| //Moebius transformations in 3d, by reverse stereographic projection to the 3-sphere, | |
| //rotation in 4d space, and projection back. | |
| //by Daniel Piker 09/08/20 | |
| //Feel free to use, adapt and reshare. I'd appreciate a mention if you post something using this. | |
| //You can also now find this transformation as a component in Grasshopper/Rhino | |
| //I first wrote about these transformations here: | |
| //https://spacesymmetrystructure.wordpress.com/2008/12/11/4-dimensional-rotations/ | |
| //If you want to transform about a given circle. Points on the circle and its axis stay on those curves. | |
| //You can skip these 2 lines if you want to always use the origin centred unit circle. |
| using UnityEngine; | |
| using Valve.VR; | |
| public class SteamVR_TrackingWithoutHMD : MonoBehaviour | |
| { | |
| private CVRSystem _vrSystem; | |
| private TrackedDevicePose_t[] _poses = new TrackedDevicePose_t[OpenVR.k_unMaxTrackedDeviceCount]; | |
| // initialize | |
| void Awake() |
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FFmpeg is one of the most powerful tools for video transcoding and manipulation, but it's fairly complex and confusing to use. That's why I decided to create this cheat sheet which shows some of the most often used commands.
Let's start with some basics:
ffmpeg calls the FFmpeg application in the command line window, could also be the full path to the FFmpeg binary or .exe file