fraction

let say you create a simple gridshape. You tell this gridshape to draw to a jit.gl.node. Now you change position of this node in the 3d space. 

Is there a way to retrieve easaly the new relative position of that gridshape, therefore without to make a calculation of the new coordinates

(i mean is there an argument or an already packaged feature that does it ?)

In short this is what i want to achieve :

- At first they draw to jit.world. I can retrieve coordinates in the world context.

- Now i d like to group these spheres so i can apply transformation to a groupe of objects, and i believe the best way is to create a gl.node (call "group1), and tell these spheres to draw to this node.

- Now i change position, or rotate "group1" - i would like to be able to retrieve the new position of each of these spheres in the world context. 

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hi,
let say you create a simple gridshape. You tell this gridshape to draw to a jit.gl.node. Now you change position of this node in the 3d space. 

Is there a way to retrieve easaly the new relative position of that gridshape, therefore without to make a calculation of the new coordinates 

 (i mean is there an argument or an already  packaged  feature that does it ?)

let say i have 3 gridshape spheres.
- At first they draw to jit.world. I can retrieve coordinates in the world context.
- Now i d like to group these spheres so i can apply transformation to a groupe of objects, and i believe the best way is to create a gl.node (call "group1), and tell these spheres to draw to this node.

- Now i change position, or rotate  "group1" - i would like to be able to retrieve the new position of each of these spheres in the world context. 

Any idea of the best way to do this?

example patch :


hi,
let say you create a simple gridshape. You tell this gridshape to draw to a jit.gl.node. Now you change position of this node in the 3d 

get-the-new-relative-position-of-an-object-that-draws-to-a-to-jit-gl-node

I don't remember all details but there are messages "getworldpos" and " getworldquat" with jit.anim.node.

https://cycling74.com/forums/coordinate-systems-of-jit-gl-handle-jit-world-and-jit-gl-camera

https://cycling74.com/forums/jit-anim-node-hierarchy

https://cycling74.com/forums/allocentric-viewer-to-position-an-egocentric-camera

I don't remember all details but there are messages  "getworldpos" and " getworldquat" with jit.anim.node.
https://cycling74.com/forums/coordinate-systems-of-jit-gl-handle-jit-world-and-jit-gl-camera 
https://cycling74.com/forums/jit-anim-node-hierarchy 
https://cycling74.com/forums/allocentric-viewer-to-position-an-egocentric-camera 

yep you need to use jit.anim.node. simply "bind" a jit.anim.node to the jit.gl object you'd like to query (either via patchcord from anim.node to jit.gl object, or via jit.gl @anim attribute set to the name of the anim.node object)

i was confusing again between gl.node and anim.node ;)

it is tricky a bit :) so it's better not bind to any jit.gl.node and start to move this node (as a group) if you want to be able to retrieve the position of initial gl object. good to know definitely 

excellent both! thx!
i was confusing again between gl.node and anim.node ;)

it is tricky a bit :) so it's better not bind to any jit.gl.node and start to move this node (as a group)  if you want to be able to retrieve the position of initial gl object. good to know definitely 


ok just tested it. its not exactly what i want to do.

I d like to gather object in a group (like a gl.node) and be able to retrieve position of each the initial objects if you move the node itself (as a group).

ok just tested it. its not exactly what i want to do.
I d like to gather object in a group (like a gl.node) and be able to retrieve position of each the initial objects if you move the node itself (as a group).



ok thx! It was really not obvious for me because you have to think an whole hierarchy based on anim.node and use that getworldpos on a lower anim.node that represents the intial position of the mesh or gridshape.

got it now :) - i thought that jit.gl.node would have been the straight forward and ideal object to manage this.

ok thx! It was really not obvious for me because you have to think an whole hierarchy based on anim.node and use that getworldpos on a lower anim.node that represents the intial position of the mesh or gridshape.
got it now :) -  i thought that jit.gl.node would have been the straight forward and ideal object to manage this. 

if you prefer to use jit.gl.node then go for it. the behavior in this case is identical:

Get the new relative position of an object that draws to a to jit.gl.node