def draw(self):
d = self._path()
self.arrow = svg.path(d=d)
self.arrow.bind('click', self.switch)
self.arrow.classList.add('switch')
self.arrow.classList.add('switch-' + dirtext(self))
return self.arrow
def draw(self):
self.path = svg.path(
d=rail_segment_d(self.left_node, self.right_node)
)
self.path.classList.add('rail')
if self.crossings:
self.path.classList.add('crossed')
self.left_node.redraw()
self.right_node.redraw()
return self.path
def drag_started(self, event):
if self.drag_origin:
return
print('drag started')
self.drag_origin = self.grid.closest_node_screen(event.x, event.y)
self.drag_origin.show_build_endpoint()
if self.drag_path:
self.drag_path.remove()
self.drag_path = svg.path()
self.drag_path.classList.add('build-path')
self.layer <= self.drag_path
self.drag_nodes = []
self.drag_current = None
def draw(self, svg_interface):
self.svg_interface = svg_interface
self.builder_layer = self.builder.draw()
self.grid_layer = self.draw_grid()
self.rail_layer = svg.g(id='raillayer')
self.node_layer = self.draw_nodes()
self.exit_layer = svg.g(id='exitlayer')
Exit.highlighter = svg.path(id='routehighlighter')
Exit.highlighter.classList.add('highlighted')
self.exit_layer <= Exit.highlighter
self.aux_pt = self.svg_interface.createSVGPoint()
return [
self.builder_layer,
self.grid_layer,
self.rail_layer,
self.node_layer,
self.exit_layer,
]
class Switch:
MARKER = svg.marker(
id='switcharrow',
markerWidth=3, markerHeight=2,
refX=2, refY=1,
orient='auto',
markerUnits='strokeWidth',
)
MARKER <= svg.path(d='M0,0 L0,2 L3,1 L0,0')
enabled = False
LENGTH_FRACTION = 0.4
def __init__(self, node, left):
self.node = node
self.left = left
self.arrow = None
def draw(self):
d = self._path()
self.arrow = svg.path(d=d)
self.arrow.bind('click', self.switch)
self.arrow.classList.add('switch')
self.arrow.classList.add('switch-' + dirtext(self))
return self.arrow
def _path(self):
target = self.node.get_link(self.left)
part = self.LENGTH_FRACTION / (abs(target.col - self.node.col) ** .75)
return rail_segment_d(self.node, target, part, relative=True)
def redraw(self):
if self.arrow is None:
return self.draw()
def switch(self, event=None):
if self.enabled:
self.node.flip_switch(self.left)
self.arrow.attrs['d'] = self._path()
def __repr__(self):
return '<{}Switch{}({})>'.format(
dirtext(self).capitalize(), self.node, self.position
)
def pathCreation(pos_from, pos_to):
x1, y1 = map(int, pos_from)
x2, y2 = map(int, pos_to)
dx = abs(int((x1 - x2)))
dy = abs(int((y1 - y2)))
if dx > dy:
mx1, my1 = int((x1 + x2) / 2), y1
mx2, my2 = int((x1 + x2) / 2), y2
else:
mx1, my1 = x1, int((y1 + y2) / 2)
mx2, my2 = x2, int((y1 + y2) / 2)
if x1 == x2:
mx1 += 1
mx2 += 1
if y1 == y2:
my1 += 1
my2 += 1
d = f'M {x1} {y1} C {mx1} {my1} {mx2} {my2} {x2} {y2}'
line = svg.path(d=d)
return line