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plasma.c (7086B)
1 #! /usr/bin/env sheepy
2 /* or direct path to sheepy: #! /usr/local/bin/sheepy */
3
4 /* Libsheepy documentation: https://spartatek.se/libsheepy/ */
5 #include "libsheepyObject.h"
6 #include "termbox.h"
7 #include <stdarg.h>
8
9 #include "math.h"
10
11 int argc; char **argv;
12
13 /* enable/disable logging */
14 /* #undef pLog */
15 /* #define pLog(...) */
16
17 u32 plasma[2000][2000];
18 u32 palette[256];
19 int paletteShift;
20 bool quit = no;
21
22 void print_tb(const char *str, int x, int y, uint16_t fg, uint16_t bg)
23 {
24 while (*str) {
25 uint32_t uni;
26 str += tb_utf8_char_to_unicode(&uni, str);
27 tb_change_cell(x, y, uni, fg, bg);
28 x++;
29 }
30 }
31
32 void printf_tb(int x, int y, uint16_t fg, uint16_t bg, const char *fmt, ...)
33 {
34 char buf[4096];
35 va_list vl;
36 va_start(vl, fmt);
37 vsnprintf(buf, sizeof(buf), fmt, vl);
38 va_end(vl);
39 print_tb(buf, x, y, fg, bg);
40 }
41
42 u32 HSVtoRGB(float H, float S,float V){
43 if(H>360 || H<0 || S>100 || S<0 || V>100 || V<0){
44 logE("The givem HSV values are not in valid range");
45 ret 0;
46 }
47 float s = S/100;
48 float v = V/100;
49 float C = s*v;
50 float X = C*(1-fabsf(fmodf(H/60.0, 2)-1));
51 float m = v-C;
52 float r,g,b;
53 if(H >= 0 && H < 60){
54 r = C,g = X,b = 0;
55 }
56 else if(H >= 60 && H < 120){
57 r = X,g = C,b = 0;
58 }
59 else if(H >= 120 && H < 180){
60 r = 0,g = C,b = X;
61 }
62 else if(H >= 180 && H < 240){
63 r = 0,g = X,b = C;
64 }
65 else if(H >= 240 && H < 300){
66 r = X,g = 0,b = C;
67 }
68 else{
69 r = C,g = 0,b = X;
70 }
71
72 int R = (r+m)*255;
73 int G = (g+m)*255;
74 int B = (b+m)*255;
75
76 ret (R << 16) + (G << 8) + B;
77 }
78
79 void showStuff(void *context) {
80 forever {
81
82 // 40 images/s
83 paletteShift = (getMonotonicTime()/25000000) % 1024;
84
85 tb_clear();
86 range(y, tb_height()*2) {
87 range(x, tb_width()) {
88 if (y & 1) {
89 // odd line
90 tb_change_cell(/*x*/ x, /*y*/ y/2, 0x2584, palette[(plasma[y][x] + paletteShift) % 256],
91 palette[(plasma[y-1][x] + paletteShift) % 256]);
92 }
93 }
94 }
95
96 tb_present();
97
98 msSleep(25);
99 if (quit) break;
100 }
101 }
102
103 int main(int ARGC, char** ARGV) {
104
105 argc = ARGC; argv = ARGV;
106
107 initLibsheepy(ARGV[0]);
108 setLogMode(LOG_FUNC);
109 pError0(openProgLogFile());
110 //setLogSymbols(LOG_UTF8);
111 //disableLibsheepyErrorLogs;
112
113 int r = tb_init();
114 if (r) {
115 logE("tb_init() failed with error code %d\n", r);
116 XFailure;
117 }
118
119 tb_select_output_mode(TB_OUTPUT_TRUECOLOR);
120
121 //tb_set_cursor(0,0);
122
123 void draw_all(void) {
124 tb_clear();
125 //tb_change_cell(/*x*/ 2, /*y*/ 2, '@', TB_GREEN, TB_WHITE | TB_BOLD);
126 tb_present();
127 }
128
129 draw_all();
130
131 /* range(j, ybmXT_549309366Height) { */
132 /* range(i, ybmXT_549309366Width) { */
133 /* if (j & 1) { */
134 /* // odd line */
135 /* tb_change_cell(#<{(|x|)}># i, #<{(|y|)}># j/2, 0x2584, ybmXT_549309366Pixels[j * ybmXT_549309366Width + i], ybmXT_549309366Pixels[(j-1) * ybmXT_549309366Width + i]); */
136 /* } */
137 /* else { */
138 /* // even line */
139 /* tb_change_cell(#<{(|x|)}># i, #<{(|y|)}># j/2, 0x2584, TB_DEFAULT, ybmXT_549309366Pixels[j * ybmXT_549309366Width + i]); */
140 /* } */
141 /* } */
142 /* } */
143
144 arange(i, palette) {
