entropy/entropy

Astronomy staged as a live immersive performance

This repository contains all the software developed for the Entropy presentation.

Please note that at this point, these applications are unfinished proofs-of-concept, so run at your own risk!

Project files are included for Xcode (OS X) or Visual Studio 2015 (Windows). Most apps should run on both platforms, but note that some may be Windows only because of OpenGL limitations on OS X. The final set of applications will run on Windows, so that's always your best bet. All apps should also theoretically work on Linux, if anyone wants to give that a go.

Setup

1. Clone openFrameworks. Make sure to use the Entropy organisation fork to ensure all apps will run correctly.
2. Clone Entropy (this project) into the openFrameworks/ directory.
3. Download all necessary addons.
   1. Make sure you have Python installed and run the script python _update.py from the command line.
   2. Alternatively, look through the _dependencies.json file and manually clone all addons in that list.
4. Try running some projects!

Update

1. Make sure you have Python installed and run the script python _update.py from the command line.

Collaborate

We'll be using the gitflow model in order to collaborate while keeping things stable. For more info, check out these links:

• http://nvie.com/posts/a-successful-git-branching-model/
• https://www.atlassian.com/git/tutorials/comparing-workflows/gitflow-workflow

Make sure any addons you are using are forked in the Entropy organization, and properly referenced in the _dependencies.json file. This will ensure everyone works off the same codebase.

Contribute

Please submit an issue if you find any bugs or have any problems setting up. PRs are even better!

entropy's Issues

Figure out better interface for timeline pages and mappings gui

Slow down but stay smooth

Maybe we calculate the next frame and lerp between the prev / next frames during the intermediate frames.

Don't apply PostEffects to Overlay content

Particles crashes, num particles decrements past 0

The Particles scene is crashing quite a bit. I had a look and saw that the values for numParticles decrements even if it's at 0. I added traces in ParticleSystem here so you can see where it happens.

Mapping: Use thicker lines in grid

Add photons transparency on a slider

So that we can fade them in and out

Integrate CMB image somehow in the scene

Camera track inertia on a slider

Draw wireframes and fills

Make the box size the same for all Scenes

Right now Inflation has a "world size" of 1.0f, Particles is 1000.0f, CMB is 800.0f. We should make all these the same to keep the parameters similar across scenes. How about 1000.0f?
cc @arturoc

Don't render photons as fireworks

Try to just use them as lights

Fix gui capturing mouse clicks that didn't start on it

Playlist: Live controls

• Auto-play
• Pause markers
• Key binding for playing until next pause marker

Pop-ups: Fix multi-gui

They scroll indefinitely

Animatable Fog

Whenever we change the fog parameters everything chugs, making it impossible to animate. I think you mentioned something about the ofMaterial shader reloading.

Test dual screen from single computer

• Check that GTX 1080 has capability to send to 5 outputs.
• Test that we can render at decent speeds for full resolution of both screens:
  • Front Screen: 1400x1050x3 = 4200x1050
  • Back Screen: 1920x1080x2 = 3840x1080

Transition Box from Particles to Bubbles

Add Camera reset button to Scene gui.

Post Effects: Add transparency to Vignette

Could we make the edges not fully opaque?

Add vignette to post-processing

Parameters:

• Focal point
• Size
• Feather

Resetting scene causes a crash

Load a new preset to reproduce, something is probably missing in ParticleSystem::clearParticles()

Pop-ups: Use a single value for size

Make sure async loading works properly

Add 3D positioning option for Pop-ups

Camera: Add FOV parameter to GUIs

Photon light radius on a slider

Add a Playlist for going through Scenes

Maybe Scene::Manager becomes Playlist

Convert meshes to spheres

Try to speed up CMB

Maybe update every other frame...

Photon lights not working anymore

camera jumping

The problem comes from App modifying the passed mouse arguments on drag:
https://github.com/Entropy/Entropy/blob/master/Projects/EntropyLib/src/entropy/util/App.cpp#L520-L534

The arguments passed from an event should never be modified since it can have effects like this on other parts of the application which are really hard to debug.

We should have made the core events parameters const in OF but since we didn't do it from the beginning it's hard to change it now.

Anyway, not sure if that code is trying to do something else so haven't changed it but just making a copy of the ofMouseEventArgs before modifying them should fix it

Window should be at same ratio as back screen app

Box: Use an alpha value instead of an enabled flag for visibility

Make sure gui windows stay on the first screen

Change photon appearance

They look a little too much like fireworks now, which doesn't fit with the rest of the style.
Yannick suggested something with more of a trail... I have something we could recycle from CLOUDS if we want: https://www.flickr.com/photos/prisonerjohn/10972664994/

Add some type of wireframe rendering to the 3D CMB

Maybe bubbles start as wireframe which explodes as it grows (only draw lines in a certain distance range)

Implement 2D version of CMB for Front Screen

Override mesh and fill alpha in Wireframe Renderer

This could be useful for passing the Box in an already existing renderer.
An alternative option would be to pass in an ofParameterGroup as a parameter with all the settings.

Place the first drop in the 2D CMB

Particles + Fog bug

There's some weird artifacts in the Particles scene with the fog, see screenshots.

Add GL state tracker

To avoid calling glGetIntegerv() all the time for flags like GL_DEPTH_TEST and GL_CULL_FACE, etc.

Look into showing warps on the Control screen

Camera: Fix relationship between Front and Back

Also make sure they stay consistent between save / load.

Select colors and models for each particle type

Pop-ups: Fix crash on preset load

This tends to happen on startup more than when loading a new preset.
Absolute paths in the saved settings might be part of the problem.

Transition parent particles from Inflation to Particles

What's happening: The inflation blobs break down into huge "parent" particles, and these eventually break down into a bunch of the smaller ones (quarks and leptons and whatever).

Quick implementation idea:

• Blobs eventually move to the front screen and fade out of the back screen.
• Grow fat slow moving spheres from those blobs on the front screen. Just pick a point at random on a blob to seed from.
• Front screen blobs fade out.
• Spheres fade out.

Render CMB using GL_TEXTURE_3D

Add stars

Video: Map to timeline track

For both Video scene and Video pop-up.

Add Video option for Pop-ups