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#include <Xw_Extension.h>
/* ifdef then trace on */
#ifdef TRACE
#define TRACE_DRAW_POLYARC
#endif
/*
STATUS Xw_draw_polyarc (awindow,xc,yc,xradius,yradius,start,angle):
XW_EXT_WINDOW *awindow
float xc,yc Arc center defined in User Space
float xradius Horizontal arc radius defined in User Space
float xradius Vertical Arc radius defined in User Space
float start Start angle defined in RADIAN
float angle Arc angle defined in RADIAN
Display arc in current QG set by set_poly_attrib .
or retain arcs in buffer.
returns ERROR if bad parameter
returns SUCCESS if successfull
*/
#define MAXCOORD 32767
#define MINCOORD -32768
static int BeginArcs = False;
static XW_EXT_ARC *parclist ;
#ifdef XW_PROTOTYPE
XW_STATUS Xw_draw_polyarc (void* awindow,float xc,float yc,
float xradius,float yradius,float start,float angle)
#else
XW_STATUS Xw_draw_polyarc (awindow,xc,yc,xradius,yradius,start,angle)
void *awindow;
float xc,yc,xradius,yradius,start,angle ;
#endif /*XW_PROTOTYPE*/
{
XW_EXT_WINDOW *pwindow = (XW_EXT_WINDOW*) awindow ;
XW_EXT_BUFFER *pbuffer ;
int narc,bindex,angle1,angle2,x,y,width,height ;
if( !Xw_isdefine_window(pwindow) ) {
/*ERROR*Bad EXT_WINDOW Address*/
Xw_set_error(24,"Xw_draw_polyarc",pwindow) ;
return (XW_ERROR) ;
}
if( xradius <= 0. ) {
/*ERROR*Bad arc radius*/
Xw_set_error(115,"Xw_draw_polyarc",&xradius) ;
return (XW_ERROR) ;
}
if( yradius <= 0. ) {
/*ERROR*Bad arc radius*/
Xw_set_error(115,"Xw_draw_polyarc",&yradius) ;
return (XW_ERROR) ;
}
bindex = _BINDEX ;
pbuffer = &_BUFFER(bindex) ;
for( parclist = pbuffer->pparclist ; parclist ;
parclist = (XW_EXT_ARC*) parclist->link ) {
if( parclist->narc < MAXARCS ) break ;
}
if( !parclist ) {
parclist = Xw_add_polyarc_structure(pbuffer) ;
}
if( !parclist ) return XW_ERROR ;
angle1 = (int )( start*64./DRAD );
if( angle1 > 0 ) {
while( angle1 > MAXANGLE ) angle1 -= MAXANGLE ;
} else if( angle1 < 0 ) {
while( angle1 < -MAXANGLE ) angle1 += MAXANGLE ;
}
angle2 = (int )( angle*64./DRAD );
if( angle2 > 0 ) {
while( angle2 > MAXANGLE ) angle2 -= MAXANGLE ;
} else if( angle2 < 0 ) {
while( angle2 < -MAXANGLE ) angle2 += MAXANGLE ;
}
//OCC186
width = 2*PVALUE(xradius, pwindow->xratio, pwindow->yratio) ;
height = 2*PVALUE(yradius, pwindow->xratio, pwindow->yratio) ;
x = PXPOINT(xc, pwindow->xratio) ;
y = PYPOINT(yc, pwindow->attributes.height, pwindow->yratio) ;
//OCC186
x = max(min(x,MAXCOORD),MINCOORD);
y = max(min(y,MAXCOORD),MINCOORD);
if( width < 0xFFFF && height < 0xFFFF ) {
narc = parclist->narc ;
parclist->rarcs[narc].width = width ;
parclist->rarcs[narc].height = height ;
parclist->rarcs[narc].x = x - width/2 ;
parclist->rarcs[narc].y = y - height/2 ;
parclist->rarcs[narc].angle1 = angle1 ;
parclist->rarcs[narc].angle2 = angle2 ;
parclist->narc++ ;
if( bindex > 0 ) {
pbuffer->isempty = False ;
width = (width+1)/2 ;
height = (height+1)/2 ;
pbuffer->rxmin = min(pbuffer->rxmin,x-width) ;
pbuffer->rymin = min(pbuffer->rymin,y-height) ;
pbuffer->rxmax = max(pbuffer->rxmax,x+width) ;
pbuffer->rymax = max(pbuffer->rymax,y+height) ;
} else if( !BeginArcs ) {
int polyindex = pwindow->polyindex ;
int lineindex = pwindow->lineindex ;
GC gcpoly = pwindow->qgpoly[polyindex].gc ;
GC gcline = (QGTYPE(pwindow->qgpoly[polyindex].code)) ?
