Added a Visual Studio project for testgesture
This commit is contained in:
Sam Lantinga
parent
f8d3e248f2
commit
f7fc00e75c
5 changed files with 640 additions and 40 deletions
|
|
@ -62,7 +62,7 @@ Knob knob;
|
|||
|
||||
void handler (int sig)
|
||||
{
|
||||
printf ("\exiting...(%d)\n", sig);
|
||||
printf ("exiting...(%d)\n", sig);
|
||||
exit (0);
|
||||
}
|
||||
|
||||
|
|
@ -72,93 +72,96 @@ void perror_exit (char *error)
|
|||
handler (9);
|
||||
}
|
||||
|
||||
void setpix(SDL_Surface *screen, int x, int y, unsigned int col)
|
||||
void setpix(SDL_Surface *screen, float _x, float _y, unsigned int col)
|
||||
{
|
||||
Uint32 *pixmem32;
|
||||
Uint32 colour;
|
||||
Uint8 r,g,b;
|
||||
int x = (int)_x;
|
||||
int y = (int)_y;
|
||||
float a;
|
||||
|
||||
if((unsigned)x > screen->w) return;
|
||||
if((unsigned)y > screen->h) return;
|
||||
if(x > screen->w) return;
|
||||
if(y > screen->h) return;
|
||||
|
||||
pixmem32 = (Uint32*) screen->pixels + y*screen->pitch/BPP + x;
|
||||
|
||||
Uint8 r,g,b;
|
||||
float a;
|
||||
|
||||
memcpy(&colour,pixmem32,screen->format->BytesPerPixel);
|
||||
SDL_memcpy(&colour,pixmem32,screen->format->BytesPerPixel);
|
||||
|
||||
SDL_GetRGB(colour,screen->format,&r,&g,&b);
|
||||
//r = 0;g = 0; b = 0;
|
||||
a = (col>>24)&0xFF;
|
||||
a = (float)((col>>24)&0xFF);
|
||||
if(a == 0) a = 0xFF; //Hack, to make things easier.
|
||||
a /= 0xFF;
|
||||
r = r*(1-a) + ((col>>16)&0xFF)*(a);
|
||||
g = g*(1-a) + ((col>> 8)&0xFF)*(a);
|
||||
b = b*(1-a) + ((col>> 0)&0xFF)*(a);
|
||||
r = (Uint8)(r*(1-a) + ((col>>16)&0xFF)*(a));
|
||||
g = (Uint8)(g*(1-a) + ((col>> 8)&0xFF)*(a));
|
||||
b = (Uint8)(b*(1-a) + ((col>> 0)&0xFF)*(a));
|
||||
colour = SDL_MapRGB( screen->format,r, g, b);
|
||||
|
||||
|
||||
*pixmem32 = colour;
|
||||
}
|
||||
|
||||
void drawLine(SDL_Surface *screen,int x0,int y0,int x1,int y1,unsigned int col) {
|
||||
void drawLine(SDL_Surface *screen,float x0,float y0,float x1,float y1,unsigned int col) {
|
||||
float t;
|
||||
for(t=0;t<1;t+=1.f/SDL_max(abs(x0-x1),abs(y0-y1)))
|
||||
for(t=0;t<1;t+=(float)(1.f/SDL_max(SDL_fabs(x0-x1),SDL_fabs(y0-y1))))
|
||||
setpix(screen,x1+t*(x0-x1),y1+t*(y0-y1),col);
|
||||
}
|
||||
|
||||
void drawCircle(SDL_Surface* screen,int x,int y,int r,unsigned int c)
|
||||
void drawCircle(SDL_Surface* screen,float x,float y,float r,unsigned int c)
|
||||
{
|
||||
int tx,ty;
|
||||
float tx,ty;
|
||||
float xr;
|
||||
for(ty = -abs(r);ty <= abs(r);ty++) {
|
||||
xr = sqrt(r*r - ty*ty);
|
||||
for(ty = (float)-SDL_fabs(r);ty <= (float)SDL_fabs((int)r);ty++) {
|
||||
xr = (float)sqrt(r*r - ty*ty);
|
||||
if(r > 0) { //r > 0 ==> filled circle
|
||||
for(tx=-xr+.5;tx<=xr-.5;tx++) {
|
||||
for(tx=-xr+.5f;tx<=xr-.5;tx++) {
|
||||
setpix(screen,x+tx,y+ty,c);
|
||||
}
|
||||
}
|
||||
else {
|
||||
setpix(screen,x-xr+.5,y+ty,c);
|
||||
setpix(screen,x+xr-.5,y+ty,c);
|
||||
setpix(screen,x-xr+.5f,y+ty,c);
|
||||
setpix(screen,x+xr-.5f,y+ty,c);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void drawKnob(SDL_Surface* screen,Knob k) {
