mirror of
git://projects.qi-hardware.com/openwrt-packages.git
synced 2024-11-18 00:44:40 +02:00
362 lines
7.5 KiB
Lua
362 lines
7.5 KiB
Lua
--[[ $Id: x14.lua 10793 2010-02-06 01:48:39Z hbabcock $
|
|
|
|
Demo of multiple stream/window capability (requires Tk or Tcl-DP).
|
|
|
|
Maurice LeBrun
|
|
IFS, University of Texas at Austin
|
|
|
|
Copyright (C) 2009 Werner Smekal
|
|
|
|
This file is part of PLplot.
|
|
|
|
PLplot is free software you can redistribute it and/or modify
|
|
it under the terms of the GNU General Library Public License as published
|
|
by the Free Software Foundation either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
PLplot is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public License
|
|
along with PLplot if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
--]]
|
|
|
|
-- initialise Lua bindings for PLplot examples.
|
|
dofile("plplot_examples.lua")
|
|
|
|
xs = {}
|
|
ys = {}
|
|
space0 = {}
|
|
mark0 = {}
|
|
space1 = { 1500 }
|
|
mark1 = { 1500 }
|
|
|
|
|
|
function plot1()
|
|
x = {}
|
|
y = {}
|
|
|
|
for i = 1, 60 do
|
|
x[i] = xoff + xscale*i/60
|
|
y[i] = yoff + yscale*x[i]^2
|
|
end
|
|
|
|
xmin = x[1]
|
|
xmax = x[60]
|
|
ymin = y[1]
|
|
ymax = y[60]
|
|
|
|
for i = 1, 6 do
|
|
xs[i] = x[(i-1)*10 + 4]
|
|
ys[i] = y[(i-1)*10 + 4]
|
|
end
|
|
|
|
-- Set up the viewport and window using PLENV. The range in X is
|
|
-- 0.0 to 6.0, and the range in Y is 0.0 to 30.0. The axes are
|
|
-- scaled separately (just = 0), and we just draw a labelled
|
|
-- box (axis = 0).
|
|
pl.col0(1)
|
|
pl.env(xmin, xmax, ymin, ymax, 0, 0)
|
|
pl.col0(6)
|
|
pl.lab("(x)", "(y)", "#frPLplot Example 1 - y=x#u2")
|
|
|
|
-- Plot the data points
|
|
pl.col0(9)
|
|
pl.poin(xs, ys, 9)
|
|
|
|
-- Draw the line through the data
|
|
pl.col0(4)
|
|
pl.line(x, y)
|
|
pl.flush()
|
|
end
|
|
|
|
|
|
function plot2()
|
|
x = {}
|
|
y = {}
|
|
|
|
-- Set up the viewport and window using PLENV. The range in X is -2.0 to
|
|
-- 10.0, and the range in Y is -0.4 to 2.0. The axes are scaled separately
|
|
-- (just = 0), and we draw a box with axes (axis = 1).
|
|
pl.col0(1)
|
|
pl.env(-2, 10, -0.4, 1.2, 0, 1)
|
|
pl.col0(2)
|
|
pl.lab("(x)", "sin(x)/x", "#frPLplot Example 1 - Sinc Function")
|
|
|
|
-- Fill up the arrays
|
|
for i = 1, 100 do
|
|
x[i] = (i-20)/6
|
|
y[i] = 1
|
|
if x[i]~=0 then
|
|
y[i] = math.sin(x[i])/x[i]
|
|
end
|
|
end
|
|
|
|
-- Draw the line
|
|
pl.col0(3)
|
|
pl.line(x, y)
|
|
pl.flush()
|
|
end
|
|
|
|
|
|
function plot3()
|
|
x = {}
|
|
y = {}
|
|
|
|
-- For the final graph we wish to override the default tick intervals, and
|
|
-- so do not use PLENV
|
|
pl.adv(0)
|
|
|
|
-- Use standard viewport, and define X range from 0 to 360 degrees, Y range
|
|
-- from -1.2 to 1.2.
|
|
pl.vsta()
|
|
pl.wind(0, 360, -1.2, 1.2)
|
|
|
|
-- Draw a box with ticks spaced 60 degrees apart in X, and 0.2 in Y.
