From 9466244a852d6620edf671a89e1a7188248d5482 Mon Sep 17 00:00:00 2001
From: Vegard Storheil Eriksen <zyp@jvnv.net>
Date: Thu, 25 Feb 2010 23:31:04 +0100
Subject: Seperated Application and Pattern classes.

---
 application.cpp | 136 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 application.cpp

(limited to 'application.cpp')

diff --git a/application.cpp b/application.cpp
new file mode 100644
index 0000000..95027ac
--- /dev/null
+++ b/application.cpp
@@ -0,0 +1,136 @@
+#include "application.h"
+
+#include <AR/gsub_lite.h>
+#include <AR/video.h>
+#include <AR/param.h>
+
+#include <SDL/SDL_opengl.h>
+
+#include <iostream>
+#include <stdexcept>
+
+Application::Application() {
+	ARParam  wparam;
+
+	// Open video device.
+	if(arVideoOpen(NULL) < 0) {
+		throw(std::runtime_error("arVideoOpen() failed."));
+	}
+
+	// Find the size of the window.
+	int xsize, ysize;
+	if(arVideoInqSize(&xsize, &ysize) < 0) {
+		throw(std::runtime_error("arVideoInqSize() failed."));
+	}
+
+	std::cout << "Image size (x, y) = (" << xsize << ", " << ysize << ")" << std::endl;
+
+	// Set the initial camera parameters.
+	if(arParamLoad("camera_para.dat", 1, &wparam) < 0) {
+		throw(std::runtime_error("arParamLoad() failed."));
+	}
+
+	arParamChangeSize(&wparam, xsize, 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);
+	// Get our surface
+	surface = SDL_SetVideoMode(xsize * 2, ysize * 2, 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);
+}
+
+Application::~Application() {
+	arVideoCapStop();
+	arVideoClose();
+	arglCleanup(argl_ctx);
+}
+
+void Application::run() {
+	arVideoCapStart();
+	while(1) {
+		SDL_Event event;
+		SDL_PollEvent(&event);
+		if(event.type == SDL_QUIT || event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_ESCAPE) {
+			break;
+		}
+		main_loop();
+	}
+}
+
+void Application::main_loop(void) {
+	ARUint8         *dataPtr;
+
+	if((dataPtr = (ARUint8 *)arVideoGetImage()) == 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, 100, &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);
+
+	glDisable( GL_DEPTH_TEST );
+
+	arVideoCapNext();
+	SDL_GL_SwapBuffers();
+}
-- 
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