Mesh Simplify - Quickly reduce polygon count on your 3D models

Hello guys!

We are happy to announce a new Unity extension:

Edit:
Good news! We have been greenlighted by the Asset Store.
The extension is now available at https://www.assetstore.unity3d.com/en/#!/content/43658

Mesh Simplify is a powerful Unity extension that allows you to quickly reduce polygon count on your 3D models using just a single click.
Mesh simplification is especially useful when importing high resolution meshes or targeting lower end mobile platforms where low polycount is key.
Our Automatic LOD package includes Mesh Simplify in its full extension, so if LOD management is required please consider getting our Automatic LOD package instead.

Features:

• Simplify / decimate meshes procedurally using just one click
• Finetune mesh simplification using different parameters
• Select mesh areas that should have less priority or more priority during polygoncount reduction.
• Mesh simplifier supports both static and skinned meshes!
• Includes full source code
• Includes high quality 3D models and sample scenes seen on the screenshots
• Clean, easy to use and powerful UI with multiediting support
• Valid for all platforms! Especially useful on mobile
• Supports complex object hierarchies with sub-objects and multiple materials

Demos:

Windows: http://bit.do/baJQL
Mac: http://bit.do/baJQ3

Youtube video:

Screenshots:

 

Good news! We have been greenlighted by the Asset Store.
The extension is now available at https://www.assetstore.unity3d.com/en/#!/content/43658

 

Hi
Does this work on skinned meshes?

 

This tool looks quite powerful...difficult to get any good reviews on all the various mesh reduction tools. Will Mesh Simplify help with my issue?
http://answers.unity3d.com/questions/1037260/moire-issue-caused-by-too-detailed-mesh.html
You can seeI need to reduce the number of vertical lines in my mesh.

 

Yes! you can. Check it out in the video. It works with all kinds of meshes and setups

 

That looks more like an AA issue. You probably have deferred rendering activated and no AA support

 

Is BlendShape data conserved after mesh simplification?

 

Hello Xoduz! Can you send me an example object so I can check it out? my e-mail is info@ultimategametools.com

 

Sure. Sent you an e-mail with a basic human model with a single blendshape on it. After importing to Unity, increase the "Bloat" blendshape value on the character's mesh to make it appear... well... bloated

 

Not at the moment, but I think I will have it working in no time

 

Very happy to find this asset at the store! I though of dropping by just to ask a quick question. Would it be possible to use your asset to erase interior parts of meshes? I have an application where big objects are generated procedurally, by aggregating other small prefab meshes. However, in the end, although I got fairly satisfactory results, I end up with plenty of vertices and faces inside the final object. I wonder if your tool would help me deleting those? Thanks anyway and congrats for the great asset.

 

Sure! If you check the video at 2:40 you can see how to assign priorities to vertices. In your case I would select all interior vertices and assign them -1 priority

 

Wow, that sounds pretty awesome. And yours is a smart idea: I should go for a runtime simplification passed via script after my objects are procedurally generated and then set the priority of inner vertices to -1, right? I guess now the challenge is how to select inner vertices of objects procedurally generated objects, since they have random shapes. Do you think your asset has any tool that might help in that or would you recommend any other asset/script that I could buy together with yours so to achieve that? Many thanks for the quick and warm reply.

 

That's a tricky part. There is a lot of literature about testing whether a 3D point lies inside an arbitrary mesh. A very common algorithm is described here: http://objectmix.com/graphics/13280...ide-mesh-intersectionlocation.html#post460971
If you think about it, that solves your whole problem because you simply need to go through the mesh and eliminate those triangles that have one or more vertices inside the mesh

 

Awesome! Many thanks for taking the time to pass me that link. I will give it a try tomorrow, as well as in the solutions I found (http://answers.unity3d.com/questions/48243/finding-if-point-is-contained-within-irregular-mes.html). As soon as I get the proper code, I will let you know how this ended up working in combination with your asset. Best!

 

Version 1.01 has been submitted. Waiting for approval

 

Just bought it and found that it has issues with optimizing flat models. Try optimizing default unity's Plane mesh.

Also here is my example model. It generates many wrong triangles when mesh is flat.

 

i try it with unity4.3.3
after use "compute mesh" the object come invisibile when run game
any idea why this happen ?

