[00101001]

lets say i have a function that increments the size of a circle from 1 to 100...

so i have my function:

- (void)startGame id)sender {
for(x = 10 ; x < 100 ; x++) {
//x is the size of the circle
[self setNeedsDisplay:YES];
}
}

How do I tell is to pause for like 0.1 seconds so it can redraw, because right now, it jumps from 1 to 100 instantaneously. Is there a sleep function like in Java?


Thanks for your help


ALSO: Is it possible to draw a semitransparent object like a circle?

[This message has been edited by 00101001 (edited 05-01-2001).]

[mr_sonicblue]

The proper way would be to start an NSTimer to fire that method every .1 seconds.

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[00101001]

Thanks for the tip, ill try that now.
How about drawing semitransparent stuff though?
I looked through the manuals, and couldn't really figure it out (im rather new at this stuff)

Thanks!

[parallax]

If you wanted to set the color (with an alpha), use NSColor's colorWithCalibratedRGB(red, green, blue, alpha) and set() functions, then draw the oval.

[00101001]

Sorry, im new...
this is how I think I know how to do it:
[[NSColor colorWithCalibratedRGB:0.5:0.5:0.5:0.5] set];

but when I compile it gives me:

cannot find class (factory) method.
return type for 'colorWithCalibratedRGB::::' defaults to id

what am I doing wrong?

[mr_sonicblue]

Originally posted by 00101001:
Sorry, im new...
this is how I think I know how to do it:
[[NSColor colorWithCalibratedRGB:0.5:0.5:0.5:0.5] set];

It should be like this:

[[NSColor colorWithCalibratedRed:0.5 green:0.5 blue:0.5 alpha:0.5] set];

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[parallax]

Oh, heh. I just saw "Java" in your post and assumed you were using Java. Maybe I should read more carefully next time :-)

[00101001]

SWEET!!!!
thanks for your help.

Next step: porting my 3D engine to Cocoa, stay tuned!