////////////////////////////////////////////////////////////////////////////////////
public ExtrusionMesh(Sec sec, Color color, bool att_color)
{
this.sec = sec;
this.color = color;
this.att_color = att_color;
//计算所有的顶点集合及面索引
GenerateAllVertexsAndFacets();
}
////////////////////////////////////////////////////////////////////////////////////
void ResetAll(string fn)
{
////////////////////////////////////////////////////////////////////////////////////
//所有关键变量的清空和初始化
EnableColoring = true;
EnableLights = false;
DisplayWireFrame = true;
DisplayHorizonalMesh = true;
DisplayVerticalMesh = true;
DisplayInfoHUD = true;
//挤压Mesh的球面中心点
center = new Vector3();
//当前选中的多边形编号及其质心
curr_district = 0;
curr_centroid = new Vector3();
//world中的平移矢量
world_translation = new Vector3(); //其值要么等于center，要么等于当前选择的面质心坐标
//World等比放大系数，暂时不用
scaling = 1F;
//Direct3D相关
device = null;
device_lost = false;
present_params = null;
batch = 0;
//Direct3D资源相关
font_selected = font_hud = null;
d3dfont_selected = d3dfont_hud = null;
bmp_hud = null;
bkground_hud = null;
sprite = null;
//显示信息相关
filename = message = null;
//窗口状态相关
onpaint_enabled = true;
////////////////////////////////////////////////////////////////////////////////////
//生成原始数据和所有点、面和线框
sec = new Sec(fn);
ms = new ExtrusionMesh(sec, Color.White, EnableColoring);
ws = new WallMesh(sec, Color.Gainsboro);
pl = new PartitionLines(ms.polys, Color.Red);
wpl = new WallPartitionLines(sec, Color.Blue);
//对sl采取的管理策略是不同的，其VertexBuffer和其自身将被同时创建或删除
//这里无需初始化，InitializeGraphics中自然会初始化
sl = null;
//初始化当前选中的多边形的质心
curr_centroid = ms.polys[curr_district].GetCentroid();
//设置标题栏
FileInfo fi = new FileInfo(fn);
filename = fn; // fi.Name.ToLower();
Text = "3D .Sec Viewer - " + filename;
//初始化信息字符串
GenerateMessageString();
}