add a gradient generator
This commit is contained in:
tTh
parent
42fafdc570
commit
907f538cff
@ -67,6 +67,7 @@ filtres.o: filtres.c $(DEPS)
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gadgrect.o: gadgrect.c $(DEPS)
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glitch.o: glitch.c $(DEPS)
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gradient.o: gradient.c $(DEPS)
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halfsize.o: halfsize.c $(DEPS)
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@ -153,7 +154,7 @@ OBJECTS = 7seg.o \
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doublesz.o drawalpha.o drawing.o drawpatt.o \
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effects.o effects2.o effects3.o extractbits.o \
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filtadapt.o filtres.o \
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gadgrect.o glitch.o \
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gadgrect.o glitch.o gradient.o \
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halfsize.o \
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image.o imprime.o \
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luts15bits.o \
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21
Lib/foo.c
21
Lib/foo.c
@ -17,17 +17,15 @@ return 0;
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}
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/* ============================== */
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void mk_lut(unsigned char lut[])
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{
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int idx, uc;
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float fidx;
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for (idx=0; idx<256; idx++) {
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fidx = (float)idx / 255.0;
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uc = (unsigned char)(255.0*(0.5 - 0.5 * cos(3.141592654*fidx)));
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lut[idx] = uc;
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printf("%7d %7d\n", idx, uc);
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}
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void essai_gradients(void)
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{
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int foo;
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foo = Image_plot_H_gradient("foo.tga", 640, 200);
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fprintf(stderr, "plot h gradient -> %d\n", foo);
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foo = Image_plot_V_gradient("foo.tga", 900, 200);
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fprintf(stderr, "plot v gradient -> %d\n", foo);
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}
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/* ============================== */
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int essai_draw_paint_rect(char *outga)
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@ -77,9 +75,8 @@ return OLL_KORRECT;
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int main(int argc, char *argv[])
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{
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int foo;
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unsigned char Lut[256];
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mk_lut(Lut);
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essai_gradients();
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#if 0
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Image_print_version(2);
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60
Lib/gradient.c
Normal file
60
Lib/gradient.c
Normal file
@ -0,0 +1,60 @@
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/*
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gradient.c
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----------
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new: Sun Sep 17 20:47:57 UTC 2023
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*/
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#include <stdio.h>
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#include <string.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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/*::------------------------------------------------------------------::*/
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int Image_plot_H_gradient(char *fname, int w, int h)
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{
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Image_Desc *img;
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int x, y, pix, foo;
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float fval;
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if ( (img = Image_alloc(w, h, IMAGE_RGB)) == NULL ) {
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#if DEBUG_LEVEL
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fprintf(stderr, "%s: alloc of img failed, file=%s\n", __func__, fname);
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#endif
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return IMAGE_NO_MEM;
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}
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for (x=0; x<w; x++) {
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fval = (float)x / (float)(w-1);
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pix = (int)(fval * 255.0);
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#if DEBUG_LEVEL > 1
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printf("%5d %6.3f %5d\n", x, fval, pix);
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#endif
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for (y=0; y<h; y++) {
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(img->Rpix[y])[x] = pix;
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(img->Gpix[y])[x] = pix;
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(img->Bpix[y])[x] = pix;
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}
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}
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foo = Image_TGA_save(fname, img, 0);
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if (foo) {
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fprintf(stderr, "%s: err write to '%s'\n", __func__, fname);
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return FULL_NUCKED;
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}
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Image_DeAllocate(img); free(img);
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return FUNC_IS_BETA;
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}
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/*::------------------------------------------------------------------::*/
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int Image_plot_V_gradient(char *fname, int w, int h)
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{
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return FUNC_IS_ALPHA;
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}
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/*::------------------------------------------------------------------::*/
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@ -25,6 +25,8 @@
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#define HEADER 33
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#define TIMESTAMP 34
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#define PRHISTO 35
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#define H_GRAD 36
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#define V_GRAD 37
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#define TAG7SEG0 40
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#define BIZARRE 41
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#define ENVIRON 50
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@ -49,6 +51,7 @@ mot_clef commandes[] =
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{ "environ", ENVIRON, "", "" },
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{ "bizarre", BIZARRE, "", "portnawak..." },
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{ "mk_rgb", MK_RGB, "siiiii", "fname w h r g b" },
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{ "mk_hgrad", H_GRAD, "sii", "fname w h" },
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{ NULL, 0, NULL, NULL }
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};
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@ -109,6 +112,24 @@ fprintf(stderr, "%s got %d\n", __func__, foo);
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return foo;
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}
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/*::------------------------------------------------------------------::*/
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/* new: Mon Sep 18 06:28:51 UTC 2023
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this is just a dummy wraper */
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int make_a_H_gradient(char *fname, int w, int h)
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{
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int foo;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %s ( %s %d %d )\n", __func__, fname, w, h);
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#endif
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foo = Image_plot_H_gradient(fname, w, h);
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#if DEBUG_LEVEL
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fprintf(stderr, " got a %d\n", foo);
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#endif
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return foo;
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}
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/*::------------------------------------------------------------------::*/
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int make_a_rgb_tga(char *fname, int w, int h, int r, int g, int b)
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{
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@ -304,13 +325,13 @@ dump_command_line(argc, argv, 0);
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/* new 4 feb 2014 */
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foo = set_new_seed(42);
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#if DEBUG_LEVEL
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fprintf(stderr, "set new seed -> %d\n", foo);
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#if DEBUG_LEVEL > 1
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fprintf(stderr, "!!! set new seed -> %d\n", foo);
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#endif
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if (1 == argc)
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{
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fprintf(stderr, "* tga_tools v 0.1.32 (%s) *\n", __DATE__);
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fprintf(stderr, "* tga_tools v 0.1.33 (%s) *\n", __DATE__);
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fprintf(stderr, "usage:\n\t%s action f.tga [params]\n", argv[0]);
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liste_mots_clefs(commandes, 42);
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exit(0);
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@ -380,6 +401,11 @@ switch(mode)
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foo = make_a_rgb_tga(cptr, GIP(1), GIP(2),
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GIP(3), GIP(4), GIP(5));
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break;
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case H_GRAD:
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cptr = GSP(0);
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fprintf(stderr, "MK_HGRAD -> %s\n", cptr);
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foo = make_a_H_gradient(cptr, GIP(1), GIP(2));
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break;
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case MK_NOISE:
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cptr = GSP(0);
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fprintf(stderr, "MK_NOISE -> %s\n", cptr);
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@ -4,7 +4,7 @@
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http://la.buvette.org/devel/libimage/
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*/
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#ifndef IMAGE_VERSION_STRING
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#define IMAGE_VERSION_STRING "0.4.51 pl 49"
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#define IMAGE_VERSION_STRING "0.4.51 pl 50"
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/*::------------------------------------------------------------------::*/
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/*
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@ -932,6 +932,13 @@ int Image_texture_1(Image_Desc *dst, int bas, int haut);
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int Image_texture_2(Image_Desc *dst, int bas, int haut, int modulo);
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int Image_texture_3(Image_Desc *dst, int b, int h, char *ctrl, int qux);
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/*::------------------------------------------------------------------::*/
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/*
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* module gradient.c
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*/
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int Image_plot_H_gradient(char *fname, int w, int h);
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int Image_plot_V_gradient(char *fname, int w, int h);
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/*::------------------------------------------------------------------::*/
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/*
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module patterns.c
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