A Paste by godecho

1

subdivisions += subdivisions%4; static const float PI = 3.1415926535897932384626433832795f; static const float TWOPI = 2.0f*PI; static const float PID2 = PI/2.0f; for(unsigned int j = 0; j < subdivisions/2; ++j)        // generates strips from bottom to top     {         offset.y = (j < subdivisions/4) ? -dist : dist;         theta1 = j * TWOPI / subdivisions - PID2;         theta2 = (j + 1) * TWOPI / subdivisions - PID2;         glBegin(GL_QUAD_STRIP);             for(unsigned int i = 0; i < subdivisions; ++i)    // around the sphere             {                                  Point3f p1;                 Point3f p2;                                  theta3 = i * TWOPI / subdivisions;                 e.x = cos(theta2) * cos(theta3);                 e.y = sin(theta2);                 e.z = cos(theta2) * sin(theta3);                 p1.x = center.x + radius * e.x;                 p1.y = center.y + radius * e.y;                 p1.z = center.z + radius * e.z;                 glNormal3f(e.x, e.y, e.z);                 glTexCoord2f(i/(float)subdivisions, 2*(j+1)/(float)subdivisions);                 glVertex3f(p1.x, p1.y, p1.z);                 e.x = cos(theta1) * cos(theta3);                 e.y = sin(theta1);                 e.z = cos(theta1) * sin(theta3);                 p2.x = center.x + radius * e.x;                 p2.y = center.y + radius * e.y;                 p2.z = center.z + radius * e.z;                 glNormal3f(e.x, e.y, e.z);                 glTexCoord2f(i/(float)subdivisions, 2*j/(float)subdivisions);                 glVertex3f(p2.x, p2.y, p2.z);                 }             }         glEnd();     }