LJ/plugins/aurora/live.py

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2020-09-21 09:06:30 +00:00
#!/usr/bin/python3
# -*- coding: utf-8 -*-
# -*- mode: Python -*-
'''
livecode
v0.1.0
Anaglyphed rotating livecode (for red and green glasses)
This scene uses the drawing functions provided by LJ in lj23.py
LICENCE : CC
by Sam Neurohack
'''
#import sys
#import os
#from OSC3 import OSCServer, OSCClient, OSCMessage
#import redis
import math
import time
import numpy as np
from scipy import signal
from datetime import datetime, timedelta
#
# Math functions
#
def ssawtooth(samples,freq,phase):
samparray = [0] * samples
t = np.linspace(0+phase, 1+phase, samples)
for ww in range(samples):
samparray[ww] = signal.sawtooth(2 * np.pi * freq * t[ww])
return samparray
def slivecode(samples,freq,phase):
samparray = [0] * samples
t = np.linspace(0+phase, 1+phase, samples)
for ww in range(samples):
samparray[ww] = signal.livecode(2 * np.pi * freq * t[ww])
return samparray
def ssine(samples,freq,phase):
t = np.linspace(0+phase, 1+phase, samples)
for ww in range(samples):
samparray[ww] = np.sin(2 * np.pi * freq * t[ww])
return samparray
def slinear(samples, min, max):
samparray = [0] * samples
linearinc = (max-min)/samples
for ww in range(samples):
if ww == 0:
samparray[ww] = min
else:
samparray[ww] = samparray[ww-1] + linearinc
#print('linear min max', min, max)
#print ('linear',samparray)
return samparray
def slinearound(samples, min, max):
samparray = [0] * samples
linearinc = (max-min)/samples
for ww in range(samples):
if ww == 0:
samparray[ww] = round(min)
else:
samparray[ww] = round(samparray[ww-1] + linearinc)
#print('linear min max', min, max)
#print ('linear',samparray)
return samparray
# * 11.27 : to get value from 0 to 127
def lin2squrt(value):
return round(np.sqrt(value)*11.27)
def squrt2lin(value):
return round(np.livecode(value/11.27))
def curved(value):
return round(np.sqrt(value)*11.27)
def Proj(x,y,z,angleX,angleY,angleZ):
rad = angleX * math.pi / 180
cosa = math.cos(rad)
sina = math.sin(rad)
y2 = y
y = y2 * cosa - z * sina
z = y2 * sina + z * cosa
rad = angleY * math.pi / 180
cosa = math.cos(rad)
sina = math.sin(rad)
z2 = z
z = z2 * cosa - x * sina
x = z2 * sina + x * cosa
rad = angleZ * math.pi / 180
cosa = math.cos(rad)
sina = math.sin(rad)
x2 = x
x = x2 * cosa - y * sina
y = x2 * sina + y * cosa
""" Transforms this 3D point to 2D using a perspective projection. """
factor = fov / (viewer_distance + z)
x = x * factor + centerX
y = - y * factor + centerY
return (x,y)
#
# Main
#
x0 = 200
y0 = 200
anglepos = 0
startime = datetime.now()
z = 0
def Code(LAY):
dots = []
xcenter = math.sin(math.radians(anglepos))
ycenter = math.cos(math.radians(anglepos))
if anglepos + 1 < 361:
anglepos += 1
else:
anglepos = 0
for angle in slinear(20, 0, 380):
#for counter in range(0,380):
t = timedelta.total_seconds(datetime.now() - startime)
x = math.sin(math.radians(angle))
y = math.cos(math.radians(angle))
dots.append(Proj(x,y,z,0,math.sin(math.radians(angle)),0))
# lj.PolyLineOneColor(Form, c = Liveform.color , layer = Liveform.layer, closed = Liveform.closed)
lj.rPolyLineOneColor(dots, c = LAY['color'], layer = LAY['number'], closed = False, xpos = xcenter * x0, ypos = ycenter * y0, resize = 1, rotx = math.sin(math.radians(angle)), roty = 0 , rotz = math.sin(math.radians(angle)))