/[pcsx2_0.9.7]/trunk/3rdparty/SDL-1.3.0-5387/test/testgesture.c
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Contents of /trunk/3rdparty/SDL-1.3.0-5387/test/testgesture.c

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Revision 401 - (show annotations) (download)
Fri Feb 25 17:31:09 2011 UTC (9 years, 9 months ago) by william
File MIME type: text/plain
File size: 7016 byte(s)
Auto Commited Import of: pcsx2-0.9.7-DEBUG (upstream: v0.9.7.4358 local: v0.9.7.313-latest) in ./trunk
1 /* Usage:
2 * Spacebar to begin recording a gesture on all touches.
3 * s to save all touches into "./gestureSave"
4 * l to load all touches from "./gestureSave"
5 */
6
7 #include <stdio.h>
8 #include <SDL.h>
9 #include <math.h>
10 #include <SDL_touch.h>
11 #include <SDL_gesture.h>
12
13
14 /* Make sure we have good macros for printing 32 and 64 bit values */
15 #ifndef PRIs32
16 #define PRIs32 "d"
17 #endif
18 #ifndef PRIu32
19 #define PRIu32 "u"
20 #endif
21 #ifndef PRIs64
22 #ifdef __WIN32__
23 #define PRIs64 "I64"
24 #else
25 #define PRIs64 "lld"
26 #endif
27 #endif
28 #ifndef PRIu64
29 #ifdef __WIN32__
30 #define PRIu64 "I64u"
31 #else
32 #define PRIu64 "llu"
33 #endif
34 #endif
35
36 #define WIDTH 640
37 #define HEIGHT 480
38 #define BPP 4
39 #define DEPTH 32
40
41 //MUST BE A POWER OF 2!
42 #define EVENT_BUF_SIZE 256
43
44
45 #define VERBOSE SDL_FALSE
46
47 SDL_Event events[EVENT_BUF_SIZE];
48 int eventWrite;
49
50 int colors[7] = {0xFF,0xFF00,0xFF0000,0xFFFF00,0x00FFFF,0xFF00FF,0xFFFFFF};
51
52 typedef struct {
53 float x,y;
54 } Point;
55
56 typedef struct {
57 float ang,r;
58 Point p;
59 } Knob;
60
61 Knob knob;
62
63 void handler (int sig)
64 {
65 printf ("exiting...(%d)\n", sig);
66 exit (0);
67 }
68
69 void perror_exit (char *error)
70 {
71 perror (error);
72 handler (9);
73 }
74
75 void setpix(SDL_Surface *screen, float _x, float _y, unsigned int col)
76 {
77 Uint32 *pixmem32;
78 Uint32 colour;
79 Uint8 r,g,b;
80 int x = (int)_x;
81 int y = (int)_y;
82 float a;
83
84 if(x < 0 || x > screen->w) return;
85 if(y < 0 || y > screen->h) return;
86
87 pixmem32 = (Uint32*) screen->pixels + y*screen->pitch/BPP + x;
88
89 SDL_memcpy(&colour,pixmem32,screen->format->BytesPerPixel);
90
91 SDL_GetRGB(colour,screen->format,&r,&g,&b);
92 //r = 0;g = 0; b = 0;
93 a = (float)((col>>24)&0xFF);
94 if(a == 0) a = 0xFF; //Hack, to make things easier.
95 a /= 0xFF;
96 r = (Uint8)(r*(1-a) + ((col>>16)&0xFF)*(a));
97 g = (Uint8)(g*(1-a) + ((col>> 8)&0xFF)*(a));
98 b = (Uint8)(b*(1-a) + ((col>> 0)&0xFF)*(a));
99 colour = SDL_MapRGB( screen->format,r, g, b);
100
101
102 *pixmem32 = colour;
103 }
104
105 void drawLine(SDL_Surface *screen,float x0,float y0,float x1,float y1,unsigned int col) {
106 float t;
107 for(t=0;t<1;t+=(float)(1.f/SDL_max(SDL_fabs(x0-x1),SDL_fabs(y0-y1))))
108 setpix(screen,x1+t*(x0-x1),y1+t*(y0-y1),col);
109 }
110
111 void drawCircle(SDL_Surface* screen,float x,float y,float r,unsigned int c)
112 {
113 float tx,ty;
114 float xr;
115 for(ty = (float)-SDL_fabs(r);ty <= (float)SDL_fabs((int)r);ty++) {
116 xr = (float)sqrt(r*r - ty*ty);
117 if(r > 0) { //r > 0 ==> filled circle
118 for(tx=-xr+.5f;tx<=xr-.5;tx++) {
119 setpix(screen,x+tx,y+ty,c);
120 }
121 }
122 else {
123 setpix(screen,x-xr+.5f,y+ty,c);
124 setpix(screen,x+xr-.5f,y+ty,c);
125 }
126 }
127 }
128
129 void drawKnob(SDL_Surface* screen,Knob k) {
130 drawCircle(screen,k.p.x*screen->w,k.p.y*screen->h,k.r*screen->w,0xFFFFFF);
131 drawCircle(screen,(k.p.x+k.r/2*cosf(k.ang))*screen->w,
132 (k.p.y+k.r/2*sinf(k.ang))*screen->h,k.r/4*screen->w,0);
133 }
134
135 void DrawScreen(SDL_Surface* screen)
136 {
137 int x, y, i;
138 if(SDL_MUSTLOCK(screen))
139 {
140 if(SDL_LockSurface(screen) < 0) return;
141 }
142 for(y = 0;y < screen->h;y++)
143 for(x = 0;x < screen->w;x++)
144 setpix(screen,(float)x,(float)y,((x%255)<<16) + ((y%255)<<8) + (x+y)%255);
145
146 //draw Touch History
