From 19b6628549c8b80f23976d9b42f2cd853989422c Mon Sep 17 00:00:00 2001
From: Vegard Storheil Eriksen <zyp@jvnv.net>
Date: Tue, 9 Feb 2010 11:38:58 +0100
Subject: Initial commit.

---
 foo.cpp | 180 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 180 insertions(+)
 create mode 100755 foo.cpp

(limited to 'foo.cpp')

diff --git a/foo.cpp b/foo.cpp
new file mode 100755
index 0000000..c924245
--- /dev/null
+++ b/foo.cpp
@@ -0,0 +1,180 @@
+#ifndef __APPLE__
+#include <GL/gl.h>
+#include <GL/glut.h>
+#else
+#include <OpenGL/gl.h>
+#include <GLUT/glut.h>
+#endif
+#include <AR/gsub.h>
+#include <AR/video.h>
+#include <AR/param.h>
+#include <AR/ar.h>
+
+#include <stdexcept>
+#include <iostream>
+
+#include "texturepng.h"
+
+class Pattern {
+	private:
+		double          patt_width;
+		double          patt_center[2];
+		int patt_id;
+		double patt_trans_kake[3][4];
+		
+		Texture* tex;
+		
+	public:
+		Pattern() {
+			patt_width = 10.0;
+			patt_center[0] = 0.0;
+			patt_center[1] = 0.0;
+			
+			patt_id = arLoadPatt("patt.head");
+			
+			tex = new TexturePNG("foo.png");
+		}
+		
+		void update(ARMarkerInfo* marker_info, int marker_num) {
+			for(int j = 0; j < marker_num; j++) {
+				if( patt_id == marker_info[j].id ) {
+					arGetTransMat(&marker_info[j], patt_center, patt_width, patt_trans_kake);
+					draw();
+					//else if( marker_info[k].cf < marker_info[j].cf ) k = j;
+				}
+			}
+		}
+		
+		void draw() {
+			double    gl_para[16];
+			argConvGlpara(patt_trans_kake, gl_para);
+			
+			glMatrixMode(GL_MODELVIEW);
+			glLoadMatrixd(gl_para);
+			
+			glTranslatef(0.0, -8.0, 0.0);
+			
+			glBindTexture(GL_TEXTURE_2D, tex->tex());
+			glBegin(GL_QUADS);
+			glTexCoord2f(0, 1);
+			glVertex3f(-30, -30, 0);
+			glTexCoord2f(0, 0);
+			glVertex3f(-30, 30, 0);
+			glTexCoord2f(1, 0);
+			glVertex3f(30, 30, 0);
+			glTexCoord2f(1, 1);
+			glVertex3f(30, -30, 0);
+			glEnd();
+		}
+};
+
+Pattern* patt;
+
+static void init() {
+	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.
+	ARParam cparam;
+	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);
+	
+	// Open the graphics window.
+	argInit(&cparam, 1.0, 0, 0, 0, 0);
+	
+	// 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);
+}
+
+static void cleanup(void) {
+	arVideoCapStop();
+	arVideoClose();
+	argCleanup();
+}
+
+int count = 0;
+
+static void key_event(unsigned char key, int x, int y) {
+	switch(key) {
+		case 0x1b:
+			printf("*** %f (frame/sec)\n", (double)count/arUtilTimer());
+			cleanup();
+			exit(0);
+	}
+}
+
+static void main_loop(void) {
+	ARUint8         *dataPtr;
+	
+	if((dataPtr = (ARUint8 *)arVideoGetImage()) == NULL) {
+		arUtilSleep(10);
+		return;
+	}
+	
+	if(count == 0) arUtilTimerReset();
+	count++;
+	
+	argDrawMode2D();
+	argDispImage(dataPtr, 0, 0);
+	
+	ARMarkerInfo* marker_info;
+	int marker_num;
+	
+	if(arDetectMarker(dataPtr, 100, &marker_info, &marker_num) < 0) {
+		throw(std::runtime_error("arDetectMarker() failed."));
+	}
+	
+	argDrawMode3D();
+	argDraw3dCamera( 0, 0 );
+	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();
+	argSwapBuffers();
+}
+
+int main(int argc, char **argv)
+{
+	try {
+		glutInit(&argc, argv);
+		init();
+		patt = new Pattern();
+		arVideoCapStart();
+		argMainLoop( NULL, key_event, main_loop );
+	} catch(std::runtime_error e) {
+		cleanup();
+		std::cerr << "Exception caught: " << e.what() << std::endl;
+	}
+	return 0;
+}
-- 
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