position for texture in opengl

Posted by Tyzak on Stack Overflow See other posts from Stack Overflow or by Tyzak
Published on 2010-05-11T18:01:02Z Indexed on 2010/05/11 18:04 UTC
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hello, i have a question concerning how to declare the points for a texture on a cube

to be exactly i mean the:

glTexCoord2f(x.f, y.f);

for the front side, my declaration works:

glBegin(GL_POLYGON);   //Vorderseite
        glNormal3f(0.0f, 0.0f, 1.0f);//normale für vorderseite

    glTexCoord2f(0.0f, -1.f);
    glVertex3f(-fSeitenL/2.0f,-fSeitenL/2.0f,+fSeitenL/2.0f);

    glTexCoord2f(1.f, -1.f);
    glVertex3f(+fSeitenL/2.0f,-fSeitenL/2.0f,+fSeitenL/2.0f);

    glTexCoord2f(1.f, 0.0f);
    glVertex3f(+fSeitenL/2.0f,+fSeitenL/2.0f,+fSeitenL/2.0f); 

    glTexCoord2f(0.0f, 0.0f);
    glVertex3f(-fSeitenL/2.0f,+fSeitenL/2.0f,+fSeitenL/2.0f);
    glEnd();

but for the right side, it doesn't work, i suggest i need other parameters, for glTexCoord2f, but i don't know witch one.

glBegin(GL_POLYGON);   //Rechte Seite

    glNormal3f(1.0f, 0.0f, 0.0f); //normale für rechte seite

    glTexCoord2f(0.0f, -1.f);
    glVertex3f(+fSeitenL/2.0f,-fSeitenL/2.0f,+fSeitenL/2.0f);

    glTexCoord2f(1.0f, -1.f);
    glVertex3f(+fSeitenL/2.0f,-fSeitenL/2.0f,-fSeitenL/0.0f);

    glTexCoord2f(1.0f, 0.0f);
    glVertex3f(+fSeitenL/2.0f,+fSeitenL/2.0f,-fSeitenL/0.0f);

    glTexCoord2f(0.0f, 0.0f);
    glVertex3f(+fSeitenL/2.0f,+fSeitenL/2.0f,+fSeitenL/0.0f);
    glEnd();

after all i close the "texture-declaration with"

glDisable(GL_TEXTURE_2D);

thanks in advance

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