mirror of https://github.com/encounter/SDL.git
testgesture: cleaned up code formatting, etc.
This commit is contained in:
Ryan C. Gordon
parent
7cc0a606d8
commit
6727408d2c
|
|
@ -9,6 +9,7 @@
|
|||
including commercial applications, and to alter it and redistribute it
|
||||
freely.
|
||||
*/
|
||||
|
||||
/* Usage:
|
||||
* Spacebar to begin recording a gesture on all touches.
|
||||
* s to save all touches into "./gestureSave"
|
||||
|
|
@ -32,227 +33,229 @@
|
|||
/* MUST BE A POWER OF 2! */
|
||||
#define EVENT_BUF_SIZE 256
|
||||
|
||||
|
||||
#define VERBOSE 0
|
||||
|
||||
static SDLTest_CommonState *state;
|
||||
static SDL_Event events[EVENT_BUF_SIZE];
|
||||
static int eventWrite;
|
||||
|
||||
|
||||
static int colors[7] = {0xFF,0xFF00,0xFF0000,0xFFFF00,0x00FFFF,0xFF00FF,0xFFFFFF};
|
||||
|
||||
static int quitting = 0;
|
||||
|
||||
typedef struct {
|
||||
float x,y;
|
||||
typedef struct
|
||||
{
|
||||
float x, y;
|
||||
} Point;
|
||||
|
||||
typedef struct {
|
||||
float ang,r;
|
||||
Point p;
|
||||
typedef struct
|
||||
{
|
||||
float ang, r;
|
||||
Point p;
|
||||
} Knob;
|
||||
|
||||
static Knob knob;
|
||||
static Knob knob = { 0.0f, 0.1f, { 0.0f, 0.0f } };
|
||||
|
||||
void setpix(SDL_Surface *screen, float _x, float _y, unsigned int col)
|
||||
|
||||
static 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;
|
||||
Uint32 *pixmem32;
|
||||
Uint32 colour;
|
||||
Uint8 r, g, b;
|
||||
const int x = (int)_x;
|
||||
const int y = (int)_y;
|
||||
float a;
|
||||
|
||||
if(x < 0 || x >= screen->w) return;
|
||||
if(y < 0 || y >= screen->h) return;
|
||||
if ( (x < 0) || (x >= screen->w) || (y < 0) || (y >= screen->h) ) {
|
||||
return;
|
||||
}
|
||||
|
||||
pixmem32 = (Uint32*) screen->pixels + y*screen->pitch/BPP + x;
|
||||
pixmem32 = (Uint32 *) screen->pixels + y * screen->pitch / BPP + x;
|
||||
|
||||
SDL_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 = (float)((col>>24)&0xFF);
|
||||
if(a == 0) a = 0xFF; /* Hack, to make things easier. */
|
||||
a /= 0xFF;
|
||||
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);
|
||||
SDL_GetRGB(colour,screen->format,&r,&g,&b);
|
||||
|
||||
/* r = 0;g = 0; b = 0; */
|
||||
a = (float) ((col >> 24) & 0xFF);
|
||||
if (a == 0) {
|
||||
a = 0xFF; /* Hack, to make things easier. */
|
||||
}
|
||||
|
||||
*pixmem32 = colour;
|
||||
a = (a == 0.0f) ? 1 : (a / 255.0f);
|
||||
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,float x0,float y0,float x1,float y1,unsigned int col) {
|
||||
float t;
|
||||
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,float x,float y,float r,unsigned int c)
|
||||
static void
|
||||
drawLine(SDL_Surface *screen, float x0, float y0, float x1, float y1, unsigned int col)
|
||||
{
|
||||
float tx,ty;
|
||||
float xr;
|
