5.1. Connection Pattern Generation

This example demonstrate how to genrate different connection pattern for routing global signals. By default this library support basic fishbone and HTree patterns, which can be extended to create desired connectivity usng transformations like rotate, transalate, margin, merge, scale and sample

Output

from spydrnet_physical.util import ConnectionPattern

p_manager = ConnectionPattern(5, 5)
fishbone_pattern = p_manager.get_fishbone().set_color("green")
svg = p_manager.render_pattern(title="Fishbone Pattern")
svg.saveas("_fishbone_pattern.svg", pretty=True, indent=4)

# ===============================
#        Rotate Example
# ===============================
fishbone_pattern.rotate(90)
svg = p_manager.render_pattern(title="Rotation")
svg.saveas("_fishbone_pattern_90.svg", pretty=True, indent=4)

# ===============================
#        Margin Example
# ===============================
p_manager.reset()
fishbone_pattern = p_manager.get_fishbone(x_margin=(1, 1))
svg = p_manager.render_pattern(title="Margin option")
svg.saveas("_fishbone_pattern_margin.svg", pretty=True, indent=4)

# ===============================
#  Transalate and Merge Example
# ===============================
p_manager = ConnectionPattern(5, 5)
left_tree = p_manager.connections
left_tree = p_manager.get_fishbone(x_margin=(1, 1))
left_tree.translate(-1, 0)

p_manager = ConnectionPattern(5, 5)
right_tree = p_manager.connections
right_tree = p_manager.get_fishbone(x_margin=(1, 2))
right_tree.translate(2, 0)
right_tree.merge(left_tree)
svg = p_manager.render_pattern(title="Merging option")
svg.saveas("_fishbone_pattern_merging.svg", pretty=True, indent=4)

# ===============================
#        Scaling Example
# ===============================
p_manager = ConnectionPattern(3, 3)
left_tree = p_manager.connections
left_tree = p_manager.get_fishbone()
svg = p_manager.render_pattern(title="Original")
svg.saveas("_fishbone_pattern_scaling1.svg", pretty=True, indent=4)
left_tree.scale(2, anchor=(1, 1))

p_manager = ConnectionPattern(5, 5)
right_tree = p_manager.connections
right_tree.merge(left_tree)
right_tree.crop_edges()
svg = p_manager.render_pattern(title="Scale")
svg.saveas("_fishbone_pattern_scaling2.svg", pretty=True, indent=4)

# ===============================
#        Sampling Example
# ===============================
right_tree.sample_connections()
svg = p_manager.render_pattern(title="Sampling after scaling")
svg.saveas("_fishbone_pattern_sampling.svg", pretty=True, indent=4)


# =========================================
#        Up down connection with buffer
# =========================================
p_manager.reset()
fishbone_pattern = p_manager.get_fishbone(x_margin=(1, 1), steps=2)
fishbone_pattern.add_connection(2, 2, 3, 2)
fishbone_pattern.make_top_connection(fishbone_pattern.points[0])
fishbone_pattern.push_connection_down(fishbone_pattern.points[-1])
fishbone_pattern.pull_connection_up(fishbone_pattern.points[-2])
fishbone_pattern.points[-3].buffer = True

svg = p_manager.render_pattern(title="Top and bottom connectivity")
svg.saveas("_layer_connections.svg", pretty=True, indent=4)