draw_map.c

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#include "prototypes.h"
 
 
void draw_map(Drawable pix,int h,int display_flag)
 
{
extern struct maplayer *smaplayer[100];
extern int off[100],npoint[2],zoom;
extern GC gc;
extern unsigned long cmap[16];
extern Widget drawing_area;
extern Display *display;
extern Font font[10];
extern XFontStruct *info_font[10];
struct maplayer *maplayer;
int i,mapno,ind,xc,yc,text_width,length,no;
int  x1,y1,xadd,yadd,color,izoom,MY=10;
float xrat,yrat,mult,dmult,cmult;
long xmin,xmax,ymin,ymax;
signed long xcen,ycen,lint1,lint2;
Dimension width,height;
Arg args[10];
signed long XSIZE,YSIZE;
extern struct display_set display_set[4];
XPoint point[10000];
int line_width,line_style,cap_style,join_style;
int yheight;
int offset;
 
XSetFont(display,gc,font[0]);
 
yheight=info_font[0]->ascent/2;
line_width=0;
line_style=LineSolid;
cap_style=CapButt;
join_style=JoinMiter;
 
XSetFillRule(display,gc,WindingRule);
XSetLineAttributes(display,gc,line_width,line_style,cap_style,
                         join_style);
 
XtSetArg(args[0],XtNwidth,&width);
XtSetArg(args[1],XtNheight,&height);
XtGetValues(drawing_area,args,2);
 
XSIZE=(long)width*10L;
YSIZE=(long)height*10L;
 
xrat=(float)XSIZE/(float)12800;
yrat=(float)YSIZE/(float)9600;
 
if(xrat < yrat)
             mult=xrat;
 
else
             mult=yrat;
 
dmult=display_set[display_flag].dmult[h];
xmin= display_set[display_flag].xmin[h];
xmax= display_set[display_flag].xmax[h];
ymin= display_set[display_flag].ymin[h];
ymax= display_set[display_flag].ymax[h];
xcen= display_set[display_flag].xcen[h];
ycen= display_set[display_flag].ycen[h];
 
for(mapno=0;mapno < 100;mapno++) {
 
if(smaplayer[mapno]==NULL)
                  break;
 
if(off[mapno] ==-1)
                  continue;
                   
maplayer=smaplayer[mapno];  /*beginning of map buffer #mapno */
 
ind=0;
 
lint1=(long)npoint[0]*(long)MY;
lint2=(long)npoint[1]*(long)MY;
 
cmult=mult*dmult;
 
while( maplayer!=NULL) {
 
               if(maplayer->type==0 || maplayer->type==1) {
 
               color=cmap[maplayer->color];
               izoom=maplayer->zoom;
               no=maplayer->number;
 
               if(izoom > zoom) {
 
                                maplayer=maplayer->nextseg;
 
                                if(maplayer==NULL)
                                              break;
 
                                continue;
 
                           }     
  
              if(zoom==1 && izoom==1) {
                           
                    for(i=0;i<no;i++) {
 
                    point[i].x=(xmin+(float)maplayer->points[i].x * cmult)/MY;
                    point[i].y=(ymin+(float)maplayer->points[i].y * cmult)/MY;
 
                          }
 
                    XSetForeground(display,gc,color);
                    if(maplayer->type==0)
                    XDrawLines(display,pix,gc,point,no,CoordModeOrigin);
 
                    else 
                    XFillPolygon(display,pix,gc,point,no,Complex,CoordModeOrigin);
 
                              }                   
                  else     {
 
              /* recalc all vectors */
 
                        for(i=0;i<no;i++) {
 
                     point[i].x=(((xmin+(float)maplayer->points[i].x*cmult)-
                                   lint1)*zoom+xcen)/MY;
                     point[i].y=(((ymin+(float)maplayer->points[i].y*cmult)-
                                   lint2)*zoom+ycen)/MY;
 
                                    }            
 
                        XSetForeground(display,gc,color); 
                        if(maplayer->type==0)
                        XDrawLines(display,pix,gc,point,no,CoordModeOrigin);
                        else 
                        XFillPolygon(display,pix,gc,point,no,Complex,CoordModeOrigin);
                   
                              }
  
              maplayer=maplayer->nextseg;
 
              if(maplayer==NULL)
                             break;
 
              
 
         }
 
   /* ascii symbol and/or text string */
 
         else { 
 
              xadd=maplayer->xmax;
              yadd=maplayer->ymax;
 
              color=cmap[maplayer->color];
              izoom=maplayer->zoom;
             
              if(izoom > zoom) {
 
                                maplayer=maplayer->nextseg;
 
                                if(maplayer==NULL)
                                              break;
 
                                continue;
 
                  }
 
              if(zoom==1 && izoom==1) {
 
                    x1=(xmin+(float)maplayer->points[0].x * cmult)/MY;
                    y1=(ymin+(float)maplayer->points[0].y * cmult)/MY;
 
                                }
 
         else  {
               
                x1=(((xmin+(float)maplayer->points[0].x*cmult)-
                      lint1)*zoom+xcen)/MY;
                y1=(((ymin+(float)maplayer->points[0].y*cmult)-
                      lint2)*zoom+ycen)/MY;
 
                          }
 
         XSetForeground(display,gc,color);
 
         if(maplayer->number==0) {
 
         if(strlen(maplayer->name) > 0) {
 
         XDrawLine(display,pix,gc,x1+1,y1+1,x1+1,y1-1);
         XDrawLine(display,pix,gc,x1+1,y1-1,x1-1,y1-1);
         XDrawLine(display,pix,gc,x1-1,y1-1,x1-1,y1+1);
         XDrawLine(display,pix,gc,x1-1,y1+1,x1+1,y1-1);
 
       }
 
         else {
         
         
         offset=4;
         XDrawLine(display,pix,gc,x1,y1-offset,x1-offset,y1+offset);
         XDrawLine(display,pix,gc,x1,y1-offset,x1+offset,y1+offset);
         XDrawLine(display,pix,gc,x1-offset,y1+offset,x1+offset,y1+offset);
         
         
         
              }
         
 
      }
 
         length=strlen(maplayer->name);
         text_width=XTextWidth(info_font[0],maplayer->name,length);
 
         if(maplayer->number==1) {
 
                             xc=x1-text_width/2;
                             yc=y1+yheight;
 
               }
 
         else             {
                      
                if(xadd < 0) 
                         xc=x1 - text_width;
                        
                else
                         xc=x1+3;
   
 
                yc=y1+yadd;
 
          }
 
         XDrawString(display,pix,gc,xc,yc,maplayer->name,length);
 
         maplayer=maplayer->nextseg;
 
             if(maplayer==NULL)
                             break;
 
                         }
 
 
}
 
}
 
return;
}