50 lines
2.6 KiB
Python
50 lines
2.6 KiB
Python
#!/usr/bin/python
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# -*- coding: iso-8859-1 -*-
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# This script is used to generate colormaps for paraview (www.paraview.org)
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# The script writes 360 files. Each file contains one colormap.
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# More information on the used colors space can be found at http://en.wikipedia.org/wiki/HSL_and_HSV
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# written by M. Diehl, m.diehl@mpie.de
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import math
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print '******************************************************************************'
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print ' Write colormaps for paraview'
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print ''
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print 'Suitable for datasets that have only positive/negative values'
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print 'The colors are described using the HSL model.'
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print 'Each of the 360 generated colormaps uses one value of (H)ue.'
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print 'The colormaps runs at constant H from given (L)ightness and (S)aturation'
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print 'to given L and S'
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print 'L is distribute linearly, S changes as the square root of a linear list.'
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print 'Suitable values: L_start = S_start = 1 , L_end = S_end = 0.'
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print '******************************************************************************'
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print ''
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startL = float(raw_input('Please enter start value for (L)ightness: '))
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endL = float(raw_input('Please enter end value for L: '))
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startS = float(raw_input('Please enter start value for (S)aturation: '))
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endS = float(raw_input('Please enter end value for S: '))
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steps = int(raw_input('Please enter steps/resolution: '))
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for h in range(0,360):
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colormap = open('colormap_' + str(h) + '.xml',"w")
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colormap.write('<ColorMap name = "' + str(h) + '" space = "RGB">\n')
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for i in range(0,steps+1):
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h_strich = h/60.0
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if(h_strich>6.0):
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h_strich = h_strich-6.0
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c = (1- abs(2*(startL + i*(endL-startL)/steps)-1))*math.sqrt(startS + i*(endS-startS)/steps)
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x = c*(1- abs(h_strich%2-1))
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m = (startL + i*(endL-startL)/steps) -.5*c
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if (0.0 <= h_strich)and(h_strich<1.0):
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colormap.write('<Point x="'+str(i)+'" o="1" r="'+str(c+m)+'" g="'+str(x+m)+'" b="'+str(0.0+m)+'"/>\n')
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elif (1.0 <= h_strich)and(h_strich<2.0):
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colormap.write('<Point x="'+str(i)+'" o="1" r="'+str(x+m)+'" g="'+str(c+m)+'" b="'+str(0.0+m)+'"/>\n')
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elif (2.0 <= h_strich)and(h_strich<3.0):
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colormap.write('<Point x="'+str(i)+'" o="1" r="'+str(0.0+m)+'" g="'+str(c+m)+'" b="'+str(x+m)+'"/>\n')
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elif (3.0 <= h_strich)and(h_strich<4.0):
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colormap.write('<Point x="'+str(i)+'" o="1" r="'+str(0.0+m)+'" g="'+str(x+m)+'" b="'+str(c+m)+'"/>\n')
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elif (4.0 <= h_strich)and(h_strich<5.0):
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colormap.write('<Point x="'+str(i)+'" o="1" r="'+str(x+m)+'" g="'+str(0.0+m)+'" b="'+str(c+m)+'"/>\n')
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elif (5.0 <= h_strich)and(h_strich<=6.0):
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colormap.write('<Point x="'+str(i)+'" o="1" r="'+str(c+m)+'" g="'+str(0.0+m)+'" b="'+str(x+m)+'"/>\n')
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colormap.write('</ColorMap>') |