LJ/clitools/generators/example.py

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2020-09-26 22:33:30 +00:00
#!/usr/bin/python3
# -*- coding: utf-8 -*-
# -*- mode: Python -*-
'''
example, based on custom
v0.1.0
A copy of square.py you can modify to code your plugin.
custom1 has necessary hooks in LJ.conf, webui and so on.
LICENCE : CC
by Sam Neurohack
'''
import sys
import os
ljpath = r'%s' % os.getcwd().replace('\\','/')
# import from shell
sys.path.append(ljpath +'/../../libs/')
#import from LJ
sys.path.append(ljpath +'/libs/')
print(ljpath+'/../libs/')
import lj23layers as lj
sys.path.append('../libs')
import math
import time
import argparse
print ("")
print ("Arguments parsing if needed...")
argsparser = argparse.ArgumentParser(description="Custom1 example for LJ")
argsparser.add_argument("-v","--verbose",help="Verbosity level (0 by default)",default=0,type=int)
args = argsparser.parse_args()
# Useful variables init.
white = lj.rgb2int(255,255,255)
red = lj.rgb2int(255,0,0)
blue = lj.rgb2int(0,0,255)
green = lj.rgb2int(0,255,0)
width = 800
height = 600
centerX = width / 2
centerY = height / 2
# 3D to 2D projection parameters
fov = 256
viewer_distance = 2.2
# Anaglyph computation parameters for right and left eyes.
# algorythm come from anaglyph geo maps
eye_spacing = 100
nadir = 0.5
observer_altitude = 30000
map_layerane_altitude = 0.0
# square coordinates : vertices that compose each of the square.
vertices = [
(- 1.0, 1.0,- 1.0),
( 1.0, 1.0,- 1.0),
( 1.0,- 1.0,- 1.0),
(- 1.0,- 1.0,- 1.0)
]
face = [0,1,2,3]
#
# LJ inits
#
layer = 0
# Define properties for each drawn "element" : name, intensity, active, xy, color, red, green, blue, layer , closed
Leftsquare = lj.FixedObject('Leftsquare', True, 255, [], red, 255, 0, 0, layer , True)
Rightsquare = lj.FixedObject('Rightsquare', True, 255, [], green, 0, 255, 0, layer , True)
# 'Destination' for given layer : name, number, active, layer , scene, laser
Dest0 = lj.DestObject('0', 0, True, 0 , 0, 0) # Dest0 will send layer 0 points to scene 0, laser 0
#
# Anaglyph computation : different X coordinate for each eye
#
def LeftShift(elevation):
diff = elevation - map_layerane_altitude
return nadir * eye_spacing * diff / (observer_altitude - elevation)
def RightShift(elevation):
diff = map_layerane_altitude - elevation
return (1 - nadir) * eye_spacing * diff / (observer_altitude - elevation)
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
#
def Run():
Left = []
Right = []
counter =0
try:
while True:
Left = []
Right = []
x = vertices[0][0]
y = vertices[0][1]
z = vertices[0][2]
# lj tracers will "move" the laser to this first point in black, then move to the next with second point color.
# for more accuracy in dac emulator, repeat this first point.
# generate all points in square.
for point in face:
x = vertices[point][0]
y = vertices[point][1]
z = vertices[point][2]
left.append(proj(x+leftshift(z*25),y,z,0,counter,0))
right.append(proj(x+rightshift(z*25),y,z,0,counter,0))
lj.polylineonecolor(left, c = leftsquare.color , layer = leftsquare.layer, closed = leftsquare.closed)
lj.polylineonecolor(right, c = rightsquare.color , layer = rightsquare.layer, closed = rightsquare.closed)
lj.drawdests()
time.sleep(0.1)
counter += 1
if counter > 360:
counter = 0
except KeyboardInterrupt:
pass
# Gently stop on CTRL C
finally:
lj.ClosePlugin()
Run()