C Library Functions - rotate (3)
NAME
rotate(3f) - [M_draw:TRANSFORMATION] Set up a rotation in axis axis where axis is one of ’x’,’y’, or ’z’. (LICENSE:PD)
CONTENTS
Synopsis
Description
Options
Example
See Also
SYNOPSIS
subroutine rotate(angle, axis) real angle character axis
DESCRIPTION
Set up a rotation of coordinate system along specified axis, relative to current coordinate system.
OPTIONS
angle Angle in degrees to rotate coordinate system, with clockwise angles being positive. axis Which axis to perform rotation about. Allowed values are ’x’,
EXAMPLE
Sample usage
program demo_rotate use M_draw implicit none real :: x, y, size integer :: idum! set up display call prefsize(300, 300) call prefposition(200, 10) call vinit(’X11’)
SIZE = 1.2 X = -0.75 Y = 0.75 call ortho2(-SIZE, SIZE, -SIZE, SIZE) call color(3) call clear() ! create an object to repeatedly draw call makeobj(1) call polyfill(.true.) call color(1) call rect(0.0, 0.0, X, Y) call polyfill(.false.) call linewidth(200) call color(2) call rect(0.0, 0.0, X, Y) call closeobj() ! draw object, rotating coordinate system between instantiations call callobj(1) call rotate(45.0, ’z’) call callobj(1) call rotate(45.0, ’z’) call callobj(1) call circle(0.0, 0.0, X/3) idum = getkey() call vexit()
end program demo_rotate
SEE ALSO
translate, pushmatrix, popmatrix, scale
| Nemo Release 3.1 | rotate (3) | July 22, 2023 |
