Python Colour.mix Examples

Example #1

def get_style(node, pale_ratio, divergence_ratio, main_style):
	"""
	:type node: Node
	:rtype: NodeStyle
	"""
	if is_root_or_parents_are_in_loop(node):
		if main_style is None:
			return node.style.copy()
		else:
			return main_style.copy()
	else:
		if len(node.parents) == 1:
			parent = node.parents[0]
			num_siblings = len(parent.children)
			rank = node.get_child_rank(parent=parent)
			if main_style is None:
				style = get_style(
					node=parent, pale_ratio=pale_ratio, divergence_ratio=divergence_ratio, main_style=main_style
				)
			else:
				style = main_style
			if num_siblings == 0:
				colour = style.colour.copy(keep_id=True)
			else:
				colour = style.colour.increase_hue(
					amount=divergence_ratio * get_diverging_number(i=rank, n=num_siblings, reverse=False)
				)
			#colour = colour.pale(ratio=pale_ratio)
			colour.saturation = colour.saturation * 3 / 4
			new_style = style.copy()
			new_style.reset_colours()
			new_style.colour = colour
			return new_style
		else:
			styles = [
				get_style(node=parent, pale_ratio=pale_ratio, divergence_ratio=0, main_style=main_style)
				for parent in node.parents
				if not node.is_in_loop_with(parent)
			]
			colours = [style.colour for style in styles]
			if main_style is None:
				style = styles[0]
			else:
				style = main_style
			colour = Colour.mix(colours=colours).pale(ratio=pale_ratio)
			new_style = style.copy()
			new_style.reset_colours()
			new_style.colour = colour
			return new_style

Example #2

def mix_node_style_of_parents(node,
                              font=DEFAULT_FONT,
                              shape=DEFAULT_SHAPE,
                              shape_style=DEFAULT_SHAPE_STYLE):
    """
	:type node: abstract.Node.Node
	:rtype: NodeStyle
	"""
    scheme = node.graph.colour_scheme
    style = None
    colour = None
    if node.has_parents():
        candidates = []
        for parent in node.parents:
            if not parent.is_in_loop() or not parent.is_style_callable():
                style = parent.compiled_style.copy()
                candidates.append((style, node.get_child_rank(parent=parent),
                                   len(parent.children)))

        if len(candidates) > 0:
            colour = Colour.mix(colours=[
                style.colour.increase_hue(
                    amount=0.1 *
                    get_diverging_number(i=rank, n=num_siblings, reverse=False)
                ) for style, rank, num_siblings in candidates
            ])
            colour = colour.pale(ratio=0.2)
            colour.weight = colour.weight**(0.5)
            #colour = colour.mix_with_gray(gray_weight=2)
            style = NodeStyle(colour=colour,
                              font=font,
                              shape=shape,
                              shape_style=shape_style)

    if style is None or colour is None:
        colour = scheme.least_used_colour
        style = NodeStyle(colour=colour,
                          font=font,
                          shape=shape,
                          shape_style=shape_style)

    return style