Added Test Directory. Touch input works in touchSimp for wacom bamboo fun on Ubuntu linux. Not yet integrated into library. Should support other touch devices and other linux distros, but not tested on anything else.
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Jim Grandpre
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11 changed files with 1138 additions and 0 deletions
272
touchTest/touchPong.c
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272
touchTest/touchPong.c
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#include <stdio.h>
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#include <SDL.h>
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#include <math.h>
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#include <linux/input.h>
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#include <fcntl.h>
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#define PI 3.1415926535897
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#define WIDTH 640
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#define HEIGHT 480
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#define BPP 4
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#define DEPTH 32
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#define MAX_FINGERS 2
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int mousx,mousy;
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int keystat[512];
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int bstatus;
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typedef struct {
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int x,y;
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} Point;
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Point finger[MAX_FINGERS];
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//Pong Code
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Point ball,ballv;
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void handler (int sig)
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{
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printf ("\nexiting...(%d)\n", sig);
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exit (0);
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}
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void perror_exit (char *error)
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{
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perror (error);
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handler (9);
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}
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void setpix(SDL_Surface *screen, int x, int y, int col)
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{
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Uint32 *pixmem32;
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Uint32 colour;
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if((unsigned)x > screen->w) return;
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if((unsigned)y > screen->h) return;
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colour = SDL_MapRGB( screen->format, (col>>16)&0xFF, (col>>8)&0xFF, col&0xFF);
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pixmem32 = (Uint32*) screen->pixels + y*screen->pitch/BPP + x;
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*pixmem32 = colour;
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}
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void drawCircle(SDL_Surface* screen,int x,int y,int r,int c)
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{
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float a;
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for(a=0;a<2*PI;a+=1.f/(float)r)
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{
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setpix(screen,(int)(x+r*cos(a)),(int)(y+r*sin(a)),c);
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}
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}
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void DrawScreen(SDL_Surface* screen, int h)
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{
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int x, y, xm,ym,c;
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if(SDL_MUSTLOCK(screen))
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{
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if(SDL_LockSurface(screen) < 0) return;
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}
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for(y = 0; y < screen->h; y++ )
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{
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for( x = 0; x < screen->w; x++ )
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{
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//setpixel(screen, x, y, (x*x)/256+3*y+h, (y*y)/256+x+h, h);
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//xm = (x+h)%screen->w;
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//ym = (y+h)%screen->w;
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//c = sin(h/256*2*PI)*x*y/screen->w/screen->h;
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//setpix(screen,x,y,255*sin(xm/screen->w*2*PI),sin(h/255*2*PI)*255*y/screen->h,c);
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setpix(screen,x,y,((x%255)<<16) + ((y%255)<<8) + (x+y)%255);
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}
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}
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drawCircle(screen,mousx,mousy,30,0xFFFFFF);
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int i;
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for(i=0;i<MAX_FINGERS;i++)
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drawCircle(screen,finger[i].x,finger[i].y,30,0xFFFFFF);
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drawCircle(screen,ball.x,ball.y,30,0xFF00FF);
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if(SDL_MUSTLOCK(screen)) SDL_UnlockSurface(screen);
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SDL_Flip(screen);
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}
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SDL_Surface* initScreen(int width,int height)
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{
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return SDL_SetVideoMode(width, height, DEPTH,
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SDL_HWSURFACE | SDL_RESIZABLE);
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}
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int main(int argc, char* argv[])
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{
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struct input_event ev[64];
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int fd, rd, value, size = sizeof (struct input_event);
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char name[256] = "Unknown";
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char *device = NULL;
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//Setup check
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if (argv[1] == NULL){
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printf("Please specify (on the command line) the path to the dev event interface device\n");
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exit (0);
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}
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if ((getuid ()) != 0)
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printf ("You are not root! This may not work...\n");
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if (argc > 1)
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device = argv[1];
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//Open Device
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if ((fd = open (device, O_RDONLY)) == -1)
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printf ("%s is not a vaild device.\n", device);
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//Print Device Name
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ioctl (fd, EVIOCGNAME (sizeof (name)), name);
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printf ("Reading From : %s (%s)\n", device, name);
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SDL_Surface *screen;
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SDL_Event event;
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int keypress = 0;
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int h=0,s=1,i,j;
