///<summary>根据planeviewbox和planecameraheight自动调整相机位置</summary>
void planeAdjustCamera()
{
//计算相机位置
System.Windows.Point pnt = new System.Windows.Point(planeViewBox.Width / 2, planeViewBox.Height / 2);
System.Windows.Point geopnt = geohelper.planeToGeo(pnt.ToString());
VECTOR3D vc = MapHelper.JWHToPoint(geopnt.Y, geopnt.X, Para.LineHeight, earthpara);
float tmp = 1.0f + planeCameraHeight / Para.Radius;
earth.camera = new Camera(new Vector3(vc.x, vc.y, vc.z) * tmp, new Vector3(0, 0, 0), Vector3.Up, earth);
}
/// <summary>
/// 自动调整相机距离以显示指定范围
/// </summary>
public void adjustCameraRange(System.Windows.Rect rect)
{
double minjd, maxjd, minwd, maxwd;
minwd = rect.Left; maxwd = rect.Right; minjd = rect.Top; maxjd = rect.Bottom;
List <VECTOR3D> corners = new List <VECTOR3D>();
VECTOR3D lefttop, righttop, leftbottom, rightbottom, center;
System.Windows.Media.Media3D.Vector3D lt, rt, lb, rb;
lefttop = MapHelper.JWHToPoint(minjd, maxwd, 0, earth.earthManager.earthpara); corners.Add(lefttop); lt = Helpler.vecD3DToWpf(lefttop);
righttop = MapHelper.JWHToPoint(maxjd, maxwd, 0, earth.earthManager.earthpara); corners.Add(righttop); rt = Helpler.vecD3DToWpf(righttop);
leftbottom = MapHelper.JWHToPoint(minjd, minwd, 0, earth.earthManager.earthpara); corners.Add(leftbottom); lb = Helpler.vecD3DToWpf(leftbottom);
rightbottom = MapHelper.JWHToPoint(maxjd, minwd, 0, earth.earthManager.earthpara); corners.Add(rightbottom); rb = Helpler.vecD3DToWpf(rightbottom);
System.Windows.Media.Media3D.Vector3D cent = new System.Windows.Media.Media3D.Vector3D((corners.Max(p => p.x) + corners.Min(p => p.x)) / 2, (corners.Max(p => p.y) + corners.Min(p => p.y)) / 2, (corners.Max(p => p.z) + corners.Min(p => p.z)) / 2);
if (earth.earthManager.earthpara.SceneMode == ESceneMode.地球)
{
cent = cent * Para.Radius / cent.Length;
center = new VECTOR3D(cent.X, cent.Y, cent.Z);
}
else //zh注：还未验证
{
center = new VECTOR3D(cent.X, cent.Y, 0);
}
double width, height;
width = Math.Max((rt - lt).Length, (rb - lb).Length) * 1.5;
height = Math.Max((lb - lt).Length, (rb - rt).Length) * 1.5;
double distance;
if (width / height > earth.global.ScreenWidth / earth.global.ScreenHeight) //以宽度来计算
{
distance = width * earth.global.ScreenHeight / earth.global.ScreenWidth / 2 / Math.Atan(FieldOfView / 2);
}
else //以高度来计算
{
distance = height / 2 / Math.Atan(FieldOfView / 2);
}
aniLook(center);
adjustCameraDistance((float)distance);
}
///<summary>获取指定经纬高的点在三维场景中的坐标</summary>
public VECTOR3D getScene3DCoordinate(double jd, double wd, double hd)
{
return(MapHelper.JWHToPoint(jd, wd, hd, earth.earthManager.earthpara));
}
