/usr/share/doc/libplplot12/examples/c/x15c.c is in libplplot-dev 5.10.0+dfsg2-0.1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 | // $Id: x15c.c 12319 2013-05-01 21:51:24Z airwin $
//
// Shade plot demo.
//
// Maurice LeBrun
// IFS, University of Texas at Austin
// 31 Aug 1993
//
#include "plcdemos.h"
#define XPTS 35 // Data points in x
#define YPTS 46 // Data points in y
PLFLT z[XPTS][YPTS], zmin, zmax;
// Function prototypes
static void plot1( void );
static void plot2( void );
static void plot3( void );
static void f2mnmx( PLFLT *, PLINT, PLINT, PLFLT *, PLFLT * );
//static void cmap1_init1( void );
static void cmap1_init2( void );
//--------------------------------------------------------------------------
// main
//
// Does a variety of shade plots.
//--------------------------------------------------------------------------
int
main( int argc, const char *argv[] )
{
int i, j;
PLFLT xx, yy;
// Parse and process command line arguments
(void) plparseopts( &argc, argv, PL_PARSE_FULL );
// Set up color map 0
//
// plscmap0n(3);
//
// Set up color map 1
cmap1_init2();
// Initialize plplot
plinit();
// Set up data array
for ( i = 0; i < XPTS; i++ )
{
xx = (double) ( i - ( XPTS / 2 ) ) / (double) ( XPTS / 2 );
for ( j = 0; j < YPTS; j++ )
{
yy = (double) ( j - ( YPTS / 2 ) ) / (double) ( YPTS / 2 ) - 1.0;
z[i][j] = xx * xx - yy * yy + ( xx - yy ) / ( xx * xx + yy * yy + 0.1 );
}
}
f2mnmx( &z[0][0], XPTS, YPTS, &zmin, &zmax );
plot1();
plot2();
plot3();
plend();
exit( 0 );
}
//--------------------------------------------------------------------------
// cmap1_init1
//
// Initializes color map 1 in HLS space.
//--------------------------------------------------------------------------
//static void
//cmap1_init1( void )
//{
// PLFLT i[4], h[4], l[4], s[4];
//
// i[0] = 0; // left boundary
// i[1] = 0.45; // just before center
// i[2] = 0.55; // just after center
// i[3] = 1; // right boundary
//
// h[0] = 260; // hue -- low: blue-violet
// h[1] = 260; // only change as we go over vertex
// h[2] = 20; // hue -- high: red
// h[3] = 20; // keep fixed
//
//#if 1
// l[0] = 0.5; // lightness -- low
// l[1] = 0.0; // lightness -- center
// l[2] = 0.0; // lightness -- center
// l[3] = 0.5; // lightness -- high
//#else
// plscolbg( 255, 255, 255 );
// l[0] = 0.5; // lightness -- low
// l[1] = 1.0; // lightness -- center
// l[2] = 1.0; // lightness -- center
// l[3] = 0.5; // lightness -- high
//#endif
// s[0] = 1; // maximum saturation
// s[1] = 1; // maximum saturation
// s[2] = 1; // maximum saturation
// s[3] = 1; // maximum saturation
//
// c_plscmap1l( 0, 4, i, h, l, s, NULL );
//}
//--------------------------------------------------------------------------
// cmap1_init2
//
// Initializes color map 1 in HLS space.
//--------------------------------------------------------------------------
static void
cmap1_init2( void )
{
PLFLT i[4], h[4], l[4], s[4];
i[0] = 0; // left boundary
i[1] = 0.45; // just before center
i[2] = 0.55; // just after center
i[3] = 1; // right boundary
h[0] = 260; // hue -- low: blue-violet
h[1] = 260; // only change as we go over vertex
h[2] = 20; // hue -- high: red
h[3] = 20; // keep fixed
#if 1
l[0] = 0.6; // lightness -- low
l[1] = 0.0; // lightness -- center
l[2] = 0.0; // lightness -- center
l[3] = 0.6; // lightness -- high
#else
plscolbg( 255, 255, 255 );
l[0] = 0.5; // lightness -- low
l[1] = 1.0; // lightness -- center
l[2] = 1.0; // lightness -- center
l[3] = 0.5; // lightness -- high
#endif
s[0] = 1; // saturation -- low
s[1] = 0.5; // saturation -- center
s[2] = 0.5; // saturation -- center
s[3] = 1; // saturation -- high
c_plscmap1l( 0, 4, i, h, l, s, NULL );
}
//--------------------------------------------------------------------------
// plot1
//
// Illustrates a single shaded region.
