s above + ~~ _eqnparam3 sup 2 (1 ^-^ c)~+~ c above + ~~ _eqnparam3 _eqnparam4 (1 ^-^ c)~+~ _eqnparam2 s above + ~~ ~0 + } + ccol { + ~~ _eqnparam2 _eqnparam4 (1 ^-^ c)~+~ _eqnparam3 s above + ~~ _eqnparam3 _eqnparam4 (1 ^-^ c)~-~ _eqnparam2 s above + ~~ _eqnparam4 sup 2 (1 ^-^ c) ~+~ c above + ~~ ~0 + } + ccol { ~0 above ~0 above ~0 above ~1} +} ~~ right ) +.EN +.P +.sp +Where $c ~=~ cos (_eqnparam1)$, $s ~=~ sin (_eqnparam1)$, and +$||(~_eqnparam2, _eqnparam3, _eqnparam4~)|| ~=~ 1$ (if not, the GL +will normalize this vector). +.sp +.sp +.P +If the matrix mode is either _const(MODELVIEW) or _const(PROJECTION), +all objects drawn after _cmnd is called are rotated. +Use _cmnd(PushMatrix) and _cmnd(PopMatrix) to save and restore +the unrotated coordinate system. +.SH NOTES +This rotation follows the right-hand rule, so +if the vector $(_eqnparam2, _eqnparam3, _eqnparam4)$ points toward the +user, the rotation will be counterclockwise. +.SH ERRORS +_const(INVALID_OPERATION) is generated if _cmnd +is executed between the execution of _cmnd(Begin) +and the corresponding execution of _cmnd(End). +.SH ASSOCIATED GETS +_cmnd(Get) with argument _const(MATRIX_MODE) +.br +_cmnd(Get) with argument _const(COLOR_MATRIX) +.br +_cmnd(Get) with argument _const(MODELVIEW_MATRIX) +.br +_cmnd(Get) with argument _const(PROJECTION_MATRIX) +.br +_cmnd(Get) with argument _const(TEXTURE_MATRIX) +.SH SEE ALSO +_cmnd(MatrixMode), +_cmnd(MultMatrix), +_cmnd(PushMatrix), +_cmnd(Scale), +_cmnd(Translate) |