Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

get_align_matrix(3alleg4) [opendarwin man page]

get_align_matrix(3alleg4)					  Allegro manual					 get_align_matrix(3alleg4)

NAME
get_align_matrix - Rotates a matrix to align it along specified coordinate vectors. Allegro game programming library. SYNOPSIS
#include <allegro.h> void get_align_matrix(MATRIX *m, fixed xfront, yfront, zfront, fixed xup, fixed yup, fixed zup); DESCRIPTION
Rotates a matrix so that it is aligned along the specified coordinate vectors (they need not be normalized or perpendicular, but the up and front must not be equal). A front vector of 0,0,-1 and up vector of 0,1,0 will return the identity matrix. SEE ALSO
apply_matrix(3alleg4), get_camera_matrix(3alleg4) Allegro version 4.4.2 get_align_matrix(3alleg4)

Check Out this Related Man Page

get_camera_matrix(3alleg4)					  Allegro manual					get_camera_matrix(3alleg4)

NAME
get_camera_matrix - Constructs a camera matrix for perspective projection. Allegro game programming library. SYNOPSIS
#include <allegro.h> void get_camera_matrix(MATRIX *m, fixed x, y, z, xfront, yfront, zfront, fixed xup, yup, zup, fov, aspect); DESCRIPTION
Constructs a camera matrix for translating world-space objects into a normalised view space, ready for the perspective projection. The x, y, and z parameters specify the camera position, xfront, yfront, and zfront are the 'in front' vector specifying which way the camera is facing (this can be any length: normalisation is not required), and xup, yup, and zup are the 'up' direction vector. The fov parameter specifies the field of view (ie. width of the camera focus) in binary, 256 degrees to the circle format. For typical pro- jections, a field of view in the region 32-48 will work well. 64 (90(de) applies no extra scaling - so something which is one unit away from the viewer will be directly scaled to the viewport. A bigger FOV moves you closer to the viewing plane, so more objects will appear. A smaller FOV moves you away from the viewing plane, which means you see a smaller part of the world. Finally, the aspect ratio is used to scale the Y dimensions of the image relative to the X axis, so you can use it to adjust the propor- tions of the output image (set it to 1 for no scaling - but keep in mind that the projection also performs scaling according to the view- port size). Typically, you will pass (float)w/(float)h, where w and h are the parameters you passed to set_projection_viewport. Note that versions prior to 4.1.0 multiplied this aspect ratio by 4/3. SEE ALSO
apply_matrix(3alleg4), get_align_matrix(3alleg4), set_projection_viewport(3alleg4), persp_project(3alleg4) Allegro version 4.4.2 get_camera_matrix(3alleg4)
Man Page

2 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Shopt -s histappend

What is the point of this? Whenever I close my shell it appends to the history file without adding this. I have never seen it overwrite my history file. # When the shell exits, append to the history file instead of overwriting it shopt -s histappend (3 Replies)
Discussion started by: cokedude
3 Replies

2. OS X (Apple)

Undeletable file

Greetings, I'm trying to delete a file with a weird name from within Terminal on a Mac. It's a very old file (1992) with null characters in the name: ␀␀Word Finder® Plus™. Here are some examples of what I've tried: 12FX009:5 dpontius$ ls ␀␀Word Finder® Plus™ 12FX009:5 dpontius$ rm... (29 Replies)
Discussion started by: dpontius
29 Replies

Featured Tech Videos