|
|
pl.col0(1)
|
|
pl.box("bcnst", 60, 2, "bcnstv", 0.2, 2)
|
|
|
|
-- Superimpose a dashed line grid, with 1.5 mm marks and spaces. plstyl
|
|
-- expects a pointer!!
|
|
pl.styl(mark1, space1)
|
|
pl.col0(2)
|
|
pl.box("g", 30, 0, "g", 0.2, 0)
|
|
pl.styl(mark0, space0)
|
|
|
|
pl.col0(3)
|
|
pl.lab("Angle (degrees)", "sine", "#frPLplot Example 1 - Sine function")
|
|
|
|
for i = 1, 101 do
|
|
x[i] = 3.6 * (i-1)
|
|
y[i] = math.sin(x[i]*math.pi/180)
|
|
end
|
|
|
|
pl.col0(4)
|
|
pl.line(x, y)
|
|
pl.flush()
|
|
end
|
|
|
|
|
|
function plot4()
|
|
x0 = {}
|
|
y0 = {}
|
|
x = {}
|
|
y = {}
|
|
|
|
dtr = math.pi/180
|
|
for i = 1, 361 do
|
|
x0[i] = math.cos(dtr*(i-1))
|
|
y0[i] = math.sin(dtr*(i-1))
|
|
end
|
|
|
|
-- Set up viewport and window, but do not draw box
|
|
pl.env(-1.3, 1.3, -1.3, 1.3, 1, -2)
|
|
for i = 1, 10 do
|
|
for j = 1, 361 do
|
|
x[j] = 0.1*i*x0[j]
|
|
y[j] = 0.1*i*y0[j]
|
|
end
|
|
|
|
-- Draw circles for polar grid
|
|
pl.line(x, y)
|
|
end
|
|
|
|
pl.col0(2)
|
|
for i = 1, 12 do
|
|
theta = 30.0 * (i-1)
|
|
dx = math.cos(dtr * theta)
|
|
dy = math.sin(dtr * theta)
|
|
|
|
-- Draw radial spokes for polar grid
|
|
pl.join(0, 0, dx, dy)
|
|
|
|
-- Write labels for angle
|
|
-- Slightly off zero to avoid floating point logic flips at 90 and 270 deg.
|
|
if dx>=-0.00001 then
|
|
pl.ptex(dx, dy, dx, dy, -0.15, tostring(theta))
|
|
else
|
|
pl.ptex(dx, dy, -dx, -dy, 1.15, tostring(theta))
|
|
end
|
|
end
|
|
|
|
x = {}
|
|
y = {}
|
|
|
|
-- Draw the graph
|
|
for i = 1, 361 do
|
|
r = math.sin(dtr * (5*(i-1)))
|
|
x[i] = x0[i] * r
|
|
y[i] = y0[i] * r
|
|
end
|
|
|
|
pl.col0(3)
|
|
pl.line(x, y)
|
|
|
|
pl.col0(4)
|
|
pl.mtex("t", 2, 0.5, 0.5, "#frPLplot Example 3 - r(#gh)=sin 5#gh")
|
|
pl.flush()
|
|
end
|
|
|
|
-- Demonstration of contour plotting
|
|
|
|
XPTS = 35
|
|
YPTS = 46
|
|
XSPA = 2/(XPTS-1)
|
|
YSPA = 2/(YPTS-1)
|
|
|
|
tr = { XSPA, 0, -1, 0, YSPA, -1 }
|
|
|
|
function mypltr(x, y)
|
|
tx = tr[1]*x + tr[2]*y + tr[3]
|
|
ty = tr[4]*x + tr[5]*y + tr[6]
|
|
|
|
return tx, ty
|
|
end
|
|
|
|
clevel = { -1, -.8, -.6, -.4, -.2, 0, .2, .4, .6, .8, 1 }
|
|
|
|
function plot5()
|
|
mark = { 1500 }
|
|
space = { 1500 }
|
|
|
|
-- Set up function arrays
|
|
z = {}
|
|
w = {}
|
|
|
|
for i = 1, XPTS do
|
|
xx = (i-1-math.floor(XPTS/2))/math.floor(XPTS/2)
|
|
z[i] = {}
|
|
w[i] = {}
|
|
for j = 1, YPTS do
|
|
yy = (j-1-math.floor(YPTS/2))/math.floor(YPTS/2)-1
|
|
z[i][j] = xx * xx - yy * yy
|
|
w[i][j] = 2 * xx * yy
|
|
end
|
|
end
|
|
|
|
pl.env(-1, 1, -1, 1, 0, 0)
|
|
pl.col0(2)
|
|
pl.cont(z, 1, XPTS, 1, YPTS, clevel, "mypltr")
|
|
pl.styl(mark, space)
|
|
pl.col0(3)
|
|
pl.cont(w, 1, XPTS, 1, YPTS, clevel, "mypltr")
|
|
pl.col0(1)
|
|
pl.lab("X Coordinate", "Y Coordinate", "Streamlines of flow")
|
|
pl.flush()
|
|
end
|
|
|
|
|
|
----------------------------------------------------------------------------
|
|
-- main
|
|
--
|
|
-- Plots several simple functions from other example programs.
