private BasicStroke getSelectedAccentStroke(E e, float scale) {
		float width = (SELECTED_STROKE_WIDTH + 2) / (float) Math.pow(scale, .80);
		return new BasicStroke(width);
	}
Returns the edge shape for the given points

@param rc the render context for the graph
@param graph the graph
@param e the edge to shape
@param x1 the start vertex point x; layout space
@param y1 the start vertex point y; layout space
@param x2 the end vertex point x; layout space
@param y2 the end vertex point y; layout space
@param isLoop true if the start == end, which is a self-loop
@param vertexShape the vertex shape (used in the case of a loop to draw a circle from the 
		  shape to itself)
@return the edge shape
Ghidra/Framework/Graph/src/main/java/ghidra/graph/viewer/edge/VisualEdgeRenderer.java