Function main

samples/SimpleOpenGL/Sample_SimpleOpenGL.c:358–448

---------------------------------------------------------------------------- */

/* ---------------------------------------------------------------------------- */
int main(int argc, char **argv)
{
	const char* model_file = NULL;
	C_STRUCT aiLogStream stream;

	if (argc < 2) {
		print_error("No input model file specified.");
		print_run_command(COMMAND_USAGE);
		return EXIT_FAILURE;
	}

	// Find and execute available commands entered by the user.
	for (int i = 1; i < argc; ++i) {
		if (!strncmp(argv[i], COMMAND_USAGE, strlen(COMMAND_USAGE))) {
			print_usage();
			return EXIT_SUCCESS;
		}
	}

	// Check and validate the specified model file extension.
	model_file = argv[1];
	const char* extension = strrchr(model_file, '.');
	if (!extension) {
		print_error("Please provide a file with a valid extension.");
		return EXIT_FAILURE;
	}

	if (AI_FALSE == aiIsExtensionSupported(extension)) {
		print_error("The specified model file extension is currently "
			"unsupported in Assimp " ASSIMP_VERSION ".");
		return EXIT_FAILURE;
	}

	glutInitWindowSize(900,600);
	glutInitWindowPosition(100,100);
	glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
	glutInit(&argc, argv);
	glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE, GLUT_ACTION_GLUTMAINLOOP_RETURNS);

	glutCreateWindow("Assimp - Very simple OpenGL sample");
	glutDisplayFunc(display);
	glutReshapeFunc(reshape);

	/* get a handle to the predefined STDOUT log stream and attach
	   it to the logging system. It remains active for all further
	   calls to aiImportFile(Ex) and aiApplyPostProcessing. */
	stream = aiGetPredefinedLogStream(aiDefaultLogStream_STDOUT,NULL);
	aiAttachLogStream(&stream);

	/* ... same procedure, but this stream now writes the
	   log messages to assimp_log.txt */
	stream = aiGetPredefinedLogStream(aiDefaultLogStream_FILE,"assimp_log.txt");
	aiAttachLogStream(&stream);

	// Load the model file.
	if(0 != loadasset(model_file)) {
		print_error("Failed to load model. Please ensure that the specified file exists.");
		aiDetachAllLogStreams();