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## Copyright (C) 2003 Joao Cardoso.
##
## This program is free software; you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by the
## Free Software Foundation; either version 2 of the License, or (at your
## option) any later version.
##
## This program 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
## General Public License for more details.
##
## This file is part of plplot_octave.
function __pl_meshplotit()
global __pl
global DRAW_LINEXY MAG_COLOR BASE_CONT
global TOP_CONT SURF_CONT DRAW_SIDES FACETED MESH
strm = __pl_init;
xm = __pl.lxm(strm); xM = __pl.lxM(strm);
ym = __pl.lym(strm); yM = __pl.lyM(strm);
zm = __pl.lzm(strm); zM = __pl.lzM(strm);
if (xm == xM)
xM = xm +10*eps;
endif
if (ym == yM)
yM = ym +10*eps;
endif
if (zm == zM)
zM = zm +10*eps;
endif
if (__pl.axis_st(strm))
xm = __pl.axis(strm,1); xM = __pl.axis(strm,2); # at least x always exist
if (length(__pl.axis) >= 4)
ym = __pl.axis(strm,3); yM = __pl.axis(strm,4);
else
__pl.axis(strm,3) = ym; __pl.axis(strm,4) = yM;
endif
if (length(__pl.axis) == 6)
zm = __pl.axis(strm,5); zM = __pl.axis(strm,6);
else
__pl.axis(strm,5) = zm; __pl.axis(strm,6) = zM;
endif
else # make axis() return current axis
__pl.axis(strm,1) = xm; __pl.axis(strm,2) = xM;
__pl.axis(strm,3) = ym; __pl.axis(strm,4) = yM;
__pl.axis(strm,5) = zm; __pl.axis(strm,6) = zM;
endif
plcol0(15);pllsty(1);
if (__pl.multi(strm) == 1) # multiplot, erase current subwindow
plclear;
else
pladv(0);
endif
plvpor(0, 1, 0, 0.95);
plwind(-1.6, 1.6, -1.3, 2.2);
plw3d(2, 2, 2, xm, xM, ym, yM, zm, zM, __pl.alt(strm), __pl.az(strm))
plbox3("bnstu", tdeblank(__pl.xlabel(strm,:)), 0.0, 0,
"bnstu", tdeblank(__pl.ylabel(strm,:)), 0.0, 0,
"bcmnstuv", tdeblank(__pl.zlabel(strm,:)), 0.0, 0);
plcol0(1);
nlev = 10;
st = (zM-zm)/nlev/2;
clevel = (linspace(zm+st, zM-st, nlev))';
levs = 0;
shad = tdeblank(__pl.shading(strm,:));
switch (shad)
case "flat"
sh = 0;
case "faceted"
sh = FACETED;
case "contour"
sh = SURF_CONT;
levs = clevel;
endswitch
for items=1:__pl.items(strm)-1
x = __pl.x{items, strm};
y = __pl.y{items, strm};
z = __pl.z{items, strm};
## kludge, use "fmt" as plot type. But __pl_plotit still uses __pl.type
type = __pl.fmt{items, strm};
switch (type)
case 100 ## mesh
plmesh(x, y, z', DRAW_LINEXY + MAG_COLOR);
case 101 ## meshc
plmeshc(x, y, z', DRAW_LINEXY + MAG_COLOR + BASE_CONT, clevel);
case 102 ## meshz
plot3d(x, y, z', DRAW_LINEXY + MAG_COLOR, 1);
case 103 ## surf
plsurf3d(x, y, z', MAG_COLOR + sh, clevel);
case 104 ## surfc
plsurf3d(x, y, z', MAG_COLOR + BASE_CONT + sh, clevel)
case 105 ## surfl
pllightsource(__pl.light(1), __pl.light(2), __pl.light(3));
plsurf3d(x, y, z', sh, levs);
endswitch
endfor
plcol0(15);
plmtex("t", 1, 0.5,0.5, tdeblank(__pl.tlabel(strm,:)));
plflush;
endfunction
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