147 for(i = SDL_max(0,eventWrite - EVENT_BUF_SIZE);i < eventWrite;i++) {
148 SDL_Event event = events[i&(EVENT_BUF_SIZE-1)];
149 int age = eventWrite - i - 1;
150 float x, y;
151 unsigned int c, col;
152
153 if(event.type == SDL_FINGERMOTION ||
154 event.type == SDL_FINGERDOWN ||
155 event.type == SDL_FINGERUP) {
156 SDL_Touch* inTouch = SDL_GetTouch(event.tfinger.touchId);
157 if(inTouch == NULL) continue;
158
159 x = ((float)event.tfinger.x)/inTouch->xres;
160 y = ((float)event.tfinger.y)/inTouch->yres;
161
162 //draw the touch:
163 c = colors[event.tfinger.touchId%7];
164 col =
165 ((unsigned int)(c*(.1+.85))) |
166 ((unsigned int)((0xFF*(1-((float)age)/EVENT_BUF_SIZE))) & 0xFF)<<24;
167
168 if(event.type == SDL_FINGERMOTION)
169 drawCircle(screen,x*screen->w,y*screen->h,5,col);
170 else if(event.type == SDL_FINGERDOWN)
171 drawCircle(screen,x*screen->w,y*screen->h,-10,col);
172 }
173 }
174
175 if(knob.p.x > 0)
176 drawKnob(screen,knob);
177
178 if(SDL_MUSTLOCK(screen)) SDL_UnlockSurface(screen);
179 SDL_Flip(screen);
180 }
181
182 SDL_Surface* initScreen(int width,int height)
183 {
184 return SDL_SetVideoMode(width, height, DEPTH,
185 SDL_HWSURFACE | SDL_RESIZABLE);
186 }
187
188 int main(int argc, char* argv[])
189 {
190 SDL_Surface *screen;
191 SDL_Event event;
192 SDL_bool quitting = SDL_FALSE;
193 SDL_RWops *src;
194
195 //gesture variables
196 knob.r = .1f;
197 knob.ang = 0;
198
199 if (SDL_Init(SDL_INIT_VIDEO) < 0 ) return 1;
200
201 if (!(screen = initScreen(WIDTH,HEIGHT)))
202 {
203 SDL_Quit();
204 return 1;
205 }
206
207 while(!quitting) {
208 while(SDL_PollEvent(&event))
209 {
210 //Record _all_ events
211 events[eventWrite & (EVENT_BUF_SIZE-1)] = event;
212 eventWrite++;
213
214 switch (event.type)
215 {
216 case SDL_QUIT:
217 quitting = SDL_TRUE;
218 break;
219 case SDL_KEYDOWN:
220 switch (event.key.keysym.sym)
221 {
222 case SDLK_SPACE:
223 SDL_RecordGesture(-1);
224 break;
225 case SDLK_s:
226 src = SDL_RWFromFile("gestureSave","w");
227 printf("Wrote %i templates\n",SDL_SaveAllDollarTemplates(src));
228 SDL_RWclose(src);
229 break;
230 case SDLK_l:
231 src = SDL_RWFromFile("gestureSave","r");
232 printf("Loaded: %i\n",SDL_LoadDollarTemplates(-1,src));
233 SDL_RWclose(src);
234 break;
235 case SDLK_ESCAPE:
236 quitting = SDL_TRUE;
237 break;
238 }
239 break;
240 case SDL_VIDEORESIZE:
241 if (!(screen = initScreen(event.resize.w,
242 event.resize.h)))
243 {
244 SDL_Quit();
245 return 1;
246 }
247 break;
248 case SDL_FINGERMOTION:
249 #if VERBOSE
250 printf("Finger: %i,x: %i, y: %i\n",event.tfinger.fingerId,
251 event.tfinger.x,event.tfinger.y);
252 #endif
253 {
254 SDL_Touch* inTouch = SDL_GetTouch(event.tfinger.touchId);
255 SDL_Finger* inFinger = SDL_GetFinger(inTouch,event.tfinger.fingerId);
256 }
257 break;
258 case SDL_FINGERDOWN:
259 #if VERBOSE
260 printf("Finger: %"PRIs64" down - x: %i, y: %i\n",
261 event.tfinger.fingerId,event.tfinger.x,event.tfinger.y);
262 #endif
263 break;
264 case SDL_FINGERUP:
265 #if VERBOSE
266 printf("Finger: %"PRIs64" up - x: %i, y: %i\n",
267 event.tfinger.fingerId,event.tfinger.x,event.tfinger.y);
268 #endif
269 break;
270 case SDL_MULTIGESTURE:
271 #if VERBOSE
272 printf("Multi Gesture: x = %f, y = %f, dAng = %f, dR = %f\n",
273 event.mgesture.x,
274 event.mgesture.y,
275 event.mgesture.dTheta,
276 event.mgesture.dDist);
277 printf("MG: numDownTouch = %i\n",event.mgesture.numFingers);
278 #endif
279 knob.p.x = event.mgesture.x;
280 knob.p.y = event.mgesture.y;
281 knob.ang += event.mgesture.dTheta;
282 knob.r += event.mgesture.dDist;
283 break;
284 case SDL_DOLLARGESTURE:
285 printf("Gesture %"PRIs64" performed, error: %f\n",
286 event.dgesture.gestureId,
287 event.dgesture.error);
288 break;
289 case SDL_DOLLARRECORD:
290 printf("Recorded gesture: %"PRIs64"\n",event.dgesture.gestureId);
291 break;
292 }
293 }
294 DrawScreen(screen);
295 }
296 SDL_Quit();
297 return 0;
298 }
299

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