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/*------------------------------------------------------------------------
Missile
XWindow and Postscript library for 2D and 3D plotting
Copyright (C) 1998 Chancelier Jean-Philippe
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 1, 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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
jpc@cergrene.enpc.fr
--------------------------------------------------------------------------*/
#include <string.h>
#ifdef __STDC__
#include <stdlib.h>
#else
#include <malloc.h>
#endif
#include <stdio.h>
#include <math.h>
#include "Math.h"
static void Plo2d2RealToPixel();
/*--------------------------------------------------------------------
C2F(plot2d2)(xf,x,y,n1,n2,style,strflag,legend,brect,aint)
Same as plot2d1_ but the curves are plotted in a piece-wise linear
style
--------------------------------------------------------------------------*/
int C2F(plot2d2)(xf,x,y,n1,n2,style,strflag,legend,brect,aaint,l1,l2,l3)
double x[],y[],brect[];
integer *n1,*n2,style[],aaint[];
char legend[],strflag[],xf[];
integer l1,l2,l3;
{
double FRect[4],scx,scy,xofset,yofset;
integer IRect[4],err=0,*xm,*ym,job=1,Xdec[3],Ydec[3];
/** Attention : 2*(*n2) **/
integer nn2=2*(*n2);
if ( CheckxfParam(xf)== 1) return(0);
/* Storing values if using the Record driver */
if (GetDriver()=='R')
StorePlot("plot2d2",xf,x,y,n1,n2,style,strflag,legend,brect,aaint);
/** Boundaries of the frame **/
FrameBounds(xf,x,y,n1,n2,aaint,strflag,brect,FRect,Xdec,Ydec);
/** Scales **/
if ( (int)strlen(strflag) >=2 && strflag[1]=='0') job=0;
Scale2D(job,FRect,IRect,aaint,&scx,&scy,&xofset,&yofset,&xf[1],&xm,&ym,(*n1)*nn2,&err);
if ( err == 0) return(0);
/** Real to Pixel values **/
Plo2d2RealToPixel(n1,n2,x,y,xm,ym,xf,FRect,scx,scy,xofset,yofset);
/** Draw Axis or only rectangle **/
AxisDraw(FRect,IRect,Xdec,Ydec,aaint,scx,scy,xofset,yofset,strflag,&xf[1]);
/** Drawing the curves **/
C2F(dr)("xset","clipping",&IRect[0],&IRect[1],&IRect[2],&IRect[3]
,PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
C2F(dr)("xpolys","v",xm,ym,style,n1,&nn2
,PI0,PD0,PD0,PD0,PD0,0L,0L);
C2F(dr)("xset","clipoff",PI0,PI0,PI0,PI0, PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
/** Drawing the Legends **/
if ((int)strlen(strflag) >=1 && strflag[0] == '1')
Legends(IRect,style,n1,legend);
return(0);
}
static void Plo2d2RealToPixel(n1, n2, x, y, xm, ym, xf, FRect, scx, scy, xofset, yofset)
integer *n1;
