Rescue of forgiven nice orphans
Lic. Edgar J. De Cleene
edgardec2001 at yahoo.com.ar
Thu May 25 19:51:14 UTC 2006
Milan , Serge (and others MathMorphs entusiasts)
I have a "one Page Web viewer" what could read text pages likes
http://wwwgroups.dcs.stand.ac.uk/~history/Curves/Curves.html
And just have the old Linear Algebra book and change set working as you see.
All in 6.3 Mb , about 1/3 of regular Squeak,
Now I beg Math Squeakers help me sending how to plot the curves with
XYPlotter or ThetaRhoPlotter
I copy from the site for Cardioid curve.
Cartesian equation:
(x2 + y2  2ax)2 = 4a2(x2 + y2)
Polar equation:
r = 2a(1 + cos())
And I have
example1
"Ask the resulting object to replot"
 answer 
answer _ self new.
answer dotSize: 5.
answer drawSteps: 8.
answer addFunction: (((Function constant: 4) + Function sin) asStretcher
freq: 4).
answer addFunction: (((Function constant: 4) + Function sin) asStretcher
freq: 4; xShift: Float pi / 4).
answer addFunction: (((Function constant: 4) + Function cos) asStretcher
freq: 4).
answer addFunction: (((Function constant: 4) + Function cos) asStretcher
freq: 4; xShift: Float pi / 4).
answer addFunction: (Function constant: 2.4).
answer addFunction: (Function constant: 5.6).
answer addFunction: (Function cos asStretcher freq: 4; amp: 2).
answer addFunction: (Function sin asStretcher freq: 4; amp: 2).
answer domain: (ClosedInterval from: 0 to: 2 * Float pi).
^answer
My spells works for have old code in new images, but I do not how math :=)
Help the orphans !!!
Edgar
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