[www-vrml] OPEN--GL Question

[Juan Manuel Gonzalez Calleros <gonzalez@ISYS.UCL.AC.BE>]

Hello everybody

I am new in the business of computer graphics and of course 3D. I had a 
problem with transformations in OPENGL. My program, it is supposed that 
should make the rotations ans translations of an object, it works but 
the object rotates just  on its own axis X Y Z, I need that  it rotate 
around the Space. I know and I read that I need to multiply the matrix 
by the matrix inverse but it didn't work or ?I don't know how. could you 
have a view on it and if somebody know what do I need or send me a link 
to any web page with examples or a good explanation on what do I need.
void WireGL::paintGL()
{

printf("On est ds paintgl. xTranslat = %f\n",xTranslat);
printf("Angles GLfloat phiRot, thetaRot, rhoRot : %f, %f, 
%f\n",phiRot,thetaRot,rhoRot);

glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

//trace le repère mondial
glColor3f((GLfloat)0.7, (GLfloat)0.0, (GLfloat)0.1);
axis(1,0,0,2);
axis(0,1,0,2);
axis(0,0,1,2);

//applique les transformations
glRotatef(phiRot,1,0,0);
glRotatef(thetaRot,0,1,0);
glRotatef(rhoRot,0,0,1);
glTranslatef(xTranslat,yTranslat,zTranslat);


glCallList(object);

//retourne dans le repère initial
glTranslatef(-xTranslat,-yTranslat,-zTranslat);
glRotatef(-rhoRot,0,0,1);
glRotatef(-thetaRot,0,1,0);
glRotatef(-phiRot,1,0,0);

glFlush();

}

--
Best Regards
M. Sc. Juan Manuel González Calleros 
Ph. D. Student

Université catholique de Louvain (UCL)
School of Management (IAG)
Unit of Information Systems (ISYS)

Place des Doyens, 1 (office a.036)
Louvain-la-Neuve, Belgium 
P.C. 1348 

E-mail: gonzalez@isys.ucl.ac.be
E-mail: jmgonzalez@inaoep.mx  
E-mail:jumagoca78@hotmail.com 
web: http://www.isys.ucl.ac.be/bchi/members/jgo/index.htm

Phone: +32 10/478349
Fax: +32 10/478324

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