Unity collider bounds wrong. bounds all the time except when you add a mesh for the first time or "manually" invoke Mesh. gray); Debug. Here is the same code running on a box with rotation 0, 0, 0: The reason is that the bounds of the box collider is axis-aligned. May 21, 2025 · When the MainGame scene is played, we can see a couple of `Wreck (Clone)` objects instantiated. bounds; Debug. bounds in global space based on the Mesh. TL;DR: if you need to get the right size of the Collider bounds extents, simply scale them accordingly to transform. The colliders are a lot smaller and do not match the geometry at all. If we check the hierarchy, we can see that the parts with colliders (`Bridge2`, `Bridge3`, etc. bounds but none of them really do what i want them to do. The renderer and collider bounds are the axis aligned bounding boxes so when an object is rotated, the “bounding Apr 11, 2019 · The bounds are very much only "based on" the mesh. Apr 8, 2019 · As you can see from the documentation in Physics. I realise that bounds are an axis aligned box, so they should change size, however they seem to get out of sync and not match the collider, once they’ve been allowed to fall/rotate. But I got a result that I wasn't expecting when I tried moving a cube continuously downwards and drawing the bounds with lines. up, Color. size not changing when object is rotated Unity Engine Scripting , Unity-Documentation , Question 15 2587 February 16, 2024 why the bounds of a sphere renderer changed while the sphere rotate around with its self center Unity Engine Description The world space bounding area of the collider. Go to Edit > Project Settings… > Physics 2D to manage the global settings for Physics 2D. I then print the position and size of the bounds. ) do not have matching geometry and collision. autoSyncTransforms, before 2017. DrawLine(bounds. localScale. Dec 2, 2016 · I have played around with mesh. 2, this wasn’t an issue, but that did cause Unity games to run a lot slower if physics objects were moved a lot. bounds. Apr 24, 2016 · I have some crates in a game. Report a problem on this page Mar 23, 2015 · Unity Collider. Aug 3, 2025 · This guide covers the 5 most common Unity collider mistakes and their solutions. Feb 17, 2013 · Collider bounds wrong after a while Questions & Answers legacy-topics 1 975 April 24, 2016 Collider. No rigidbody, not marked Trigger (but it still trips the OnTriggerEnter function just fine) Apr 5, 2020 · What’s happening ? First of all, you may have noticed that the results are wrong only when the box is rotated or scaled. bounds in order to calculate the translated, scaled and rotated Renderer. bounds, and collider. bounds, renderer. Note that this will be an empty bounding box if the collider is disabled or the game object is inactive. It also has a Kinematic rigidbody, and IsTrigger is checked. A small planet, that is one mesh, with a mesh collider. It then uses this local space Mesh. Mar 18, 2024 · 这次的bug背景代码比较多（超长算法横纵长度。 。。 ），所以在解决过程当中走了很多弯路，始终没有踩到点，也根本没想到原因在于unity本身的一个坑上：利用unity自有打包函数获取模型的modelSize在x,y,z上的大小，网上已有方案：meshR_unity 获取模型bounds local. I was hoping there would be an easy built in way to do this but I haven't been able to find anything so far. It is tall and narrow. Aug 29, 2019 · When I try to get the bounds of my models (created in Blender) and show them in Inspector: As you can see the bounds are correct when the objects are not rotated. Whether you’re building 2D platformers, 3D games, or AR/VR experiences, proper collider setup is crucial for smooth gameplay and optimal performance. Something like: Vector3 extents = _my_collider. From waht I understand, Collider. Indeed, when you dynamically make or modify a mesh in code, you finish with a Unity call "RecalculateBounds" which correctly figures out and sets the bounds; similarly when Unity is setting up a mesh from a file (so, your elephant or whatever from Maya), Unity calls "RecalculateBounds". collider. min + Vector3. the mesh bounds is accurate to the objects bounding box but only at rotation 0, however this is only in local space and not the world space that i want. Description The world space bounding volume of the collider (Read Only). Bounds bounds = Absorbed. DontSaveInEditor - Wrong collider Bounds (center always 0) Unity Engine Bug, Scripting Darkgaze May 16, 2022, 12:52pm Oct 22, 2019 · I agree that the fact the Collider automatically tries to fit a Mesh bounds when you add it to a GameObject the first time can be missleading. Bounds are the sides or bounds of the collider of the GameObject (at least for a cube with a BoxCollider). RecalculateBounds. May 16, 2022 · HideFlags. And I use the bounds. min, absorbedObjectBounds. Contains for 2d Polygon Collider Questions & Answers legacy-topics 1 3799 July 23, 2015 OnMouseDown with Collider2D Unity Engine Scripting 26 56658 September 16, 2022 Bounds has Z value for some reason Questions & Answers legacy-topics 2 445 December 15, 2017 Checking if a point is withing any of the colliders Questions Dec 23, 2020 · I think this is wrong because what I'm doing with the renderer's bounds to compute halfSize and center aren't giving me a bounding rectangle. max Aug 29, 2019 · Unity dos not recalculate the Mesh. I have setup another check for these bounds in the OnDrawGizmo () method. The bounds are drawn with a wire cube in magenta if they aren’t intersecting, and yellow if they are. extents; Feb 3, 2021 · A rocket, with a simple box collider covering its bounds. Oct 23, 2020 · At this point I print the position of the bounds. This means that it can’t be rotated and so it won’t take into account your box rotation. 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