fiore@3: #include "utils.h"
fiore@3: 
fiore@3: void checkExceptions(JNIEnv *env, char* what){
fiore@3: 	if(env->ExceptionOccurred()){
fiore@3: 		std::cout << "Exception occurred!!!" << std::endl;
fiore@3: 		std::cout << what << std::endl;
fiore@3: 		env->ExceptionDescribe();
fiore@3: 		exit(-1);
fiore@3: 	}
fiore@3: }
fiore@3: 
fiore@3: void stopExecution(char* msg){
fiore@3: 	std::cerr << msg << std::endl;
fiore@3: 	exit(-1);
fiore@3: }
fiore@3: 
fiore@3: 
fiore@3: bool fromScreen(const hduVector3Dd &win, hduVector3Dd &obj) {
fiore@3: 
fiore@3: 	hduMatrix m_worldTview;
fiore@3:     hduMatrix m_viewTclip;
fiore@3:     int m_viewport[4];
fiore@3: 	glGetDoublev(GL_MODELVIEW_MATRIX, m_worldTview);
fiore@3:     glGetDoublev(GL_PROJECTION_MATRIX, m_viewTclip);
fiore@3:     glGetIntegerv(GL_VIEWPORT, m_viewport); 
fiore@3:     int nResult =	gluUnProject(
fiore@3:         win[0], win[1], win[2],
fiore@3: 		m_worldTview,
fiore@3:         m_viewTclip,
fiore@3:         m_viewport,
fiore@3:         &obj[0], &obj[1], &obj[2]);
fiore@3:     
fiore@3:     return nResult == GL_TRUE;
fiore@3: }
fiore@3: 
fiore@3: bool toScreen(const hduVector3Dd &obj, hduVector3Dd &win)  {
fiore@3: 	
fiore@3: 	hduMatrix m_worldTview;
fiore@3:     hduMatrix m_viewTclip;
fiore@3:     int m_viewport[4];
fiore@3: 	glGetDoublev(GL_MODELVIEW_MATRIX, m_worldTview);
fiore@3:     glGetDoublev(GL_PROJECTION_MATRIX, m_viewTclip);
fiore@3:     glGetIntegerv(GL_VIEWPORT, m_viewport); 
fiore@3:     int nResult = gluProject(
fiore@3:         obj[0], obj[1], obj[2],
fiore@3: 		m_worldTview,
fiore@3:         m_viewTclip,
fiore@3:         m_viewport,
fiore@3:         &win[0], &win[1], &win[2]);
fiore@3: 
fiore@3:     return nResult == GL_TRUE;
fiore@3: }
fiore@3: 
fiore@3: 
fiore@3: HDdouble norm(HDdouble v[3]){
fiore@3: 	return sqrt( (v[0]*v[0])+(v[1]*v[1])+(v[2]*v[2]));
fiore@3: }
fiore@3: 
fiore@3: void print(char* str){
fiore@3: 	std::cout << str << std::endl;
fiore@3: }
fiore@3: 
fiore@3: void print(int str){
fiore@3: 	std::cout << str << std::endl;
fiore@3: }
fiore@3: 
fiore@3: float rotate(){
fiore@3: 	static float rot = 0.0f;
fiore@3: 	rot += 0.5f;
fiore@3: 	if(rot > 360)
fiore@3: 		rot = 0;
fiore@3: 	return rot;
fiore@3: }