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-rw-r--r--apps/plugins/cube.c338
1 files changed, 338 insertions, 0 deletions
diff --git a/apps/plugins/cube.c b/apps/plugins/cube.c
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1/***************************************************************************
2* __________ __ ___.
3* Open \______ \ ____ ____ | | _\_ |__ _______ ___
4* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7* \/ \/ \/ \/ \/
8* $Id$
9*
10* Copyright (C) 2002 Damien Teney
11* modified to use int instead of float math by Andreas Zwirtes
12*
13* All files in this archive are subject to the GNU General Public License.
14* See the file COPYING in the source tree root for full license agreement.
15*
16* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
17* KIND, either express or implied.
18*
19***************************************************************************/
20#include "plugin.h"
21
22#ifdef HAVE_LCD_BITMAP
23
24/* Loops that the values are displayed */
25#define DISP_TIME 30
26
27struct point_3D {
28 long x, y, z;
29};
30
31struct point_2D {
32 long x, y;
33};
34
35static struct point_3D sommet[8];
36static struct point_3D point3D[8];
37static struct point_2D point2D[8];
38
39static long matrice[3][3];
40
41static int nb_points = 8;
42
43static int x_off = 56;
44static int y_off = 95;
45static int z_off = 600;
46
47/* Precalculated sine and cosine * 10000 (four digit fixed point math) */
48static int sin_table[91] =
49{
50 0, 174, 348, 523, 697,
51 871,1045,1218,1391,1564,
52 1736,1908,2079,2249,2419,
53 2588,2756,2923,3090,3255,
54 3420,3583,3746,3907,4067,
55 4226,4383,4539,4694,4848,
56 5000,5150,5299,5446,5591,
57 5735,5877,6018,6156,6293,
58 6427,6560,6691,6819,6946,
59 7071,7193,7313,7431,7547,
60 7660,7771,7880,7986,8090,
61 8191,8290,8386,8480,8571,
62 8660,8746,8829,8910,8987,
63 9063,9135,9205,9271,9335,
64 9396,9455,9510,9563,9612,
65 9659,9702,9743,9781,9816,
66 9848,9876,9902,9925,9945,
67 9961,9975,9986,9993,9998,
68 10000
69};
70
71static struct plugin_api* rb;
72
73static long sin(int val)
74{
75 /* Speed improvement through sukzessive lookup */
76 if (val<181)
77 {
78 if (val<91)
79 {
80 /* phase 0-90 degree */
81 return (long)sin_table[val];
82 }
83 else
84 {
85 /* phase 91-180 degree */
86 return (long)sin_table[180-val];
87 }
88 }
89 else
90 {
91 if (val<271)
92 {
93 /* phase 181-270 degree */
94 return (-1L)*(long)sin_table[val-180];
95 }
96 else
97 {
98 /* phase 270-359 degree */
99 return (-1L)*(long)sin_table[360-val];
100 }
101 }
102 return 0;
103}
104
105static long cos(int val)
106{
107 /* Speed improvement through sukzessive lookup */
108 if (val<181)
109 {
110 if (val<91)
111 {
112 /* phase 0-90 degree */
113 return (long)sin_table[90-val];
114 }
115 else
116 {
117 /* phase 91-180 degree */
118 return (-1L)*(long)sin_table[val-90];
119 }
120 }
121 else
122 {
123 if (val<271)
124 {
125 /* phase 181-270 degree */
126 return (-1L)*(long)sin_table[270-val];
127 }
128 else
129 {
130 /* phase 270-359 degree */
131 return (long)sin_table[val-270];
132 }
133 }
134 return 0;
135}
136
137
138static void cube_rotate(int xa, int ya, int za)
139{
140 int i;
141
142 /* Just to prevent unnecessary lookups */
143 long sxa,cxa,sya,cya,sza,cza;
144 sxa=sin(xa);
145 cxa=cos(xa);
146 sya=sin(ya);
147 cya=cos(ya);
148 sza=sin(za);
149 cza=cos(za);
150
151 /* calculate overall translation matrix */
152 matrice[0][0] = cza*cya/10000L;
153 matrice[1][0] = sza*cya/10000L;
154 matrice[2][0] = -sya;
155
156 matrice[0][1] = cza*sya/10000L*sxa/10000L - sza*cxa/10000L;
157 matrice[1][1] = sza*sya/10000L*sxa/10000L + cxa*cza/10000L;
158 matrice[2][1] = sxa*cya/10000L;
159
160 matrice[0][2] = cza*sya/10000L*cxa/10000L + sza*sxa/10000L;