|
||||
drawCircle(screen,k.p.x*screen->w,k.p.y*screen->h,k.r*screen->w,0xFFFFFF);
|
||||
drawCircle(screen,(k.p.x+k.r/2*cos(k.ang))*screen->w,
|
||||
(k.p.y+k.r/2*sin(k.ang))*screen->h,k.r/4*screen->w,0);
|
||||
drawCircle(screen,(k.p.x+k.r/2*cosf(k.ang))*screen->w,
|
||||
(k.p.y+k.r/2*sinf(k.ang))*screen->h,k.r/4*screen->w,0);
|
||||
}
|
||||
|
||||
void DrawScreen(SDL_Surface* screen)
|
||||
{
|
||||
int x, y;
|
||||
int x, y, i;
|
||||
if(SDL_MUSTLOCK(screen))
|
||||
{
|
||||
if(SDL_LockSurface(screen) < 0) return;
|
||||
}
|
||||
for(y = 0;y < screen->h;y++)
|
||||
for(x = 0;x < screen->w;x++)
|
||||
setpix(screen,x,y,((x%255)<<16) + ((y%255)<<8) + (x+y)%255);
|
||||
setpix(screen,(float)x,(float)y,((x%255)<<16) + ((y%255)<<8) + (x+y)%255);
|
||||
|
||||
int i;
|
||||
//draw Touch History
|
||||
for(i = SDL_max(0,eventWrite - EVENT_BUF_SIZE);i < eventWrite;i++) {
|
||||
SDL_Event event = events[i&(EVENT_BUF_SIZE-1)];
|
||||
int age = eventWrite - i - 1;
|
||||
float x, y;
|
||||
unsigned int c, col;
|
||||
|
||||
if(event.type == SDL_FINGERMOTION ||
|
||||
event.type == SDL_FINGERDOWN ||
|
||||
event.type == SDL_FINGERUP) {
|
||||
SDL_Touch* inTouch = SDL_GetTouch(event.tfinger.touchId);
|
||||
if(inTouch == NULL) continue;
|
||||
|
||||
float x = ((float)event.tfinger.x)/inTouch->xres;
|
||||
float y = ((float)event.tfinger.y)/inTouch->yres;
|
||||
x = ((float)event.tfinger.x)/inTouch->xres;
|
||||
y = ((float)event.tfinger.y)/inTouch->yres;
|
||||
|
||||
//draw the touch:
|
||||
unsigned int c = colors[event.tfinger.touchId%7];
|
||||
unsigned int col =
|
||||
c = colors[event.tfinger.touchId%7];
|
||||
col =
|
||||
((unsigned int)(c*(.1+.85))) |
|
||||
((unsigned int)((0xFF*(1-((float)age)/EVENT_BUF_SIZE))) & 0xFF)<<24;
|
||||
|
||||
|
|
@ -186,15 +189,13 @@ int main(int argc, char* argv[])
|
|||
{
|
||||
SDL_Surface *screen;
|
||||
SDL_Event event;
|
||||
|
||||
//gesture variables
|
||||
knob.r = .1;
|
||||
knob.ang = 0;
|
||||
|
||||
|
||||
SDL_bool quitting = SDL_FALSE;
|
||||
SDL_RWops *src;
|
||||
|
||||
//gesture variables
|
||||
knob.r = .1f;
|
||||
knob.ang = 0;
|
||||
|
||||
if (SDL_Init(SDL_INIT_VIDEO) < 0 ) return 1;
|
||||
|
||||
if (!(screen = initScreen(WIDTH,HEIGHT)))
|
||||
|
|
@ -244,14 +245,15 @@ int main(int argc, char* argv[])
|
|||
return 1;
|
||||
}
|
||||
break;
|
||||
case SDL_FINGERMOTION:
|
||||
;
|
||||
case SDL_FINGERMOTION:
|
||||
#if VERBOSE
|
||||
printf("Finger: %i,x: %i, y: %i\n",event.tfinger.fingerId,
|
||||
event.tfinger.x,event.tfinger.y);
|
||||
#endif
|
||||
SDL_Touch* inTouch = SDL_GetTouch(event.tfinger.touchId);
|
||||
SDL_Finger* inFinger = SDL_GetFinger(inTouch,event.tfinger.fingerId);
|
||||
{
|
||||
SDL_Touch* inTouch = SDL_GetTouch(event.tfinger.touchId);
|
||||
SDL_Finger* inFinger = SDL_GetFinger(inTouch,event.tfinger.fingerId);
|
||||
}
|
||||
break;
|
||||
case SDL_FINGERDOWN:
|
||||
#if VERBOSE
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue