cortesi/scurve
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Add option to specify background colour to drawcurve.

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This commit is contained in:
Aldo Cortesi 2010-07-13 21:11:23 +12:00
parent 552b91da30
commit 0e238f76a2
3 changed files with 19 additions and 6 deletions
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6
cube
View File

@ -26,9 +26,11 @@ camera {
location <50, 50, -200> location <50, 50, -200>
look_at <0, 0, 0> look_at <0, 0, 0>
rotate z*270 rotate z*270
rotate x*25
rotate y*10
} }
background { color red 1 green 1 blue 1 } background { color red 0 green 0 blue 0 }
light_source { light_source {
<50, 30, -200> color red 1 green 1 blue 1 <50, 30, -200> color red 1 green 1 blue 1
@ -50,7 +52,7 @@ blob {
sphere { sphere {
<@!lines[0][0][0]!@, @!lines[0][0][1]!@, @!lines[0][0][2]!@>, <@!lines[0][0][0]!@, @!lines[0][0][1]!@, @!lines[0][0][2]!@>,
6, 1 6, 1
pigment { color red 0 green 1 blue 0 } pigment { color red 0.5 green 0.5 blue 1 }
} }
pigment { color red 0.5 green 0.5 blue 1 } pigment { color red 0.5 green 0.5 blue 1 }
finish { ambient 0.2 diffuse 0.8 phong 1 } finish { ambient 0.2 diffuse 0.8 phong 1 }

12
drawcurve
View File

@ -10,6 +10,9 @@ def main():
version="%prog 0.1", version="%prog 0.1",
) )
parser.add_option("-c", "--color", action="store", dest="color", default="0A2376") parser.add_option("-c", "--color", action="store", dest="color", default="0A2376")
parser.add_option(
"-b", "--background", action="store", dest="background", default="FFFFFF"
)
parser.add_option( parser.add_option(
"-s", "--size", action="store", "-s", "--size", action="store",
type="int", dest="size", default=100 type="int", dest="size", default=100
@ -47,7 +50,14 @@ def main():
else: else:
parser.error("Must specify either points or order.") parser.error("Must specify either points or order.")
d = draw.Demo(c, options.size, options.color, options.dotsize, *options.mark) d = draw.Demo(
c,
options.size,
options.color,
options.background,
options.dotsize,
*options.mark
)
d.draw() d.draw()
d.save(args[0]) d.save(args[0])

7
scurve/draw.py
View File

@ -9,7 +9,7 @@ class Canvas:
def ctx(self): def ctx(self):
return cairo.Context(self.surface) return cairo.Context(self.surface)
def background(self, r, g, b, a): def background(self, r, g, b, a=1):
c = self.ctx() c = self.ctx()
c.set_source_rgba(r, g, b, a) c.set_source_rgba(r, g, b, a)
c.rectangle(0, 0, self.width, self.height) c.rectangle(0, 0, self.width, self.height)
@ -38,11 +38,12 @@ class Demo:
Draws a 2d curve within a specified square. Draws a 2d curve within a specified square.
""" """
PAD = 5 PAD = 5
def __init__(self, curve, size, color, dotsize, *marks): def __init__(self, curve, size, color, background, dotsize, *marks):
self.curve = curve self.curve = curve
self.size, self.color, self.dotsize = size, color, dotsize self.size, self.color, self.dotsize = size, color, dotsize
self.background = background
self.c = Canvas(size+self.PAD*2, size+self.PAD*2) self.c = Canvas(size+self.PAD*2, size+self.PAD*2)
self.c.background(1, 1, 1, 1) self.c.background(*parseColor(self.background))
self.ctx = self.c.ctx() self.ctx = self.c.ctx()
self.ctx.set_line_width(1) self.ctx.set_line_width(1)
# Assuming all dimension sizes are equal # Assuming all dimension sizes are equal