//--------------------------------------------------------------------------
static void
plot1( void )
{
PLFLT shade_min, shade_max, sh_color;
PLINT sh_cmap = 0;
PLINT min_color = 0, max_color = 0;
PLFLT sh_width, min_width = 0., max_width = 0.;
pladv( 0 );
plvpor( 0.1, 0.9, 0.1, 0.9 );
plwind( -1.0, 1.0, -1.0, 1.0 );
// Plot using identity transform
shade_min = zmin + ( zmax - zmin ) * 0.4;
shade_max = zmin + ( zmax - zmin ) * 0.6;
sh_color = 7;
sh_width = 2.;
min_color = 9;
max_color = 2;
min_width = 2.;
max_width = 2.;
plpsty( 8 );
plshade1( &z[0][0], XPTS, YPTS, NULL, -1., 1., -1., 1.,
shade_min, shade_max,
sh_cmap, sh_color, sh_width,
min_color, min_width, max_color, max_width,
plfill, 1, NULL, NULL );
plcol0( 1 );
plbox( "bcnst", 0.0, 0, "bcnstv", 0.0, 0 );
plcol0( 2 );
pllab( "distance", "altitude", "Bogon flux" );
}
//--------------------------------------------------------------------------
// plot2
//
// Illustrates multiple adjacent shaded regions, using different fill
// patterns for each region.
//--------------------------------------------------------------------------
static void
plot2( void )
{
PLFLT shade_min, shade_max, sh_color;
PLINT sh_cmap = 0;
PLINT min_color = 0, max_color = 0;
PLFLT sh_width, min_width = 0., max_width = 0.;
int i;
static PLINT nlin[10] = { 1, 1, 1, 1, 1, 2, 2, 2, 2, 2 };
static PLINT inc[10][2] = { { 450, 0 }, { -450, 0 }, { 0, 0 }, { 900, 0 },
{ 300, 0 }, { 450, -450 }, { 0, 900 }, { 0, 450 },
{ 450, -450 }, { 0, 900 } };
static PLINT del[10][2] = { { 2000, 2000 }, { 2000, 2000 }, { 2000, 2000 },
{ 2000, 2000 }, { 2000, 2000 }, { 2000, 2000 },
{ 2000, 2000 }, { 2000, 2000 }, { 4000, 4000 },
{ 4000, 2000 } };
sh_width = 2.;
pladv( 0 );
plvpor( 0.1, 0.9, 0.1, 0.9 );
plwind( -1.0, 1.0, -1.0, 1.0 );
// Plot using identity transform
for ( i = 0; i < 10; i++ )
{
shade_min = zmin + ( zmax - zmin ) * i / 10.0;
shade_max = zmin + ( zmax - zmin ) * ( i + 1 ) / 10.0;
sh_color = i + 6;
plpat( nlin[i], inc[i], del[i] );
plshade1( &z[0][0], XPTS, YPTS, NULL, -1., 1., -1., 1.,
shade_min, shade_max,
sh_cmap, sh_color, sh_width,
min_color, min_width, max_color, max_width,
plfill, 1, NULL, NULL );
}
plcol0( 1 );
plbox( "bcnst", 0.0, 0, "bcnstv", 0.0, 0 );
plcol0( 2 );
pllab( "distance", "altitude", "Bogon flux" );
}
//--------------------------------------------------------------------------
// plot3
//
// Illustrates shaded regions in 3d, using a different fill pattern for
// each region.
//--------------------------------------------------------------------------
static void
plot3( void )
{
static PLFLT xx[2][5] = { { -1.0, 1.0, 1.0, -1.0, -1.0 },
{ -1.0, 1.0, 1.0, -1.0, -1.0 } };
static PLFLT yy[2][5] = { { 1.0, 1.0, 0.0, 0.0, 1.0 },
{ -1.0, -1.0, 0.0, 0.0, -1.0 } };
static PLFLT zz[2][5] = { { 0.0, 0.0, 1.0, 1.0, 0.0 },
{ 0.0, 0.0, 1.0, 1.0, 0.0 } };
pladv( 0 );
plvpor( 0.1, 0.9, 0.1, 0.9 );
plwind( -1.0, 1.0, -1.0, 1.0 );
plw3d( 1., 1., 1., -1.0, 1.0, -1.0, 1.0, 0.0, 1.5, 30, -40 );
// Plot using identity transform
plcol0( 1 );
plbox3( "bntu", "X", 0.0, 0, "bntu", "Y", 0.0, 0, "bcdfntu", "Z", 0.5, 0 );
plcol0( 2 );
pllab( "", "", "3-d polygon filling" );
plcol0( 3 );
plpsty( 1 );
plline3( 5, xx[0], yy[0], zz[0] );
plfill3( 4, xx[0], yy[0], zz[0] );
plpsty( 2 );
plline3( 5, xx[1], yy[1], zz[1] );
plfill3( 4, xx[1], yy[1], zz[1] );
}
//--------------------------------------------------------------------------
// f2mnmx
//
// Returns min & max of input 2d array.
//--------------------------------------------------------------------------
#define F( a, b ) ( f[a * ny + b] )
static void
f2mnmx( PLFLT *f, PLINT nx, PLINT ny, PLFLT *fnmin, PLFLT *fnmax )
{
int i, j;
*fnmax = F( 0, 0 );
*fnmin = *fnmax;
for ( i = 0; i < nx; i++ )
{
for ( j = 0; j < ny; j++ )
{
*fnmax = MAX( *fnmax, F( i, j ) );
*fnmin = MIN( *fnmin, F( i, j ) );
}
}
}
|