zellipse.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 80 行

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*
*                            Open Watcom Project
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* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
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#include "gdefn.h"


short _WCI86FAR _CGRAPH _ellipse_w( short fill, double x1, double y1,
/*==========================*/ double x2, double y2 )

/* This function draws and fills an ellipse defined by the rectangle
   whose opposite corners are ( x1, y1 ) and ( x2, y2 ) in window
   coordinates. */

{
    short           success;

    if( _GrProlog() ) {
        success = _L2ellipse( fill, _WtoPhysX( x1 ), _WtoPhysY( y1 ),
                                _WtoPhysX( x2 ), _WtoPhysY( y2 ) );
        _GrEpilog();
    } else {
        success = 0;
    }
    return( success );
}

Entry( _ELLIPSE_W, _ellipse_w ) // alternate entry-point


short _WCI86FAR _CGRAPH _ellipse_wxy( short fill, struct _wxycoord _WCI86FAR * p1,
/*============================*/ struct _wxycoord _WCI86FAR * p2 )

/* This function draws and fills an ellipse defined by the rectangle
   whose opposite corners are "p1" and "p2" in window coordinates.  */

{
    return( _ellipse_w( fill, p1->wx, p1->wy, p2->wx, p2->wy ) );
}

Entry( _ELLIPSE_WXY, _ellipse_wxy ) // alternate entry-point


short _WCI86FAR _CGRAPH _ellipse_w_87( short fill, double x1, double y1,
/*=========================================*/ double x2, double y2 )

{
    return( _ellipse_w( fill, x1, y1, x2, y2 ) );
}

Entry( _ELLIPSE_W_87, _ellipse_w_87 ) // alternate entry-point