https://github.com/katebea/vector3d

Some three dimensional vector stuff
https://github.com/katebea/vector3d

Last synced: about 5 hours ago
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Some three dimensional vector stuff

• Host: GitHub
• URL: https://github.com/katebea/vector3d
• Owner: kateBea
• Created: 2022-10-29T23:55:07.000Z (about 2 years ago)
• Default Branch: main
• Last Pushed: 2023-03-01T15:41:46.000Z (over 1 year ago)
• Last Synced: 2023-03-26T14:37:15.145Z (over 1 year ago)
• Language: C
• Size: 114 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Vector3D

Some three dimensional vector stuff. Latest addition is rotation in 3D space, requires two elements, **rotation axis** and the **angle**. The later could be in either degree or radians, just need to specify so to any of the functions to rotate a vector. Threre's six functions to rotate vectors in total, three of them assume the unitary vector for the specific axis (``[1, 0, 0]`` for X axis, ``[0, 1, 0]`` for Y axis and ``[0, 0, 1]`` for Z axis), the other three may take an arbitrary vector for the rotation axis (not implemented yet).

# Example execution:

```

******* VECTOR ROTATION *******

vector coordinates [x, y, z]: 1 0 0

[1.000000, 0.000000, 0.000000]

1. Rotate X axis [X]

2. Rotate Y axis [Y]

3. Rotate Z axis [Z]

4. Exit [E]

Axis: Z

Angle: 3.7

Is the angle in degrees? [Y/Yes] : [N/No] -> No

[-0.848100, -0.529836, 0.000000]

vector coordinates [x, y, z]: 1 0 0

[1.000000, 0.000000, 0.000000]

1. Rotate X axis [X]

2. Rotate Y axis [Y]

3. Rotate Z axis [Z]

4. Exit [E]

Axis: Z

Angle: 2.8

Is the angle in degrees? [Y/Yes] : [N/No] -> No

[-0.942222, 0.334988, 0.000000]

```

# Visualization:

Corresponds to the piece of execution above.

![rotate Z axis 3.7 rad](/img/img1.png)

![rotate Z axis 2.8 rad](/img/img2.png)

Images source: 

[GeoGebra](https://www.geogebra.org/m/Fy7UruJa)