Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

glulookat(3g) [osx man page]

GLULOOKAT(3G)															     GLULOOKAT(3G)

NAME
gluLookAt - define a viewing transformation C SPECIFICATION
void gluLookAt( GLdouble eyeX, GLdouble eyeY, GLdouble eyeZ, GLdouble centerX, GLdouble centerY, GLdouble centerZ, GLdouble upX, GLdouble upY, GLdouble upZ ) PARAMETERS
eyeX, eyeY, eyeZ Specifies the position of the eye point. centerX, centerY, centerZ Specifies the position of the reference point. upX, upY, upZ Specifies the direction of the up vector. DESCRIPTION
gluLookAt creates a viewing matrix derived from an eye point, a reference point indicating the center of the scene, and an UP vector. The matrix maps the reference point to the negative z axis and the eye point to the origin. When a typical projection matrix is used, the center of the scene therefore maps to the center of the viewport. Similarly, the direction described by the UP vector projected onto the viewing plane is mapped to the positive y axis so that it points upward in the viewport. The UP vector must not be parallel to the line of sight from the eye point to the reference point. Let centerX - eyeX F = centerY - eyeY centerZ - eyeZ Let UP be the vector (upX, upY, upZ). Then normalize as follows: f = F/ || F || UP' = UP/|| UP || Finally, let s = f X UP', and u = s X f. M is then constructed as follows: s[0] s[1] s[2] 0 u[0] u[1] u[2] 0 M = -f[0] -f[1] -f[2] 0 0 0 0 1 and gluLookAt is equivalent to glMultMatrixf(M); glTranslated (-eyeX, -eyeY, -eyeZ); SEE ALSO
glFrustum, gluPerspective GLULOOKAT(3G)

Check Out this Related Man Page

GLULOOKAT(3G)							   OpenGL Manual						     GLULOOKAT(3G)

NAME
gluLookAt - define a viewing transformation C SPECIFICATION
void gluLookAt(GLdouble eyeX, GLdouble eyeY, GLdouble eyeZ, GLdouble centerX, GLdouble centerY, GLdouble centerZ, GLdouble upX, GLdouble upY, GLdouble upZ); PARAMETERS
eyeX, eyeY, eyeZ Specifies the position of the eye point. centerX, centerY, centerZ Specifies the position of the reference point. upX, upY, upZ Specifies the direction of the up vector. DESCRIPTION
gluLookAt creates a viewing matrix derived from an eye point, a reference point indicating the center of the scene, and an UP vector. The matrix maps the reference point to the negative z axis and the eye point to the origin. When a typical projection matrix is used, the center of the scene therefore maps to the center of the viewport. Similarly, the direction described by the UP vector projected onto the viewing plane is mapped to the positive y axis so that it points upward in the viewport. The UP vector must not be parallel to the line of sight from the eye point to the reference point. Let F = centerX - eyeX centerY - eyeY centerZ - eyeZ Let UP be the vector upX upY upZ. Then normalize as follows: f = F F UP '' = UP UP Finally, let s = f x UP '', and u = s x f. M is then constructed as follows: M = s 0 s 1 s 2 0 u 0 u 1 u 2 0 - f 0 - f 1 - f 2 0 0 0 0 1 and gluLookAt is equivalent to glMultMatrixf(M); glTranslated(-eyex, -eyey, -eyez); SEE ALSO
gluPerspective(), glFrustum() COPYRIGHT
Copyright (C) 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/. AUTHORS
opengl.org opengl.org 06/10/2014 GLULOOKAT(3G)
Man Page

4 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Keeping an eye on all user activities

I am responsible for administering 6 Tru64UX servers. I need to keep an eye on all the commands executed by all the users. Is there a way where I can save the commands executed in a seperate folder and then keep checking the list every now and then. How can do it ? (5 Replies)
Discussion started by: shauche
5 Replies

2. UNIX for Dummies Questions & Answers

FreeBSD or Linux

Hello all! I have been using FreeBSD for years, however, I have colleagues who prefer Linux. For some reason we can never meet eye to eye on what the advantage is from one system to the other. My question is, can anyone explain what the differences are between both systems in respect to each... (1 Reply)
Discussion started by: Ivo
1 Replies

3. UNIX for Dummies Questions & Answers

viewing specific lines

hi, is there any command on viewing specific line number of a file? thanks (3 Replies)
Discussion started by: dakid
3 Replies

4. UNIX for Dummies Questions & Answers

viewing/information of binary files

Hi all, Is there a way of viewing a binary file through a UNIX session? Or perhaps viewing information of a binary file through a session? thanks (2 Replies)
Discussion started by: ocelot
2 Replies