From 86b1e9e01102c35c59c24faf4811e44bd23b7ee4 Mon Sep 17 00:00:00 2001
From: tTh <tth@konrad.lan>
Date: Fri, 2 Jun 2023 19:29:36 +0200
Subject: [PATCH] trying a new picture noiser

---
 GrafAnim/go.sh        | 10 +++-----
 GrafAnim/noisepic.f90 | 59 ++++++++++++++++++++++++++++++++++++++++---
 2 files changed, 60 insertions(+), 9 deletions(-)

diff --git a/GrafAnim/go.sh b/GrafAnim/go.sh
index a9c0672..6495a77 100755
--- a/GrafAnim/go.sh
+++ b/GrafAnim/go.sh
@@ -2,16 +2,14 @@
 
 set -e
 
-make essai
+make noisepic
 
 for foo in $(seq 0 89)
 do
-	./essai $foo > a.scratch
-	fname=$(printf "F/%04d.tga" $foo)
-	echo $fname
-	genplot2 -s 640x480 a.scratch $fname
+
+	./noisepic $foo
 
 done
 
-convert -delay 10 F/????.tga foo.gif
+convert -delay 10 F/np/*.pnm foo.gif
 
diff --git a/GrafAnim/noisepic.f90 b/GrafAnim/noisepic.f90
index 55b3c69..7f36696 100644
--- a/GrafAnim/noisepic.f90
+++ b/GrafAnim/noisepic.f90
@@ -6,9 +6,9 @@ program noisepic
 
   integer                   :: numframe = 0
 
-  integer                   :: nbarg
+  integer                   :: nbarg, nbre
   character(len=256)        :: arg
-
+  integer                   :: ranges(6)
 
   nbarg = IARGC()
   if (nbarg .GT. 0) then
@@ -17,7 +17,11 @@ program noisepic
        read (arg, *) numframe
   endif
 
-  call make_noise_color_pic(numframe)
+  ranges(0) = 10    ;    ranges(2) = 90
+  ranges(3) = 110   ;    ranges(4) = 166
+  ranges(5) = 205   ;    ranges(6) = 230
+  nbre = 1000+(numframe*555)
+  call make_noise_color_range_pic(numframe, ranges, nbre)
 
 contains
 !-- ------------------------------------------------------------------
@@ -111,6 +115,55 @@ subroutine plot_noise_color_pic(prgb, nbre)
 
   enddo
 
+end subroutine
+!-- ------------------------------------------------------------------
+!-
+!-	Colorized with range
+!-
+subroutine plot_noise_color_range_pic(prgb, nbre)
+  implicit none
+  type(t_pixrgb), dimension(:,:), intent(inout) :: prgb
+  integer, intent(in)                           :: nbre
+  integer :: quux, ix, iy, width, height
+
+  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 = 64 + mod ( irand(), 127 )
+    prgb(ix, iy)%g = 64 + mod ( irand(), 127 )
+    prgb(ix, iy)%b = 64 + mod ( irand(), 127 )
+  enddo
+
+end subroutine
+!-- ------------------------------------------------------------------
+
+subroutine make_noise_color_range_pic (value, rngs, nbre)
+  implicit none
+  integer, intent(in)        :: value, nbre
+  integer, intent(in)        :: rngs(6)
+
+  integer                          :: foo
+  type(t_pixrgb), allocatable      :: pix(:,:)
+  character (len=280)              :: filename
+
+  allocate(pix(320, 240))
+  call rgbpix_set_to_rgb(pix, 0, 0, 0)
+
+  call srand(value+34)
+  foo = irand()
+  print *, 'color_range: val=', value, 'rnd=', foo, 'nbre=', nbre
+
+  write (filename, "(a, i5.5, a)") "./F/np/", value, ".pnm"
+  print *, 'filename: ', trim(filename)
+
+  call plot_noise_color_range_pic(pix, nbre)
+
+  call rgbpix_spit_as_pnm_8(pix, trim(filename))
+
+  deallocate(pix)
+
 end subroutine
 
 !-- ------------------------------------------------------------------