Transforms as Start and End for line

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Greg Madison
  • updated
  • Declined

As an UX designer, I mainly use Shapes to draw lines between moving Objects/Prefabs/Transforms.

It would be a huge gain in productivity to just drag Prefabs to set the Start and End of the line, as an option.

Image 691

Reporting a bug? please specify Unity version:
Reporting a bug? please specify Shapes version:
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Built-in render pipeline
Replies 2
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1
Freya Holmér creator
  • Declined

detecting transform changes in a safe way from an API standpoint is nontrivial, so unfortunately I won't be adding support for this. you can, however, make a script that effectively does this for you! This might be useful in your use case:

using Shapes;
using UnityEngine;

[RequireComponent( typeof(Line) )] [ExecuteAlways]
public class LineBetween : MonoBehaviour {

   public Transform start;
   public Transform end;

   Line line;
   Line LineComp => line != null ? line : line = GetComponent<Line>();
   void OnValidate() => UpdateLine(); // update when changing something in the inspector
   void Update() => UpdateLine(); // update every rendered frame

   // call this to make the line match the transforms:
   public void UpdateLine() {
      if( start != null && start.transform.hasChanged ) {
         LineComp.Start = LineComp.transform.InverseTransformPoint( start.position );
         start.transform.hasChanged = false; // note: this may interact badly with multiple scripts
      }
      if( end != null && start.transform.hasChanged ) {
         LineComp.End = LineComp.transform.InverseTransformPoint( end.position );
         end.transform.hasChanged = false; // note: this may interact badly with multiple scripts
      }
   }

}
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0
Greg Madison

Thank you Freya :) 


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