class PolygonDrawer(EditorActor):
def __init__(self, editor, bundle, polygon_receiver, field = QQ):
EditorActor.__init__(self, editor)
self.polygon_receiver=polygon_receiver
self._pc=PolygonCreator(field)
self._v=[]
self._bundle=bundle
def on_activate(self):
self._editor.set_text("Left click to start drawing a polygon.")
def on_deactivate(self):
self._editor.get_canvas().delete("PolygonDrawer")
def single_left_click(self, event):
x = self._editor.get_canvas().canvasx(event.x)
y = self._editor.get_canvas().canvasy(event.y)
newv=self._bundle.screen_to_math_coordinates(x,y)
if self._pc.add_vertex(newv):
self._v.append(x)
self._v.append(y)
self._editor.get_canvas().delete("PolygonDrawer")
if (len(self._v)==2):
self._editor.get_canvas().create_oval(x-2,y-2,x+2,y+2,outline="",fill="#f70",tags="PolygonDrawer")
else:
self._editor.get_canvas().create_line(self._v,fill="#f70",tags="PolygonDrawer")
if (len(self._v)<=4):
self._editor.set_text("Left click again to choose a new vertex.")
else:
self._editor.set_text("Click again, or press return to stop.")
else:
self._editor.set_text("That point would make the polygon non-convex.")
def key_press(self, event):
if event.keycode==36:
self.polygon_receiver(self._pc.get_polygon(),self._v[0],self._v[1])
self._editor.get_canvas().delete("PolygonDrawer")
self._editor.set_actor(None)
class PolygonDrawer(EditorActor):
def __init__(self, editor, bundle, polygon_receiver, field = QQ):
EditorActor.__init__(self, editor)
self.polygon_receiver=polygon_receiver
self._pc=PolygonCreator(field)
self._v=[]
self._bundle=bundle
def on_activate(self):
self._editor.set_text("Left click to start drawing a polygon.")
def on_deactivate(self):
self._editor.get_canvas().delete("PolygonDrawer")
def single_left_click(self, event):
x = self._editor.get_canvas().canvasx(event.x)
y = self._editor.get_canvas().canvasy(event.y)
newv=self._bundle.screen_to_math_coordinates(x,y)
if self._pc.add_vertex(newv):
self._v.append(x)
self._v.append(y)
self._editor.get_canvas().delete("PolygonDrawer")
if (len(self._v)==2):
self._editor.get_canvas().create_oval(x-2,y-2,x+2,y+2,outline="",fill="#f70",tags="PolygonDrawer")
else:
self._editor.get_canvas().create_line(self._v,fill="#f70",tags="PolygonDrawer")
if (len(self._v)<=4):
self._editor.set_text("Left click again to choose a new vertex.")
else:
self._editor.set_text("Click again, or press return to stop.")
else:
self._editor.set_text("That point would make the polygon non-convex.")
def key_press(self, event):
if event.keycode==36:
self.polygon_receiver(self._pc.get_polygon(),self._v[0],self._v[1])
self._editor.get_canvas().delete("PolygonDrawer")
self._editor.set_actor(None)
def __init__(self, editor, bundle, polygon_receiver, field = QQ):
EditorActor.__init__(self, editor)
self.polygon_receiver=polygon_receiver
self._pc=PolygonCreator(field)
self._v=[]
self._bundle=bundle
def __init__(self, editor, bundle, polygon_receiver, field = QQ):
EditorActor.__init__(self, editor)
self.polygon_receiver=polygon_receiver
self._pc=PolygonCreator(field)
self._v=[]
self._bundle=bundle