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#!/usr/bin/env python
import sys; sys.path[:0] = ["../.."]
from pyx import *
from pyx.path import *
def bboxrect(cmd):
return cmd.bbox().rect()
def drawpathwbbox(c, p):
c.stroke(p, [color.rgb.red])
np = p.normpath()
c.stroke(np, [color.rgb.green, style.linestyle.dashed])
c.stroke(bboxrect(p))
def testarcbbox(c):
for phi in range(0,360,30):
drawpathwbbox(c,path(arc(phi*0.1, phi*0.1, 1, 0, phi)))
for phi in range(0,360,30):
drawpathwbbox(c,path(arc(phi*0.1, 5+phi*0.1, 1, phi, 360)))
for phi in range(0,360,30):
drawpathwbbox(c,path(arc(phi*0.1, 10+phi*0.1, 1, phi, phi+30)))
for phi in range(0,360,30):
drawpathwbbox(c,path(arc(phi*0.1, 15+phi*0.1, 1, phi, phi+120)))
for phi in range(0,360,30):
drawpathwbbox(c,path(arc(phi*0.1, 20+phi*0.1, 1, phi, phi+210)))
for phi in range(0,360,30):
drawpathwbbox(c,path(arc(phi*0.1, 25+phi*0.1, 1, phi, phi+300)))
for phi in range(0,360,30):
drawpathwbbox(c,path(arc(phi*0.1, 30+phi*0.1, 1, phi, phi+390)))
for phi in range(0,360,30):
drawpathwbbox(c,path(moveto(20+phi*0.1, phi*0.09),
arc(20+phi*0.1, phi*0.1, 1, 0, phi)))
for phi in range(0,360,30):
drawpathwbbox(c,path(moveto(20+phi*0.1, 5+phi*0.11),
arc(20+phi*0.1, 5+phi*0.1, 1, 0, phi)))
for phi in range(0,360,30):
drawpathwbbox(c,path(moveto(20+phi*0.1, 10+phi*0.09),
arcn(20+phi*0.1, 10+phi*0.1, 1, 0, phi)))
for phi in range(0,360,30):
drawpathwbbox(c,path(moveto(20+phi*0.1, 15+phi*0.11),
arcn(20+phi*0.1, 15+phi*0.1, 1, 0, phi)))
for phi in range(0,360,30):
drawpathwbbox(c,path(moveto(50+phi*0.1, phi*0.09),
arc(50+phi*0.1, phi*0.1, 1, 0, phi),
rlineto(1,1)))
for phi in range(0,360,30):
drawpathwbbox(c,path(moveto(50+phi*0.1, 5+phi*0.11),
arc(50+phi*0.1, 5+phi*0.1, 1, 0, phi),
rlineto(1,1)))
for phi in range(0,360,30):
drawpathwbbox(c,path(moveto(50+phi*0.1, 10+phi*0.09),
arcn(50+phi*0.1, 10+phi*0.1, 1, 0, phi),
rlineto(1,1)))
for phi in range(0,360,30):
drawpathwbbox(c,path(moveto(50+phi*0.1, 15+phi*0.11),
arcn(50+phi*0.1, 15+phi*0.1, 1, 0, phi),
rlineto(1,1)))
def testcurvetobbox(c):
drawpathwbbox(c,path(moveto(10,60), curveto(12,66,14,65,12,69)))
def testtrafobbox(c):
sc=c.insert(canvas.canvas([trafo.translate(0,40).rotated(10)]))
p=path(moveto(10,10), curveto(12,16,14,15,12,19)); drawpathwbbox(sc,p)
p=path(moveto(5,17), curveto(6,18, 5,16, 7,15)); drawpathwbbox(sc,p)
def testclipbbox(c):
clip = canvas.clip(rect(11,-9,10,5))
p1 = path(moveto(10,-10), curveto(12,-4, 14,-5, 12,-1));
p2 = path(moveto(12,-8), curveto(6,-2, 5,-4, 7,-5));
# just a simple test for clipping
sc = c.insert(canvas.canvas([clip]))
drawpathwbbox(sc, p1)
drawpathwbbox(sc, p2)
# more complicated operations
# 1. transformation followed by clipping:
# in this case, the clipping path will be evaluated in the
# context of the already transformed canvas, so that the
# actually displayed portion of the path should be the same
sc = c.insert(canvas.canvas([trafo.translate(5,0), clip]))
drawpathwbbox(sc, p1)
drawpathwbbox(sc, p2)
# 2. clipping followed by transformation
# in this case, the clipping path will not be transformed, so
# that the display portionof the path should change
sc = c.insert(canvas.canvas([clip, trafo.translate(1,1)]))
drawpathwbbox(sc, p1)
drawpathwbbox(sc, p2)
c = canvas.canvas()
testarcbbox(c)
testcurvetobbox(c)
testtrafobbox(c)
testclipbbox(c)
c.writeEPSfile("test_bbox", page_paperformat=document.paperformat.A4, page_rotated=1, page_fittosize=1)
c.writePDFfile("test_bbox")
c.writeSVGfile("test_bbox")
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