def __init__(self, cx=0.0, cy=0.0, ri=10, ro=20, num_points=4,
rotation=(-math.pi/6.0), stroke_width=3,
stroke_opacity=1.0, opacity=1.0, stroke=rgb(0,0,0),
fill=rgb(255, 255, 255)):
points = []
# For each point of a Star there are 2 sides
sides = 2 * num_points
for pt in xrange(sides):
# Calculate the angle and its respective cosine and sine
# value for clairity.
angle = rotation + (2.0*math.pi/sides)*pt
cos_a = math.cos(angle)
sin_a = math.sin(angle)
if pt % 2 == 0:
# Calculate the inner point for even numbered points.
x = cx + ri * cos_a
y = cy + ri * sin_a
else:
# Calculate the outer point for odd numbered points.
x = cx + ro * cos_a
y = cy + ro * sin_a
points.append((x,y))
Polygon.__init__(self, points=points, stroke_width=stroke_width,
stroke_opacity=stroke_opacity, stroke=stroke,
fill=fill)
def __init__(self, cx=0.0, cy=0.0, sides=10, side_length=10,
rotation=0.0, stroke_width=3,
stroke_opacity=1.0, opacity=1.0, stroke=rgb(0,0,0),
fill=rgb(255, 255, 255)):
points = []
for pt in xrange(sides):
# Find the angle as the fraction of the circle that
# defines the outer points of the polygon.
angle = rotation + (2.0*math.pi/sides)*pt
# Standard trig-operations to find x and y of the point at
# that angle.
x = cx + side_length * math.cos(angle)
y = cy + side_length * math.sin(angle)
points.append((x,y))
Polygon.__init__(self, points=points, stroke_width=stroke_width,
stroke_opacity=stroke_opacity, stroke=stroke,
fill=fill)
def xml_parse_handler(xml_elem):
return Polygon.xml_parse_handler(xml_elem)
def to_node(self):
node = Polygon.to_node(self)
node.setAttribute(SVGENESIS_TYPE, 'Triangle')
return node
def __init__(self, points=((0,0), (0,0), (0,0)), stroke_width=3,
stroke_opacity=1.0, opacity=1.0, stroke=rgb(0,0,0),
fill=rgb(255, 255, 255)):
Polygon.__init__(self, points=points, stroke_width=stroke_width,
stroke_opacity=stroke_opacity, stroke=stroke,
fill=fill)
def to_node(self):
node = Polygon.to_node(self)
# Add the extra information to the XML tag to help parsing to
# the object from XML.
node.setAttribute(SVGENESIS_TYPE, 'EquilateralTriangle')
return node