integer *n2;
double *x;
double *y;
integer *xm;
integer *ym;
char *xf;
double *FRect;
double scx;
double scy;
double xofset;
double yofset;
{
integer i,j;
/** Computing y-values **/
if ((int)strlen(xf) >= 3 && xf[2]=='l')
{
for ( i=0 ; i < (*n2) ; i++)
for (j=0 ; j< (*n1) ; j++)
ym[2*i+1+2*(*n2)*j]=
ym[2*i+2*(*n2)*j]=inint( scy*(-log10(y[i+(*n2)*j])+FRect[3])+yofset);
}
else
{
for ( i=0 ; i < (*n2) ; i++)
for (j=0 ; j< (*n1) ; j++)
ym[2*i+1+2*(*n2)*j]=
ym[2*i+2*(*n2)*j]=inint( scy*(-(y[i+(*n2)*j])+FRect[3])+yofset);
}
/** Computing x-values **/
switch (xf[0])
{
case 'e' :
/** No X-value given by the user **/
if ((int)strlen(xf) >= 2 && xf[1]=='l')
for (j=0 ; j< (*n1) ; j++)
{
for ( i=1 ; i < (*n2) ; i++)
{
xm[2*i+2*(*n2)*j]=inint(scx*(log10(i+1.0)-FRect[0])+xofset);
xm[2*i-1+2*(*n2)*j]=xm[2*i+2*(*n2)*j];
}
xm[2*(*n2)*j]=inint(scx*(-FRect[0])+ xofset);
xm[2*(*n2)-1+ 2*(*n2)*j]= xm[2*(*n2-1)+ 2*(*n2)*j];
}
else
for (j=0 ; j< (*n1) ; j++)
{
for ( i=1 ; i < (*n2) ; i++)
{
xm[2*i+2*(*n2)*j]=inint(scx*((i+1.0)-FRect[0])+xofset);
xm[2*i-1+2*(*n2)*j]=xm[2*i+2*(*n2)*j];
}
xm[2*(*n2)*j]=inint(scx*((1.0)-FRect[0])+xofset);
xm[2*(*n2)-1+ 2*(*n2)*j]= xm[2*(*n2-1)+ 2*(*n2)*j];
}
break ;
case 'o' :
if ((int)strlen(xf) >= 2 && xf[1]=='l')
for (j=0 ; j< (*n1) ; j++)
{
for ( i=1 ; i < (*n2) ; i++)
{
xm[2*i+2*(*n2)*j]=inint(scx*(log10(x[i])-FRect[0]) + xofset);
xm[2*i-1+2*(*n2)*j]=xm[2*i+2*(*n2)*j];
}
xm[2*(*n2)*j]=inint(scx*(log10(x[0])-FRect[0]) + xofset);
xm[2*(*n2)-1+ 2*(*n2)*j]= xm[2*(*n2-1)+ 2*(*n2)*j];
}
else
for (j=0 ; j< (*n1) ; j++)
{
for ( i=1 ; i < (*n2) ; i++)
{
xm[2*i+2*(*n2)*j]=inint(scx*(x[i]-FRect[0]) + xofset);
xm[2*i-1+2*(*n2)*j]=xm[2*i+2*(*n2)*j];
}
xm[2*(*n2)*j]=inint(scx*(x[0]-FRect[0]) + xofset);
xm[2*(*n2)-1+ 2*(*n2)*j]= xm[2*(*n2-1)+ 2*(*n2)*j];
}
break;
case 'g' :
default:
if ((int)strlen(xf) >= 2 && xf[1]=='l')
for (j=0 ; j< (*n1) ; j++)
{
for ( i=1 ; i < (*n2) ; i++)
{
xm[2*i+2*(*n2)*j]=inint( scx*(log10(x[i+(*n2)*j]) -FRect[0])+xofset);
xm[2*i-1+2*(*n2)*j]=xm[2*i+2*(*n2)*j];
}
xm[2*(*n2)*j]=inint( scx*(log10(x[(*n2)*j]) -FRect[0])+xofset);
xm[2*(*n2)-1+ 2*(*n2)*j]= xm[2*(*n2-1)+ 2*(*n2)*j];
}
else
for (j=0 ; j< (*n1) ; j++)
{
for ( i=1 ; i < (*n2) ; i++)
{
xm[2*i+2*(*n2)*j]=inint( scx*(x[i+(*n2)*j] -FRect[0])+xofset);
xm[2*i-1+2*(*n2)*j]=xm[2*i+2*(*n2)*j];
}
xm[2*(*n2)*j]=inint( scx*(x[(*n2)*j] -FRect[0])+xofset);
xm[2*(*n2)-1+ 2*(*n2)*j]= xm[2*(*n2-1)+ 2*(*n2)*j];
}
break;
}
}
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