Ray tracing is a rendering technique that simulates the physical behavior of light to create realistic images. It is often used in film and animation to achieve high-quality results.

The primary purpose of a render engine is to convert 3D models into 2D images. This process is known as rendering.

Directional lights are a common type of light used in rendering. They emit light in a specific direction, creating shadows and highlights.

Texturing is the process of adding realistic details to a 3D model by applying textures. Textures are 2D images that are mapped onto the surface of a 3D model.

.OBJ is a common file format used for storing 3D models. It is a simple and widely supported format that can be used by a variety of software applications.

Keyframing is the process of creating a realistic camera movement in a 3D animation. It involves setting keyframes for the camera's position, rotation, and focal length.

Motion capture is a common technique used to create realistic motion in a 3D animation. It involves recording the movements of a live actor and transferring them to a 3D character.

Rigging is the process of creating a realistic skeleton for a 3D character. It involves creating bones and joints that can be animated to control the character's movement.

Skinning is a common technique used to create realistic skin and muscle deformations in a 3D character. It involves assigning weights to vertices on the character's surface, which determines how they are influenced by the underlying bones.

Facial animation is the process of creating a realistic facial expression for a 3D character. It involves creating blendshapes, which are different facial expressions that can be blended together to create a wide range of expressions.

Particle systems are a common technique used to create realistic hair and fur in a 3D animation. They involve creating a large number of particles that are simulated to behave like hair or fur.

Fluid simulation is the process of creating a realistic water surface in a 3D animation. It involves simulating the physical behavior of water, such as its viscosity and surface tension.

Pyro simulations are a common technique used to create realistic smoke and fire in a 3D animation. They involve simulating the physical behavior of fire, such as its heat and turbulence.

Particle systems are a common technique used to create realistic explosions in a 3D animation. They involve creating a large number of particles that are simulated to behave like debris and smoke.

Rigid body dynamics is a common technique used to create realistic destruction in a 3D animation. It involves simulating the physical behavior of rigid bodies, such as their mass, velocity, and acceleration.