What are control loops, and how are they used in 3D modeling?

Control loops in 3D modeling are iterative feedback systems that adjust parameters to refine details or maintain consistency, acting as a core tool for precision and automation. They function by comparing the current model state (e.g., geometry, texture alignment, animation motion) with target values, then making incremental tweaks until the desired outcome is achieved. Common applications include: mesh smoothing (adjusting vertices to reduce roughness), texture alignment (looping to match texture edges), and animation rigging (refining joint movements for natural motion). By automating repetitive adjustments, control loops streamline 3D modeling, making the process more efficient than manual edits.