||||
for(ty = (float)-SDL_fabs(r);ty <= (float)SDL_fabs((int)r);ty++) {
|
||||
xr = (float)SDL_sqrt(r*r - ty*ty);
|
||||
if(r > 0) { /* r > 0 ==> filled circle */
|
||||
for(tx=-xr+.5f;tx<=xr-.5;tx++) {
|
||||
setpix(screen,x+tx,y+ty,c);
|
||||
}
|
||||
float t;
|
||||
for (t = 0; t < 1; t += (float) (1.0f / SDL_max(SDL_fabs(x0 - x1), SDL_fabs(y0 - y1)))) {
|
||||
setpix(screen, x1 + t * (x0 - x1), y1 + t * (y0 - y1), col);
|
||||
}
|
||||
else {
|
||||
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*SDL_cosf(k.ang))*screen->w,
|
||||
(k.p.y+k.r/2*SDL_sinf(k.ang))*screen->h,k.r/4*screen->w,0);
|
||||
}
|
||||
|
||||
void DrawScreen(SDL_Window* window)
|
||||
static void
|
||||
drawCircle(SDL_Surface *screen, float x, float y, float r, unsigned int c)
|
||||
{
|
||||
SDL_Surface* screen = SDL_GetWindowSurface(window);
|
||||
int i;
|
||||
|
||||
if (!screen) {
|
||||
return;
|
||||
}
|
||||
|
||||
#if 1
|
||||
SDL_FillRect(screen, NULL, 0);
|
||||
#else
|
||||
int x, y;
|
||||
for(y = 0;y < screen->h;y++)
|
||||
for(x = 0;x < screen->w;x++)
|
||||
setpix(screen,(float)x,(float)y,((x%255)<<16) + ((y%255)<<8) + (x+y)%255);
|
||||
#endif
|
||||
|
||||
/* draw Touch History */
|
||||
for(i = eventWrite; i < eventWrite+EVENT_BUF_SIZE; ++i) {
|
||||
const SDL_Event *event = &events[i&(EVENT_BUF_SIZE-1)];
|
||||
float age = (float)(i - eventWrite) / EVENT_BUF_SIZE;
|
||||
float x, y;
|
||||
unsigned int c, col;
|
||||
|
||||
if(event->type == SDL_FINGERMOTION ||
|
||||
event->type == SDL_FINGERDOWN ||
|
||||
event->type == SDL_FINGERUP) {
|
||||
x = event->tfinger.x;
|
||||
y = event->tfinger.y;
|
||||
|
||||
/* draw the touch: */
|
||||
c = colors[event->tfinger.fingerId%7];
|
||||
col = ((unsigned int)(c*(.1+.85))) | (unsigned int)(0xFF*age)<<24;
|
||||
|
||||
if(event->type == SDL_FINGERMOTION)
|
||||
drawCircle(screen,x*screen->w,y*screen->h,5,col);
|
||||
else if(event->type == SDL_FINGERDOWN)
|
||||
drawCircle(screen,x*screen->w,y*screen->h,-10,col);
|
||||
float tx,ty, xr;
|
||||
for (ty = (float) -SDL_fabs(r); ty <= (float) SDL_fabs((int) r); ty++) {
|
||||
xr = (float) SDL_sqrt(r * r - ty * ty);
|
||||
if (r > 0) { /* r > 0 ==> filled circle */
|
||||
for(tx = -xr + 0.5f; tx <= xr - 0.5f; tx++) {
|
||||
setpix(screen, x + tx, y + ty, c);
|
||||
}
|
||||
} else {
|
||||
setpix(screen, x - xr + 0.5f, y + ty, c);
|
||||
setpix(screen, x + xr - 0.5f, y + ty, c);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if(knob.p.x > 0)
|
||||
drawKnob(screen,knob);
|
||||
|
||||
SDL_UpdateWindowSurface(window);
|
||||
}
|
||||
|
||||
void loop()
|
||||
static void
|
||||
drawKnob(SDL_Surface *screen, const 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 * SDL_cosf(k->ang)) * screen->w,
|
||||
