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+%!PS-Adobe-3.0 EPSF-3.0
+%%Creator: (ImageMagick)
+%%Title: (prev.eps)
+%%CreationDate: (Fri Nov 5 11:45:35 2004)
+%%BoundingBox: 0 0 35 15
+%%HiResBoundingBox: 0 0 35 15
+%%DocumentData: Clean7Bit
+%%LanguageLevel: 1
+%%Pages: 1
+%%EndComments
+
+%%BeginDefaults
+%%EndDefaults
+
+%%BeginProlog
+%
+% Display a color image. The image is displayed in color on
+% Postscript viewers or printers that support color, otherwise
+% it is displayed as grayscale.
+%
+/DirectClassPacket
+{
+ %
+ % Get a DirectClass packet.
+ %
+ % Parameters:
+ % red.
+ % green.
+ % blue.
+ % length: number of pixels minus one of this color (optional).
+ %
+ currentfile color_packet readhexstring pop pop
+ compression 0 eq
+ {
+ /number_pixels 3 def
+ }
+ {
+ currentfile byte readhexstring pop 0 get
+ /number_pixels exch 1 add 3 mul def
+ } ifelse
+ 0 3 number_pixels 1 sub
+ {
+ pixels exch color_packet putinterval
+ } for
+ pixels 0 number_pixels getinterval
+} bind def
+
+/DirectClassImage
+{
+ %
+ % Display a DirectClass image.
+ %
+ systemdict /colorimage known
+ {
+ columns rows 8
+ [
+ columns 0 0
+ rows neg 0 rows
+ ]
+ { DirectClassPacket } false 3 colorimage
+ }
+ {
+ %
+ % No colorimage operator; convert to grayscale.
+ %
+ columns rows 8
+ [
+ columns 0 0
+ rows neg 0 rows
+ ]
+ { GrayDirectClassPacket } image
+ } ifelse
+} bind def
+
+/GrayDirectClassPacket
+{
+ %
+ % Get a DirectClass packet; convert to grayscale.
+ %
+ % Parameters:
+ % red
+ % green
+ % blue
+ % length: number of pixels minus one of this color (optional).
+ %
+ currentfile color_packet readhexstring pop pop
+ color_packet 0 get 0.299 mul
+ color_packet 1 get 0.587 mul add
+ color_packet 2 get 0.114 mul add
+ cvi
+ /gray_packet exch def
+ compression 0 eq
+ {
+ /number_pixels 1 def
+ }
+ {
+ currentfile byte readhexstring pop 0 get
+ /number_pixels exch 1 add def
+ } ifelse
+ 0 1 number_pixels 1 sub
+ {
+ pixels exch gray_packet put
+ } for
+ pixels 0 number_pixels getinterval
+} bind def
+
+/GrayPseudoClassPacket
+{
+ %
+ % Get a PseudoClass packet; convert to grayscale.
+ %
+ % Parameters:
+ % index: index into the colormap.
+ % length: number of pixels minus one of this color (optional).
+ %
+ currentfile byte readhexstring pop 0 get
+ /offset exch 3 mul def
+ /color_packet colormap offset 3 getinterval def
+ color_packet 0 get 0.299 mul
+ color_packet 1 get 0.587 mul add
+ color_packet 2 get 0.114 mul add
+ cvi
+ /gray_packet exch def
+ compression 0 eq
+ {
+ /number_pixels 1 def
+ }
+ {
+ currentfile byte readhexstring pop 0 get
+ /number_pixels exch 1 add def
+ } ifelse
+ 0 1 number_pixels 1 sub
+ {
+ pixels exch gray_packet put
+ } for
+ pixels 0 number_pixels getinterval
+} bind def
+
+/PseudoClassPacket
+{
+ %
+ % Get a PseudoClass packet.
+ %
+ % Parameters:
+ % index: index into the colormap.
+ % length: number of pixels minus one of this color (optional).
+ %
+ currentfile byte readhexstring pop 0 get
+ /offset exch 3 mul def
+ /color_packet colormap offset 3 getinterval def
+ compression 0 eq
+ {
+ /number_pixels 3 def
+ }
+ {
+ currentfile byte readhexstring pop 0 get
+ /number_pixels exch 1 add 3 mul def
+ } ifelse
+ 0 3 number_pixels 1 sub
+ {
+ pixels exch color_packet putinterval
+ } for
+ pixels 0 number_pixels getinterval
+} bind def
+
+/PseudoClassImage
+{
+ %
+ % Display a PseudoClass image.
+ %
+ % Parameters:
+ % class: 0-PseudoClass or 1-Grayscale.
+ %
+ currentfile buffer readline pop
+ token pop /class exch def pop
+ class 0 gt
+ {
+ currentfile buffer readline pop
+ token pop /depth exch def pop
+ /grays columns 8 add depth sub depth mul 8 idiv string def
+ columns rows depth
+ [
+ columns 0 0
+ rows neg 0 rows
+ ]
+ { currentfile grays readhexstring pop } image
+ }
+ {
+ %
+ % Parameters:
+ % colors: number of colors in the colormap.
+ % colormap: red, green, blue color packets.
+ %
+ currentfile buffer readline pop
+ token pop /colors exch def pop
+ /colors colors 3 mul def
+ /colormap colors string def
+ currentfile colormap readhexstring pop pop
+ systemdict /colorimage known
+ {
+ columns rows 8
+ [
+ columns 0 0
+ rows neg 0 rows
+ ]
+ { PseudoClassPacket } false 3 colorimage
+ }
+ {
+ %
+ % No colorimage operator; convert to grayscale.
+ %
+ columns rows 8
+ [
+ columns 0 0
+ rows neg 0 rows
+ ]
+ { GrayPseudoClassPacket } image
+ } ifelse
+ } ifelse
+} bind def
+
+/DisplayImage
+{
+ %
+ % Display a DirectClass or PseudoClass image.
+ %
+ % Parameters:
+ % x & y translation.
+ % x & y scale.
+ % label pointsize.
+ % image label.
+ % image columns & rows.
+ % class: 0-DirectClass or 1-PseudoClass.
+ % compression: 0-none or 1-RunlengthEncoded.
+ % hex color packets.
+ %
+ gsave
+ /buffer 512 string def
+ /byte 1 string def
+ /color_packet 3 string def
+ /pixels 768 string def
+
+ currentfile buffer readline pop
+ token pop /x exch def
+ token pop /y exch def pop
+ x y translate
+ currentfile buffer readline pop
+ token pop /x exch def
+ token pop /y exch def pop
+ currentfile buffer readline pop
+ token pop /pointsize exch def pop
+ /Times-Roman findfont pointsize scalefont setfont
+ x y scale
+ currentfile buffer readline pop
+ token pop /columns exch def
+ token pop /rows exch def pop
+ currentfile buffer readline pop
+ token pop /class exch def pop
+ currentfile buffer readline pop
+ token pop /compression exch def pop
+ class 0 gt { PseudoClassImage } { DirectClassImage } ifelse
+ grestore
+} bind def
+%%EndProlog
+%%Page: 1 1
+%%PageBoundingBox: 0 0 35 15
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+%%PageTrailer
+%%Trailer
+%%EOF
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 17:39:08 +0000