219 lines
8.2 KiB
Markdown
219 lines
8.2 KiB
Markdown
LJ v0.7.0
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By Sam Neurohack, Loloster, Cocoa
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LICENCE : CC BY
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A software server with gui for up to 4 lasers live actions. Think creative like Laser "battles", planetarium,...
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This software is in python 2.7 but you run and write your clients separatly in any redis capable programming langage (50+ : https://redis.io/clients).
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Needs at least : an etherdream DAC connected to an ILDA laser, RJ 45 IP network (gigabits only !! no wifi, 100 mpbs doesn't work well with several lasers)
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Nozosc : Semi modular synthetizers from Nozoids can send a lot of their inner sound curves and be displayed in many ways, i.e VCO 1 on X axis and LFO 2 on Y axis.
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The server approach is based on redis. One process per etherdream is spawn : to retrieve the given point list from redis, warp, resample and manage the given etherdream dialog.
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LJ supports Linux and OS X. Windows is unkown but welcome, if someone want to jump in and care about it.
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#
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# Features among many others.
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#
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(Doc in progress)
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- Automatically hook to Midi devices IN & OUT seen by OS. Very cool : LJ can script or be scripted by a midi device : Triggering different musics at given moments,... or in opposite, you can make a midi file with an external midi sequencer to script/trigger laser effects.
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- Interactive (mouse style) warp correction for each laser.
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- Web ui : In your browser open webui/index.html. Javascript is needed.
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- Status every 0.5 seconds : every etherdream DAC state, number of buffer points sent,...
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- "Optimisation" points automatically added, can be changed live for glitch art. Search "resampler" commands.
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#
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# External devices
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#
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(Doc in Progress)
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#
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# Introduction
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#
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LJ is meant for Live, so a lot of parameters can be changed via OSC/midi, webUI,...
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This is *critical and flickering reason #1* if not managed properly, especially you have several lasers.
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Our "always working solution" :
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We use static network configuration, as we regularly move our gear for different venues.
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Our Etherdreams controllers have static IPs defined in their SDcard from 192.168.1.1 to 192.168.1.9. Because wifi will always finally sucks for many reasons, our computers are *gigabits wired connected* with 192.168.1.10 and after. Don't trust end user gear marketing on wifi.
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We have a big *laser dedicated gigabit switch*. We provide Internet through wifi on a different network address like 192.168.2.x
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Even if etherdreams are 100 Mbits, use gigabits gear. Use gigabits gear. USE GIGABITS GEAR :)
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By default LJ uses on 127.0.0.1 (localhost) :
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- A websocket on port 9001 for WebUI interaction.
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- The redis server on port 6379 ('ljayserverip')
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- An OSC server on port 8002. Incoming commands are transfered to webUI.
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- An OSC client on 'bhoroscIP' port 8001.
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- An OSC client for Nozoids support on 'nozoscIP', port 8003.
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You need to update LJ.conf to your network/etherdreams IPs and be sure to check command arguments : python main.py --help
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A dedicated computer to act as "laser server" usually depends on how many lasers you want to control and your main computer load. If you seen flickering with small point lists, try the dedicated computer option.
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Program your own "Client" :
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-------------------------
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- Read the Introduction part in this readme.
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- Carefully read all comments in clients examples.
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- Generate at least one point list array (say a square).
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- Feed your point list string to redis server
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#
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# Install
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#
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With Linux, type in a terminal window :
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./install.sh
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For OS X, you need brew already installed, then :
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brew update
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brew upgrade
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brew install redis
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type all install.sh commands beginning line 4.
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For Linux and OS X :
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Check the bind line in /etc/redis/redis.conf :
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- If client and laser servers computers are the same, use 127.0.0.1
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- Client and laser server are different, use the laser server computer IP.
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In webui/index.html change the ws ip adress to the server IP or 127.0.0.1 if client computer = laser server computer.
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Using the same idea check all ip address in LJ.conf.
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For network Gurus : bind to all network interface scheme is not working yet.
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#
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# To run
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#
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Always start the laser server first.
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Case 1 : the laser server computer is the same that the computer running a client :
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python main.py
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Open/reload in browser webui/index.html. (javascript must be enabled)
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Check in your client if the server IP is the good one
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Run your client
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to monitor redis server :
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redis-cli monitor
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Case 2 : Server and Client computers are different :
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Say the laser server computer (running LJ) IP is 192.138.1.13, the client computer is 192.168.1.52
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On the server computer :
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edit /etc/redis/redis.conf
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python main.py -r 192.168.1.13
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on the client computer for all features :
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to just generate and send list points
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node testredis.js
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to monitor redis server :
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redis-cli -h monitor
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#
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# Todo
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#
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(Doc in Progress)
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- kpps live modification for glitch art.
