def paint_lines(self, surface, parent_offset):
parent_offset = Point(parent_offset)
self.line.update()
self.draw_rect = draw.lines(surface, self.bg_color, False, [tuple(Point(p) + parent_offset) for p in self.line.current], 2, False)
target_widget = self.get_node_widget(self.edge.target)
if (self.line.done and target_widget._pos.done and target_widget._size.done
and self.cached_parent_offset and self.cached_parent_offset == parent_offset):
changed = False
else:
changed = True
self.cached_arrowhead = None
if changed or not self.cached_arrowhead:
# If we didn't cache the found intersection or some stuff changed....
# TODO: make this a binary search
shape = target_widget.shape
i = len(self.line.current)/2
while i + 1 < len(self.line.current):
a, b = map(Point, (self.line.current[i], self.line.current[i+1]))
i += 1
for intersection in shape.intersections(a, b):
break
else:
continue
self.cached_arrowhead = paint_arrowhead_by_direction(surface, (200,60,60),
a + parent_offset,
intersection + parent_offset)
self.cached_parent_offset = parent_offset
return
if self.cached_arrowhead:
repaint_arrowhead(surface, *self.cached_arrowhead)
def paint_shape(self, parent_offset, surface, fore_color, back_color):
change_stopped_now = False
if (self.line.done and self.target_widget.pos.done and self.target_widget.size.done
and self.cached_parent_offset and self.cached_parent_offset == parent_offset):
if not self.cached_arrowhead:
change_stopped_now = True
changed = False
else:
changed = True
self.cached_arrowhead = None
self.line.update()
self.draw_rect = pygame.draw.lines(surface, back_color, False, [tuple(p + parent_offset) for p in self.line.current], 2)
if changed or change_stopped_now or not self.cached_arrowhead:
# If we didn't cache the found intersection or some stuff changed....
# TODO: make this a binary search
shape = self.target_widget.get_shape()
i = len(self.line.current)/2
while i + 1 < len(self.line.current):
a, b = self.line.current[i], self.line.current[i+1]
i += 1
for intersection in shape.intersections(a, b):
break
else:
continue
self.cached_arrowhead = paint_arrowhead_by_direction(surface, (200,60,60),
a + parent_offset,
intersection + parent_offset)
self.cached_parent_offset = parent_offset
return
if self.cached_arrowhead:
repaint_arrowhead(surface, *self.cached_arrowhead)