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Re: Reducing size of vector EPS / PDF output [message #91470 is a reply to message #91469]

Fri, 17 July 2015 06:31

Fabzi
Messages: 305
Registered: July 2010

Senior Member

On 07/17/2015 02:59 PM, David Fanning wrote:
>>> Ha! Thanks, David. The code is quite crytpic to me (3 calls to
>>> spl_interp!?), but it works and makes beautiful curves;-)
> I don't understand it either. Craig wrote it for me. I do know it has
> been one of the most useful utility routines in the Coyote Library for
> me.:-)

It seems to be quite close to SPLINE_P, I just found out. Howver, with
SPLINE_P you have to estimate the tangent at the junction point by
yourself. See the following example:

pro test_curvature

x = [0.5, 1.5, 1.5, 0.5, 0.5]
y = [0.3, 0.3, 1.3, 1.3, 0.3]

ArcSample, x, y, xas, yas
spline_p, x, y, xsp, ysp
t = [1., -1]
spline_p, x, y, xsp2, ysp2, TAN0=t, TAN1=t

cgPlot, [0, 2], [0, 2], /NODATA, /WINDOW
cgPlots, x, y, color='black', /WINDOW
cgPlots, xas, yas, color='red6', /WINDOW
cgPlots, xsp, ysp, color='blu6', /WINDOW
cgPlots, xsp2, ysp2, color='blu4', /WINDOW
cgLegend, Titles=['ArcSample', 'spline_p', 'spline_p tangent'], $
LINESTYLES=[0,0,0], COLORS=['red6', 'blu6', 'blu4'], $
/ADDCMD, LOCATION=[0.2, 1.8], /DATA

end

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[Message index]

		Reducing size of vector EPS / PDF output By: Fabzi on Thu, 16 July 2015 02:39
		Re: Reducing size of vector EPS / PDF output By: Craig Markwardt on Thu, 16 July 2015 11:38
		Re: Reducing size of vector EPS / PDF output By: Fabzi on Fri, 17 July 2015 01:54
		Re: Reducing size of vector EPS / PDF output By: David Fanning on Thu, 16 July 2015 18:53
		Re: Reducing size of vector EPS / PDF output By: Fabzi on Fri, 17 July 2015 02:19
		Re: Reducing size of vector EPS / PDF output By: David Fanning on Fri, 17 July 2015 05:59
		Re: Reducing size of vector EPS / PDF output By: Fabzi on Fri, 17 July 2015 06:31

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