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_relief_plane.py

@@ -5,7 +5,7 @@ import bpy
 from anyimage.operators.cutout_tool.shape import NORMAL_REDUCTION_ATTRIBUTE_NAME
 from ..common.nodes import group_input as _group_input, interface_socket as _interface_socket
 from ..common.nodes import store_float_attribute
-from ..common.nodes import prepare_node_group, float_input, vector_input
+from ..common.nodes import compare_node, prepare_node_group, float_input, vector_input
 from ..common.reference_plane import reference_plane_depth
 from ..common.boundary_smoothing import boundary_influence
 
@@ -58,7 +58,7 @@ def build_image_relief_plane_group(image_plane_group):
     validity_threshold = _interface_socket(group, "Mask Threshold", "INPUT", "NodeSocketFloat", options)
     validity_threshold.description = "Set the minimum depth mask value treated as valid."
     validity_threshold.default_value = 0.9
-    validity_threshold.min_value, validity_threshold.max_value = 0.0, 1.0
+    validity_threshold.min_value, validity_threshold.max_value = 0.0, 0.99
     validity_threshold.subtype = "FACTOR"
     base_plane_depth = _interface_socket(
         group,
@@ -136,10 +136,10 @@ def build_image_relief_plane_group(image_plane_group):
     links.new(texture.outputs["Alpha"], invalid.inputs["A"])
     links.new(image_input.outputs["Mask Threshold"], invalid.inputs["B"])
     mask_enabled = image_input.outputs["Depth Mask"]
-    valid_mask = nodes.new("ShaderNodeMath")
-    valid_mask.operation = "SUBTRACT"
-    valid_mask.inputs[0].default_value = 1.0
-    links.new(invalid.outputs["Result"], valid_mask.inputs[1])
+    valid_mask = nodes.new("GeometryNodeSwitch")
+    valid_mask.input_type = "FLOAT"
+    valid_mask.inputs["False"].default_value = 1.0
+    links.new(invalid.outputs["Result"], valid_mask.inputs["Switch"])
     mask_switch = nodes.new("GeometryNodeSwitch")
     mask_switch.input_type = "FLOAT"
     mask_switch.inputs["False"].default_value = 1.0
@@ -165,9 +165,7 @@ def build_image_relief_plane_group(image_plane_group):
     links.new(full_offset.outputs[0], masked_full_offset.inputs[0])
     links.new(mask_switch.outputs[0], masked_full_offset.inputs[1])
 
-    has_thickness = _math(nodes, "GREATER_THAN")
-    has_thickness.inputs[1].default_value = 1e-6
-    links.new(shape_input.outputs["Thickness"], has_thickness.inputs[0])
+    has_thickness = compare_node(group, "GREATER_THAN", shape_input.outputs["Thickness"], 1e-6)
     safe_offset = _math(nodes, "MINIMUM")
     safe_offset.inputs[1].default_value = 0.0
     links.new(masked_full_offset.outputs[0], safe_offset.inputs[0])
@@ -201,7 +199,7 @@ def build_image_relief_plane_group(image_plane_group):
     layer_weight = nodes.new("GeometryNodeSwitch")
     layer_weight.input_type = "FLOAT"
     layer_weight.inputs["False"].default_value = 1.0
-    links.new(has_thickness.outputs[0], layer_weight.inputs["Switch"])
+    links.new(has_thickness, layer_weight.inputs["Switch"])
     links.new(one_minus_ratio.outputs[0], layer_weight.inputs["True"])
 
     weighted_offset = _math(nodes, "MULTIPLY")