## [PyX-checkins] pyx/design palettetest.py,NONE,1.1

 [PyX-checkins] pyx/design palettetest.py,NONE,1.1 From: Michael Schindler - 2006-02-11 18:35:47 ```Update of /cvsroot/pyx/pyx/design In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv17826/design Added Files: palettetest.py Log Message: use this for testing the quality of a nonlinear palette definition --- NEW FILE: palettetest.py --- #!/usr/bin/env python # -*- coding: ISO-8859-15 -*- import sys sys.path.insert(0, "..") import math from math import * from pyx import * from pyx.graph import axis, data # define some functions for the color values: def red(x): return 2*x*(1-x)**5 + 3.5*x**2*(1-x)**3 + 2.1*x*x*(1-x)**2 + 3.0*x**3*(1-x)**2 + x**0.5*(1-(1-x)**2) def green(x): return 1.5*x**2*(1-x)**3 - 0.8*x**3*(1-x)**2 + 2.0*x**4*(1-x) + x**4 def blue(x): return 5*x*(1-x)**5 - 0.5*x**2*(1-x)**3 + 0.3*x*x*(1-x)**2 + 5*x**3*(1-x)**2 + 0.5*x**6 # use the implemented converter for the grey value: def grey(x): return color.rgb(red(x), green(x), blue(x)).grey().color["gray"] # plot the color values g = graph.graphxy(width=10, ratio=1) g.plot(data.function("y(x)=red(x)", min=0, max=1, context=locals()), [graph.style.line([color.rgb.red])]) g.plot(data.function("y(x)=green(x)", min=0, max=1, context=locals()), [graph.style.line([color.rgb.green])]) g.plot(data.function("y(x)=blue(x)", min=0, max=1, context=locals()), [graph.style.line([color.rgb.blue])]) g.plot(data.function("y(x)=grey(x)", min=0, max=1, context=locals())) # plot the colors n = 200 x = 0 for i in range(n): t = i * 1.0 / (n-1) g.fill(path.rect(x, -2, 10.5/(n-1), 1), [color.rgb(red(t), green(t), blue(t))]) x += 10.0 / n g.writeEPSfile("palettetest", paperformat=document.paperformat.A4) g.writePDFfile("palettetest") ```

 [PyX-checkins] pyx/design palettetest.py,NONE,1.1 From: Michael Schindler - 2006-02-11 18:35:47 ```Update of /cvsroot/pyx/pyx/design In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv17826/design Added Files: palettetest.py Log Message: use this for testing the quality of a nonlinear palette definition --- NEW FILE: palettetest.py --- #!/usr/bin/env python # -*- coding: ISO-8859-15 -*- import sys sys.path.insert(0, "..") import math from math import * from pyx import * from pyx.graph import axis, data # define some functions for the color values: def red(x): return 2*x*(1-x)**5 + 3.5*x**2*(1-x)**3 + 2.1*x*x*(1-x)**2 + 3.0*x**3*(1-x)**2 + x**0.5*(1-(1-x)**2) def green(x): return 1.5*x**2*(1-x)**3 - 0.8*x**3*(1-x)**2 + 2.0*x**4*(1-x) + x**4 def blue(x): return 5*x*(1-x)**5 - 0.5*x**2*(1-x)**3 + 0.3*x*x*(1-x)**2 + 5*x**3*(1-x)**2 + 0.5*x**6 # use the implemented converter for the grey value: def grey(x): return color.rgb(red(x), green(x), blue(x)).grey().color["gray"] # plot the color values g = graph.graphxy(width=10, ratio=1) g.plot(data.function("y(x)=red(x)", min=0, max=1, context=locals()), [graph.style.line([color.rgb.red])]) g.plot(data.function("y(x)=green(x)", min=0, max=1, context=locals()), [graph.style.line([color.rgb.green])]) g.plot(data.function("y(x)=blue(x)", min=0, max=1, context=locals()), [graph.style.line([color.rgb.blue])]) g.plot(data.function("y(x)=grey(x)", min=0, max=1, context=locals())) # plot the colors n = 200 x = 0 for i in range(n): t = i * 1.0 / (n-1) g.fill(path.rect(x, -2, 10.5/(n-1), 1), [color.rgb(red(t), green(t), blue(t))]) x += 10.0 / n g.writeEPSfile("palettetest", paperformat=document.paperformat.A4) g.writePDFfile("palettetest") ```