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标题: ucgi多边形扩边函数疑问！ [打印本页]

作者: 张衍波 时间: 2015-9-18 10:48
标题: ucgi多边形扩边函数疑问！

本帖最后由 Me、小丁丁于 2015-8-31 20:24 编辑

GUI_EnlargePolygon函数说好的扩边呢？为什么还减小了？

#define countof( Array ) ( sizeof( Array )/sizeof( Array[0] ) )
const GUI_POINT apoints[]=
{
      {40,20},
      {20,0},
      {0,20},
};
GUI_POINT amagpoint[countof( apoints )];
void sample( void )
{
      int i;
      GUI_SetBkColor( GUI_WHITE );
      GUI_Clear();
      GUI_SetDrawMode( GUI_DM_XOR );

      GUI_FillPolygon( apoints,countof( apoints ),140,110 );
      GUI_EnlargePolygon( amagpoint,apoints,countof( apoints ),5 );
      GUI_FillPolygon( amagpoint,countof( apoints ),140,200 );
}转载

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