Can't read data from static mesh?

Hello

I'm using static flag now as it seems better since unity 5 than combine them with a script. Problem is i use a couple of functions that need to acces vertices, triangles etc from those meshes (for drawing a mesh for a decal) and Unity tells me I can't..

I can't set them to non static and back to static on the fly since it would need the editor.

I understand that the engine need to protect data from being written but the reading? I don't get why it would be also protected... Maybe i'm doig something wrong. What's are your thoughts on this?

Btw my meshes have the write/read check so it's not that, it works only if i remove the static flag. I can't afford that or i have to return in the old way... Combining myself.

Also posted here: http://answers.unity3d.com/questions/962919/cant-read-data-from-static-mesh.html

 

Bump

 

Bump

 

Sorry about that, i thought it was clear enough but i often forget that my english is pretty bad,.

I need to instantiate a decal on the fly and to doing so i need access to the vertices, triangles etc data of the mesh its colliding with so the mesh could actually have the same shape of the colliding object. I had that working great before but i wasn't using the static flag. instead i was combining myself with CombineChildrenAdvanced. Before UNITY 5 it was better to do so than letting unity doing the job (or at least that's what i thought) because draw calls were very important for a mobile app. Now it seems that draw calls aren't the bottleneck anymore so i tried to set static flag instead and i gained a solid 10 fps. But the function i need to make my decal can't run anymore since the static flag protect the read access (that i can't understand why) and UNITY send me a bug that i can't access to those data, and if I remove the static flag it works again.
I can post you part of the code (which is not mine)but i'm not sure it would be revelant here.

Code (CSharp):

1. public static void BuildDecalForObject(Decal decal, GameObject affectedObject) {
2.         Mesh affectedMesh = affectedObject.GetComponent<MeshFilter>().sharedMesh;
3.         if(affectedMesh == null) return;
4.  
5.         float maxAngle = decal.maxAngle;
6.  
7.         Plane right = new Plane( Vector3.right, Vector3.right/2f );
8.         Plane left = new Plane( -Vector3.right, -Vector3.right/2f );
9.  
10.         Plane top = new Plane( Vector3.up, Vector3.up/2f );
11.         Plane bottom = new Plane( -Vector3.up, -Vector3.up/2f );
12.  
13.         Plane front = new Plane( Vector3.forward, Vector3.forward/2f );
14.         Plane back = new Plane( -Vector3.forward, -Vector3.forward/2f );
15.  
16.         Debug.Log(affectedObject);
17.         Vector3[] vertices = affectedMesh.vertices;
18. /.. the code goes on but the error comes at this line

The exact message error is : Not allowed to access vertices on Mesh 'Combined mesh (root: scene)'
I did some searching around and this was leading me to the static hint, which is indeed the guilty one here.

What i want to know is:
-is there another way to proceed to fit my need? How do you guys do?
-and why is the static flag preventing me to read in the first place?

Oh and for more precision about what i'm trying to do.. I have a turret that shot a rocket, if it hit a walls or something i want to have a decal who fit the collided shape to be instantiated.

Please also tell me if i'm clear enough now or if I have to try harder explaining it.

 

I still need an answer on this. Do you understand my problem now?

 

Hahaha! Yeah maybe. Thanks a lot for your concern and your nice input. It looks like the txt solution would be better for the overall performances but i don't have any clue of how I could manage this with my few knowledge, so I decided to give the dupe walls a try. Again thank you!

 

That's just perfect! This is working again and the profiler don't even show any sign of performances losses. Thanks a ton!