[OpenJDK 2D-Dev] X11 uniform scaled wide lines and dashed lines; STROKE_CONTROL in Pisces

[Denis Lila]

Hello Jim.

> I'm assuming that the huge printout of "Roc roots=[<huge bunch of
> 0's>]" is meant to be a reassuring indication that the error of the 
> approximation is small?

That's something that should be completely ignored. To be honest,
I don't remember exactly what it was supposed to print, but I think
I somehow used it to convince myself that using points where
acceleration dot velocity == 0 as the endpoints for the false position
algorithm would be a good way to find roots of ROC(t) - w.

Regards,
Denis.

----- "Jim Graham" <james.graham at oracle.com> wrote:

> Hi Denis,
> 
> On 10/19/2010 10:40 AM, Denis Lila wrote:
> > Actually, I wrote a simple program to make sure the radius of
> curvature
> > function was correct. I have attached it. It's not a proof, but I
> think
> > it is convincing. Just hold down the mouse button and move it
> horizontally.
> > This will change the t value on the curve and the circle drawn will
> have
> > radius equal to Math.sqrt(ROCsq). You can also change the control
> points of
> > the curve. There's a bug where when you run it the window is really
> tiny, so
> > you have to manually resize it and maximize it.
> 
> 			...jim