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.TH "al_build_transform(3alleg5) Allegro reference manual" "" "" "" ""
.hy
.SH NAME
.PP
al_build_transform \- Allegro 5 API
.SH SYNOPSIS
.IP
.nf
\f[C]
#include\ <allegro5/allegro.h>

void\ al_build_transform(ALLEGRO_TRANSFORM\ *trans,\ float\ x,\ float\ y,
\ \ \ float\ sx,\ float\ sy,\ float\ theta)
\f[]
.fi
.SH DESCRIPTION
.PP
Builds a transformation given some parameters.
This call is equivalent to calling the transformations in this order:
make identity, rotate, scale, translate.
This method is faster, however, than actually calling those functions.
.PP
\f[I]Parameters:\f[]
.IP \[bu] 2
trans \- Transformation to alter
.IP \[bu] 2
x, y \- Translation
.IP \[bu] 2
sx, sy \- Scale
.IP \[bu] 2
theta \- Rotation angle in radians
.RS
.PP
\f[I]Note\f[]: this function was previously documented to be equivalent
to a different (and more useful) order of operations: identity, scale,
rotate, translate.
.RE
.SH SEE ALSO
.PP
al_translate_transform(3alleg5), al_rotate_transform(3alleg5),
al_scale_transform(3alleg5), al_compose_transform(3alleg5)