Spotlights are like point lights but their area of influence is constrained to a cone that gets projected from the light. The border where the light meets the shadows is called penumbra and its softness can be adjusted on the spotlight. You will also notice that the shadows look a bit broken right now. Shadows in three.js are generated using a technique called shadowmaps, which is a performance-optimized way of calculating shadows but can sometimes yield glitchy results. The problem that we are currently seeing is one of the most common artifacts that occurs when using shadow maps. To fix this we need to adjust the bias value on the light shadow.
- [Instructor] In this video, we will take…a look at SpotLights.…You can create a SpotLight by simply calling…the three SpotLight function.…I will again create a dedicated function…to wrap the three.js SpotLight functionality.…So I will find the PointLight-creating function.…I will copy it and paste it…and change its name to getSpotLight.…And here, instead of calling the PointLight function,…I will call the SpotLight function.…SpotLight works with the same arguments as the PointLight.…
So I will get this function's name.…And inside my main function body,…instead of creating a PointLight here,…I'll be creating a SpotLight, and I will be changing…the references to the PointLight name…with the SpotLight name.…I will be selecting all these references…by pressing the Commands + D button…on the Sublime Text editor.…So, here, instead of calling these variables PointLights,…I will be changing them to SpotLight.…And one more change that I would like to do is…I would like to start my SpotLight from a higher position,…which is 4. Perfect.…
Author
Engin Arslan
Released
6/30/2017- Building a simple scene
- Creating three.js 3D objects
- Adding light and shadows
- Animating with Tween.js
- Working with materials and textures
- Editing and importing geometries
- Creating a particle system
- Post-processing with effects and shaders
Skill Level Intermediate
Duration
Views
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Introduction
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Welcome55s
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1. Building a Simple Scene
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Introduction to three.js2m 12s
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Set up the environment2m 37s
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Scene essentials5m 17s
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Populate the scene7m 42s
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Create a ground plane5m 27s
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2. Three.js Scene Object
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Three.js objects1m 56s
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Other Object3D properties5m 14s
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Adding fog to the scene3m 22s
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3. Lights
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Lighting in three.js2m 23s
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Light types5m 25s
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dat.GUI2m 55s
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Orbit controls2m 31s
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Shadows1m 21s
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SpotLight4m 37s
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DirectionalLight4m 11s
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AmbientLight2m 37s
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RectAreaLight52s
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4. Animation
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Random() function2m 16s
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Math.sin() and Math.cos()4m 56s
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Add noise1m 38s
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Camera2m 14s
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Animation rig6m 19s
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Animation rig, part 210m 35s
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Tween.js8m 13s
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5. Materials and Textures
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MeshBasicMaterial1m 33s
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MeshStandardMaterial2m 27s
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Texture maps6m 27s
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Roughness maps3m 10s
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Environment maps4m 24s
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6. Geometries
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Primitive geometries2m 59s
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Manipulating vertices6m 5s
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External geometries4m 35s
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7. Particles
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Creating a particle system7m 46s
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Stats.js2m 10s
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8. Post-Processing
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Post-processing1m 12s
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EffectComposer7m 48s
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Other shaders1m 25s
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Conclusion
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Next steps1m 53s
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Video: SpotLight