move_view_lib.py 文件源码

def get_sph_cor(x,y,z):    #using radian
    lon=0
    if(x==0 and y>0):
        lon=PI/2
    elif(x==0 and y<0):
        lon=3*PI/2
    elif(x==0 and y==0):
        print ("error")
        return
    elif(x>0 and y==0):
        lon=0
    elif(x>0 and y>0):
        lon=math.atan(float(y)/float(x))
    elif(x>0 and y<0):
        lon=2*PI+math.atan(float(y)/float(x))
    elif(x<0 and y==0):
        lon=PI
    elif(x<0 and y>0):
        lon=PI+math.atan(float(y)/float(x))
    elif(x<0 and y<0):
        lon=PI+math.atan(float(y)/float(x))

    lat=PI/2-math.acos(z/1.0)

    return lon,lat