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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 <stdio.h>
#include <math.h>
#include <string.h>
#include "Math.h"
static void GraySquare();
static void GraySquare1();
/*------------------------------------------------------------
- z is a (n1,n2) matrix
- x is a (1,n1) matrix
- y is a (1,n2) matrix
- x,y,z are stored as one dimensionnal array in C
z : is the value of a function on the grid defined by x,y
on each rectangle the average value of z is computed
and [zmin,zmax] is linearly remapped to the [colormin,colormap]
values of colors in the current colormap
the color associated to zmoy is used for filling a specific rectangle
---------------------------------------------------------------*/
int C2F(xgray)(x,y,z,n1,n2,strflag,brect,aaint,l1)
double x[],y[],z[],brect[];
integer *n1,*n2,aaint[];
long int l1;
char strflag[];
{
double FRect[4],scx,scy,xofset,yofset;
static char logflag[]="nn";
integer IRect[4],Xdec[3],Ydec[3];
double xx[2],yy[2];
static integer *xm,*ym,err=0;
integer j,job=1;
integer nn1=1,nn2=2;
/** If Record is on **/
if (GetDriver()=='R')
StoreGray("gray",x,y,z,n1,n2,strflag,brect,aaint);
xx[0]=Mini(x,*n1);xx[1]=Maxi(x,*n1);
yy[0]=Mini(y,*n2);yy[1]=Maxi(y,*n2);
/** Boundaries of the frame **/
FrameBounds("gnn",xx,yy,&nn1,&nn2,aaint,strflag,brect,FRect,Xdec,Ydec);
if ( (int)strlen(strflag) >=2 && strflag[1]=='0') job=0;
Scale2D(job,FRect,IRect,aaint,&scx,&scy,&xofset,&yofset,logflag,&xm,&ym,Max((*n1),(*n2)),&err);
if ( err == 0) return(0);
/** Draw Axis or only rectangle **/
AxisDraw(FRect,IRect,Xdec,Ydec,aaint,scx,scy,xofset,yofset,strflag,logflag);
/** Drawing the curves **/
C2F(dr)("xset","clipping",&IRect[0],&IRect[1],&IRect[2],&IRect[3],PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
for ( j =0 ; j < (*n1) ; j++)
xm[j]= (int)(scx*(x[j]-FRect[0]) +xofset);
for ( j =0 ; j < (*n2) ; j++)
ym[j]= (int)(scy*(-y[j]+FRect[3]) +yofset);
GraySquare(xm,ym,z,*n1,*n2);
C2F(dr)("xset","clipoff",PI0,PI0,PI0,PI0, PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
C2F(dr)("xrect","v",&IRect[0],&IRect[1],&IRect[2],&IRect[3]
,PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
return(0);
}
static void GraySquare(x, y, z, n1, n2)
integer *x;
integer *y;
double *z;
integer n1;
integer n2;
{
double zmoy,zmax,zmin,zmaxmin;
integer i,j,verbose=0,whiteid,narg,fill[1],cpat,xz[2];
zmin=Mini(z,(n1)*(n2));
zmax=Maxi(z,(n1)*(n2));
zmaxmin=zmax-zmin;
if (zmaxmin <= SMDOUBLE) zmaxmin=SMDOUBLE;
C2F(dr)("xget","lastpattern",&verbose,&whiteid,&narg,
PI0,PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
C2F(dr)("xget","pattern",&verbose,&cpat,&narg,PI0,PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
C2F(dr)("xget","wdim",&verbose,xz,&narg, PI0, PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
for (i = 0 ; i < (n1)-1 ; i++)
for (j = 0 ; j < (n2)-1 ; j++)
{
integer w,h;
zmoy=1/4.0*(z[i+n1*j]+z[i+n1*(j+1)]+z[i+1+n1*j]+z[i+1+n1*(j+1)]);
fill[0]=1 + inint((whiteid-1)*(zmoy-zmin)/(zmaxmin));
C2F(dr)("xset","pattern",&(fill[0]),PI0,PI0,PI0,PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
w=Abs(x[i+1]-x[i]);h=Abs(y[j+1]-y[j]);
/* We don't trace rectangle which are totally out **/
if ( w != 0 && h != 0 && x[i] < xz[0] && y[j+1] < xz[1] && x[i]+w > 0 && y[j+1]+h > 0 )
{
if ( Abs(x[i]) < int16max && Abs(y[j+1]) < int16max && w < uns16max && h < uns16max)
{
/* fprintf(stderr,"Rectangle %d,%d : %d,%d,%d,%d\n",i,j,x[i],y[j+1],w,h); */
C2F(dr)("xfrect","v",&x[i],&y[j+1],&w,&h,PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
}
else
{
/* fprintf(stderr,"Rectangle too large \n"); */
}
}
}
