> But the order of operations you apply to the transform is the reverse of what
> you might think will happen. One way to simplify the maths slightly is to
> generate the graph path using a fixed reference bounds of 1 x 1, located at
> the origin. Then you can directly use your view's size and position to scale
> and translate.
>
I've got it down to this which actually does what I want, even when I
resize the window, with the exception that it's also scaling the
stroke path, which I don't want. I'm trying to keep the stroke path
the same size, even thought I resize and scale the entire NSBezierPath
to the view size. Having a little trouble figuring out how to do this.
- (void) drawRect:(NSRect) rect
{
float realBoundFactor = 0.9;
NSRect bounds = [self bounds];
float xFactor = (bounds.size.width * realBoundFactor) / (pointCount);
float yFactor = (bounds.size.width * realBoundFactor) / (pointCount);
[[NSColor blackColor] setFill];
[NSBezierPath fillRect:bounds];
NSAffineTransform *newTransform = [NSAffineTransform transform];
[newTransform translateXBy:20.0 yBy:20.0];
[newTransform scaleXBy:xFactor yBy:yFactor];
[newTransform concat];
[self drawAxes:rect];
[self drawError:rect];
return;
}
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