Please have a look at the code.
When apllication launches, you can see a rotation with the preset angle, but changing the angle via UI has no
result. The debugger stops at the break point in drawRect, the new angle is displayed in the variable view,
but it seems, that openGL ignores the update.
If I replace [self rotateX] in drawRect with a constant, rotation takes place.
I cannot make senese of this behaviour.
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Yes, I see that now. I guess I should look it up and not go from memory....
So...
Something is odd....
You have
rotateX = 30.0;
Your getter...
GLfloat)rotateX {return rotateX;}
but the console prints "32.56" on this line, yes?
NSLog(@"rx = %.2f \n", rx); // console: rx = 32.56
I'd look for a problem with my stack.
This makes no sense to me at all. I'd expect it to be exactly the same as the value I just set.. ie, 30.0.
But i'd not name my member variable "rotateX" and my getter "rotateX".
-john
So, is
rotateX
a member? or a method? is it a getter?
This looks a lot like objective C to me, but I'm unsure exactly what's going on here.
Should this be something like
@property GLfloat rotateX;
Sorry about these newbie questions, but I'm not an objective C expert, and I don't code on the mac.
Can we try renaming the method
-(GLfloat)rotateX {return rotateX;}
to something like
(GLfloat)getRotateX { return rotateX; }
to see what breaks?
-john
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by: jgordosPosted on 2008-06-16 at 11:02:58ID: 21795956
I think you're not supplying radians, but you're supplying normal angles.
Make sure you are using RADIANs and not normal 360 degree angles of rotation.
-john