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experiment on falsecolors

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This commit is contained in:
tTh 2023-11-14 13:06:02 +01:00
parent 378a1046a0
commit a67809b4e8
2 changed files with 63 additions and 54 deletions
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39
Lib/falsecolors.c Normal file
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@ -0,0 +1,39 @@
/*
* FALSECOLORS.C
*
* new: Wed Oct 4 07:32:36 UTC 2023
*
* see also calcluts.c
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdint.h>
#include <string.h>
#include <math.h>
#include "../tthimage.h"
/*::------------------------------------------------------------------::*/
/*::------------------------------------------------------------------::*/
int Image_gen_fc_lut(float maxval, int nbslots, RGB_map *plut)
{
int idx, ilut;
float fval;
fprintf(stderr, ">>> %s ( %f %d %p )\n", __func__, maxval, nbslots, plut);
/* RAZ de les luts */
memset(plut, 0, sizeof(RGB_map));
for (idx=0; idx<nbslots; idx++) {
fval = (float)idx / (float)nbslots;
ilut = (int)(fval*256.0);
fprintf(stderr, " %3d %8.6f %3d\n", idx, fval, ilut);
}
return FULL_NUCKED;
}
/*::------------------------------------------------------------------::*/
/*::------------------------------------------------------------------::*/

76
Lib/foo.c
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@ -7,6 +7,20 @@
#include "../tthimage.h"
/* ============================== */
int essai_false_colors(void)
{
int foo;
RGB_map luts;
foo = Image_gen_fc_lut(27e3, 33, &luts);
fprintf(stderr, "retour gen_fc_lut = %d\n", foo);
return -1;
}
/* ============================== */
int essai_show_t16x24( char *text)
{
if (NULL != text)
@ -28,69 +42,25 @@ foo = Image_plot_V_gradient("foo.tga", 900, 200);
fprintf(stderr, "plot v gradient -> %d\n", foo);
}
/* ============================== */
int essai_draw_paint_rect(char *outga)
{
Image_Desc *img;
Image_Rect rect;
int foo, x, y;
fprintf(stderr, ">>> %s ( '%s' )\n", __func__, outga);
rect.x = 8; rect.y = 8;
rect.w = 6; rect.h = 6;
if (NULL==(img=Image_alloc(64, 32, 3))) {
abort();
}
for (x=0; x<img->width; x+=2) {
for (y=0; y<img->height; y+=2) {
Image_plotRGB(img, x, y, 200, 200, 200);
}
}
foo = Image_draw_rect(img, &rect, 192, 128, 64);
if (foo) {
fprintf(stderr, "%s: err %d draw rect\n", __func__, foo);
return foo;
}
rect.x = 24;
foo = Image_paint_rect(img, &rect, 64, 128, 192);
if (foo) {
fprintf(stderr, "%s: err %d paint rect\n", __func__, foo);
return foo;
}
foo = Image_TGA_save(outga, img, 0);
if (foo) {
fprintf(stderr, "%s: err %d save '%s'\n", __func__, foo, outga);
return foo;
}
return OLL_KORRECT;
}
/* ============================== */
int main(int argc, char *argv[])
{
fprintf(stderr, "*** %s is running\n", argv[0]);
essai_gradients();
#if 0
Image_print_version(2);
if (argc > 1) {
fprintf(stderr, "argument: %s\n", argv[1]);
Image_print_version(0);
Image_print_sizeof_structs("foo");
}
else {
essai_false_colors();
}
/*
foo = essai_show_t16x24(NULL);
fprintf(stderr, "essai show t16x24 --> %d\n", foo);
foo = essai_draw_paint_rect("foo.tga");
fprintf(stderr, "essai draw rect --> %d\n", foo);
Image_egalise_cos01(NULL, NULL, 0);
#endif
*/
return 0;
}