math_operation.py 文件源码

def getCoordinateFromDistance(height, focal, altitude, theta, distance):
    # height    : jumlah baris (piksel)
    # focal     : panjang focal length kamera (piksel)
    # altitude  : ketinggian kamera
    # theta     : kemiringan kamera
    # distance  : jarak yang ingin diketahui lokasinya

    distance = float(distance)
    altitude = float(altitude)
    focal = float(focal)

    alpha = math.degrees(math.atan(distance / altitude))
    delta = theta - alpha
    yCoordinate = focal * math.tan(math.radians(delta))
    yCoordinate += (height / 2)

    # print "alpha: {0} | delta: {1}".format(alpha, delta)
    return yCoordinate