# Point light not fully shadowing the mesh **URL:** \ **Category:** Questions\ **Tags:** shadows, shadowgenerator, pointlight\ **Created:** [October 31, 2022, 3:06pm UTC](https://forum.babylonjs.com/t/point-light-not-fully-shadowing-the-mesh/35286 "2022-10-31T15:06:46Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Panuchka](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/panuchka/32/12054_2.png) [@Panuchka](https://forum.babylonjs.com/u/Panuchka)\ **Post date:** [October 31, 2022, 3:06pm UTC](https://forum.babylonjs.com/t/point-light-not-fully-shadowing-the-mesh/35286/1 "2022-10-31T15:06:46Z")
Hi everyone! A silly shadowing question that I look some insight into. I have a point light set up to my game main character, so I can get cool looking shadows from the corners and when I peek into rooms that are dark! Spooky… Anyways. Here is a literal “corner case” I have: ![image](https://us1.discourse-cdn.com/flex024/uploads/babylonjs/original/3X/9/5/95fda8f9765d7a535f7c09abffe9f50d32ad8a4c.jpeg) As you can see, I’m missing a part of the shadow! The corner model has a baseboard (dark part) that is pretty much not shadowed at all. I think this is just some configuration issue on my part, but I can’t quite grasp on what is going on. More to that, the inspector doesn’t have all the shadow hinges for me to pull around to see where the problem might be 🤔 I kind of feel like that css debug gif with the shadows right now: ![giphy](https://us1.discourse-cdn.com/flex024/uploads/babylonjs/original/3X/7/2/72968efd61fab2ecb3996d4622c4deff3e4fb072.gif) Here is my point light setup (parented to the character of course): ```auto const frontSpotLight = new SpotLight( 'playerLight', new Vector3(0, 1.1, 0.1), new Vector3(0, 0, 1), 180, 1, scene ) frontSpotLight.radius = 30 frontSpotLight.falloffType = PointLight.FALLOFF_GLTF frontSpotLight.diffuse = new Color3(1, 1, 1) frontSpotLight.intensity = 3 frontSpotLight.range = 10 ``` Shadow generator: ```auto const frontGenerator = new ShadowGenerator(1024, frontSpotLight) frontGenerator.filteringQuality = ShadowGenerator.QUALITY_LOW frontGenerator.darkness = 0 ``` ---
**Author:** ![Evgeni\_Popov](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/evgeni_popov/32/4432_2.png) [@Evgeni\_Popov](https://forum.babylonjs.com/u/Evgeni_Popov)\ **Post date:** [October 31, 2022, 3:22pm UTC](https://forum.babylonjs.com/t/point-light-not-fully-shadowing-the-mesh/35286/2 "2022-10-31T15:22:03Z")
It’s hard to tell without a repro… Anyway, the angle parameter to the **SpotLight** constructor is in radians, not degrees. Also, 180 seems a bit too much, try a lower value. ---
**Author:** ![Panuchka](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/panuchka/32/12054_2.png) [@Panuchka](https://forum.babylonjs.com/u/Panuchka)\ **Post date:** [October 31, 2022, 3:26pm UTC](https://forum.babylonjs.com/t/point-light-not-fully-shadowing-the-mesh/35286/3 "2022-10-31T15:26:21Z")
> [@Evgeni\_Popov](#): > > Anyway, the angle parameter to the **SpotLight** constructor is in radians, not degrees. Also, 180 seems a bit too much, try a lower value. Yeah true, changed it to `Math.PI / 2`, but still same result. Also it seems that the distance from the corner does not change the gap size at all… 🤔 ---
**Author:** ![Evgeni\_Popov](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/evgeni_popov/32/4432_2.png) [@Evgeni\_Popov](https://forum.babylonjs.com/u/Evgeni_Popov)\ **Post date:** [October 31, 2022, 4:02pm UTC](https://forum.babylonjs.com/t/point-light-not-fully-shadowing-the-mesh/35286/4 "2022-10-31T16:02:29Z")
Are you able to provide a live link, even if it’s not in the Playground? ---
**Author:** ![Panuchka](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/panuchka/32/12054_2.png) [@Panuchka](https://forum.babylonjs.com/u/Panuchka)\ **Post date:** [October 31, 2022, 5:06pm UTC](https://forum.babylonjs.com/t/point-light-not-fully-shadowing-the-mesh/35286/5 "2022-10-31T17:06:34Z")
Can’t provide a link yet to the full game, I will probably do a playground later on if someone doesn’t have a clue what could be the issue before that 😃 Could this have something to do with the `Mesh.MergeMeshes`? Since I am using that to combine different cloned meshes, the shadow kind of cuts from the end of the corner piece… ---
**Author:** ![Evgeni\_Popov](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/evgeni_popov/32/4432_2.png) [@Evgeni\_Popov](https://forum.babylonjs.com/u/Evgeni_Popov)\ **Post date:** [October 31, 2022, 6:18pm UTC](https://forum.babylonjs.com/t/point-light-not-fully-shadowing-the-mesh/35286/6 "2022-10-31T18:18:42Z")
No, `Mesh.MergeMeshes` should not do that… In any case, maybe you can test without doing this call to rule out this possibility? ---
**Author:** ![Panuchka](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/panuchka/32/12054_2.png) [@Panuchka](https://forum.babylonjs.com/u/Panuchka)\ **Post date:** [October 31, 2022, 6:41pm UTC](https://forum.babylonjs.com/t/point-light-not-fully-shadowing-the-mesh/35286/7 "2022-10-31T18:41:11Z")
I’ll do that later on… I have a hunch that this is a “peter panning” issue, since the floor and the wall are part of the same mesh ---
**Author:** ![Panuchka](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/panuchka/32/12054_2.png) [@Panuchka](https://forum.babylonjs.com/u/Panuchka)\ **Post date:** [October 31, 2022, 6:57pm UTC](https://forum.babylonjs.com/t/point-light-not-fully-shadowing-the-mesh/35286/8 "2022-10-31T18:57:18Z")
Yeap, fine tuning the bias and normalBias have improved the result: ![image](https://us1.discourse-cdn.com/flex024/uploads/babylonjs/original/3X/9/f/9f7f0a93bcac4f260cf1f1a67cf325d4567e2f37.jpeg) The values right now are: ```auto frontGenerator.bias = 0.000002 frontGenerator.normalBias = 0.00001 ``` Not quite sure how to set the normalBias here in relation to the bias and how it actually affects the whole thing… Aaaaand some other artifacts are popping up 😃 ![image](https://us1.discourse-cdn.com/flex024/uploads/babylonjs/original/3X/6/1/61a770bab8b283302cdab01f8191ec0aef0bc8f0.jpeg) ---
**Author:** ![Panuchka](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/panuchka/32/12054_2.png) [@Panuchka](https://forum.babylonjs.com/u/Panuchka)\ **Post date:** [October 31, 2022, 7:17pm UTC](https://forum.babylonjs.com/t/point-light-not-fully-shadowing-the-mesh/35286/9 "2022-10-31T19:17:13Z")
I think I found the right values now! ```auto frontGenerator.bias = 0.00001 frontGenerator.normalBias = 0.00002 ``` These for now seem to result in the best result in my case. **The problem was peter panning that was countered by tinkering with bias and normalBias values**. Read more here: [Shadows | Babylon.js Documentation](https://doc.babylonjs.com/features/featuresDeepDive/lights/shadows#self-shadow)