155 lines
3.6 KiB
C++
155 lines
3.6 KiB
C++
#include <emscripten/emscripten.h>
|
|
#include <GL/glfw.h>
|
|
#include <cstdio>
|
|
#include <cstdlib>
|
|
#include <cmath>
|
|
#include <unistd.h>
|
|
|
|
#include <llmr/llmr.hpp>
|
|
#include <llmr/map/tile.hpp>
|
|
|
|
bool dirty = true;
|
|
|
|
class MapView;
|
|
|
|
static MapView *view;
|
|
|
|
class MapView {
|
|
public:
|
|
MapView() :
|
|
dirty(true),
|
|
platform(new llmr::platform(this)),
|
|
map(new llmr::map(platform)) {
|
|
|
|
// Initialize GLFW
|
|
if (!glfwInit()) {
|
|
fprintf(stderr, "Failed to initialize GLFW\n");
|
|
exit(1);
|
|
}
|
|
|
|
int width, height;
|
|
emscripten_get_canvas_size(&width, &height, NULL);
|
|
|
|
glfwSetMousePosCallback(mousemove);
|
|
glfwSetMouseButtonCallback(mouseclick);
|
|
glfwSetMouseWheelCallback(scroll);
|
|
|
|
// Open a window and create its OpenGL context
|
|
if (!glfwOpenWindow(width, height, 8, 8, 8, 8, 16, 8, GLFW_WINDOW)) {
|
|
fprintf(stderr, "Failed to open GLFW window\n");
|
|
|
|
glfwTerminate();
|
|
exit(1);
|
|
}
|
|
|
|
map->setup();
|
|
map->resize(width, height);
|
|
|
|
}
|
|
|
|
~MapView() {
|
|
delete map;
|
|
delete platform;
|
|
glfwTerminate();
|
|
}
|
|
|
|
static void mousemove(int x, int y) {
|
|
if (view->tracking) {
|
|
view->map->moveBy(x - view->last_x, y - view->last_y);
|
|
}
|
|
view->last_x = x;
|
|
view->last_y = y;
|
|
}
|
|
|
|
static void scroll(float pos) {
|
|
double delta = pos;
|
|
|
|
// bool is_wheel = delta != 0 && fmod(delta, 4.000244140625) == 0;
|
|
|
|
double absdelta = delta < 0 ? -delta : delta;
|
|
double scale = 2.0 / (1.0 + exp(-absdelta / 100.0));
|
|
|
|
// Make the scroll wheel a bit slower.
|
|
// if (!is_wheel) {
|
|
// scale = (scale - 1.0) / 2.0 + 1.0;
|
|
// }
|
|
|
|
// Zooming out.
|
|
if (delta < 0 && scale != 0) {
|
|
scale = 1.0 / scale;
|
|
}
|
|
|
|
view->map->scaleBy(scale, view->last_x, view->last_y);
|
|
}
|
|
|
|
static void mouseclick(int button, int action) {
|
|
if (button == GLFW_MOUSE_BUTTON_1) {
|
|
view->tracking = action == GLFW_PRESS;
|
|
} else if (button == GLFW_MOUSE_BUTTON_RIGHT) {
|
|
fprintf(stderr, "right mouse\n");
|
|
}
|
|
}
|
|
|
|
int run() {
|
|
emscripten_set_main_loop(render, 60, 1);
|
|
return 0;
|
|
}
|
|
|
|
static void render() {
|
|
if (view->dirty) {
|
|
view->map->render();
|
|
// glClearColor(1, 1, 0, 1);
|
|
// glClear(GL_COLOR_BUFFER_BIT);
|
|
|
|
view->dirty = false;
|
|
}
|
|
}
|
|
|
|
bool dirty;
|
|
double last_x, last_y;
|
|
bool tracking;
|
|
|
|
|
|
llmr::platform *platform;
|
|
llmr::map *map;
|
|
|
|
};
|
|
|
|
|
|
void llmr::platform::restart() {
|
|
view->dirty = true;
|
|
}
|
|
|
|
void ontileload(void* custom, void* bytes, int length) {
|
|
fprintf(stderr, "data loaded successfully: length: %d\n", length);
|
|
llmr::tile *tile = (llmr::tile *)custom;
|
|
tile->setData((uint8_t *)bytes, length);
|
|
if (tile->parse()) {
|
|
view->map->tileLoaded(tile);
|
|
return;
|
|
}
|
|
}
|
|
|
|
void ontileerror(void* custom) {
|
|
fprintf(stderr, "data load error\n");
|
|
llmr::tile *tile = (llmr::tile *)custom;
|
|
view->map->tileFailed(tile);
|
|
}
|
|
|
|
void llmr::platform::request(tile *tile) {
|
|
const char *urlTemplate = "http://api.tiles.mapbox.com/v3/mapbox.mapbox-streets-v4/%d/%d/%d.vector.pbf";
|
|
char urlString[255];
|
|
snprintf(urlString, 255, urlTemplate, tile->z, tile->x, tile->y);
|
|
fprintf(stderr, "requesting %s\n", urlString);
|
|
|
|
emscripten_async_wget_data(urlString, tile, ontileload, ontileerror);
|
|
}
|
|
|
|
|
|
int main() {
|
|
view = new MapView();
|
|
int ret = view->run();
|
|
delete view;
|
|
return ret;
|
|
}
|