Re: [Math] sin(), cos() not working? What special magic must I use to summon their powers?
Re: [Math] sin(), cos() not working? What special magic must I use to summon their powers?
- Subject: Re: [Math] sin(), cos() not working? What special magic must I use to summon their powers?
- From: Michael Robinson <email@hidden>
- Date: Sat, 4 Oct 2008 17:17:37 +1300
On 2/10/2008, at 5:29 AM, David Duncan wrote:
On Oct 1, 2008, at 5:46 AM, Michael Robinson wrote:
Unsurprisingly, I need my hand held again.
1. how do I initialize a CGShading object, with my two colours
(left right/top bottom)
See the Quartz 2D Shadings sample at <http://developer.apple.com/samplecode/Quartz2DShadings/index.html
>
The sample code runs on 10.5, but the shadings code should work on
10.4 as well (the sample only runs on 10.5 because it also uses the
CGGradientRef APIs).
Thank you for this, but it confuses my feeble mind.
Instead I happened upon the "NSGradient" object, and used that while I
built other parts of the image creation section of my plugin.
Now I'd like to replace this:
NSGradient* aGradient = [[[NSGradient alloc]
initWithColorsAndLocations:[gradientColour1 color], (CGFloat)0.0,
[gradientColour2 color], (CGFloat)1.0,nil] autorelease];
[aGradient drawInBezierPath:aPath angle:[gradientOpacitySlider
floatValue]];
With a 10.4 compatible solution.
Though I'm sure the solution *is* in the project you referred me too,
I can' t see it. I apologize for my ineptitude.
Is there a one-liner I can use to replace my current code?
Thank you for your patience
Mike
2. how do I fill my NSBitmapImageRep with this pretty gradient?
Create an NSGraphicsContext with the image rep, then get the
CGContext from the NSGraphicsContext. The latter is shown in the
sample above, although the former is not.
--
David Duncan
Apple DTS Animation and Printing
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