def writePostscript(filename):
"Writes the current canvas to a postscript file."
#psfile = file(filename, 'w')
psfile = EPSFile(filename)
psfile.write(_canvas.postscript(pageanchor='sw',
y='0.c',
x='0.c'))
psfile.close()
#! /usr/bin/env python
from random import uniform
from psfile import EPSFile
fd = EPSFile("ex1.eps", 600, 100)
# dark gray background
fd.append("0.1 setgray")
fd.append("0 0 %d %d rectfill" % (fd.width, fd.height))
# a grid of dark orange lines
fd.append("1 .596 .118 setrgbcolor")
fd.append("1 setlinewidth")
for i in range(1, 5):
y = 100 * i / 5.0
fd.append("5 %.1f moveto 595 %.1f lineto" % (y, y))
for i in range(1, 30):
x = 100 * i / 5.0
fd.append("%.1f 5 moveto %.1f 95 lineto" % (x, x))
fd.append("stroke")
# randomly colored, filled squares
for i in range(0, 30):
x = i * 20 + 3
for j in range(0, 5):
y = j * 20 + 3
col = uniform(0, 1)
if 31 * uniform(0, 1) > i + 1:
fd.append("0 %.3f 0 setrgbcolor" % col)
else:
#! /usr/bin/env python
from __future__ import division
from random import uniform
from psfile import EPSFile
cols = 7
rows = 4
gap = 3
fd = EPSFile("ex4.eps", 350, 80)
fd.append("/Times-Roman findfont 8 scalefont setfont")
dx = (fd.width + gap) / cols
dy = (fd.height + gap) / rows
w = dx - gap
h = dy - gap
for j in range(0, rows):
for i in range(0, cols):
r = g = b = 0
while r + g + b < 1:
r, g, b = [uniform(0, 1), uniform(0, 1), uniform(0, 1)]
fd.append("%.1f %.1f %.1f setrgbcolor" % (r, g, b))
fd.append("%f %f %f %f rectfill" % (i * dx, j * dy, w, h))
fd.append("0 setgray")
fd.append("%f %f moveto" % (i * dx + 4, j * dy + 3))
fd.append("(%.1f, %.1f, %.1f) show" % (r, g, b))
fd.close()
#! /usr/bin/env python
from psfile import EPSFile
fd = EPSFile("ex5.eps", 350, 50)
# draw the yellow background
fd.append("1 1 0 setrgbcolor")
fd.append("0 0 %d %d rectfill"%(fd.width, fd.height))
# draw black circles filled with red
fd.append("0 setgray")
for x in range(25, 375, 50):
fd.append("""%f 25 20 0 360 arc
gsave
1 0 0 setrgbcolor
fill
grestore
stroke"""%x)
fd.close()
from random import vonmisesvariate
from psfile import EPSFile
# a sample from a von Mises distribution
sample = [ vonmisesvariate(pi/4, 1.0) for i in range(0,200) ]
# generate a histogram of the data
nhist = 4 * int(sqrt(len(sample))/4 + 0.5);
count = [ 0 ] * nhist
for x in sample:
y = x/(2*pi) % 1
count[int(y*nhist+.5)%nhist] += 1
# turn into a plot
radius = 72
fd = EPSFile("ex7.eps", 4*radius, 4*radius)
fd.append("/Times-Roman findfont 10 scalefont setfont")
fd.append("%f %f translate"%(2*radius, 2*radius))
fd.append("%f setlinewidth"%((2*pi*radius) / nhist - 1))
for k in count:
r = radius * (1 + .9*k/max(count))
fd.append("0 0 moveto %f 0 lineto"%r)
fd.append("%f -3 moveto (%d) show"%(r+3, k))
fd.append("%f rotate"%(360/nhist))
fd.append("stroke")
fd.append("""1 setlinewidth
0 0 %f 0 360 arc
gsave 1 setgray fill grestore stroke"""%radius)
fd.append("/Symbol findfont 24 scalefont setfont")
fd.append("-35 -10 moveto (k = 1.0) show")
fd.close()
#! /usr/bin/env python
from psfile import EPSFile
fd = EPSFile("ex2.eps", 100, 100)
fd.append("""
% outer square
0 0 moveto
100 0 lineto
100 100 lineto
0 100 lineto
closepath
% inner square, open to the left
10 10 moveto
90 10 lineto
90 90 lineto
