Created
April 20, 2013 18:08
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Simple drawing example using Pycairo.
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from math import pi | |
from cairo import SVGSurface, Context, Matrix | |
WIDTH = 6 * 72 | |
HEIGHT = 4 * 72 | |
s = SVGSurface('example1.svg', WIDTH, HEIGHT) | |
c = Context(s) | |
# Transform to normal cartesian coordinate system | |
m = Matrix(yy=-1, y0=HEIGHT) | |
c.transform(m) | |
# Set a background color | |
c.save() | |
c.set_source_rgb(0.3, 0.3, 1.0) | |
c.paint() | |
c.restore() | |
# Draw some lines | |
c.move_to(0, 0) | |
c.line_to(2 * 72, 2* 72) | |
c.line_to(3 * 72, 1 * 72) | |
c.line_to(4 * 72, 2 * 72) | |
c.line_to(6 * 72, 0) | |
c.close_path() | |
c.save() | |
c.set_line_width(6.0) | |
c.stroke_preserve() | |
c.set_source_rgb(0.3, 0.3, 0.3) | |
c.fill() | |
c.restore() | |
# Draw a circle | |
c.save() | |
c.set_line_width(6.0) | |
c.arc(1 * 72, 3 * 72, 0.5 * 72, 0, 2 * pi) | |
c.stroke_preserve() | |
c.set_source_rgb(1.0, 1.0, 0) | |
c.fill() | |
c.restore() | |
# Save as a SVG and PNG | |
s.write_to_png('example1.png') | |
s.finish() |
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