pwindow->qgline[lineindex].gc : NULL ;
Xw_draw_pixel_polyarcs(pwindow,parclist,gcpoly,gcline);
parclist->narc = 0 ;
}
} else {
/*ERROR*Too big arc radius*/
Xw_set_error(116,"Xw_draw_polyarc",0) ;
return (XW_ERROR) ;
}
#ifdef TRACE_DRAW_POLYARC
if( Xw_get_trace() > 2 ) {
printf(" Xw_draw_polyarc(%lx,%f,%f,%f,%f,%f,%f\n",
(long ) pwindow,xc,yc,xradius,yradius,start,angle);
}
#endif
return (XW_SUCCESS);
}
/*
STATUS Xw_begin_polyarcs (awindow,narc):
XW_EXT_WINDOW *awindow
int narc Not used
Begin a set of arcs which must be filled by Xw_draw_polyarc and
closed by Xw_close_polyarcs
returns ERROR if bad extended window address
returns SUCCESS if successful
*/
#ifdef XW_PROTOTYPE
XW_STATUS Xw_begin_polyarcs(void* awindow,int narc)
#else
XW_STATUS Xw_begin_polyarcs(awindow,narc)
void *awindow ;
int narc ;
#endif /*XW_PROTOTYPE*/
{
XW_EXT_WINDOW *pwindow = (XW_EXT_WINDOW*)awindow ;
if( !Xw_isdefine_window(pwindow) ) {
/*ERROR*Bad EXT_WINDOW Address*/
Xw_set_error(24,"Xw_begin_polyarcs",pwindow) ;
return (XW_ERROR) ;
}
if( BeginArcs ) Xw_close_polyarcs(pwindow);
BeginArcs = True;
#ifdef TRACE_DRAW_POLYARC
if( Xw_get_trace() > 2 ) {
printf(" Xw_begin_polyarcs(%lx,%d)\n",(long ) pwindow,narc) ;
}
#endif
return (XW_SUCCESS) ;
}
/*
STATUS Xw_close_polyarcs (awindow):
XW_EXT_WINDOW *awindow
Close the set of arcs
returns ERROR if bad extended window address
returns SUCCESS successful
*/
#ifdef XW_PROTOTYPE
XW_STATUS Xw_close_polyarcs(void* awindow)
#else
XW_STATUS Xw_close_polyarcs(awindow)
void *awindow ;
#endif /*XW_PROTOTYPE*/
{
XW_EXT_WINDOW *pwindow = (XW_EXT_WINDOW*)awindow ;
int bindex ;
if( !Xw_isdefine_window(pwindow) ) {
/*ERROR*Bad EXT_WINDOW Address*/
Xw_set_error(24,"Xw_close_polyarcs",pwindow) ;
return (XW_ERROR) ;
}
bindex = _BINDEX ;
if( BeginArcs && !bindex ) {
int polyindex = pwindow->polyindex ;
int lineindex = pwindow->lineindex ;
GC gcpoly = pwindow->qgpoly[polyindex].gc ;
GC gcline = (QGTYPE(pwindow->qgpoly[polyindex].code)) ?
pwindow->qgline[lineindex].gc : NULL ;
for( parclist = _BUFFER(bindex).pparclist ; parclist ;
parclist = (XW_EXT_ARC*) parclist->link ) {
if( parclist->narc > 0 ) {
Xw_draw_pixel_polyarcs(pwindow,parclist,gcpoly,gcline);
parclist->narc = 0 ;
} else break ;
}
}
BeginArcs = False;
#ifdef TRACE_DRAW_POLYARC
if( Xw_get_trace() > 2 ) {
printf(" Xw_close_polyarcs(%lx)\n",(long ) pwindow) ;
}
#endif
return (XW_SUCCESS) ;
}
#ifdef XW_PROTOTYPE
void Xw_draw_pixel_polyarcs (XW_EXT_WINDOW* pwindow,XW_EXT_ARC* parclist,
GC gcpoly,GC gcline)
#else
void Xw_draw_pixel_polyarcs (pwindow,parclist,gcpoly,gcline)
XW_EXT_WINDOW *pwindow;
XW_EXT_ARC *parclist;
GC gcpoly,gcline;
#endif /*XW_PROTOTYPE*/
{
if( parclist->isupdated ) {
XFillArcs(_DISPLAY,_DRAWABLE,gcpoly,parclist->uarcs,parclist->narc) ;
if( gcline && (gcpoly != gcline) ) {
XDrawArcs(_DISPLAY,_DRAWABLE,gcline,parclist->uarcs,parclist->narc) ;
}
} else {
XFillArcs(_DISPLAY,_DRAWABLE,gcpoly,parclist->rarcs,parclist->narc) ;
if( gcline && (gcpoly != gcline) ) {
XDrawArcs(_DISPLAY,_DRAWABLE,gcline,parclist->rarcs,parclist->narc) ;
}
}
}
#ifdef XW_PROTOTYPE
XW_EXT_ARC* Xw_add_polyarc_structure(XW_EXT_BUFFER* pbuflist )
#else
XW_EXT_ARC* Xw_add_polyarc_structure(pbuflist )
XW_EXT_BUFFER *pbuflist ;
#endif /*XW_PROTOTYPE*/
/*
Create and Insert at end one Extended arc structure in the
arc List
returns Extended arc address if successful
or NULL if Bad Allocation
*/
{
XW_EXT_ARC *parc ;
parc = (XW_EXT_ARC*) Xw_malloc(sizeof(XW_EXT_ARC)) ;
if( parc ) {
parc->link = pbuflist->pparclist ;
parc->isupdated = 0 ;
parc->narc = 0 ;
pbuflist->pparclist = parc ;
} else {
/*ERROR*EXT_ARC Allocation failed*/
Xw_set_error(35,"Xw_add_polyarc_structure",NULL) ;
}
return (parc) ;
}
#ifdef XW_PROTOTYPE
XW_STATUS Xw_del_polyarc_structure(XW_EXT_BUFFER* pbuflist)
#else
XW_STATUS Xw_del_polyarc_structure(pbuflist)
XW_EXT_BUFFER *pbuflist ;
#endif /*XW_PROTOTYPE*/
/*
Remove ALL Extended arc structure in the
arc List
SUCCESS always
*/
{
XW_EXT_ARC *parc,*qarc ;
for( parc = pbuflist->pparclist ; parc ; parc = qarc ) {
qarc = (XW_EXT_ARC*)parc->link ;
Xw_free(parc) ;
}
pbuflist->pparclist = NULL ;
return (XW_SUCCESS) ;
}
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