koobas.hobune.stream
Destroying a LineRenderer component and then adding it again at runtime
I have a global var lineRenderer:LineRenderer that is:
- initiated in
Start()vialineRenderer = gameObject.AddComponent(LineRenderer); - has its
setPosition()populated with a bunch of coordinates - so it appears like a "drawn line" on a whiteboard
And then I want to erase the board - presumably, the way to do that is Destroy() ... so I tried Destroy(lineRenderer);
When I attempt to reinitiate it with lineRenderer = gameObject.AddComponent(LineRenderer);, I get errors like: "Can't add component 'Line Renderer' to lRenderer (name of game object) because such a component is already added to the game object!"
Subsequent lineRenderer.property assign's yield errors like: "Object reference not set to an instance of an object"
So, long description short, how do you ERASE the line from a lineRenderer, so that you can repopulate its setPosition? (Not sure if destroy is the right word..)
By reading the documentation, it looks like you want
GetComponent(LineRenderer).SetVertexCount(0)
No. Error still occurs. I had that in there before, referenced as lineRenderer.SetVertexCount(0) -- to be sure, I tried GetComponent(LineRenderer).SetVertexCount(0); - same error still occurs
Although I realize that I am replying to this post a couple of months later than necessary, perhaps I can help somebody anyway. This error exists in ordinary .NET apps. When I see this error, I fix the problem by inserting code similar to:
lineRender = new LineRenderer();
Hope this helps.
public LineRenderer lineRenderer;
Start()
{
lineRenderer = gameObject.GetComponent<LineRenderer>();
}
Update()
{
if (your desired conditions)
{
lineRenderer.SetVertexCount(0);
}
That seems to be working for me, hope this helps.
you can use lineRenderer.positionCount = 0;
lineRenderer.SetVertexCount(0); is outdated.
