diff options
Diffstat (limited to '3rdparty/SDL2/test/testgesture.c')
-rw-r--r-- | 3rdparty/SDL2/test/testgesture.c | 310 |
1 files changed, 0 insertions, 310 deletions
diff --git a/3rdparty/SDL2/test/testgesture.c b/3rdparty/SDL2/test/testgesture.c deleted file mode 100644 index a289ce133a8..00000000000 --- a/3rdparty/SDL2/test/testgesture.c +++ /dev/null @@ -1,310 +0,0 @@ -/* - Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org> - - This software is provided 'as-is', without any express or implied - warranty. In no event will the authors be held liable for any damages - arising from the use of this software. - - Permission is granted to anyone to use this software for any purpose, - 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" - * l to load all touches from "./gestureSave" - */ - -#include "SDL.h" -#include <stdlib.h> /* for exit() */ - -#ifdef __EMSCRIPTEN__ -#include <emscripten/emscripten.h> -#endif - -#define WIDTH 640 -#define HEIGHT 480 -#define BPP 4 -#define DEPTH 32 - -/* MUST BE A POWER OF 2! */ -#define EVENT_BUF_SIZE 256 - - -#define VERBOSE 0 - -static SDL_Event events[EVENT_BUF_SIZE]; -static int eventWrite; - - -static int colors[7] = {0xFF,0xFF00,0xFF0000,0xFFFF00,0x00FFFF,0xFF00FF,0xFFFFFF}; - -SDL_Surface *screen; -SDL_Window *window; -SDL_bool quitting = SDL_FALSE; - -typedef struct { - float x,y; -} Point; - -typedef struct { - float ang,r; - Point p; -} Knob; - -static Knob knob; - -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(x < 0 || x >= screen->w) return; - if(y < 0 || y >= screen->h) return; - - pixmem32 = (Uint32*) screen->pixels + y*screen->pitch/BPP + x; - - 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); - - - *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) -{ - 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); - } - } - 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_Surface* screen, SDL_Window* window) -{ - int i; -#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); - } - } - - if(knob.p.x > 0) - drawKnob(screen,knob); - - SDL_UpdateWindowSurface(window); -} - -/* Returns a new SDL_Window if window is NULL or window if not. */ -SDL_Window* initWindow(SDL_Window *window, int width,int height) -{ - if (!window) { - window = SDL_CreateWindow("Gesture Test", - SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, - width, height, SDL_WINDOW_RESIZABLE); - } - return window; -} - -void loop() -{ - SDL_Event event; - SDL_RWops *stream; - - while(SDL_PollEvent(&event)) - { - /* Record _all_ events */ - events[eventWrite & (EVENT_BUF_SIZE-1)] = event; - eventWrite++; - - switch (event.type) - { - case SDL_QUIT: - quitting = SDL_TRUE; - break; - 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; - case SDLK_ESCAPE: - quitting = SDL_TRUE; - break; - } - break; - case SDL_WINDOWEVENT: - if (event.window.event == SDL_WINDOWEVENT_RESIZED) { - if (!(window = initWindow(window, event.window.data1, event.window.data2)) || - !(screen = SDL_GetWindowSurface(window))) - { - SDL_Quit(); - exit(1); - } - } - 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; - } - } - DrawScreen(screen, window); - -#ifdef __EMSCRIPTEN__ - if (quitting) { - emscripten_cancel_main_loop(); - } -#endif -} - -int main(int argc, char* argv[]) -{ - window = NULL; - screen = NULL; - quitting = SDL_FALSE; - - /* Enable standard application logging */ - SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO); - - /* gesture variables */ - knob.r = .1f; - knob.ang = 0; - - if (SDL_Init(SDL_INIT_VIDEO) < 0 ) return 1; - - if (!(window = initWindow(window, WIDTH, HEIGHT)) || - !(screen = SDL_GetWindowSurface(window))) - { - SDL_Quit(); - return 1; - } - -#ifdef __EMSCRIPTEN__ - emscripten_set_main_loop(loop, 0, 1); -#else - while(!quitting) { - loop(); - } -#endif - - SDL_Quit(); - return 0; -} - |