145 //palette[i] = HSVtoRGB((f32)i*360.0/256.0,100,100);
146 /* palette[i] = ((u32)(128.0 + 128 * sin(3.1415 * (float)i / 32.0)) << 16) */
147 /* + ((u32)(128.0 + 128 * sin(3.1415 * (float)i / 64.0)) << 8) */
148 /* + (u32)(128.0 + 128 * sin(3.1415 * (float)i / 128.0)); */
149 palette[i] = ((u32)(128.0 + 128 * sin(3.1415 * (float)i / 16.0)) << 16)
150 + ((u32)(128.0 + 128 * sin(3.1415 * (float)i / 128.0)) << 8)
151 + 0;
152 }
153
154 void genPlasma() {
155 u32 w = tb_width();
156 u32 h = tb_height()*2;
157 range(y, tb_height()*2) {
158 range(x, tb_width()) {
159 if (y & 1) {
160 // odd line
161 //tb_change_cell(/*x*/ x, /*y*/ y/2, 0x2584, pixels[imageIndex][y * widths[imageIndex] + i], pixels[imageIndex][(j-1) * widths[imageIndex] + i]);
162 //u32 color = 128.0 + (128.0 * sin(x / 8.0));
163 /* u32 color = 128.0 + (128.0 * sin(sqrt((x - w / 2.0) * (x - w / 2.0) + (y - h / 2.0) * (y - h / 2.0)) / 8.0)); */
164 /* u32 colorDown = 128.0 + (128.0 * sin(sqrt((x - w / 2.0) * (x - w / 2.0) + ((y-1) - h / 2.0) * ((y-1) - h / 2.0)) / 8.0)); */
165 /* u32 color = (128.0 + (128.0 * sin(x / 16.0)) + 128.0 + (128.0 * sin(y / 16.0))) / 2; */
166 /* u32 colorDown = (128.0 + (128.0 * sin(x / 16.0)) + 128.0 + (128.0 * sin((y-1) / 16.0))) / 2; */
167 /* u32 color = ( 128.0 + (128.0 * sin(x / 16.0)) */
168 /* + 128.0 + (128.0 * sin(y / 8.0)) */
169 /* + 128.0 + (128.0 * sin((x + y) / 16.0)) */
170 /* + 128.0 + (128.0 * sin(sqrt(x * x + y * y) / 8.0)) */
171 /* ) / 4; */
172 /* u32 colorDown = ( 128.0 + (128.0 * sin(x / 16.0)) */
173 /* + 128.0 + (128.0 * sin((y-1) / 8.0)) */
174 /* + 128.0 + (128.0 * sin((x + (y-1)) / 16.0)) */
175 /* + 128.0 + (128.0 * sin(sqrt(x * x + (y-1) * (y-1)) / 8.0)) */
176 /* ) / 4; */
177 u32 color = ( 128.0 + (128.0 * sin(x / 16.0))
178 + 128.0 + (128.0 * sin(y / 32.0))
179 + 128.0 + (128.0 * sin(sqrt(((x - w / 2.0)* (x - w / 2.0) + (y - h / 2.0) * (y - h / 2.0))) / 8.0))
180 + 128.0 + (128.0 * sin(sqrt((x * x + y * y)) / 8.0))
181 ) / 4;
182 u32 colorDown = ( 128.0 + (128.0 * sin(x / 16.0))
183 + 128.0 + (128.0 * sin((y-1) / 32.0))
184 + 128.0 + (128.0 * sin(sqrt(((x - w / 2.0)* (x - w / 2.0) + ((y-1) - h / 2.0) * ((y-1) - h / 2.0))) / 8.0))
185 + 128.0 + (128.0 * sin(sqrt((x * x + (y-1) * (y-1))) / 8.0))
186 ) / 4;
187 /* u32 rgb = (color << 16) + (color << 8) + color; */
188 /* u32 rgbDown = (colorDown << 16) + (colorDown << 8) + colorDown; */
189 /* u32 rgb = palette[color]; */
190 /* u32 rgbDown = palette[colorDown]; */
191 plasma[y][x] = color;
192 plasma[y-1][x] = colorDown;
193 //tb_change_cell(/*x*/ x, /*y*/ y/2, 0x2584, rgb, rgbDown);
194 }
195 }
196 }
197 }
198 genPlasma();
199
200 tpoolAdd(showStuff, null /*context*/);
201
202 struct tb_event ev;
203 while (tb_poll_event(&ev)) {
204 switch (ev.type) {
205 case TB_EVENT_KEY:
206 switch (ev.key) {
207 /* case TB_KEY_ESC: */
208 /* ctx.quit = yes; */
209 /* goto done; */
210 /* break; */
211 case TB_KEY_SPACE:
212 //showImage();
213 break;
214 }
215 if (ev.ch == 'q') {
216 quit = yes;
217 goto done;
218 }
219
220 //tb_stringf(2, 30, TB_WHITE, TB_DEFAULT, "key code: %5d, char: %5d, mod: %5d", ev.key, ev.ch, ev.mod);
221 break;
222 case TB_EVENT_RESIZE:
223 draw_all();
224 break;
225 }
226 tb_present();
227 }
228
229 done:
230 tpoolWait;
231 tb_shutdown();
232 XSuccess;
233 }
234 // vim: set expandtab ts=2 sw=2: