GLFW+Filament

glfw_filament.cpp

static void resizeCallback(GLFWwindow* win, int width, int height) {
    void* nsview = platform_get_view(glfwGetCocoaWindow(win));
    app.engine->destroy(app.swap_chain);
    app.swap_chain = app.engine->createSwapChain(nsview);
    app.window_width = width;
    app.window_height = height;

    glfwGetWindowContentScale(win, &app.dpi_scale[0], &app.dpi_scale[1]);
    app.gui->helper->setDisplaySize(width / app.dpi_scale[0], height / app.dpi_scale[1],
                                    app.dpi_scale[0], app.dpi_scale[1]);

    app.gui->camera->setProjection(filament::Camera::Projection::ORTHO, 0.0,
                                   width / app.dpi_scale[0], height / app.dpi_scale[1], 0.0, 0.0,
                                   1.0);
}

int main() {
    glfwInit();
    glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);

    GLFWwindow* window = glfwCreateWindow(1280, 720, "Topoid Editor", 0, 0);

    app.gui = new Gui({});
    app.gui->window = window;
    app.tilesim = new TileSim({});
    app_init(&app);

    int width, height;
    glfwGetFramebufferSize(window, &width, &height);
    resizeCallback(window, width, height);

    glfwSetMouseButtonCallback(window, mouseButtonCallback);
    glfwSetCursorPosCallback(window, cursorPosCallback);
    glfwSetScrollCallback(window, scrollCallback);
    glfwSetKeyCallback(window, keyCallback);
    glfwSetCharCallback(window, charCallback);
    glfwSetFramebufferSizeCallback(window, resizeCallback);

    if (glfwJoystickPresent(GLFW_JOYSTICK_1)) {
        printf("Joystick found: %s\n", glfwGetJoystickName(GLFW_JOYSTICK_1));
    }

    double previous_time = glfwGetTime();
    while (!glfwWindowShouldClose(window)) {
        const double current_time = glfwGetTime();
        const double seconds = current_time - previous_time;
        previous_time = current_time;
        app_update(&app, seconds);

        // NOTE: Technically, resizeCallback might be triggered during beginFrame, but in practice
        // this can be avoided by sleeping *before* polling for events.
        std::this_thread::sleep_for(milliseconds(16));
        glfwPollEvents();
        pollJoystickArrowKeys(seconds);
    }

    app_destroy(&app);
    delete app.gui;

    glfwTerminate();
}