Hello everyone,

here are some additional vector functions, that can be used with the native Gamestudio VECTORs.

The code includes:
* distance between lines/line segments
* distance between points and lines/line segments
* intersections of planes and lines/line segments
* intersections of spheres and lines/line segments
* vector projection, scalar projection

There is also a dot product function that returns a float instead of a var, in order to handle vectors with larger magnitudes. (Only drawback is, that int<->float conversion is pretty slow. Maybe somebody has a better idea?)

On a side note: The sphere-line intersection function does NOT compute the intersection points.

You can download the code here: gsvec.zip
All functions and parameters are documented in the header file.
A simple demo script (main.c) is included.
The code was tested with lite-C 1.70.1.

Perhaps somebody can make use of it.

Awesome
Had some of these functions scattered around. Assembled in one package is way handy.
Thanks!

Realy awesome! and usefull!
thanx a lot!

Nice to hear that you find it useful!

Now it is also documented online: gsvec docs

There were a few minor bugs in the code or rather mistakes in the documentation:

* ll_vec_distSegLine(): the line is NOT defined by the first but by the second line segment
* ll_vec_distPointSeg(): does not return only 0 or 1, but also 2 and 3 (depending on the case)
* ll_vec_intersectSegPlane(): same as above

I've uploaded the corrected version of the code (same link as before).

Very good. I like it!

great! any functions to mirror a vector along a line?

Howdy!

@Quadraxas
Do you mean something like this?
There isn't such a function yet. However, if this is what you're asking for, I can implement it of course. : )

Thanks Kombucha,

yes that is what i am looking for actually. to be more preciese i would like to use a non-infinite plane to mirror a vector/position.(if thats possible of course)

Also thanks for all your contributions you ve been making lately. : )

All right, I've added a function that mirrors a position vector across a plane:
ll_vec_mirror(vector, point_on_plane, plane_normal)

This function is also featured in the demo script.
Yes, now it looks even more psychedelic. ; )

Download is up-to-date.

Quadraxas, does this function work as you expected?

I'm glad that you like these contributions!

Thanks : )
yes this is exactly what i needed.

litelib is coming along nicely, eh?