colorhue.xm

一个很好的分子动力学程序

#######################################################################
#                                                                     #
#  Example:  Plotting Color                                           #
#                                                                     #
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#                                                                     #
#    XMD can produce color plots on a color postscript printer.       #
#  There are two methods of specifying color, RGB (red green blue)    # 
#  and HSB (hue saturation brighness).  The following example         #
#  draw 64 atoms of varying hue, saturation and brightness            #
#                                                                     #
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debug on
#
#
#  Make 3D simple cubic lattice
#
box 4 4 4
particle 1
1  0.50 0.50 0.50
dup  3  1 0 0
dup  3  0 1 0
dup  3  0 0 1
#
#  Set up plot parameters required by both plots
#
# Postscript Printer
plot device postscript
# Number of pages
plot page 1
# Number of layers
plot layer 4
# Orientation of plot (vertical axis y, horizontal axis x)
plot orient y/x
#
#  Give each layer  its own hue
#  Give each column its own saturation
#  Give each row    its own brigtness
#
#   Assign atom colors
#   Select each atom in sequence, and assign hue
#   from 0 to 63/64.  Saturation  and Brightness are 1.
calc  index = 0
repeat 4
   repeat 4
		repeat 4
			calc hue   = index / 64
  			calc index = index + 1

			#   Select each atom in sequence
			select index index

			#   Assign hue, saturation and brightness 
			plot  symbol fill  hsb   HUE  1 1  cir  0.125
		end
	end
end
#
#  Plot
#
# Plot label
label 8

EXAMPLE: colorhue.xm

All atoms have saturation and brightness value of 1.
Hue values vary from 0 to 63/64 in steps of 1/64.



# plot to output postscript file
plot write colorhue.ps