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/* OpenSceneGraph example, emscripten.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <emscripten.h>
#include <SDL2/SDL.h>
#include "osgemscripten.h"
// We use app global variable in loop() function.
Application *app = 0;
// Stand alone function that is called by Emscripten to run the app.
void loop()
{
SDL_Event e;
while (SDL_PollEvent(&e))
{
if (app)
{
app->handleEvent(e);
}
}
if (app)
{
app->frame();
}
}
int main(int argc, char *argv[])
{
// Make sure SDL is working.
if (SDL_Init(SDL_INIT_VIDEO) < 0)
{
printf("OSGWeb. Could not init SDL: '%s'\n", SDL_GetError());
return 1;
}
// Clean SDL up at exit.
atexit(SDL_Quit);
// Configure rendering context.
SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
// Create rendering window.
int width = 800;
int height = 600;
SDL_Window* window =
SDL_CreateWindow(
"OSGWeb",
SDL_WINDOWPOS_CENTERED,
SDL_WINDOWPOS_CENTERED,
width,
height,
SDL_WINDOW_OPENGL);
if (!window)
{
printf("OSGWeb. Could not create window: '%s'\n", SDL_GetError());
return 1;
}
SDL_GL_CreateContext(window);
// Create application.
app = new Application;
app->setupWindow(width, height);
app->loadScene("box.osgt");
// Render asynchronously.
emscripten_set_main_loop(loop, -1, 0);
return 0;
}
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