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add ranged RGB noise

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This commit is contained in:
tTh 2023-06-10 08:52:36 +02:00
parent 920a864b22
commit 72b58a8f0b
3 changed files with 55 additions and 2 deletions
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2
Modules/Makefile
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@ -6,7 +6,7 @@
GFOPT = -Wall -Wextra -g -I.
all: chkpixels t
all: chkpixels trnd t
# -----------------------------------------------

26
Modules/noisepictures.f90
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@ -75,6 +75,32 @@ subroutine noise_rgb16_pic(prgb, nbre)
prgb(ix, iy)%b = mod ( irand(), 65536 )
enddo
end subroutine
!-----------------------------------------------------------------------
! new: Sat Jun 10 06:50:51 UTC 2023
subroutine noise_range_rgb16_pic(prgb, rngs, nbre)
implicit none
type(t_pixrgb), dimension(:,:), intent(inout) :: prgb
integer, intent(in) :: rngs(6)
integer, intent(in) :: nbre
integer :: quux, ix, iy, width, height
print *, 'noise rgb16 range', nbre
print *, 'ranges:'
print *, rngs
width = ubound(prgb, 1) ; height = ubound(prgb, 2)
do quux=1, nbre
ix = 1 + mod ( irand(), width )
iy = 1 + mod ( irand(), height )
prgb(ix, iy)%r = mod ( irand(), 65536 )
prgb(ix, iy)%g = mod ( irand(), 65536 )
prgb(ix, iy)%b = mod ( irand(), 65536 )
enddo
end subroutine
!-----------------------------------------------------------------------
end module noisepictures

29
Modules/trnd.f90
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@ -6,12 +6,13 @@ program essai
use noisepictures
implicit none
integer :: foo, bar
! integer :: foo, bar
write(0, *) "----------------- essai -------------------"
call init_random_seed() ! in module 'mathstuff'
call test_noisepictures_rgb()
call test_noisepictures_rgb_range()
call test_noisepictures_gray()
contains
@ -37,6 +38,32 @@ subroutine test_noisepictures_rgb ()
deallocate (pix)
end subroutine
!-----------------------------------------------------------------------
! new: Sat Jun 10 06:50:51 UTC 2023
subroutine test_noisepictures_rgb_range ()
implicit none
type(t_pixrgb), allocatable :: pix (:,:)
integer :: nombre
integer :: ranges(6)
print *, '------ test des noisepictures RGB range'
allocate(pix(800, 600))
nombre = (800*600)/4
call rgbpix_set_to_rgb(pix, 0, 0, 0)
ranges(1) = 0 ; ranges(2) = 21000
ranges(3) = 22000 ; ranges(4) = 43000
ranges(5) = 44400 ; ranges(6) = 63000
call noise_range_rgb16_pic(pix, ranges, nombre)
call rgbpix_spit_as_pnm_16(pix, 'rngs16.pnm')
deallocate (pix)
end subroutine
!-----------------------------------------------------------------------
subroutine test_noisepictures_gray ()