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#include "application.h"
#include <AR/gsub_lite.h>
#include <AR/param.h>
#include <SDL/SDL_opengl.h>
#include <iostream>
#include <stdexcept>
Application::Application() {
ARParam wparam;
vp = new VideoProvider();
// Set the initial camera parameters.
if(arParamLoad("camera_para.dat", 1, &wparam) < 0) {
throw(std::runtime_error("arParamLoad() failed."));
}
arParamChangeSize(&wparam, vp->xsize, vp->ysize, &cparam);
arInitCparam(&cparam);
std::cout << "*** Camera Parameters ***" << std::endl;
arParamDisp(&cparam);
// Initialize SDL
if(SDL_Init(SDL_INIT_VIDEO)) {
throw(std::runtime_error("SDL initialization failed"));
}
// Fetch the video info
const SDL_VideoInfo *info = SDL_GetVideoInfo();
if(!info) {
throw(std::runtime_error("SDL info query failed"));
}
// The SDL mode-flags
int flags = SDL_OPENGL; // OpenGL in SDL
flags |= SDL_GL_DOUBLEBUFFER; // Double buffering
flags |= SDL_HWPALETTE; // Hardware palette
// Check for hardware surface aviability
if(info->hw_available) {
flags |= SDL_HWSURFACE;
} else {
flags |= SDL_SWSURFACE;
}
// Check for hardware blit ability
if(info->blit_hw) {
flags |= SDL_HWACCEL;
}
// Setup double buffering
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
// Get our surface
surface = SDL_SetVideoMode(vp->xsize, vp->ysize, 32, flags);
if(!surface) {
throw(std::runtime_error("Video mode set failed"));
}
argl_ctx = arglSetupForCurrentContext();
// Texturing
glEnable(GL_TEXTURE_2D);
// Blending
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
// Smooth shading
glShadeModel(GL_SMOOTH);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
please_quit = false;
}
Application::~Application() {
delete vp;
arglCleanup(argl_ctx);
}
void Application::run() {
vp->start();
while(1) {
SDL_Event event;
SDL_PollEvent(&event);
if(event.type == SDL_QUIT) {
break;
} else if(event.type == SDL_KEYDOWN) {
event_keypress(event.key.keysym.sym);
}
if(please_quit) {
return;
}
main_loop();
}
}
void Application::main_loop(void) {
uint8_t *dataPtr;
if((dataPtr = vp->get()) == NULL) {
arUtilSleep(10);
return;
}
if(count == 0) arUtilTimerReset();
count++;
arglDispImage(dataPtr, &cparam, 1.0, argl_ctx);
ARMarkerInfo* marker_info;
int marker_num;
if(arDetectMarker(dataPtr, 50, &marker_info, &marker_num) < 0) {
throw(std::runtime_error("arDetectMarker() failed."));
}
GLdouble p[16];
arglCameraFrustum(&cparam, 0.1, 1000, p);
glMatrixMode(GL_PROJECTION);
glLoadMatrixd(p);
glClearDepth( 1.0 );
glClear(GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
patt->update(marker_info, marker_num);
patt2->update(marker_info, marker_num);
glDisable( GL_DEPTH_TEST );
vp->next();
SDL_GL_SwapBuffers();
}
void Application::quit() {
please_quit = true;
}
void Application::event_keypress(SDLKey key) {
switch(key) {
case SDLK_ESCAPE:
quit();
break;
}
}
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