trying to get my star to move and stop at a certain point

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I got my particle system out but now my star that is formed keeps growing and I dont know how to stop it....
I am using glTranslated() and am setting the z value so that it will stop translating at that point in the z axis but it is not working as desired. Any ideas?

This is my function to set the z value:

const double z = 0.0;
const double movez = z + 0.01;
else {
     if(movez >= 20.0){          
       float  movez = 20.0; 
     }
          
     glColor3f(1.0,1.0,1.0);
     glPushMatrix();
     glTranslated(0,0,movez);
     glutSolidSphere(14,40,40);
     glPopMatrix();   
}

Thanks

Posted 16-Apr-11 18:25pm

indranie

Updated 16-Apr-11 19:24pm

Sandeep Mewara

v2

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Santhosh G_ · Answer 1 · 2011-06-30T06:14:00

MIDL

glColor3f(1.0,1.0,1.0);
    glPushMatrix();
    glTranslated(0,0,movez);
    glutSolidSphere(14,40,40);
    glPopMatrix();

glTranslated multiplies current matrix by a translation matrix.
Each rendering multiply previous matrix, which cause translation on translated matrix.
We can solve this issue by resetting current matrix with identity matrix.

MIDL

glColor3f(1.0,1.0,1.0);
     glPushMatrix();
     glLoadIdentity();// This will load identity matrix.
     glTranslated(0,0,movez);
     glutSolidSphere(14,40,40);
     glPopMatrix();