I can set translation`value but entity can`t move ?

Unity Engine
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1

4506010--416377--upload_2019-5-6_17-8-30.png
4506010--416377--upload_2019-5-6_17-8-30.png1511×669 278 KB

hello friends, I am doing a project which is called dynamicHairs, now i can get new position and quaternion for one bone ,just like the picture, the bone cant move and the transforms value is not change. anyone have good ideals? thank you!

2

I believe the Translation/Rotation components are only used to set the initial values of the Entity’s transformation; after being converted to ECS components at startup, I don’t think they’re referred to again. This is an older version of the Entities package than I’m used to though. Can you tweak the position/rotation/scale in the Transform component directly & see results in play mode? If anything’s kept in sync with the ECS data, it would be that.

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I made it in imitation of other people’s Demo【version.17】.but now i used version.30, so i have to try used localToWorld compondent,is it right? (i just want to set Rotation and Position,and let the obj moved) ,do you have any good ideal?

4

Also, TranslationProxy is deprecated (because of new workflow). You’ll need to manipulate Translation and Rotation in code (or modify LocalToWorld directly).

namespace Unity.Transforms
{
    [UnityEngine.DisallowMultipleComponent]
    [UnityEngine.AddComponentMenu("DOTS/Deprecated/Translation-Deprecated")]
    public class TranslationProxy : ComponentDataProxy<Translation>
    {
    }
}
5

thank you ,i will have to try by using LocaToWorld ,i want to set Translate/Rotation it means that the entity also need a compondent (CopyTransformToGameobjec) ?

6

Yes for the hybrid workflow you can use CopyTransformToGameObject so that translation, rotation, and scale (held in LocalToWorld matrix) will get automatically copied to the GameObject’s transform.

7

Added to that, when dealing with transformation in code, you can’t directly modify LocalToWorld if there is any other transform component on Entity, such as translation.
https://docs.unity3d.com/Packages/com.unity.entities@0.0/manual/transform_system.html

1 Like
8

Hello, I want ask you a question that how can i get transform.rotation from the component LocalToWorld,i had added the component CopyTransformFromGameobject to the gameobjec; thank you very much.

9

thank you for your help, but I want to ask you another question that how can i get transform.rotation from the component LocalToWorld,i had added the component CopyTransformFromGameobject to the gameobjec;

10

You can do this:

var rotation = new quaternion(localToWorld.Value);
11

I am learning Tranforms ,In the Section 2: Hierarchical Transforms (Basic) ,I find two components LocalToParent and Parent,and i also find Child, so if i want make a chain ,I control the first warp motion, and the later nodes move again according to their parent trajectories:
1: I cant add LocalToParent to the gameObject,so i cant get the translate and rotation(in parent space),Is there any other way to do it?
2: In the ECS, how to get the info of parent transforms and child transform from one entity(gameObject);

12

I have a feeling that you need to look into the conversion workflow. The easiest way to observe how hierarchical transforms work in ECS is to snap a ConvertToEntity script on a GameObject with some children, and then see how everything gets converted in playmode. Ofc, digging into the actual source code also helps.

13

hello! I have a problem that i want to get an entity`s sacle from localToWorld? how can i do?(i had added two component in the entity [LocalToWorld] and [CopyTransformFromGameObject])