 

Did you activate the "Enable Prefab Usage" checkbox? That will save your meshes to disk and enable instancing/prefabs

 

yes i did
after click save file with name mesh_CarStripe7828 in "Asset folder"

i don't think it work because no file save in dir

look

 

i send to you multiple email even before buy
but no respond

if there no solution
can i have refund ?

 

Hello there!

I have no way to reproduce this on any computer. Could you send me your specs and Unity/Mesh Simplify versions?

 

Hey guys, I written to you directly and on facebook, so this is my last try to get a reply on whether this will work with rigged morphed character meshes from Daz3d, I can supply an FBX if you need to check please let me know. Warmest.

 

Hello there!
Sure, send me an .fbx to info@ultimategametools.com and I will check it out for you

 

Hi!!!

Your asset seems really great!

But i wonder if it has, or if its possible to add something like paint weight, like there is in simplygon (user weights - where areas with one color will be more optimized, other areas painted with other color wont be optimized (keeping all the detail))?

Check this video:

I know from what i saw in your video that theres this sphere you can add that would do similar thing, but using it can be really tricky or impossible with some models!! So painting weights is the way to go...it would be awesome if i could bring some map with that info painted and/or i could paint directly on unity and your asset could support that!

Its something also like instalod for UE4 has, called "Custom Vertex Weighting" i belieave

http://www.instalod.io/#Features

Thanks

 

Did anyone get this to work with Unity 4.X ? I'm currently stuck on 4.6 due to the wide selection of old assets i'm using.

 

Why is all mesh data persisted inside the scene files? This is very annoying when scene file size grows above 100mb! Is there another way to persist this mesh data outside the scene file?

 

I seem to have the same problem as UGTools,: enable for prefab not working

Using MeshSimplify, click enable prefab select folder and file name for .asset, change Vertex % then compute mesh. After 'Apply' on prefab, if I remoce the prefab instance from the scene and reinstantiate it the mesh is missing.

Using Unity 5.4.3 on Windows7 64bit. v1.06 of Advanced Tools Mega Pack. (I did notice that on import UNity asked to update some scripts. Does the package need an update before it will properly support newer versions?)

Any help would be much appreciated.

 

Found the solution!

1) Compute Mesh - first
2) Enable prefab usage - second
3) Save .asset
4) Then you should make your object as prefab (that you compute)
5) Save scene and should work...
====

I dont know but there is no instruction about this im just found this because i make many test. Maybe its bug option?

Want to know if will be in future fix of this and real instruction! Thx for attention!

 

Best future if will be option auto save individual object (all object even children) on disk (no need prefab and etc. just compute new object and then plugin auto save in direction where original object but with add "OriginalName_SimplifyMesh).

 

Hi, does this worked with blendWeight animated characters ?

 

Do you mean skinned characters? If so, yes

 

Thanks yes. I meant characters are normally animated in 2 ways... bones, or MorphTarget animations. Does it work with both types, or only with boned animations ?

 

Not with blendshapes for example. I've tried to implement them but Unity just doesn't expose the necessary data through scripting. My guess is it is the same for your case, but I can try out meshes for you if you want. Just send them to info@ultimategametools.com

 

ok no worries, thanks for your reply

 

I'm looking for an in-editor solution to decimate my meshes for LODs. I'm using Mantis LOD currently, which works fine, except for the fact that it does not retain the mesh's normal directions. Which in my case are trees with modified normals, for shading purposes.

Is Mesh Simplify able to keep, or reproject the normals onto the decimated meshes?

What about uv2 and vertex colors, are those retained as well?

These are some of the things I need, so I would be curious to know if this is the right tool for me

 

Yes, it will preserve all vertex information. You can reach me out at info@ultimategametools.com if you need assistance

 

Thanks! Will give it a try!

Edit: Works perfectly!

 

Hello, please tell me if your plugin works under uwp?

 

@ug:

So this function Vertex MinimumCostEdge() pops the vertex with least cost from the heap created in ComputeAllEdgeCollapseCosts() and in ComputeMeshWithVertexCount() we keep collapsing edges until the remaining vertices have a defined count.

I like MeshSimplify, but I have one issue with it:
I'd like to give it the maximal cost for collapsing an edge instead of a number of remaining vertices.
Basically I need a function similar to ComputeMeshWithVertexCount(int numbOfVert) but called ComputeMeshWithMaximalCollapseCost(float maxCollapseCost)

I though i can just check against the cost of the current vertex to collapse instead of the number of remaining vertices for determining termination. But I seem to miss something, because Debugging your code it doesn't look like MinimumCostEdge() even gets called once... what am i missing? Looking forward to your hint

 

2017.x supported?