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- Improve Bhoreal & LaunchPad inputs
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- Improve WebUI with simulator.
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- Warp corrections should not used warpdestinations default values in conf file.
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#
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# Ether dream configuration
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#
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This program suppose that the ether dream is configured in a certain way especially for its IP address. For ether dream 1 : write an autoplay.txt file inside an SD Card within the ether dream DAC, with the following lines you can adjust i.e for pps or fps. Yes, there is a builtin DHCP client in the ether dream DAC but if you run multiple lasers, having a fixed dedicated network makes you focus on laser stuff.
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/net/ipaddr 192.168.1.3
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/net/netmask 255.255.255.0
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/net/gateway 192.168.1.1
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/ilda/pps 25000
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/ilda/fps 25
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About hardware setup, especially if you have several lasers : ILDA cables are insanely expensive. You may consider the Power Over Ethernet 'POE' option. Buy a very small ILDA cable, a POE splitter and connect everything to the ether dream fixed near your laser. You can have then a simple and very long network cable and use a Power Over Ethernet injector or switch closed to the driving computer. Beware some vendors use 24V POE Injector : POE injectors and splitters must match.
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#
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# Coordinates if you use the proj() function
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#
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3D points (x,y,z) has *0,0,0 in the middle*
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A square centered around origin and size 200 (z =0 is added automatically) :
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([-200, -200, 0], [200, -200, 0], [200, 200, 0], [-200, 200, 0], [-200, -200, 0])
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Pygame screen points are 2D. *0,0 is top left*
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with no 3D rotations + 3D -> 2D Projection + translation to top left:
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[(300.0, 400.0), (500.0, 400.0), (500.0, 200.0), (300.0, 200.0), (300.0, 400.0)]
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Pygame points with color is fed to laser renderer
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[(300.0, 400.0, 0), (500.0, 400.0, 16776960), (500.0, 200.0, 16776960), (300.0, 200.0, 16776960), (300.0, 400.0, 16776960)]
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Laser points traced
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Because of blanking many points are automatically added and converted in etherdream coordinates system -32765 to +32765 in x and y axis.
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16 (-1500.0, 1500.0, 65280, 65280, 0), (-1500.0, 1500.0, 65280, 65280, 0), (-1500.0, 1500.0, 65280, 65280, 0), (-1500.0, 1500.0, 65280, 65280, 0), (-1500.0, 1500.0, 65280, 65280, 0), (-1500.0, 1500.0, 65280, 65280, 0), (-1500.0, 1500.0, 65280, 65280, 0), (-1500.0, 1500.0, 65280, 65280, 0), (-1500.0, 1500.0, 0, 0, 0), (-1500.0, 1500.0, 0, 0, 0), (-1500.0, 1500.0, 0, 0, 0), (-1500.0, 1500.0, 0, 0, 0), (-1500.0, 1500.0, 0, 0, 0), (-1500.0, 1500.0, 0, 0, 0), (-1500.0, 1500.0, 0, 0, 0), (-1500.0, 1500.0, 0, 0, 0)
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8 (1500.0, 1500.0, 65280, 65280, 0), (1500.0, 1500.0, 65280, 65280, 0), (1500.0, 1500.0, 65280, 65280, 0), (1500.0, 1500.0, 65280, 65280, 0), (1500.0, 1500.0, 65280, 65280, 0), (1500.0, 1500.0, 65280, 65280, 0), (1500.0, 1500.0, 65280, 65280, 0), (1500.0, 1500.0, 65280, 65280, 0)
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8 (1500.0, -1500.0, 65280, 65280, 0), (1500.0, -1500.0, 65280, 65280, 0), (1500.0, -1500.0, 65280, 65280, 0), (1500.0, -1500.0, 65280, 65280, 0), (1500.0, -1500.0, 65280, 65280, 0), (1500.0, -1500.0, 65280, 65280, 0), (1500.0, -1500.0, 65280, 65280, 0), (1500.0, -1500.0, 65280, 65280, 0)
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8 (-1500.0, -1500.0, 65280, 65280, 0), (-1500.0, -1500.0, 65280, 65280, 0), (-1500.0, -1500.0, 65280, 65280, 0), (-1500.0, -1500.0, 65280, 65280, 0), (-1500.0, -1500.0, 65280, 65280, 0), (-1500.0, -1500.0, 65280, 65280, 0), (-1500.0, -1500.0, 65280, 65280, 0), (-1500.0, -1500.0, 65280, 65280, 0)
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