C2F(dr)("xset","pattern",&cpat,PI0,PI0,PI0,PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
}
/*-------------------------------------------------------
z : of size n1*n2
the z value is interpreted as a color number inside the current colormap
z[i,j] is used as the color of a square [i-0.5,i+0.5] [j-0.5,j+0.5]
-------------------------------------------------------*/
int C2F(xgray1)(z,n1,n2,strflag,brect,aaint,l1)
double z[],brect[];
integer *n1,*n2,aaint[];
long int l1;
char strflag[];
{
double FRect[4],scx,scy,xofset,yofset;
static char logflag[]="nn";
integer IRect[4],Xdec[3],Ydec[3];
double xx[2],yy[2];
static integer *xm,*ym,err=0;
integer j,job=1;
integer nn1=1,nn2=2;
/** If Record is on **/
if (GetDriver()=='R')
StoreGray1("gray1",z,n1,n2,strflag,brect,aaint);
xx[0]=0.5;xx[1]= *n2+0.5;
yy[0]=0.5;yy[1]= *n1+0.5;
/** Boundaries of the frame **/
FrameBounds("gnn",xx,yy,&nn1,&nn2,aaint,strflag,brect,FRect,Xdec,Ydec);
if ( (int)strlen(strflag) >=2 && strflag[1]=='0') job=0;
Scale2D(job,FRect,IRect,aaint,&scx,&scy,&xofset,&yofset,logflag,&xm,&ym,Max((*n1+1),(*n2+1)),&err);
if ( err == 0) return(0);
/** Draw Axis or only rectangle **/
AxisDraw(FRect,IRect,Xdec,Ydec,aaint,scx,scy,xofset,yofset,strflag,logflag);
/** Drawing the curves **/
C2F(dr)("xset","clipping",&IRect[0],&IRect[1],&IRect[2],&IRect[3],PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
for ( j =0 ; j < (*n2+1) ; j++)
xm[j]= (int)(scx*(j+0.5 -FRect[0]) +xofset);
for ( j =0 ; j < (*n1+1) ; j++)
ym[j]= (int)(scy*(-((*n1)-j+0.5+1)+FRect[3]) +yofset);
GraySquare1(xm,ym,z,*n1+1,*n2+1);
C2F(dr)("xset","clipoff",PI0,PI0,PI0,PI0, PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
C2F(dr)("xrect","v",&IRect[0],&IRect[1],&IRect[2],&IRect[3]
,PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
return(0);
}
/*-------------------------------------------------------
x : of size n1 gives the x-values of the grid
y : of size n2 gives the y-values of the grid
z : of size (n1-1)*(n2-1) gives the f-values on the middle
of each rectangle.
z[i,j] is the value on the middle of rectangle
P1= x[i],y[j] x[i+1],y[j+1]
-------------------------------------------------------*/
static void GraySquare1(x, y, z, n1, n2)
integer *x;
integer *y;
double *z;
integer n1;
integer n2;
{
double zmoy,zmax,zmin,zmaxmin;
integer i,j,verbose=0,whiteid,narg,fill[1],cpat,xz[2];
zmin=Mini(z,(n1-1)*(n2-1));
zmax=Maxi(z,(n1-1)*(n2-1));
zmaxmin=zmax-zmin;
if (zmaxmin <= SMDOUBLE) zmaxmin=SMDOUBLE;
C2F(dr)("xget","lastpattern",&verbose,&whiteid,&narg,
PI0,PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
C2F(dr)("xget","pattern",&verbose,&cpat,&narg,PI0,PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
C2F(dr)("xget","wdim",&verbose,xz,&narg, PI0, PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
for (i = 0 ; i < (n1)-1 ; i++)
for (j = 0 ; j < (n2)-1 ; j++)
{
integer w,h;
fill[0]=Max(Min(z[i+(n1-1)*j],whiteid),0);
C2F(dr)("xset","pattern",&(fill[0]),PI0,PI0,PI0,PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
w=Abs(x[j+1]-x[j]);h=Abs(y[i+1]-y[i]);
/* We don't trace rectangle which are totally out **/
if ( w != 0 && h != 0 && x[j] < xz[0] && y[i+1] < xz[1] && x[j]+w > 0 && y[i+1]+h > 0 )
{
if ( Abs(x[j]) < int16max && Abs(y[i+1]) < int16max && w < uns16max && h < uns16max)
{
/* fprintf(stderr,"Rectangle %d,%d : %d,%d,%d,%d\n",i,j,x[i],y[j+1],w,h); */
C2F(dr)("xfrect","v",&x[j],&y[i+1],&w,&h,PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
}
else
{
/* fprintf(stderr,"Rectangle too large \n"); */
}
}
}
C2F(dr)("xset","pattern",&cpat,PI0,PI0,PI0,PI0,PI0,PD0,PD0,PD0,PD0,0L,0L);
}
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