How To Test If A Object Is On Camera In Unity

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1. I am trying to discover means to optimize a loftier poly CAD file imported as FBX. For reasons I won't get into I am unable to reduce the poly count (roughly 4 million tris, verts!!).

   As an culling I want to explore ways to dynamically hide parts of the imported mesh NOT currently seen by the Main photographic camera. ie I am NOT talking about frustrum culling, which works by default, rather I want to turn an object 'OFF' ie Setactive(false), if that object is subconscious or occluded past some other object.

   Is this possible? Or would the price of checking visibility to the Main Photographic camera nullify whatsoever operation gains thru a reduced Poly count?

   After some googling I wonder if Raycasting is what I need
   http://answers.unity3d.com/questions/15636/how-can-i-check-the-line-of-sight-to-see-if-the-pl.html

   If the post-obit script was put on the Principal camera and I substitute 'player' with the object I am checking>

   3. var rayDirection = player. position - transform. position ;
   4. if (Physics. Raycast (transform. position, rayDirection, hit) ) {
   5. if (hit. transform == role player) {
   6. // enemy tin can see the histrion!
   8. // there is something obstructing the view

   Last edited: Mar 25, 2017

2. webox

   

   Joined:

   Aug 27, 2015

   Posts:

   72

3. Thanks will check those out. Also figured a more efficient style to find the 'root' fabric object of my FBX mesh is to tag them, and then in my First method populate an Assortment or listing with these objects using FindGameObjectsWithTag

5. Unfortunately my mesh is Dynamic ao AFAIK cannot use Apoplexy culling.
   OnBecameInvisible
   https://docs.unity3d.com/ScriptReference/Renderer.OnBecameInvisible.html
   is interesting only disruptive.
   Subsequently reading this thread https://forum.unity3d.com/threads/are-onbecamevisible-and-onbecameinvisible-named-poorly.34225/
   I assume that OnBecameInvisible Only gets called in the editor if your Scene view tab is airtight AND the gameObject in question is leaving the Chief Camera's frustrum.
   Then just frustrum culling which is enabled past default anyways....

   Only if I understand correctly, it SHOULD piece of work as anticipated if you are deploying to iOS??

6. vElumi

   

   Joined:

   Nov 21, 2016

   Posts:

   ii

   OnBecameVisible and OnBecameInvisible piece of work in editor too, they just check for the scene view camera as well equally your "normal" cameras in bureaucracy.

   Then in editor, for instance, OnBecameInvisible is called when the object is not visible neither in scene view, nor past any of your cameras

Source: https://forum.unity.com/threads/check-if-object-is-visible-to-main-camera.462777/

Posted by: boyerwalach84.blogspot.com

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