OpenGL doesn't support the IRIS GL sphere library. You can replace your sphere library calls with quadrics routines from the GLU library. For more information about the GLU library, see the Open GL Programming Guide and OpenGL Utility library.
The following table lists the OpenGL quadrics functions.
| OpenGL Function | Meaning |
|---|---|
| gluNewQuadric | Create a new quadric object. |
| gluDeleteQuadric | Delete a quadric object. |
| gluQuadricCallback | Associate a callback with a quadric object, for error handling. |
| gluQuadricNormals | Specify normals: no normals, one per face, or one per vertex. |
| gluQuadricOrientation | Specify direction of normals: outward or inward. |
| gluQuadricTexture | Turn texture-coordinate generation on or off. |
| gluQuadricDrawstyle | Specify drawing style: polygons, lines, points, and so on. |
| gluSphere | Draw a sphere. |
| gluCylinder | Draw a cylinder or cone. |
| gluPartialDisk | Draw an arc. |
| gluDisk | Draw a circle or disk. |
You can use one quadric object for all quadrics you want to render in similar ways. The following code sample uses two quadric objects to draw four quadrics, two of them textured.
GLUquadricObj *texturedQuad, *plainQuad;
texturedQuad = gluNewQuadric(void);
gluQuadricTexture(texturedQuad, GL_TRUE);
gluQuadricOrientation(texturedQuad, GLU_OUTSIDE);
gluQuadricDrawStyle(texturedQuad, GLU_FILL);
plainQuad = gluNewQuadric(void);
gluQuadricDrawStyle(plainQuad, GLU_LINE);
glColor3f (1.0, 1.0, 1.0);
gluSphere(texturedQuad, 5.0, 20, 20);
glTranslatef(10.0, 10.0, 0.0);
gluCylinder(texturedQuad, 2.5, 5, 5, 10, 10);
glTranslatef(10.0, 10.0, 0.0);
gluDisk(plainQuad, 2.0, 5.0, 10, 10);
glTranslatef(10.0, 10.0, 0.0);
gluSphere(plainQuad, 5.0, 20, 20);