def node(leaves, x, y, angle, vpad=1.0):
"""Draws a node in the network
A node is a central oval with branching leaves.
Each leaf in the list is a string with its description.
"""
try:
from wordnet import _ctx
except:
pass
size = _ctx.fontsize()
_ctx.fontsize(size)
_ctx.oval(x-size*0.25, y-size*0.25, size*0.5, size*0.5)
#Defines a number of degrees to rotate
#each leaf branch. Leaves branch in relation
#to the node's branch, defined by the given angle.
ri = 300.0 / len(leaves)
ri = min(20, ri)
r0 = 0 - ri * (len(leaves)-1) * 0.5
w = size * 5
for leaf in leaves:
_ctx.push()
_ctx.transform(CORNER)
_ctx.translate(x,y)
_ctx.rotate(r0)
_ctx.line(0,0,w,0)
_ctx.oval(w-1,-1,2,2)
_ctx.translate(w+_ctx.textwidth(" "), size/3)
_ctx.rotate(float(-r0*0.5))
s = _ctx.stroke()
_ctx.nostroke()
#Depending on which font is used,
#the leaf text may (will) not align nicely
#to the middle of the leaf branch.
#vpad (vertical padding) can be used to
#correct this.
_ctx.text(" "+leaf, 0, 0, outline=True)
_ctx.stroke(s)
_ctx.rotate(r0*0.5)
_ctx.pop()
r0 += ri
def node(leaves, x, y, angle, vpad=1.0):
"""Draws a node in the network
A node is a central oval with branching leaves.
Each leaf in the list is a string with its description.
"""
try:
from wordnet import _ctx
except:
pass
size = _ctx.fontsize()
_ctx.fontsize(size)
_ctx.oval(x - size * 0.25, y - size * 0.25, size * 0.5, size * 0.5)
#Defines a number of degrees to rotate
#each leaf branch. Leaves branch in relation
#to the node's branch, defined by the given angle.
ri = 300.0 / len(leaves)
ri = min(20, ri)
r0 = 0 - ri * (len(leaves) - 1) * 0.5
w = size * 5
for leaf in leaves:
_ctx.push()
_ctx.transform(CORNER)
_ctx.translate(x, y)
_ctx.rotate(r0)
_ctx.line(0, 0, w, 0)
_ctx.oval(w - 1, -1, 2, 2)
_ctx.translate(w + _ctx.textwidth(" "), size / 3)
_ctx.rotate(float(-r0 * 0.5))
s = _ctx.stroke()
_ctx.nostroke()
#Depending on which font is used,
#the leaf text may (will) not align nicely
#to the middle of the leaf branch.
#vpad (vertical padding) can be used to
#correct this.
_ctx.text(" " + leaf, 0, 0, outline=True)
_ctx.stroke(s)
_ctx.rotate(r0 * 0.5)
_ctx.pop()
r0 += ri
def explode(name, nodes, x, y, max=40, vpad=1.0):
"""Draws a central point named with given name,
and branching nodes from that point.
"""
try: from wordnet import _ctx
except: pass
size = _ctx.fontsize()
_ctx.lineheight(1.2)
if _ctx.stroke() == None: _ctx.stroke(_ctx.fill())
_ctx.strokewidth(0.5)
#To avoid a clutter of node leaves,
#limit the number of nodes and shuffle them,
#so there is a random chance of nodes with
#a different amount of leaves appearing next
#to each other.
#This makes for a harmonious tree.
nodes = nodes[:max]
from random import shuffle
shuffle(nodes)
#Define a minimum number of degrees
#to rotate each branching node, based
#on the number of nodes.
ri = 360.0 / len(nodes)
ri = min(60, ri)
r0 = 0
for leaves in nodes:
#Node branches are longer if there are more nodes.
#This is the inner radius.
#Nodes that have many leaves branches even further.
#This is the outer radius.
inside = size * len(nodes) * 0.1
outside = size * min(4, len(leaves)) * 7
w = inside + outside
_ctx.push()
_ctx.transform(CORNER)
_ctx.translate(x,y)
_ctx.rotate(r0)
_ctx.line(size*1.5,0,w,0)
node(leaves, w, 0, 0, vpad)
_ctx.pop()
r0 += ri
f = _ctx.fill()
_ctx.nofill()
_ctx.oval(x-size*1.5, y-size*1.5, size*3, size*3)
_ctx.fill(f)
_ctx.fontsize(size*2)
_ctx.align(CENTER)
_ctx.text(name, x-size*10, y+size/2, size*20)
_ctx.fontsize(size)
def explode(name, nodes, x, y, max=40, vpad=1.0):
"""Draws a central point named with given name,
and branching nodes from that point.
"""
try:
from wordnet import _ctx
except:
pass
size = _ctx.fontsize()
_ctx.lineheight(1.2)
if _ctx.stroke() == None: _ctx.stroke(_ctx.fill())
_ctx.strokewidth(0.5)
#To avoid a clutter of node leaves,
#limit the number of nodes and shuffle them,
#so there is a random chance of nodes with
#a different amount of leaves appearing next
#to each other.
#This makes for a harmonious tree.
nodes = nodes[:max]
from random import shuffle
shuffle(nodes)
#Define a minimum number of degrees
#to rotate each branching node, based
#on the number of nodes.
ri = 360.0 / len(nodes)
ri = min(60, ri)
r0 = 0
for leaves in nodes:
#Node branches are longer if there are more nodes.
#This is the inner radius.
#Nodes that have many leaves branches even further.
#This is the outer radius.
inside = size * len(nodes) * 0.1
outside = size * min(4, len(leaves)) * 7
w = inside + outside
_ctx.push()
_ctx.transform(CORNER)
_ctx.translate(x, y)
_ctx.rotate(r0)
_ctx.line(size * 1.5, 0, w, 0)
node(leaves, w, 0, 0, vpad)
_ctx.pop()
r0 += ri
f = _ctx.fill()
_ctx.nofill()
_ctx.oval(x - size * 1.5, y - size * 1.5, size * 3, size * 3)
_ctx.fill(f)
_ctx.fontsize(size * 2)
_ctx.align(CENTER)
_ctx.text(name, x - size * 10, y + size / 2, size * 20)
_ctx.fontsize(size)