C++ (Cpp) qtree_destroy Examples

Example #1

File: multiscaleimage.cpp Project: kangaroo/moon

static void
qtree_destroy (QTree *root)
{
	if (!root)
		return;
	
	if (root->image) {
		cairo_surface_destroy (root->image);
		root->image = NULL;
	}

	qtree_destroy (root->l0);
	qtree_destroy (root->l1);
	qtree_destroy (root->l2);
	qtree_destroy (root->l3);
	g_slice_free (QTree, root);
}

Example #2

File: core.c Project: fbidu/data-structures

void core_run() {
    srand(time(NULL));

    bool quit = false;

    SDL_Event e;
    timer fpsTimer;
    timer capTimer;

    int countedFrames = 0;
    timer_start(&fpsTimer);

    // Um pequeno hack para carregar uma textura otimizada do SDL
    // escondendo toda a implementação do header de entidade.
    SDL_Surface *ballTexture = IMG_Load("circle.png");
    if (SDL_GetWindowSurface(gCore.window) == NULL) {
        printf("[Error] Window Surface is NULL: %s\n", SDL_GetError());
        exit(0);
    }
    SDL_Surface *optimizedTexture = SDL_ConvertSurface(ballTexture, 
            SDL_GetWindowSurface(gCore.window)->format, 0);
    SDL_FreeSurface(ballTexture);

    // Popula a lista inicial de objetos com a textura. 
    node *cur = gCore.entities->head;
    while (cur != NULL) {
        cur->b->texture = optimizedTexture;
        cur = cur->next;
    }

    int nIterations = 0;
    while (!quit) {
        int startTicks = timer_getTicks(&capTimer);

        timer_start(&capTimer);
        gCore.tree = qtree_create(gCore.width, gCore.height, gCore.maxDepth,
                gCore.maxObjectsPerNode);

        node *prevEntities = gCore.entities->head;
        while (prevEntities != NULL) {
            qtree_insert(gCore.tree, gCore.tree->root, prevEntities->b);
            prevEntities = prevEntities->next;
        }

        while (SDL_PollEvent(&e) != 0) {
            switch (e.type) {
                case SDL_QUIT:
                    quit = true;
                    break;

                case SDL_MOUSEBUTTONDOWN: {
                    printf("[Warn] Spawning ball.\n");
                    int mX, mY;
                    SDL_GetMouseState(&mX, &mY);
                    ball *b = entity_createBall(0, mX - optimizedTexture->w / 2, 
                            mY - optimizedTexture->h / 2, 
                            (2 * (rand() % MAX_ABS_SPEED) - MAX_ABS_SPEED) / SCREEN_FPS, 
                            (2 * (rand() % MAX_ABS_SPEED) - MAX_ABS_SPEED) / SCREEN_FPS,
                            optimizedTexture->w / 2);
                    b->texture = optimizedTexture;

                    list_insertBack(gCore.entities, b);
                    qtree_insert(gCore.tree, gCore.tree->root, b);
                    break;
                }
            }
        }

        float avgFPS = countedFrames / ( timer_getTicks(&fpsTimer) / 1000.f );
        if(avgFPS > 2000000 ) {
            avgFPS = 0;
        }

        if (gCore.maxIterations == -1 || nIterations < gCore.maxIterations) {
            core_update(startTicks);
        }
        nIterations++;

        SDL_SetRenderDrawColor(gCore.renderer, 0xFF, 0xFF, 0xFF, 0xFF);
        SDL_RenderClear(gCore.renderer);

        core_render();

        SDL_RenderPresent(gCore.renderer);
        ++countedFrames;

        int frameTicks = timer_getTicks(&capTimer);
        if (frameTicks < SCREEN_TICK_PER_FRAME) {
            SDL_Delay(SCREEN_TICK_PER_FRAME - frameTicks);
        }

        qtree_destroy(gCore.tree);
    }

    SDL_FreeSurface(optimizedTexture);
}