int main(int argc,char *argv[]) {
struct PostScript *ps=NULL;
struct PostScriptClip *clip=NULL;
float wdt=400,hgt=400;
float xoff=50,yoff=50;
unsigned int fgcol=0xff000000;
float x[4]={0,200,400,200};
float y[4]={200,0,200,400};
int t[4]={0,0,0,0};
ps=PostScriptMake();
PostScriptSetText(ps,stream,stdout);
PostScriptMakePlot(ps,xoff,yoff,wdt,hgt,0);
clip=PostScriptMakeClip(50,50,wdt,hgt,4,x,y,t);
PostScriptRectangle(ps,NULL,10,10,wdt-20,hgt-20,
1,fgcol,0,NULL,clip);
PostScriptFreeClip(clip);
PostScriptEndPlot(ps);
return 0;
}
int SplotClip(struct Splot *ptr,
int num,float *px,float *py,int *t) {
int s=0;
if (ptr==NULL) return -1;
if (ptr->ps.ptr !=NULL) {
struct PostScript *ps;
ps=ptr->ps.ptr;
if (ptr->ps.clip !=NULL) PostScriptFreeClip(ptr->ps.clip);
ptr->ps.clip=NULL;
if (num==0) return 0;
ptr->ps.clip=PostScriptMakeClip(ps->x,ps->y,ps->wdt,ps->hgt,num,px,py,t);
if (ptr->ps.clip==NULL) s=-1;
}
if (ptr->fb.ptr !=NULL) {
int *ix=NULL,*iy=NULL;
int i;
struct FrameBuffer *img;
img=*(ptr->fb.ptr);
if (img==NULL) return -1;
if (ptr->fb.clip !=NULL) FrameBufferFreeClip(ptr->fb.clip);
ptr->fb.clip=NULL;
if (num==0) return 0;
ix=malloc(sizeof(int)*num);
if (ix==NULL) return -1;
iy=malloc(sizeof(int)*num);
if (iy==NULL) {
free(ix);
return -1;
}
for (i=0;i<num;i++) {
ix[i]=px[i];
iy[i]=py[i];
}
ptr->fb.clip=FrameBufferMakeClip(img->wdt,img->hgt,num,ix,iy,t);
if (ptr->fb.clip==NULL) s=-1;
free(ix);
free(iy);
}
return s;
}
