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# Vector and 3d geometry

Created by
@WondrousChaparral

### What is a 2D texture map?

A texture map with two dimensions, typically indexed by uv coordinates

### What is the purpose of a 3D paint tool in computer graphics?

Digital painting of multiple texture map image channels directly onto a rotated 3D model

### What does a 3D unit vector represent?

A unit vector in 3D space

### What is the purpose of a 2.5D rendering?

<p>Rendering whose result looks 3D while actually not being 3D or having great limitations</p> Signup and view all the answers

### What does a 4D vector commonly hold in graphics code?

<p>Homogeneous coordinates or RGBA data, or simply a 3D vector with unused W to benefit from alignment</p> Signup and view all the answers

## Study Notes

### Texture Maps

• A 2D texture map is a 2D image or pattern that is applied to a 3D object to give it visual detail and texture.

### 3D Paint Tools

• A 3D paint tool in computer graphics is used to add color, texture, and other visual effects to 3D models and objects.

### 3D Unit Vectors

• A 3D unit vector is a vector with a length of 1 that is used to represent direction and orientation in 3D space.

### 2.5D Rendering

• 2.5D rendering is a technique used to create a 3D-like effect by adding depth and visual interest to a 2D image or scene.

### 4D Vectors

• In graphics code, a 4D vector commonly holds homogeneous coordinates (x, y, z, w) that represent a 3D point or vector in a 4D space.

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Maths class 12th

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