Color Objects: Difference between revisions
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m (corrected web page reference for RLC's web site) |
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# HSV to RGB routine taken from Robert L. Campbell's color_b.py script | # HSV to RGB routine taken from Robert L. Campbell's color_b.py script | ||
# See http:// | # See http://pldserver1.biochem.queensu.ca/~rlc/work/pymol/ | ||
# Original algorithm from: http://www.cs.rit.edu/~ncs/color/t_convert.html | # Original algorithm from: http://www.cs.rit.edu/~ncs/color/t_convert.html | ||
def hsv_to_rgb(hsv): | def hsv_to_rgb(hsv): |
Revision as of 16:39, 23 June 2008
#####################################################################
#
# Colour by object
#
#####################################################################
def color_obj(rainbow=0):
"""
AUTHOR
Gareth Stockwell
USAGE
color_obj(rainbow=0)
This function colours each object currently in the PyMOL heirarchy
with a different colour. Colours used are either the 22 named
colours used by PyMOL (in which case the 23rd object, if it exists,
gets the same colour as the first), or are the colours of the rainbow
"""
# Process arguments
rainbow = int(rainbow)
# Get names of all PyMOL objects
obj_list = cmd.get_names('models')
if rainbow:
print "\nColouring objects as rainbow\n"
nobj = len(obj_list)
# Create colours starting at blue(240) to red(0), using intervals
# of 240/(nobj-1)
for j in range(nobj):
hsv = (240-j*240/(nobj-1), 1, 1)
# Convert to RGB
rgb = hsv_to_rgb(hsv)
# Define the new colour
cmd.set_color("col" + str(j), rgb)
print obj_list[j], rgb
# Colour the object
cmd.color("col" + str(j), obj_list[j])
else:
print "\nColouring objects using PyMOL defined colours\n"
# List of available colours
colours = ['red', 'green', 'blue', 'yellow', 'violet', 'cyan', \
'salmon', 'lime', 'pink', 'slate', 'magenta', 'orange', 'marine', \
'olive', 'purple', 'teal', 'forest', 'firebrick', 'chocolate', \
'wheat', 'white', 'grey' ]
ncolours = len(colours)
# Loop over objects
i = 0
for obj in obj_list:
print " ", obj, colours[i]
cmd.color(colours[i], obj)
i = i+1
if(i == ncolours):
i = 0
# HSV to RGB routine taken from Robert L. Campbell's color_b.py script
# See http://pldserver1.biochem.queensu.ca/~rlc/work/pymol/
# Original algorithm from: http://www.cs.rit.edu/~ncs/color/t_convert.html
def hsv_to_rgb(hsv):
h = float(hsv[0])
s = float(hsv[1])
v = float(hsv[2])
if( s == 0 ) :
#achromatic (grey)
r = g = b = v
else:
# sector 0 to 5
h = h/60.
i = int(h)
f = h - i # factorial part of h
#print h,i,f
p = v * ( 1 - s )
q = v * ( 1 - s * f )
t = v * ( 1 - s * ( 1 - f ) )
if i == 0:
(r,g,b) = (v,t,p)
elif i == 1:
(r,g,b) = (q,v,p)
elif i == 2:
(r,g,b) = (p,v,t)
elif i == 3:
(r,g,b) = (p,q,v)
elif i == 4:
(r,g,b) = (t,p,v)
elif i == 5:
(r,g,b) = (v,p,q)
else:
(r,g,b) = (v,v,v)
print "error, i not equal 1-5"
return [r,g,b]
# Add color_obj to the PyMOL command list
cmd.extend("color_obj",color_obj)