Refactor geometry node groups for image depth processing

- Introduced new utility functions in common nodes for evaluating fields and capturing attributes.
- Simplified volume field calculations in image depth cutout and panorama groups by utilizing new utility functions.
- Enhanced readability and maintainability of the image depth cutout and panorama node groups by removing redundant code and improving function usage.
- Adjusted default values for thickness and depth scale in image relief plane group for better user experience.
- Improved handling of geometry attributes and connections in image depth plane group to streamline processing.

tools/nodes/common/nodes.py

@@ -104,3 +104,23 @@ def store_float_attribute(group, geometry, name, value, domain="POINT"):
     else:
         group.links.new(value, node.inputs["Value"])
     return node.outputs["Geometry"]
+
+
+def evaluate_field(group, value, data_type, domain):
+    """Evaluate a field on an explicit domain before downstream adaptation."""
+    node = group.nodes.new("GeometryNodeFieldOnDomain")
+    node.data_type, node.domain = data_type, domain
+    group.links.new(value, node.inputs["Value"])
+    return node.outputs["Value"]
+
+
+def capture_fields(group, geometry, domain, **fields):
+    """Keep source fields attached to geometry through later changes."""
+    node = group.nodes.new("GeometryNodeCaptureAttribute")
+    node.domain = domain
+    node.capture_items.clear()
+    group.links.new(geometry, node.inputs["Geometry"])
+    for name, (data_type, value) in fields.items():
+        node.capture_items.new(data_type, name)
+        group.links.new(value, node.inputs[name])
+    return node.outputs["Geometry"], {name: node.outputs[name] for name in fields}