161 matrice[1][2] = sza*sya/10000L*cxa/10000L - cza*sxa/10000L;
162 matrice[2][2] = cxa*cya/10000L;
163
164 /* apply translation matrix to all points */
165 for(i=0;i<nb_points;i++)
166 {
167 point3D[i].x = matrice[0][0]*sommet[i].x + matrice[1][0]*sommet[i].y
168 + matrice[2][0]*sommet[i].z;
169
170 point3D[i].y = matrice[0][1]*sommet[i].x + matrice[1][1]*sommet[i].y
171 + matrice[2][1]*sommet[i].z;
172
173 point3D[i].z = matrice[0][2]*sommet[i].x + matrice[1][2]*sommet[i].y
174 + matrice[2][2]*sommet[i].z;
175 }
176}
177
178static void cube_viewport(void)
179{
180 int i;
181
182 /* Do viewport transformation for all points */
183 for(i=0;i<nb_points;i++)
184 {
185 point2D[i].x=(((point3D[i].x)<<8)/10000L)/
186 (point3D[i].z/10000L+z_off)+x_off;
187 point2D[i].y=(((point3D[i].y)<<8)/10000L)/
188 (point3D[i].z/10000L+z_off)+y_off;
189 }
190}
191
192static void cube_init(void)
193{
194 /* Original 3D-position of cube's corners */
195 sommet[0].x = -40; sommet[0].y = -40; sommet[0].z = -40;
196 sommet[1].x = 40; sommet[1].y = -40; sommet[1].z = -40;
197 sommet[2].x = 40; sommet[2].y = 40; sommet[2].z = -40;
198 sommet[3].x = -40; sommet[3].y = 40; sommet[3].z = -40;
199 sommet[4].x = 40; sommet[4].y = -40; sommet[4].z = 40;
200 sommet[5].x = -40; sommet[5].y = -40; sommet[5].z = 40;
201 sommet[6].x = -40; sommet[6].y = 40; sommet[6].z = 40;
202 sommet[7].x = 40; sommet[7].y = 40; sommet[7].z = 40;
203}
204
205static void line(int a, int b)
206{
207 rb->lcd_drawline(point2D[a].x, point2D[a].y, point2D[b].x, point2D[b].y);
208}
209
210static void cube_draw(void)
211{
212 /* Draws front face */
213 line(0,1); line(1,2);
214 line(2,3); line(3,0);
215
216 /* Draws rear face */
217 line(4,5); line(5,6);
218 line(6,7); line(7,4);
219
220 /* Draws the other edges */
221 line(0,5);
222 line(1,4);
223 line(2,7);
224 line(3,6);
225}
226
227
228enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
229{
230 int t_disp=0;
231 char buffer[30];
232
233 int xa=0;
234 int ya=0;
235 int za=0;
236 int xs=1;
237 int ys=3;
238 int zs=1;
239 bool highspeed=0;
240 bool exit=0;
241
242 TEST_PLUGIN_API(api);
243 (void)(parameter);
244 rb = api;
245
246 rb->lcd_setfont(FONT_SYSFIXED);
247
248 cube_init();
249
250 while(!exit)
251 {
252 if (!highspeed)
253 rb->sleep(4);
254
255 rb->lcd_clear_display();
256 cube_rotate(xa,ya,za);
257 cube_viewport();
258 cube_draw();
259 if (t_disp>0)
260 {
261 t_disp--;
262 rb->snprintf(buffer, 30, "x:%d y:%d z:%d h:%d",xs,ys,zs,highspeed);
263 rb->lcd_putsxy(0, 56, buffer);
264 }
265 rb->lcd_update();
266
267 xa+=xs;
268 if (xa>359)
269 xa-=360;
270 if (xa<0)
271 xa+=360;
272 ya+=ys;
273 if (ya>359)
274 ya-=360;
275 if (ya<0)
276 ya+=360;
277 za+=zs;
278 if (za>359)
279 za-=360;
280 if (za<0)
281 za+=360;
282
283 switch(rb->button_get(false))
284 {
285 case BUTTON_RIGHT:
286 xs+=1;
287 if (xs>10)
288 xs=10;
289 t_disp=DISP_TIME;
290 break;
291 case BUTTON_LEFT:
292 xs-=1;
293 if (xs<-10)
294 xs=-10;
295 t_disp=DISP_TIME;
296 break;
297 case BUTTON_UP:
298 ys+=1;
299 if (ys>10)
300 ys=10;
301 t_disp=DISP_TIME;
302 break;
303 case BUTTON_DOWN:
304 ys-=1;
305 if (ys<-10)
306 ys=-10;
307 t_disp=DISP_TIME;
308 break;
309 case BUTTON_F2:
310 zs+=1;
311 if (zs>10)
312 zs=10;
313 t_disp=DISP_TIME;
314 break;
315 case BUTTON_F1:
316 zs-=1;
317 if (zs<-10)
318 zs=-10;
319 t_disp=DISP_TIME;
320 break;
321 case BUTTON_PLAY:
322 highspeed=!highspeed;
323 t_disp=DISP_TIME;
324 break;
325 case BUTTON_OFF|BUTTON_REL:
326 exit=1;
327 break;
328
329 case SYS_USB_CONNECTED:
330 rb->usb_screen();
331 return PLUGIN_USB_CONNECTED;
332 }
333 }
334
335 return PLUGIN_OK;
336}
337
338#endif
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