|
|
--
|
|
-- This version sends the output of the first 4 plots (one page) to two
|
|
-- independent streams.
|
|
----------------------------------------------------------------------------
|
|
|
|
-- Select either TK or DP driver and use a small window
|
|
-- Using DP results in a crash at the end due to some odd cleanup problems
|
|
-- The geometry strings MUST be in writable memory
|
|
geometry_master = "500x410+100+200"
|
|
geometry_slave = "500x410+650+200"
|
|
|
|
-- plplot initialization
|
|
-- Parse and process command line arguments
|
|
pl.parseopts(arg, pl.PL_PARSE_FULL)
|
|
|
|
-- If valid geometry specified on command line, use it for both streams.
|
|
xp0, yp0, xleng0, yleng0, xoff0, yoff0 = pl.gpage()
|
|
valid_geometry = xleng0>0 and yleng0>0
|
|
|
|
-- Set up first stream
|
|
if valid_geometry==true then
|
|
pl.spage(xp0, yp0, xleng0, yleng0, xoff0, yoff0)
|
|
else
|
|
pl.setopt("geometry", geometry_master)
|
|
end
|
|
|
|
pl.ssub(2, 2)
|
|
pl.init()
|
|
|
|
driver = pl.gdev()
|
|
fam, num, bmax = pl.gfam()
|
|
|
|
print("Demo of multiple output streams via the " .. driver .." driver.")
|
|
print("Running with the second stream as slave to the first.\n")
|
|
|
|
-- Start next stream
|
|
pl.sstrm(1)
|
|
|
|
if valid_geometry==true then
|
|
pl.spage(xp0, yp0, xleng0, yleng0, xoff0, yoff0)
|
|
else
|
|
pl.setopt("geometry", geometry_slave)
|
|
end
|
|
|
|
-- Turn off pause to make this a slave (must follow master)
|
|
pl.spause(0)
|
|
pl.sdev(driver)
|
|
pl.sfam(fam,num,bmax)
|
|
|
|
-- Currently number of digits in format number can only be
|
|
--set via the command line option
|
|
pl.setopt("fflen", "2")
|
|
pl.init()
|
|
|
|
-- Set up the data & plot
|
|
-- Original case
|
|
pl.sstrm(0)
|
|
|
|
xscale = 6
|
|
yscale = 1
|
|
xoff = 0
|
|
yoff = 0
|
|
plot1()
|
|
|
|
-- Set up the data & plot
|
|
xscale = 1
|
|
yscale = 1e6
|
|
plot1()
|
|
|
|
-- Set up the data & plot
|
|
xscale = 1.
|
|
yscale = 1.e-6
|
|
digmax = 2
|
|
pl.syax(digmax, 0)
|
|
plot1()
|
|
|
|
-- Set up the data & plot
|
|
xscale = 1
|
|
yscale = 0.0014
|
|
yoff = 0.0185
|
|
digmax = 5
|
|
pl.syax(digmax, 0)
|
|
plot1()
|
|
|
|
-- To slave
|
|
-- The pleop() ensures the eop indicator gets lit.
|
|
pl.sstrm(1)
|
|
plot4()
|
|
pl.eop()
|
|
|
|
-- Back to master
|
|
pl.sstrm(0)
|
|
plot2()
|
|
plot3()
|
|
|
|
-- To slave
|
|
pl.sstrm(1)
|
|
plot5()
|
|
pl.eop()
|
|
|
|
-- Back to master to wait for user to advance
|
|
pl.sstrm(0)
|
|
pl.eop()
|
|
|
|
-- Call plend to finish off.
|
|
pl.plend()
|