The primary purpose of control points in 3D modeling is to shape and adjust the geometry of surfaces or curves, acting as anchor points that influence their form, curvature, and position for precise detail control.
- **Shape Definition**: They outline and structure core elements like polygons, NURBS surfaces, or splines, forming the model’s basic geometry. - **Curvature Adjustment**: Moving control points modifies curve smoothness or sharpness, ensuring natural or precise bends in the model. - **Detail Refinement**: They enable targeted edits to specific areas, allowing fine-tuning of features without altering the entire model.
Overall, control points balance flexibility and precision, making them essential for creating detailed, customizable 3D models.