10 90 lineto
% draw the constructed path
stroke
""")
fd.close()
#! /usr/bin/env python
from psfile import EPSFile
fd = EPSFile("ex5.eps", 350, 50)
# draw the yellow background
fd.append("1 1 0 setrgbcolor")
fd.append("0 0 %d %d rectfill" % (fd.width, fd.height))
# draw black circles filled with red
fd.append("0 setgray")
for x in range(25, 375, 50):
fd.append("""%f 25 20 0 360 arc
gsave
1 0 0 setrgbcolor
fill
grestore
stroke""" % x)
fd.close()
#! /usr/bin/env python
from psfile import EPSFile
fonts = [
"Times-Roman", "Times-Italic", "Times-Bold", "Times-BoldItalic",
"Helvetica", "Helvetica-Oblique", "Helvetica-Bold",
"Helvetica-BoldOblique", "Courier", "Courier-Oblique",
"Courier-Bold", "Courier-BoldOblique", "Symbol"
]
str = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
fd = EPSFile("ex6.eps", 420, len(fonts)*12)
for i, name in enumerate(reversed(fonts)):
fd.append("/TimesRoman findfont 10 scalefont setfont")
fd.append("0 %d moveto"%(12*i+3))
fd.append("(%s:) show"%name)
fd.append("/%s findfont 10 scalefont setfont"%name)
fd.append("100 %d moveto"%(12*i+3))
fd.append("(%s) show"%str)
fd.close()
def stampUV_Execute(fname, path, uvProj):
if uvProj.Count > 0:
path = XSIUtils.BuildPath(path, fname + ".eps")
from psfile import EPSFile
X = 1000
Y = 1000
fd = EPSFile(path, X, Y, margin=0)
for uv in uvProj:
if uv.Type == "uvspace":
geo = uv.Parent3DObject.Activeprimitive.Geometry
faces = geo.Facets
aUV = uv.elements.Array
aClusterIndices = uv.Parent.elements.Array
for face in faces:
fId = face.Index
#fd.append(" % face "+str(fId))
fd.append(" 1 setlinejoin")
samples = face.Samples
for i, sample in enumerate(samples):
id = sample.Index
x = aUV[0][id] * X
y = aUV[1][id] * Y
if i == 0:
fd.append(" " + str(x) + " " + str(y) + " moveto")
else:
fd.append(" " + str(x) + " " + str(y) + " lineto")
fd.append(" closepath")
fd.append("""
% draw the constructed path
stroke
""")
fd.close()
return true
#! /usr/bin/env python
from __future__ import division
from math import pow
from psfile import EPSFile
min_lw = .5
max_lw = 9
steps = 18
fd = EPSFile("ex3.eps", 350, 38,
margin_left=10+.5*min_lw, margin_right=10+.5*max_lw)
fd.append("/Times-Roman findfont 10 scalefont setfont")
for i in range(0, steps+1):
lw = min_lw * pow(max_lw/min_lw, i/steps)
x = fd.width*i/steps
fd.append("%.1f setlinewidth"%lw)
fd.append("%f 0 moveto 0 27 rlineto"%x)
fd.append("stroke")
fd.append("%f 30 moveto"%(x-6))
fd.append("(%.1f) show"%lw)
fd.close()
def stampUV_Execute(fname,path,uvProj):
if uvProj.Count > 0:
path = XSIUtils.BuildPath( path, fname+".eps" )
from psfile import EPSFile
X= 1000
Y= 1000
fd = EPSFile(path, X, Y, margin=0)
for uv in uvProj:
if uv.Type == "uvspace":
geo = uv.Parent3DObject.Activeprimitive.Geometry
faces = geo.Facets
aUV = uv.elements.Array
aClusterIndices = uv.Parent.elements.Array
for face in faces:
fId = face.Index
#fd.append(" % face "+str(fId))
fd.append(" 1 setlinejoin")
samples = face.Samples
for i,sample in enumerate(samples):
id= sample.Index
x = aUV[0][id]*X
y = aUV[1][id]*Y
if i == 0:
fd.append(" "+str(x)+" "+str(y)+" moveto")
else:
fd.append(" "+str(x)+" "+str(y)+" lineto")
fd.append(" closepath")
fd.append("""
% draw the constructed path
stroke
""")
fd.close()
return true