117 lines
2.5 KiB
C
117 lines
2.5 KiB
C
/*
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* convertir une image flottante en champ d'altitude
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*
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* nouveau 64 ernest renan - 20220108
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include "tthimage.h"
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#include "floatimg.h"
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int verbosity;
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/* ------------------------------------------------------------------ */
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int This_is_the_real_conversion(FloatImg *fimg, Image_Desc *hf, int k)
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{
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int foo;
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float minmax[6];
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int x, y, h;
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float rgb[6], cumul;
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float maxi;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %s ( %p %p %d )\n", __func__, fimg, hf, k);
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#endif
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foo = fimg_get_minmax_rgb(fimg, minmax);
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// fimg_print_minmax(minmax, "source");
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maxi = 0.0;
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for (y=0; y<fimg->height; y++) {
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for (x=0; x<fimg->width; x++) {
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foo = fimg_get_rgb(fimg, x, y, rgb);
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/* non-magic nuabmer spotted */
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cumul = 1.732 * (rgb[1] + rgb[3] + rgb[5]);
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if (cumul > maxi) maxi = cumul;
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h = (int)cumul;
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foo = Image_hf15_plot(hf, x, y, h);
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}
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}
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fprintf(stderr, "--- the critical maximum is %f\n", maxi);
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return FULL_NUCKED;
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}
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/* ------------------------------------------------------------------ */
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int Convertir_Fimg_to_Povhf(char *fimgname, char *hfname, int k)
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{
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FloatImg fimg;
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Image_Desc *hf;
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int wid, hei;
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int foo;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %s ( %s %s %d )\n", __func__, fimgname, hfname, k);
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#endif
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foo = fimg_create_from_dump(fimgname, &fimg);
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fprintf(stderr, "load of %s --> %d\n", fimgname, foo);
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if (foo) {
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return foo;
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}
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wid = fimg.width; hei = fimg.height; // nice alias
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fprintf(stderr, " source picture size %dx%d\n", wid, hei);
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hf = Image_alloc(wid, hei, IMAGE_RGB);
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fprintf(stderr, "hf alloc -> %p\n", hf);
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if (NULL == hf) {
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return NULL_POINTER;
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}
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foo = This_is_the_real_conversion(&fimg, hf, k);
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fprintf(stderr, "real conversion -> %d\n", foo);
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foo = Image_TGA_save(hfname, hf, 0);
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fprintf(stderr, "export as tga -> %d\n", foo);
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return FULL_NUCKED;
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}
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/* ------------------------------------------------------------------ */
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void help(int nu)
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{
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printf("usage :\n");
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printf("\t$ fimg2povhf src.fimg dst.tga\n");
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}
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/* ------------------------------------------------------------------ */
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int main(int argc, char *argv[])
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{
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int foo;
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verbosity = 1;
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// printf("%s: argc = %d\n", argv[0], argc);
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if (3 != argc) {
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help(0);
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exit(0);
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}
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if (verbosity > 1) {
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Image_print_version(3);
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fimg_print_version(3);
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}
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foo = Convertir_Fimg_to_Povhf(argv[1], argv[2], 0);
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fprintf(stderr, "retour conversion was %d\n", foo);
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fprintf(stderr, "end\n\n");
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return 0;
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}
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/* ------------------------------------------------------------------ */
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