Refactor comparison operations in geometry nodes

- Introduced a new `compare_node` function to streamline comparison operations across various geometry nodes.
- Replaced instances of mathematical comparison nodes with the new `compare_node` function in multiple files, enhancing code readability and maintainability.
- Updated related logic in cutout, depth surface, and image processing groups to utilize the new comparison method.
- Ensured consistent handling of boolean logic through the introduction of a `boolean_node` function for combining boolean inputs.

tools/nodes/groups/image_cutout.py

@@ -1,7 +1,10 @@
 """Build O Image Cutout."""
 import bpy
 from anyimage.operators.cutout_tool.shape import NORMAL_REDUCTION_ATTRIBUTE_NAME
-from ..common.nodes import interface_socket, group_input, math_node, float_input, menu_switch, read_float_attribute, store_float_attribute, prepare_node_group
+from ..common.nodes import (
+    interface_socket, group_input, compare_node, math_node, float_input,
+    menu_switch, read_float_attribute, store_float_attribute, prepare_node_group,
+)
 from ..common.cutout import _extrude_layers, _offset_geometry_y, _set_layer_y, _shade_output
 
 
@@ -24,15 +27,12 @@ def _set_segmented_layer_y(
     links.new(edge_vertices.outputs["Position 1"], edge_length.inputs[0])
     links.new(edge_vertices.outputs["Position 2"], edge_length.inputs[1])
     edge_neighbors = nodes.new("GeometryNodeInputMeshEdgeNeighbors")
-    boundary = math_node(nodes, "COMPARE")
-    boundary.inputs[1].default_value = 1.0
-    boundary.inputs[2].default_value = 0.1
-    links.new(edge_neighbors.outputs["Face Count"], boundary.inputs[0])
+    boundary = compare_node(group, "EQUAL", edge_neighbors.outputs["Face Count"], 1, data_type="INT")
     statistics = nodes.new("GeometryNodeAttributeStatistic")
     statistics.data_type = "FLOAT"
     statistics.domain = "EDGE"
     links.new(geometry, statistics.inputs["Geometry"])
-    links.new(boundary.outputs[0], statistics.inputs["Selection"])
+    links.new(boundary, statistics.inputs["Selection"])
     links.new(edge_length.outputs["Value"], statistics.inputs["Attribute"])
     safe_edge = math_node(nodes, "MAXIMUM")
     safe_edge.inputs[1].default_value = 1e-6
@@ -108,12 +108,10 @@ def _set_segmented_layer_y(
 def _build_shell(group, geometry, thickness):
     nodes = group.nodes
     links = group.links
-    zero = math_node(nodes, "LESS_THAN")
-    zero.inputs[1].default_value = 1e-6
-    links.new(thickness, zero.inputs[0])
+    zero = compare_node(group, "LESS_THAN", thickness, 1e-6)
     choose = nodes.new("GeometryNodeSwitch")
     choose.input_type = "GEOMETRY"
-    links.new(zero.outputs[0], choose.inputs["Switch"])
+    links.new(zero, choose.inputs["Switch"])
     links.new(geometry, choose.inputs["True"])
     front = math_node(nodes, "MULTIPLY")
     front.inputs[1].default_value = 0.0
@@ -135,12 +133,10 @@ def _build_shell(group, geometry, thickness):
 def _build_balloon(group, geometry, thickness):
     nodes = group.nodes
     links = group.links
-    zero = math_node(nodes, "LESS_THAN")
-    zero.inputs[1].default_value = 1e-6
-    links.new(thickness, zero.inputs[0])
+    zero = compare_node(group, "LESS_THAN", thickness, 1e-6)
     choose = nodes.new("GeometryNodeSwitch")
     choose.input_type = "GEOMETRY"
-    links.new(zero.outputs[0], choose.inputs["Switch"])
+    links.new(zero, choose.inputs["Switch"])
     links.new(geometry, choose.inputs["True"])
     profile = read_float_attribute(group, 'o_balloon')
     front_scale = math_node(nodes, "MULTIPLY")
@@ -183,13 +179,11 @@ def build_image_cutout_group():
     geometry = choose.outputs[0]
     profile = read_float_attribute(group, 'o_balloon')
     amount = group_input(group.nodes, {'Thickness'})
-    enabled = math_node(group.nodes, 'GREATER_THAN')
-    enabled.inputs[1].default_value = 1e-06
-    group.links.new(amount.outputs['Thickness'], enabled.inputs[0])
+    enabled = compare_node(group, 'GREATER_THAN', amount.outputs['Thickness'], 1e-6)
     inflated = group.nodes.new('GeometryNodeSwitch')
     inflated.input_type = 'FLOAT'
     inflated.inputs['False'].default_value = 1
-    group.links.new(enabled.outputs[0], inflated.inputs['Switch'])
+    group.links.new(enabled, inflated.inputs['Switch'])
     group.links.new(profile, inflated.inputs['True'])
     mode = menu_switch(group, 'Mode', ('Balloon', 'Shell'), 'FLOAT')
     mode.inputs['Shell'].default_value = 1