(k->p.y + k->r / 2 * SDL_sinf(k->ang)) * screen->h, k->r / 4 * screen->w, 0);
|
||||
}
|
||||
|
||||
static void
|
||||
DrawScreen(SDL_Window *window)
|
||||
{
|
||||
SDL_Surface *screen = SDL_GetWindowSurface(window);
|
||||
int i;
|
||||
|
||||
if (!screen) {
|
||||
return;
|
||||
}
|
||||
|
||||
SDL_FillRect(screen, NULL, 0);
|
||||
|
||||
/* draw Touch History */
|
||||
for (i = eventWrite; i < eventWrite + EVENT_BUF_SIZE; ++i) {
|
||||
const SDL_Event *event = &events[i & (EVENT_BUF_SIZE - 1)];
|
||||
const float age = (float)(i - eventWrite) / EVENT_BUF_SIZE;
|
||||
float x, y;
|
||||
unsigned int c, col;
|
||||
|
||||
if ( (event->type == SDL_FINGERMOTION) ||
|
||||
(event->type == SDL_FINGERDOWN) ||
|
||||
(event->type == SDL_FINGERUP) ) {
|
||||
x = event->tfinger.x;
|
||||
y = event->tfinger.y;
|
||||
|
||||
/* draw the touch: */
|
||||
c = colors[event->tfinger.fingerId % 7];
|
||||
col = ((unsigned int) (c * (0.1f + 0.85f))) | (unsigned int) (0xFF * age) << 24;
|
||||
|
||||
if (event->type == SDL_FINGERMOTION) {
|
||||
drawCircle(screen, x * screen->w, y * screen->h, 5, col);
|
||||
} else if (event->type == SDL_FINGERDOWN) {
|
||||
drawCircle(screen, x * screen->w, y * screen->h, -10, col);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (knob.p.x > 0) {
|
||||
drawKnob(screen, &knob);
|
||||
}
|
||||
|
||||
SDL_UpdateWindowSurface(window);
|
||||
}
|
||||
|
||||
static void
|
||||
loop(void)
|
||||
{
|
||||
SDL_Event event;
|
||||
SDL_RWops *stream;
|
||||
int i;
|
||||
|
||||
while(SDL_PollEvent(&event))
|
||||
{
|
||||
while (SDL_PollEvent(&event)) {
|
||||
SDLTest_CommonEvent(state, &event, &quitting);
|
||||
|
||||
/* Record _all_ events */
|
||||
events[eventWrite & (EVENT_BUF_SIZE-1)] = event;
|
||||
eventWrite++;
|
||||
/* Record _all_ events */
|
||||
events[eventWrite & (EVENT_BUF_SIZE-1)] = event;
|
||||
eventWrite++;
|
||||
|
||||
switch (event.type)
|
||||
{
|
||||
case SDL_KEYDOWN:
|
||||
switch (event.key.keysym.sym)
|
||||
{
|
||||
case SDLK_i:
|
||||
{
|
||||
int i;
|
||||
for (i = 0; i < SDL_GetNumTouchDevices(); ++i) {
|
||||
SDL_TouchID id = SDL_GetTouchDevice(i);
|
||||
SDL_Log("Fingers Down on device %"SDL_PRIs64": %d", id, SDL_GetNumTouchFingers(id));
|
||||
}
|
||||
break;
|
||||
}
|
||||
case SDLK_SPACE:
|
||||
SDL_RecordGesture(-1);
|
||||
break;
|
||||
case SDLK_s:
|
||||
stream = SDL_RWFromFile("gestureSave", "w");
|
||||
SDL_Log("Wrote %i templates", SDL_SaveAllDollarTemplates(stream));
|
||||
SDL_RWclose(stream);
|
||||
break;
|
||||
case SDLK_l:
|
||||
stream = SDL_RWFromFile("gestureSave", "r");
|
||||
SDL_Log("Loaded: %i", SDL_LoadDollarTemplates(-1, stream));
|
||||
SDL_RWclose(stream);
|
||||
break;
|
||||
switch (event.type) {
|
||||
case SDL_KEYDOWN:
|
||||
switch (event.key.keysym.sym) {
|
||||
