example8.py

See also:

example8.c

example8.rb

#!/usr/bin/env python

#image rotation

## @example example8.py
#  @see example8.c
#  @see example8.rb

from fulguro import *


imin   = flgr2d_load_pgm("../../images/gray/lena.pgm")
imtmp1 = FLGR_Data2D(imin)
imout  = FLGR_Data2D(imin)
imdisc = FLGR_Data2D(imin)

w = imin.size_x
h = imin.size_y
radius = int((min(h,w)/2)/1.4143)

flgr2d_draw_disc(imdisc,w/2,h/2,radius,255)


scr0 = flgr2d_rtview_create(imin)


for i in range(200):
    flgr2d_rtview_refresh(scr0,imin)


for i in range(0,360):
    if i/180 == 1:
        k = (i%180)-179
    else:
        k = i
  
    flgr2d_rotate_center(imout,imin,k)
    flgr2d_replace(imout,imdisc,"==",255,imout,0)
    flgr2d_rtview_refresh(scr0,imout)



    
## Create row link to imin and imout ehehe ;)
## you can also use flgr2d_create_pixmap_link
imlinkin_1   = imin.create_link(2,0,0);
imlinkin_2   = imin.create_link(2,1,0);

imlinkout_1  = imout.create_link(2,0,0);
imlinkout_2  = imout.create_link(2,1,0);



for i in range(0,360):
    if i/180 == 1:
        k = (i%180)-179
    else:
        k = i
  
    flgr2d_rotate_center(imlinkout_1,imlinkin_1,k)
    flgr2d_rotate_center(imlinkout_2,imlinkin_2,-1*k)
    flgr2d_rtview_refresh(scr0,imout)


for i in range(200):
    flgr2d_rtview_refresh(scr0,imout)