///<summary>动画移动相机查看指定位置, 按经纬坐标, timerFactor: 速度系数, 为0则无动画直接刷新</summary>
public void aniLookGeo(double yjd, double xwd, double gd, double speedFactor = 1)
{
Vector3 tmp = Helpler.JWHToPoint(yjd, xwd, gd, earth.earthManager.earthpara);
aniLook(new VECTOR3D(tmp.X, tmp.Y, tmp.Z), speedFactor);
}
/// <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>计算获得指定层和指定纬度序号的块高度</summary>
internal double getTileWidth(int layer, int idxy)
{
System.Windows.Rect rect12 = Helpler.GetTileJW(12, 0, 0);
System.Windows.Rect rect = Helpler.GetTileJW(layer, 0, idxy);
return(rect.Height / rect12.Height);
}
public void setBackground(System.Windows.Media.Color color)
{
background = Helpler.ColorToUInt(color);
}
///<summary>计算局部平面场景模式下的相关参数，设置相关参数后调用</summary>
public void calPlaneModePara()
{
if (tileReadMode == ETileReadMode.内置瓦片服务 || tileReadMode == ETileReadMode.自定义Web瓦片)
{
//计算最合适的对应层，再加2层作为起始层
double minjd = StartLocation.Longitude;
double minwd = StartLocation.Latitude;
double maxjd = EndLocation.Longitude;
double maxwd = EndLocation.Latitude;
double spanjd = maxjd - minjd;
double spanwd = maxwd - minwd;
int ycount; double angle, tileLength, xStart, xEnd, yStart, yEnd;
int si = 0; double cz = double.PositiveInfinity;
for (int i = 0; i < 18; i++)
{
int idxx = 0; int idxy = 0;
ycount = (int)Math.Pow(2, i);
angle = MapHelper.DegToRad(360.0 / ycount);
tileLength = 2.0 * Math.PI / Math.Pow(2, i); //2*pi/power(2,layer) 假定半径为1, 平面地图坐标系下该层划分块的长和宽度
xStart = (idxx * angle - Math.PI) / Math.PI * 180; // 指定索引号块的起始经度
xEnd = ((idxx + 1) * angle - Math.PI) / Math.PI * 180; // 指定索引号块的起始经度
yStart = (Math.Atan(Math.Exp(Math.PI - (idxy + 1) * tileLength)) * 2 - Math.PI / 2) / Math.PI * 180; //指定索引号块的结束纬度
yEnd = (Math.Atan(Math.Exp(Math.PI - idxy * tileLength)) * 2 - Math.PI / 2) / Math.PI * 180; //atan(exp(PI-idxy*2*pi/power(2,layer)))*2-pi/2 指定索引号块的起始纬度
double tmp = Math.Abs(xEnd - xStart - spanjd) + Math.Abs(yStart - yEnd - spanwd);
if (tmp < cz)
{
cz = tmp; si = i;
}
}
StartLayer = si + 2;
//计算合适的瓦片序号
ycount = (int)Math.Pow(2, StartLayer);
angle = MapHelper.DegToRad(360.0 / ycount);
StartIdxX = (int)((minjd / 180 * Math.PI + Math.PI) / angle);
tileLength = 2.0 * Math.PI / Math.Pow(2, StartLayer); //2*pi/power(2,layer) 假定半径为1, 平面地图坐标系下该层划分块的长和宽度
StartIdxY = (int)((Math.PI - Math.Log(Math.Tan((minwd / 180 * Math.PI + Math.PI / 2) / 2))) / tileLength);
EndIdxX = (int)((maxjd / 180 * Math.PI + Math.PI) / angle);
tileLength = 2.0 * Math.PI / Math.Pow(2, StartLayer); //2*pi/power(2,layer) 假定半径为1, 平面地图坐标系下该层划分块的长和宽度
EndIdxY = (int)((Math.PI - Math.Log(Math.Tan((maxwd / 180 * Math.PI + Math.PI / 2) / 2))) / tileLength);
//计算新的准确的起止经纬
System.Windows.Rect tmprect = Helpler.GetTileJW(StartLayer, StartIdxX, StartIdxY);
StartLocation = new GeoPoint(tmprect.Bottom, tmprect.Left);
tmprect = Helpler.GetTileJW(StartLayer, EndIdxX, EndIdxY);
EndLocation = new GeoPoint(tmprect.Top, tmprect.Right);
//以12，0，赤道为基准计算单位转换坐标
System.Windows.Rect rect12 = Helpler.GetTileJW(12, 0, (int)Math.Pow(2, 11));
UnitLongLen = 1 / rect12.Width;
UnitLatLen = 1 / rect12.Height * AdjustAspect;
}
else //自定义瓦片
{
StartLayer = 0;
StartIdxX = 0;
StartIdxY = 0;
EndIdxX = 1;
EndIdxY = 1;
UnitLatLen = 100 / (EndLocation.Latitude - StartLocation.Latitude);
UnitLongLen = 100 / (EndLocation.Longitude - StartLocation.Longitude);
}
}
