igraph.drawing.cairo.edge.TaperedEdgeDrawer

class documentation

class TaperedEdgeDrawer(AbstractCairoEdgeDrawer): (source)

Constructor: TaperedEdgeDrawer(context, palette)

Edge drawer implementation that draws undirected edges as straight lines and directed edges as tapered lines that are wider at the source and narrow at the destination.

Method draw_directed_edge Draws a directed edge.

Inherited from AbstractCairoEdgeDrawer:

Method	`__init__`	Constructs the edge drawer.
Method	`draw_loop_edge`	Draws a loop edge.
Method	`draw_undirected_edge`	Draws an undirected edge.
Instance Variable	`context`	Undocumented
Instance Variable	`palette`	Undocumented
Instance Variable	`VisualEdgeBuilder`	Undocumented
Method	`_construct_visual_edge_builder`	Construct the visual edge builder that will collect the visual attributes of an edge when it is being drawn.

Inherited from AbstractEdgeDrawer (via AbstractCairoEdgeDrawer):

Method	`get_label_position`	Returns the position where the label of an edge should be drawn. the default implementation returns the midpoint of the edge and an alignment that tries to avoid overlapping the label with the edge.
Method	`get_label_rotation`	Get the rotation angle of the label to align with the edge.
Static Method	`_curvature_to_float`	Converts values given to the 'curved' edge style argument in plotting calls to floating point values.

def draw_directed_edge(self, edge, src_vertex, dest_vertex): (source) ¶

overrides igraph.drawing.baseclasses.AbstractEdgeDrawer.draw_directed_edge

Draws a directed edge.

Parameters
edge	the edge to be drawn. Visual properties of the edge are defined by the attributes of this object.
src_vertex	the source vertex. Visual properties are defined by the attributes of this object.
dest_vertex	the source vertex. Visual properties are defined by the attributes of this object.