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/* ploticus data display engine. Software, documentation, and examples.
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* Copyright 1998-2002 Stephen C. Grubb (scg@jax.org).
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* Covered by GPL; see the file ./Copyright for details. */
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/* Low level elib drawing stubs.. */
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/* These issue driver requests only when a parameter actually changes */
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/* ======================================== */
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Epcode( 'z', 0.0, 0.0, Ecurbkcolor );
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/* ======================================== */
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/* move to x, y absolute */
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if( Eflip ) Epcode( 'M', (double)y , (double)x, "" );
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else Epcode( 'M', (double)x , (double)y, "" );
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/* ======================================== */
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/* line to x, y absolute */
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if( Eflip ) Epcode( 'L', (double)y , (double)x, "" );
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else Epcode( 'L', (double)x , (double)y, "" );
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/* ======================================== */
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/* path to x, y absolute (form a polygon to be shaded later) */
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if( Eflip ) Epcode( 'P', (double)y , (double)x, "" );
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else Epcode( 'P', (double)x , (double)y, "" );
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/* ======================================== */
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/* move to x, y data */
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if( Eflip ) Epcode( 'M', Eax((double) y ) , Eay((double) x ), "" );
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else Epcode( 'M', Eax((double) x ) , Eay((double) y ), "" );
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/* ======================================== */
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/* line to x, y data */
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if( Eflip ) Epcode( 'L', Eax((double) y ) , Eay((double) x ), "" );
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else Epcode( 'L', Eax((double) x ) , Eay((double) y ), "" );
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/* path to x, y data (form a polygon to be shaded later) */
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#define Epathu( x , y ) Epcode( 'P', Eax((double) x ) , Eay((double) y ), "" )
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/* ======================================== */
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/* handle multi-line text. */
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if( tolower(op) == 'l' ) op = 'T';
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else if( tolower(op) == 'c' ) op = 'C';
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else if( tolower(op) == 'r' ) op = 'J';
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GL_getseg( chunk, s, &i, "\n" );
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Epcode( op, 0.0, 0.0, chunk );
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if( i >= slen ) break;
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if( Ecurtextdirection == 0 ) y -= Ecurtextheight;
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else if( Ecurtextdirection == 90 ) x += Ecurtextheight;
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else if( Ecurtextdirection == 270 ) x -= Ecurtextheight;
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if( Eflip ) Emov( y, x );
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/* ======================================== */
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/* EFONT - Set font to s. If s is "" use standard font. */
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if( strlen( s ) < 1 ) {
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Epcode( 'F', 0.0, 0.0, Estandard_font );
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strcpy( Ecurfont, Estandard_font );
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else if( strcmp( s, Ecurfont )!= 0 ) {
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Epcode( 'F', 0.0, 0.0, s );
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strcpy( Ecurfont, s );
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/* ======================================== */
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/* ETEXTSIZE - Set textsize to x. If x is 0 use standard textsize.
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In any case, the size is scaled by the standard text scaling factor. */
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if( x == 0 ) p = Estandard_textsize;
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else p = (double)x * (double)(Estandard_textsize/10.0);
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if( (int)p != Ecurtextsize ) {
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Epcode( 'I', p, 0.0, "" );
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Ecurtextsize = (int)p;
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Ecurtextheight = (p+2.0)/72.0;
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if( p >= 14 ) Ecurtextheight = p / 72.0;
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if( Edev == 'g' && Ecurfont[0] == '\0' ) { /* "ascii" does not use preset sizes */
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/* get exact dimensions of one of the 5 gif text sizes available .. */
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if( p <= 6 ) { Ecurtextwidth = 0.05; Ecurtextheight = 9 / 72.0; } /* 7 */
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else if( p >= 7 && p <= 9 )
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{ Ecurtextwidth = 0.0615384; Ecurtextheight = 12 / 72.0; } /* 10 */
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else if( p >= 10 && p <= 12 )
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{ Ecurtextwidth = 0.0727272; Ecurtextheight = 14 / 72.0; } /* 12 */
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else if( p >= 13 && p <= 15 )
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{ Ecurtextwidth = 0.08; Ecurtextheight = 17 / 72.0; } /* 15 */
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else if( p >= 15 ) { Ecurtextwidth = 0.0930232; Ecurtextheight = 20 / 72.0; }
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else if( Edev != 'x' ) Ecurtextwidth = Ecurtextheight * 0.4;
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/* note: x11 driver supplies Ecurtextwidth in
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pcode() when text size is set */
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/* ======================================== */
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if( x != Ecurtextdirection ) {
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Epcode( 'D', (double)x , 0.0, "" );
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Ecurtextdirection = x ;
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/* ======================================== */
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/* if( Ecurpaper != x ) { deleted scg 2/29/00 trying to get multi-page landscape to work...*/
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Epcode( 'O', (double)x , 0.0, "" );
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/* ======================================== */
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/* ELINETYPE - Set line parameters. If linewidth is 0 use standard linescale.
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If pattern density is 0 use standard linescale. */
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Elinetype( pattern, linewidth, pat_dens )
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double linewidth, pat_dens;
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/* scale linewidth */
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if( linewidth == 0.0 ) linewidth = Estandard_lwscale;
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else linewidth = linewidth * Estandard_lwscale;
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if( pat_dens == 0.0 ) pat_dens = Estandard_lwscale;
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if( linewidth != Ecurlinewidth ||
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pattern != Ecurlinetype ||
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pat_dens != Ecurpatternfactor ) {
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sprintf( buf, "%d", pattern );
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Epcode( 'Y', linewidth, pat_dens, buf );
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Ecurlinewidth = linewidth;
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Ecurlinetype = pattern;
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Ecurpatternfactor = pat_dens;
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/* ======================================== */
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Epcode( 'Y', Estandard_lwscale, 1.0, "0" );
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Ecurlinewidth = Estandard_lwscale;
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Ecurpatternfactor = 1;
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/* ======================================== */
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/* set current color for lines and text to s. If s is "", use
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/* char color[40], fillpat[40]; */
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/* strip off fillpat spec and set flag? */
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if( s[0] == '\0' ) strcpy( Ecurcolor, Estandard_color );
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/* else if( strcmp( Ecurcolor, s )==0 ) return( 0 ); */ /* tried but screws up w/gif driver */
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* sscanf( s, "%s %s",
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else strcpy( Ecurcolor, s );
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Epcode( 'r', 0.0, 0.0, Ecurcolor );
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/* ======================================== */
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/* set background color.
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If background color is "" use standard background color. */
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if( color[0] != '\0' )strcpy( Ecurbkcolor, color );
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else strcpy( Ecurbkcolor, Estandard_bkcolor );
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/* ======================================== */
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/* fill currently defined rectangle/polygon with color c */
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if( strcmp( c, Ecurcolor )==0 ) { Efill(); return(0); }
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strcpy( oldcolor, Ecurcolor );
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Ecolor( oldcolor ); /* go back to color as it existed before.. */
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/* ======================================== */
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/* (Old) do shading, within the previously defined polygon path.. the shade can be 0 to 1 */
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sprintf( str, "%g", s );
added
removed
src/stub.c