case SDLK_i: {
|
||||
for (i = 0; i < SDL_GetNumTouchDevices(); ++i) {
|
||||
const SDL_TouchID id = SDL_GetTouchDevice(i);
|
||||
SDL_Log("Fingers Down on device %"SDL_PRIs64": %d", id, SDL_GetNumTouchFingers(id));
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
case SDLK_SPACE:
|
||||
SDL_RecordGesture(-1);
|
||||
break;
|
||||
|
||||
case SDLK_s:
|
||||
stream = SDL_RWFromFile("gestureSave", "w");
|
||||
SDL_Log("Wrote %i templates", SDL_SaveAllDollarTemplates(stream));
|
||||
SDL_RWclose(stream);
|
||||
break;
|
||||
|
||||
case SDLK_l:
|
||||
stream = SDL_RWFromFile("gestureSave", "r");
|
||||
SDL_Log("Loaded: %i", SDL_LoadDollarTemplates(-1, stream));
|
||||
SDL_RWclose(stream);
|
||||
break;
|
||||
}
|
||||
break;
|
||||
|
||||
#if VERBOSE
|
||||
case SDL_FINGERMOTION:
|
||||
SDL_Log("Finger: %"SDL_PRIs64",x: %f, y: %f",event.tfinger.fingerId,
|
||||
event.tfinger.x,event.tfinger.y);
|
||||
break;
|
||||
|
||||
case SDL_FINGERDOWN:
|
||||
SDL_Log("Finger: %"SDL_PRIs64" down - x: %f, y: %f",
|
||||
event.tfinger.fingerId,event.tfinger.x,event.tfinger.y);
|
||||
break;
|
||||
|
||||
case SDL_FINGERUP:
|
||||
SDL_Log("Finger: %"SDL_PRIs64" up - x: %f, y: %f",
|
||||
event.tfinger.fingerId,event.tfinger.x,event.tfinger.y);
|
||||
break;
|
||||
#endif
|
||||
|
||||
case SDL_MULTIGESTURE:
|
||||
#if VERBOSE
|
||||
SDL_Log("Multi Gesture: x = %f, y = %f, dAng = %f, dR = %f",
|
||||
event.mgesture.x, event.mgesture.y,
|
||||
event.mgesture.dTheta, event.mgesture.dDist);
|
||||
SDL_Log("MG: numDownTouch = %i",event.mgesture.numFingers);
|
||||
#endif
|
||||
|
||||
knob.p.x = event.mgesture.x;
|
||||
knob.p.y = event.mgesture.y;
|
||||
knob.ang += event.mgesture.dTheta;
|
||||
knob.r += event.mgesture.dDist;
|
||||
break;
|
||||
|
||||
case SDL_DOLLARGESTURE:
|
||||
SDL_Log("Gesture %"SDL_PRIs64" performed, error: %f",
|
||||
event.dgesture.gestureId, event.dgesture.error);
|
||||
break;
|
||||
|
||||
case SDL_DOLLARRECORD:
|
||||
SDL_Log("Recorded gesture: %"SDL_PRIs64"",event.dgesture.gestureId);
|
||||
break;
|
||||
}
|
||||
break;
|
||||
|
||||
case SDL_FINGERMOTION:
|
||||
#if VERBOSE
|
||||
SDL_Log("Finger: %"SDL_PRIs64",x: %f, y: %f",event.tfinger.fingerId,
|
||||
event.tfinger.x,event.tfinger.y);
|
||||
#endif
|
||||
break;
|
||||
case SDL_FINGERDOWN:
|
||||
#if VERBOSE
|
||||
SDL_Log("Finger: %"SDL_PRIs64" down - x: %f, y: %f",
|
||||
event.tfinger.fingerId,event.tfinger.x,event.tfinger.y);
|
||||
#endif
|
||||
break;
|
||||
case SDL_FINGERUP:
|
||||
#if VERBOSE
|
||||
SDL_Log("Finger: %"SDL_PRIs64" up - x: %f, y: %f",
|
||||
event.tfinger.fingerId,event.tfinger.x,event.tfinger.y);
|
||||
#endif
|
||||
break;
|
||||
case SDL_MULTIGESTURE:
|
||||
#if VERBOSE
|
||||
SDL_Log("Multi Gesture: x = %f, y = %f, dAng = %f, dR = %f",
