//Arrow3多边形引擎 
//多边形结构，用于绘制矢量图形 
struct poly{
	vector<ege_point> ps;
	color_t fcolor;
	float weight;//绘制缩放权值 
};
vector<poly> polys;//多边形列表 

//旋转多边形 
inline poly rotatePoly(poly p,float r){
	VECTOR3D vec3d;
	for(ege_point& ep:p.ps){
		vec3d.x=ep.x;
		vec3d.y=ep.y;
		rotate_point3d_z(&vec3d,r);
		ep.x=vec3d.x;
		ep.y=vec3d.y;
	}
	return p;
}

//绘制多边形
inline void drawPolys(int alpha=200){
	ege_point* ep;
	int n;
	for(poly pt:polys){
		n=pt.ps.size();
		ep=new ege_point[n+1];
		setfillcolor(EGECOLORA(pt.fcolor,alpha));
		pt=rotatePoly(pt,pR);
		ege_fillpoly(n,ep);
		delete [] ep;
	}
}