first attempt at linux wrapper
This commit is contained in:
Ansis Brammanis
263
linux/main.cpp
Normal file
263
linux/main.cpp
Normal file
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#include <llmr/llmr.hpp>
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#include <GLFW/glfw3.h>
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#include <curl/curl.h>
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#include <llmr/platform/platform.hpp>
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#include "settings.hpp"
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#include <thread>
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class MapView {
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public:
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MapView() :
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dirty(true),
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tracking(false),
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rotating(false),
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last_click(-1),
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settings(),
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map(settings) {
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}
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void init() {
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if (!glfwInit()) {
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fprintf(stderr, "Failed to initialize glfw\n");
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exit(1);
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}
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glfwWindowHint(GLFW_STENCIL_BITS, 8);
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glfwWindowHint(GLFW_DEPTH_BITS, 16);
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window = glfwCreateWindow(1024, 768, "llmr", NULL, NULL);
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if (!window) {
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glfwTerminate();
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fprintf(stderr, "Failed to initialize window\n");
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exit(1);
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}
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glfwSetWindowUserPointer(window, this);
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glfwMakeContextCurrent(window);
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settings.load();
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map.setup();
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resize(window, 0, 0);
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glfwSwapInterval(1);
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map.loadSettings();
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glfwSetCursorPosCallback(window, mousemove);
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glfwSetMouseButtonCallback(window, mouseclick);
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glfwSetWindowSizeCallback(window, resize);
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glfwSetFramebufferSizeCallback(window, resize);
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glfwSetScrollCallback(window, scroll);
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glfwSetCharCallback(window, character);
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glfwSetKeyCallback(window, key);
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}
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static void character(GLFWwindow *window, unsigned int codepoint) {
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}
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static void key(GLFWwindow *window, int key, int scancode, int action, int mods) {
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MapView *mapView = (MapView *)glfwGetWindowUserPointer(window);
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if (action == GLFW_RELEASE) {
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switch (key) {
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case GLFW_KEY_ESCAPE:
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glfwSetWindowShouldClose(window, true);
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break;
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case GLFW_KEY_TAB:
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mapView->map.toggleDebug();
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break;
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case GLFW_KEY_R:
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if (!mods) mapView->map.resetPosition();
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break;
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case GLFW_KEY_N:
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if (!mods) mapView->map.resetNorth();
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break;
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}
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}
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}
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static void scroll(GLFWwindow *window, double xoffset, double yoffset) {
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MapView *mapView = (MapView *)glfwGetWindowUserPointer(window);
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double delta = yoffset * 40;
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bool is_wheel = delta != 0 && fmod(delta, 4.000244140625) == 0;
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double absdelta = delta < 0 ? -delta : delta;
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double scale = 2.0 / (1.0 + exp(-absdelta / 100.0));
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// Make the scroll wheel a bit slower.
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if (!is_wheel) {
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scale = (scale - 1.0) / 2.0 + 1.0;
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}
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// Zooming out.
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if (delta < 0 && scale != 0) {
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scale = 1.0 / scale;
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}
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mapView->map.scaleBy(scale, mapView->last_x, mapView->last_y);
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}
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static void resize(GLFWwindow *window, int, int) {
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MapView *mapView = (MapView *)glfwGetWindowUserPointer(window);
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int width, height;
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glfwGetWindowSize(window, &width, &height);
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int fb_width, fb_height;
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glfwGetFramebufferSize(window, &fb_width, &fb_height);
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mapView->map.resize(width, height, fb_width, fb_height);
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}
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static void mouseclick(GLFWwindow *window, int button, int action, int modifiers) {
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MapView *mapView = (MapView *)glfwGetWindowUserPointer(window);
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if (button == GLFW_MOUSE_BUTTON_RIGHT || (button == GLFW_MOUSE_BUTTON_LEFT && modifiers & GLFW_MOD_CONTROL)) {
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mapView->rotating = action == GLFW_PRESS;
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if (mapView->rotating) {
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mapView->start_x = mapView->last_x;
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mapView->start_y = mapView->last_y;
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}
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} else if (button == GLFW_MOUSE_BUTTON_LEFT) {
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mapView->tracking = action == GLFW_PRESS;
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if (action == GLFW_RELEASE) {
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double now = glfwGetTime();
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if (now - mapView->last_click < 0.4) {
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mapView->map.scaleBy(2.0, mapView->last_x, mapView->last_y);
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}
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mapView->last_click = now;
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}
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}
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}
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static void mousemove(GLFWwindow *window, double x, double y) {
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MapView *mapView = (MapView *)glfwGetWindowUserPointer(window);
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if (mapView->tracking) {
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mapView->map.moveBy(x - mapView->last_x, y - mapView->last_y);
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} else if (mapView->rotating) {
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mapView->map.rotateBy(mapView->start_x, mapView->start_y, mapView->last_x, mapView->last_y, x, y);
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}
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mapView->last_x = x;
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mapView->last_y = y;
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}
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int run() {
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while (!glfwWindowShouldClose(window)) {
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if (dirty) {
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try {
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dirty = render();
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} catch (std::exception& ex) {
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fprintf(stderr, "exception: %s\n", ex.what());
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}
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glfwSwapBuffers(window);
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fps();
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}
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if (dirty) {
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glfwPollEvents();
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} else {
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glfwWaitEvents();
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}
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}
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return 0;
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}
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bool render() {
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return map.render();
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}
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void fps() {
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static int frames = 0;
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static double time_elapsed = 0;
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frames++;
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double current_time = glfwGetTime();
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if (current_time - time_elapsed >= 1) {
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fprintf(stderr, "FPS: %4.2f\n", frames / (current_time - time_elapsed));
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time_elapsed = current_time;
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frames = 0;
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}
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}
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~MapView() {
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glfwTerminate();
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}
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public:
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bool dirty;
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double last_x, last_y;
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bool tracking;
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double start_x, start_y;
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bool rotating;
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double last_click;
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GLFWwindow *window;
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llmr::Settings_MacOSX settings;
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llmr::Map map;
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};
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MapView *mapView;
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namespace llmr {
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namespace platform {
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void restart(void *) {
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mapView->dirty = true;
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}
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static size_t WriteCallback(void *contents, size_t size, size_t nmemb, void *userp) {
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((std::string*)userp)->append((char*)contents, size *nmemb);
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return size * nmemb;
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}
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void request_http(std::string url, std::function<void(Response&)> func, std::function<void()> cb) {
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Response res;
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CURL *curl;
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CURLcode code;
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curl = curl_easy_init();
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if (curl) {
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curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
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curl_easy_setopt(curl, CURLOPT_WRITEDATA, &res.body);
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curl_easy_setopt(curl, CURLOPT_ACCEPT_ENCODING, "deflate");
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code = curl_easy_perform(curl);
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curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &res.code);
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curl_easy_cleanup(curl);
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}
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func(res);
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cb();
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}
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double time() {
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return glfwGetTime();
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}
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}
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}
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int main() {
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mapView = new MapView();
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mapView->init();
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int ret = mapView->run();
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mapView->settings.sync();
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delete mapView;
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return ret;
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}
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