|
||||
event.mgesture.x,
|
||||
event.mgesture.y,
|
||||
event.mgesture.dTheta,
|
||||
event.mgesture.dDist);
|
||||
SDL_Log("MG: numDownTouch = %i",event.mgesture.numFingers);
|
||||
#endif
|
||||
knob.p.x = event.mgesture.x;
|
||||
knob.p.y = event.mgesture.y;
|
||||
knob.ang += event.mgesture.dTheta;
|
||||
knob.r += event.mgesture.dDist;
|
||||
break;
|
||||
case SDL_DOLLARGESTURE:
|
||||
SDL_Log("Gesture %"SDL_PRIs64" performed, error: %f",
|
||||
event.dgesture.gestureId,
|
||||
event.dgesture.error);
|
||||
break;
|
||||
case SDL_DOLLARRECORD:
|
||||
SDL_Log("Recorded gesture: %"SDL_PRIs64"",event.dgesture.gestureId);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
for (i = 0; i < state->num_windows; ++i) {
|
||||
if (state->windows[i]) {
|
||||
DrawScreen(state->windows[i]);
|
||||
DrawScreen(state->windows[i]);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -265,43 +268,41 @@ void loop()
|
|||
|
||||
int main(int argc, char* argv[])
|
||||
{
|
||||
/* gesture variables */
|
||||
knob.r = .1f;
|
||||
knob.ang = 0;
|
||||
int i;
|
||||
|
||||
/* !!! FIXME: there should be an SDLTest_CommonDefaultArgs() so apps don't need this. */
|
||||
state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO);
|
||||
if (!state) {
|
||||
return 1;
|
||||
}
|
||||
|
||||
state->window_title = "Gesture Test";
|
||||
state->window_w = WIDTH;
|
||||
state->window_h = HEIGHT;
|
||||
state->skip_renderer = SDL_TRUE;
|
||||
|
||||
for (i = 1; i < argc;) {
|
||||
const int consumed = SDLTest_CommonArg(state, i);
|
||||
if (consumed == 0) {
|
||||
SDL_Log("Usage: %s %s\n", argv[0], SDLTest_CommonUsage(state));
|
||||
return 1;
|
||||
/* !!! FIXME: there should be an SDLTest_CommonDefaultArgs() so apps don't need this. */
|
||||
state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO);
|
||||
if (!state) {
|
||||
return 1;
|
||||
}
|
||||
i += consumed;
|
||||
}
|
||||
|
||||
if (!SDLTest_CommonInit(state)) {
|
||||
return 1;
|
||||
}
|
||||
state->window_title = "Gesture Test";
|
||||
state->window_w = WIDTH;
|
||||
state->window_h = HEIGHT;
|
||||
state->skip_renderer = SDL_TRUE;
|
||||
|
||||
for (i = 1; i < argc;) {
|
||||
const int consumed = SDLTest_CommonArg(state, i);
|
||||
if (consumed == 0) {
|
||||
SDL_Log("Usage: %s %s\n", argv[0], SDLTest_CommonUsage(state));
|
||||
return 1;
|
||||
}
|
||||
i += consumed;
|
||||
}
|
||||
|
||||
if (!SDLTest_CommonInit(state)) {
|
||||
return 1;
|
||||
}
|
||||
|
||||
#ifdef __EMSCRIPTEN__
|
||||
emscripten_set_main_loop(loop, 0, 1);
|
||||
#else
|
||||
while(!quitting) {
|
||||
while (!quitting) {
|
||||
loop();
|
||||
}
|
||||
#endif
|
||||
|
||||
SDLTest_CommonQuit(state);
|
||||
return 0;
|
||||
SDLTest_CommonQuit(state);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue