Andro

I'm using jit.gl.multiple to try and fill a 3d space with the same object in random positions that are an integer eg. x -1 y 2 z 0 and so on, no shapes are allowed to overlap.

Its slow going though because I'm filling in all the possible positions by hand and then feeding it through some zl objects to shuffle and slice the data.

So a space of say 4 x 4 x 4 gives me 64 possible locations to fill out. Obviously a pain to do by hand. And i want to be able to change the size of the space quickly and easily.

Do's anybody have any pointers on objects or techniques that can generate all the co-ordinates of that space as a list ?

-2. 2.-2. (top left co-ordinate) then -1. 2. -2. (next co-ordinate) and so on.

Ideally I'd shuffle that list and use zl.slice to send them to the 1d matrix generating shapes with jit.gl.multiple.

Hope its clear what I'm trying to ask , I'm not even sure how to formulate it myself :P

Its slow going though because I'm filling in all the possible positions by hand and then feeding it through some zl objects to shuffle and slice the data.
So a space of say 4 x 4 x 4 gives me 64 possible locations to fill out. Obviously a pain to do by hand. And i want to be able to change the size of the space quickly and easily.

Do's anybody have any pointers on objects or techniques that  can generate all the co-ordinates of that space as a list ?
eg.
-2. 2.-2. (top left co-ordinate) then -1. 2. -2. (next co-ordinate) and so on.
Ideally I'd shuffle that list and use zl.slice to send them to the 1d matrix generating shapes with jit.gl.multiple.
Hope its clear what I'm trying to ask , I'm not even sure how to formulate it myself :P

filling-a-list-with-3d-co-ordinates

did you had a look at the jit.expr tutorial by andrew benson? it is worth the effort, later you can dive into jit.gen...

Hi Tobias, yup, i checked it and banged my head against the wall for the last two days. Trigo is not one of my strong points (especially in 3 dimensions) and I feel that for a complete equation noob as myself thats theres a lot of "basic" info missing. It go's from basic explanations to BAM oval (and i'm lost)

I understand that hypot(snorm[0]\,snorm[1] gives me the hypotenuse which allows me to keep the center of the matrix at 0.0.0 (works fine with a 1 plane matrix). I just cannot get the syntax correct to apply this to a 3 plane matrix.

When I get a jit.gl.gridshape and set it @shape cube @matrixoutput 1 the matrixes (with jit.cellblock and jit.pwindow) are completely different.

I really miss the jit.expr help file just having a few examples with a 2d and 3d matrix, I'm sure if those examples were there I could (as always) start from scratch and slowly learn how to make it work.

I understand that hypot(snorm[0]\,snorm[1] gives me the hypotenuse which allows me to keep the center of the matrix at 0.0.0 (works fine with a 1 plane matrix).  I just cannot get the syntax correct to apply this to a 3 plane matrix.
When I get a jit.gl.gridshape and set it @shape cube @matrixoutput 1 the matrixes (with jit.cellblock and jit.pwindow) are completely different.
I really miss the jit.expr help file just having a few examples with a 2d and 3d matrix, I'm sure if those examples were there I could (as always) start from scratch and slowly learn how to make it work.


https://cycling74.com/tutorials/demystifying-expressions-in-jitter/

read this and download the examples - it was a godsend to me.

Thanks Daddymax, completely missed the download link (extreme face palm).

Thanks Daddymax, completely missed the download link (extreme face palm).
round 3 !


you might also have a look at this thread and the example patch provided by Andrew:

https://cycling74.com/forums/driving-a-ledcube-with-jitter/

look how it makes use of snorm... (if i understand you right that gives you a similiar result of placing objects in the 3d world than what you aim for). you can add into jit.expr to scale (or use jit.op), also you can jit.op some jit.noise....

soooooo snorm[2] is depth ? (didn't see it in the tutorial file, so this part leaves me a bit clueless)

The only two problems I'm hitting now are these.

I only want each cell to output an integer eg. -4. -3. -2. -1. 0. 1. 2. 3. 4.

How can I use cell with snorm ?? so i get negatove to positive values but only as integers ?

This because the models I'm importing from blender are made to the scale of 1. 1. 1. So they all have to slot together.

Last but not least is there an object I'm missing to shuffle a plane of a matrix ?

The 2d examples are pretty high tech for me :P

Thanks Tobias ! thats a great example :)
the expression in the jit.expr object is
expr snorm[0]*4 snorm[1]*4 snorm[2]*4
snorm[0] is horizontal
snorm[1] is vertical
soooooo snorm[2] is depth ? (didn't see it in the tutorial file, so this part leaves me a bit clueless)
The only two problems I'm hitting now are these.
I only want each cell to output an integer eg. -4. -3. -2. -1. 0. 1. 2. 3. 4.
Cell outputs 0 1 2 3 4
snorm gives me floats like 1.41
How can I use cell with snorm ?? so i get negatove to positive values but only as integers ?
This because the models I'm importing from blender are made to the scale of 1. 1. 1. So they all have to slot together.

Last but not least is there an object I'm missing to shuffle a plane of a matrix ?
The 2d examples are pretty high tech for me :P


Filling a list with 3d co-ordinates ??