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int tx,ty,curf=0;
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memset(keystat,0,512*sizeof(keystat[0]));
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if (SDL_Init(SDL_INIT_VIDEO) < 0 ) return 1;
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if (!(screen = initScreen(WIDTH,HEIGHT)))
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{
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SDL_Quit();
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return 1;
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}
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ball.x = screen->w/2;
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ball.y = screen->h/2;
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ballv.x = -3;
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ballv.y = 1;
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while(!keystat[27])
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{
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//Poll SDL
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while(SDL_PollEvent(&event))
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{
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switch (event.type)
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{
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case SDL_QUIT:
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keystat[27] = 1;
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break;
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case SDL_KEYDOWN:
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//printf("%i\n",event.key.keysym.sym);
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keystat[event.key.keysym.sym] = 1;
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//keypress = 1;
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break;
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case SDL_KEYUP:
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//printf("%i\n",event.key.keysym.sym);
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keystat[event.key.keysym.sym] = 0;
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//keypress = 1;
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break;
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case SDL_VIDEORESIZE:
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if (!(screen = initScreen(event.resize.w,
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event.resize.h)))
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{
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SDL_Quit();
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return 1;
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}
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break;
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case SDL_MOUSEMOTION:
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mousx = event.motion.x;
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mousy = event.motion.y;
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break;
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case SDL_MOUSEBUTTONDOWN:
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bstatus |= (1<<(event.button.button-1));
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break;
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case SDL_MOUSEBUTTONUP:
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bstatus &= ~(1<<(event.button.button-1));
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break;
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}
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}
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//poll for Touch <- Goal: make this a case:
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if ((rd = read (fd, ev, size * 64)) < size)
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perror_exit ("read()");
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//printf("time: %i\n type: %X\n code: %X\n value: %i\n ",
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// ev->time,ev->type,ev->code,ev->value);
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for (i = 0; i < rd / sizeof(struct input_event); i++)
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switch (ev[i].type)
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{
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case EV_ABS:
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if(ev[i].code == ABS_X)
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tx = ev[i].value;
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else if (ev[i].code == ABS_Y)
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ty = ev[i].value;
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else if (ev[i].code == ABS_MISC)
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{
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//printf("Misc:type: %X\n code: %X\n value: %i\n ",
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// ev[i].type,ev[i].code,ev[i].value);
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}
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break;
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case EV_MSC:
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if(ev[i].code == MSC_SERIAL)
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curf = ev[i].value;
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break;
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case EV_SYN:
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curf -= 1;
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if(tx >= 0)
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finger[curf].x = tx;
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if(ty >= 0)
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finger[curf].y = ty;
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//printf("Synched: %i tx: %i, ty: %i\n",curf,finger[curf].x,finger[curf].y);
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tx = -1;
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ty = -1;
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break;
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}
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//Pong code
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ball.x += ballv.x;
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ball.y += ballv.y;
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for(i=0;i<MAX_FINGERS;i++)
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{
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if(finger[i].x > 0 || finger[i].y > 0)
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{
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int d2 = (finger[i].x-ball.x)*(finger[i].x-ball.x) +
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(finger[i].y-ball.y)*(finger[i].y-ball.y);
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ballv.x += (50*(ball.x-finger[i].x))/d2;
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ballv.y += (30*(ball.y-finger[i].y))/d2;
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}
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}
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if((unsigned int)ball.x > screen->w){
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ball.x = screen->w/2;
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ball.y = screen->h/2;
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ballv.x = -3;
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ballv.y = 1;
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}
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if((unsigned int)ball.y > screen->h) ballv.y *= -1;
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printf("(%i,%i)\n",ball.x,ball.y);
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//And draw
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DrawScreen(screen,h);
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/*
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for(i=0;i<512;i++)
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if(keystat[i]) printf("%i\n",i);
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printf("Buttons:%i\n",bstatus);
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*/
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}
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SDL_Quit();
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return 0;
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}
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