 

@UGTools
I get an Error message, any ideas:

Error generating mesh: Object reference not set to an instance of an object Stack: at UltimateGameTools.MeshSimplifier.Simplifier.GetWorldVertices (UnityEngine.GameObject gameObject) [0x00110] in B:\Unity\UEBSimulator\Assets\Ultimate Game Tools\MeshSimplify\Scripts\Simplifier.cs:413
at UltimateGameTools.MeshSimplifier.Simplifier+<ProgressiveMesh>c__Iterator0.MoveNext () [0x0003e] in B:\Unity\UEBSimulator\Assets\Ultimate Game Tools\MeshSimplify\Scripts\Simplifier.cs:132
at MeshSimplify.ComputeDataRecursive (.MeshSimplify root, UnityEngine.GameObject gameObject, Boolean bRecurseIntoChildren, UltimateGameTools.MeshSimplifier.ProgressDelegate progress) [0x00282] in B:\Unity\UEBSimulator\Assets\Ultimate Game Tools\MeshSimplify\Scripts\MeshSimplify.cs:342
at MeshSimplify.ComputeDataRecursive (.MeshSimplify root, UnityEngine.GameObject gameObject, Boolean bRecurseIntoChildren, UltimateGameTools.MeshSimplifier.ProgressDelegate progress) [0x002cd] in B:\Unity\UEBSimulator\Assets\Ultimate Game Tools\MeshSimplify\Scripts\MeshSimplify.cs:366
at MeshSimplify.ComputeDataRecursive (.MeshSimplify root, UnityEngine.GameObject gameObject, Boolean bRecurseIntoChildren, UltimateGameTools.MeshSimplifier.ProgressDelegate progress) [0x002cd] in B:\Unity\UEBSimulator\Assets\Ultimate Game Tools\MeshSimplify\Scripts\MeshSimplify.cs:366
at MeshSimplify.ComputeData (Boolean bRecurseIntoChildren, UltimateGameTools.MeshSimplifier.ProgressDelegate progress) [0x0000a] in B:\Unity\UEBSimulator\Assets\Ultimate Game Tools\MeshSimplify\Scripts\MeshSimplify.cs:241
at MeshSimplifyEditor.OnInspectorGUI () [0x00a79] in B:\Unity\UEBSimulator\Assets\Ultimate Game Tools\MeshSimplify\Editor\MeshSimplifyEditor.cs:482
UnityEngine.Debug:LogError(Object)
MeshSimplifyEditor:OnInspectorGUI() (at Assets/Ultimate Game Tools/MeshSimplify/Editor/MeshSimplifyEditor.cs:507)
UnityEngine.GUIUtilityrocessEvent(Int32, IntPtr)

 

OK, this one is solved, a part of a mesh was missing,

 

I found an issue where others might run into too since Unity 2017.3.
2017.3:

Graphics: Support for 32 bit Mesh index buffers:

• By default, meshes larger than 65k vertices get imported with a 32 bit index buffer. Smaller meshes still use 16 bit indices.
• Added Index Format setting to Mesh Importer to override this behavior.
• Added Mesh.indexFormat to scripting API for Meshes created at run time.

https://unity3d.com/de/unity/whats-new/unity-2017.3.0

If you've got an > 65K 32 bit mesh and reduce it with Mesh Simplify below 65K poly, it seems to stay a 32 bit mesh. If you are using an other tool afterwards, which just can't handle 16 bit meshes, you may run in an issue. At current state this is just an assumption, but I'm working on to verify it.

 

Hi UG Tools,

I've just bought the asset and I'm facing some difficulty to have it run smoothly.

I'm using it on this model

and setting the vertex % to 90% - so only 10% reduction - results in having the model dissappear from the scene view as the newly generated mesh has zero number of vertices!

I've used the script on other models and it works ... I don't know why it does that with this model.

Thanks for your feedback

 

Also I get this error when I use it on some models, although I'm using the script only on the object that has a mesh and I'm not checking the option Recurse Into Children as it's only a single object model.

 

Hi, I just used this asset and it's really cool. However after simplify, I loose all sharp edges. How do I fix this?

 

Hi, I used this asset and it's pretty nice, but I got some black shape. How do I fix this?

 

Did you guys solve it? Why @UGTools is not replying?

 

@ZoiX Nope, no response from dev.