How does rigging and weight painting influence 3D character composition?

Rigging and weight painting are core to 3D character composition, directly shaping movement precision and structural coherence in animations. Rigging builds a digital skeleton (bones/joints) to define motion ranges—like arm rotation or spine flexibility—acting as the "motion framework" for the character. Weight painting assigns influence weights to mesh vertices per bone, ensuring body parts (limbs, face) move proportionally and avoiding distortions (e.g., stretched elbows) during animation. Together, they enable lifelike, controlled movements, critical for cohesive 3D character composition in games, films, or animations, balancing technical accuracy with visual realism.