Performance : UI Image versus Sprite ?

[ababab5]

Hi,

What is the difference between them ?

Thanks a lot.

Best regards,

AB

[SimonDarksideJ]

The main difference is the renderer, Sprites use a SpriteRenderer and UI uses a CanvasRenderer.

Other than that, not much.

UI is effectively the 2D sprite system bounded by a heap load of additional functionality to layout your UI for rendering.

[ababab5]

@SimonDarksideJ

The main difference is the renderer, Sprites use a SpriteRenderer and UI uses a CanvasRenderer.

Other than that, not much.

UI is effectively the 2D sprite system bounded by a heap load of additional functionality to layout your UI for rendering.

Hi,

Thanks for your reply.

So it cost much to use an UI Image than a Sprite…

Thanks a lot !

[SimonDarksideJ]

It depends on what you want to use it for.
I find if you have fixed UI or static UI, then the new system is brilliant.

If you just want to draw 2D objects in a scene or use world coordinates for everything, or need physics applied to 2D object, then the 2D system is better.

As with everything, use that which makes sense.

[ababab5]

Perfect thanks.

Is it possible to add a rigid body to an ui element ? Like a chart pie with a rigidbody who is updated with the chart pie update?

Thanks again !

[louisgv]

@ababab5

Perfect thanks.

Is it possible to add a rigid body to an ui element ? Like a chart pie with a rigidbody who is updated with the chart pie update?

Thanks again !

You can attach a rigidbody to any game object in the hierarchy. However, for UI element, unless you use the whole canvas as a the game view, it might be pointless to attach one. What might you be using the rigidbody for though?

For a pie chart, you need an angle, a center point, a split point, and a radius. What might rigidbody contribute :-?..

[ababab5]

@louisgv

You can attach a rigidbody to any game object in the hierarchy. However, for UI element, unless you use the whole canvas as a the game view, it might be pointless to attach one. One might you be using the rigidbody for though?

For a pie chart, you need an angle, a center point, a split point, and a radius. What might rigidbody contribute :-?..

Hi,

tahnks for your answer.

To do something like that :

https://www.youtube.com/watch?v=2xc877bWefk

[SimonDarksideJ]

I would be wary about adding physics elements to UI components. They are rendered in a different way to normal GO’s

In all my tests previously, you get a significant about of lag because UI is only processed in the main Update/LateUpdate loop. Changes in FixedUpdate do not apply until the next frame.

You can add RigidBody and Collision components to UI, it just doesn’t update frequently.

[ababab5]

@SimonDarksideJ

I would be wary about adding physics elements to UI components. They are rendered in a different way to normal GO’s

In all my tests previously, you get a significant about of lag because UI is only processed in the main Update/LateUpdate loop. Changes in FixedUpdate do not apply until the next frame.

You can add RigidBody and Collision components to UI, it just doesn’t update frequently.

Hi,

Thanks !

Do you see another solution to do something like the youtube video I sent ?

Thanks again !

Best regards,

AB

[SimonDarksideJ]

If it’s the gameplay you are referring to, then I would just use the 2D sprite system, not the UI system.

UI is for UI/UX, the 2D system is for your game/gameplay.

Looks like a outer circle mesh with a mesh collier and a 2D sprite with a simple box collider. Obviously you could go more complicated that that if you wished.