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Learning through Art: An Introduction to Virtual Reality
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Billy Roh
May 18, 2018
Technology
1
170
Learning through Art: An Introduction to Virtual Reality
Billy Roh
May 18, 2018
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Transcript
None
Opendoor Work WaffleJS Meetup @billyroh Twitter
Low-end Phone-in-a-box, no dedicated anything High-end Dedicated machines, controllers, sensors
Social Media Games Videos
Not Infinitely Replicable One-Way Street Tight Guardrails Not Infinitely Replicable
One-Way Street Tight Guardrails
Virtual reality is uncharted territory.
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None
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You are the viewer, not the participant.
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Virtual reality, but make it personal.
1. Scene Layout 2. Dynamic Entities 3. Interaction & Physics
Creating a scene and populating it Generating entities in the scene on the fly Having the stickers fly and stick as expected %
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✅ ✅
Asset Management A-Frame’s asset loading and caching system
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.obj Skeleton of the model. The physical shape. .mtl Skin
of the model. The materials and colours.
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Caching is caring. It’s also better for performance. 3D models
Images Audio/Video
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Coffee Table 1 flower 1 <a-cylinder> 4 <a-box>
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Create the surface
Create the legs
Wrap it in <a-entity> for clarity.
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Console 1 TV 1 <a-box> 4 <a-cylinder>
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No Lighting Low Contrast
Lighting the Scene Adding lighting to the scene for better
contrast
Ambient Position-agnostic, affects globally Point Position-dependent, affects locally
Spot Only lights in a specific direction
Directional Like ambient, but lights in a specific direction
Hemisphere Like ambient, but with two separate colours
None
Type Ambient, directional, hemisphere, point, spot Distance How far the
light should reach Intensity How bright the light should be Color What colour the light should emit
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None
12 lighting elements <20 fps 3 lighting elements >30 fps
Default lighting, low contrast. Custom lighting, higher contrast.
Dynamic Generation Appending stickers to the scene on the fly
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None
1. Get Camera Coordinates
2. Generate Cylinder ✨
3. Set Position and Append
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Rotating around the y-axis. Rotating around the x-axis.
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x-axis z-axis -1 -1 +1 +1
Always facing the same way. Facing the direction of the
camera.
Create a mirror image when z < 0.
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None
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A Brief Lesson on Physics Integrating a physics engine to
the scene
aframe-physics-system
Dynamic Body Reactive to collisions and gravity. Static Body Fixed
position, or fixed animation, unreactive.
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Directly set the velocity.
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After a collision, make it a static-body.
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The Two-Body Problem Altering the default physics body
The model is complex. The body is simple.
The engine makes its best guess. Sometimes it’s wrong.
Create a box in its image.
Make it invisible then you’re done.
Closing Remarks A final demo and things to think about
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None
No one knows what they’re doing. Don’t be afraid to
make something strange and beautiful.
Twitter @billyroh billyroh.com/obliteration Demo