Total number of cap SceneMeshes emitted into the target SceneModel, summed across all source objects and cap planes.
Number of source SceneObjects that produced at least one cap. Equals the number of new objects created in the target SceneModel.
Number of source meshes whose cap segments could not be stitched into a closed loop (typically caused by non-watertight source geometry). Those meshes contributed no cap to the target model. Diagnostic only — callers can ignore unless surface quality matters.
Summary statistics returned by buildSectionCaps on success.