#!/usr/local/bin/gnuplot -persist
# set terminal canvas  rounded size 600,400 enhanced fsize 10 lw 1.6 fontscale 1 name "rgba_lines_1" jsdir "."
# set output 'rgba_lines.1.js'
unset border
set angles degrees
unset key
set style arrow 1 head back noborder linecolor rgb variable  linewidth 3.000 dashtype solid size screen  0.030,15.000,90.000
set object  1 rect from -0.500000, -0.500000 to -0.300000, 0.00000
set object  1 front clip lw 1.0  dashtype solid fc  rgb "#bbbbbb"  fillstyle   solid 1.00 border lt -1
set object  2 rect from -0.300000, -0.300000 to -0.100000, 0.200000
set object  2 front clip lw 1.0  dashtype solid fc  rgb "#55bbbbbb"  fillstyle   solid 1.00 border lt -1
set object  3 rect from -0.100000, -0.100000 to 0.300000, 0.300000
set object  3 front clip lw 1.0  dashtype solid fc  rgb "#aabbbbbb"  fillstyle   solid 1.00 border lt -1
set object  4 rect from 0.300000, -0.400000 to 0.400000, 0.400000
set object  4 back clip lw 1.0  dashtype solid fc  rgb "#22bbbbbb"  fillstyle   solid 1.00 border lt -1
set object 10 circle center 0.150000, -0.150000, 0.00000 size 0.5 arc [0:360] wedge 
set object 10 behind clip lw 1.0  dashtype solid fc  rgb "cyan"  fillstyle   solid 1.00 border
set size ratio 1 1,1
set style data lines
unset xtics
unset ytics
set xrange [ -1.00000 : 1.00000 ] noreverse nowriteback
set x2range [ * : * ] noreverse writeback
set yrange [ -1.00000 : 1.00000 ] noreverse nowriteback
set y2range [ * : * ] noreverse writeback
set zrange [ * : * ] noreverse writeback
set cbrange [ * : * ] noreverse writeback
set rrange [ * : * ] noreverse writeback
set colorbox vertical origin screen 0.9, 0.2 size screen 0.05, 0.6 front  noinvert bdefault
fade(i) = (int(255.*i/360.) << 24) + 0xEF8000
## Last datafile plotted: "+"
plot sample [i=5:360:5] '+' using (0):(0):(cos(i)):(sin(i)):(fade(i))      with vector as 1