Mercurial > sdl-ios-xcode
view touchTest/touchSimp.c @ 4653:744b75ad18b8
Started adding vectorization of touch data.
author | Jim Grandpre <jim.tla@gmail.com> |
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date | Tue, 15 Jun 2010 02:12:16 -0400 |
parents | 057e8762d2a1 |
children | 3c4e0130c9b1 |
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#include <stdio.h> #include <SDL.h> #include <math.h> #include <linux/input.h> #include <fcntl.h> #define PI 3.1415926535897 #define WIDTH 640 #define HEIGHT 480 #define BPP 4 #define DEPTH 32 #define MAX_FINGERS 2 int mousx,mousy; int keystat[512]; int bstatus; typedef struct { int x,y; } Point; Point finger[MAX_FINGERS]; void handler (int sig) { printf ("\nexiting...(%d)\n", sig); exit (0); } void perror_exit (char *error) { perror (error); handler (9); } void setpix(SDL_Surface *screen, int x, int y, int col) { Uint32 *pixmem32; Uint32 colour; if((unsigned)x > screen->w) return; if((unsigned)y > screen->h) return; colour = SDL_MapRGB( screen->format, (col>>16)&0xFF, (col>>8)&0xFF, col&0xFF); pixmem32 = (Uint32*) screen->pixels + y*screen->pitch/BPP + x; *pixmem32 = colour; } void drawCircle(SDL_Surface* screen,int x,int y,int r,int c) { float a; for(a=0;a<2*PI;a+=1.f/(float)r) { setpix(screen,(int)(x+r*cos(a)),(int)(y+r*sin(a)),c); } } void DrawScreen(SDL_Surface* screen, int h) { int x, y, xm,ym,c; if(SDL_MUSTLOCK(screen)) { if(SDL_LockSurface(screen) < 0) return; } for(y = 0; y < screen->h; y++ ) { for( x = 0; x < screen->w; x++ ) { //setpixel(screen, x, y, (x*x)/256+3*y+h, (y*y)/256+x+h, h); //xm = (x+h)%screen->w; //ym = (y+h)%screen->w; //c = sin(h/256*2*PI)*x*y/screen->w/screen->h; //setpix(screen,x,y,255*sin(xm/screen->w*2*PI),sin(h/255*2*PI)*255*y/screen->h,c); setpix(screen,x,y,((x%255)<<16) + ((y%255)<<8) + (x+y)%255); } } drawCircle(screen,mousx,mousy,30,0xFFFFFF); int i; for(i=0;i<MAX_FINGERS;i++) drawCircle(screen,finger[i].x,finger[i].y,30,0xFFFFFF); if(SDL_MUSTLOCK(screen)) SDL_UnlockSurface(screen); SDL_Flip(screen); } SDL_Surface* initScreen(int width,int height) { return SDL_SetVideoMode(width, height, DEPTH, SDL_HWSURFACE | SDL_RESIZABLE); } int main(int argc, char* argv[]) { struct input_event ev[64]; int fd, rd, value, size = sizeof (struct input_event); char name[256] = "Unknown"; char *device = NULL; //Setup check if (argv[1] == NULL){ printf("Please specify (on the command line) the path to the dev event interface device\n"); exit (0); } if ((getuid ()) != 0) printf ("You are not root! This may not work...\n"); if (argc > 1) device = argv[1]; //Open Device if ((fd = open (device, O_RDONLY | O_NONBLOCK)) == -1) printf ("%s is not a vaild device.\n", device); //Print Device Name ioctl (fd, EVIOCGNAME (sizeof (name)), name); printf ("Reading From : %s (%s)\n", device, name); SDL_Surface *screen; SDL_Event event; int keypress = 0; int h=0,s=1,i,j; int tx,ty,curf=0; memset(keystat,0,512*sizeof(keystat[0])); if (SDL_Init(SDL_INIT_VIDEO) < 0 ) return 1; if (!(screen = initScreen(WIDTH,HEIGHT))) { SDL_Quit(); return 1; } while(!keystat[27]) { //Poll SDL while(SDL_PollEvent(&event)) { switch (event.type) { case SDL_QUIT: keystat[27] = 1; break; case SDL_KEYDOWN: //printf("%i\n",event.key.keysym.sym); keystat[event.key.keysym.sym] = 1; //keypress = 1; break; case SDL_KEYUP: //printf("%i\n",event.key.keysym.sym); keystat[event.key.keysym.sym] = 0; //keypress = 1; break; case SDL_VIDEORESIZE: if (!(screen = initScreen(event.resize.w, event.resize.h))) { SDL_Quit(); return 1; } break; case SDL_MOUSEMOTION: mousx = event.motion.x; mousy = event.motion.y; break; case SDL_MOUSEBUTTONDOWN: bstatus |= (1<<(event.button.button-1)); break; case SDL_MOUSEBUTTONUP: bstatus &= ~(1<<(event.button.button-1)); break; case SDL_FINGERMOTION: printf("Holy SH!T\n"); break; } } //poll for Touch <- Goal: make this a case: /*if ((rd = read (fd, ev, size * 64)) < size) perror_exit ("read()"); */ //printf("time: %i\n type: %X\n code: %X\n value: %i\n ", // ev->time,ev->type,ev->code,ev->value); if((rd = read (fd, ev, size * 64)) >= size) for (i = 0; i < rd / sizeof(struct input_event); i++) switch (ev[i].type) { case EV_ABS: if(ev[i].code == ABS_X) tx = ev[i].value; else if (ev[i].code == ABS_Y) ty = ev[i].value; else if (ev[i].code == ABS_MISC) { //printf("Misc:type: %X\n code: %X\n value: %i\n ", // ev[i].type,ev[i].code,ev[i].value); } break; case EV_MSC: if(ev[i].code == MSC_SERIAL) curf = ev[i].value; break; case EV_SYN: curf -= 1; if(tx >= 0) finger[curf].x = tx; if(ty >= 0) finger[curf].y = ty; //printf("Synched: %i tx: %i, ty: %i\n",curf,finger[curf].x,finger[curf].y); tx = -1; ty = -1; break; } //And draw DrawScreen(screen,h); /* for(i=0;i<512;i++) if(keystat[i]) printf("%i\n",i); printf("Buttons:%i\n",bstatus); */ } SDL_Quit(); return 0; }