Python setlightdirection示例

示例#1

文件： pendulum3.py 项目： sudachen/python-gr

    return


theta = 110.0  # initial angle
gamma = 0.1  # damping coefficient
L = 1  # pendulum length

t = 0
dt = 0.04
state = array([theta * pi / 180, 0])

gr3.init()
gr3.setcameraprojectionparameters(45, 1, 100)
gr3.cameralookat(0, -2, 6, 0, -2, 0, 0, 1, 0)
gr3.setbackgroundcolor(1, 1, 1, 1)
gr3.setlightdirection(1, 1, 10)

now = time.clock()

while t < 30:
    start = now

    t, state = rk4(t, dt, state, damped_pendulum_deriv)
    theta, omega = state
    acceleration = sqrt(2 * g * L * (1 - cos(theta)))
    pendulum(t, theta, omega, acceleration)

    now = time.clock()
    if start + dt > now:
        time.sleep(start + dt - now)

示例#2

文件： pendulum3.py 项目： albertocabello/gr

    gr.updatews()
    return

theta = 110.0  # initial angle
gamma = 0.1    # damping coefficient
L = 1          # pendulum length

t = 0
dt = 0.04
state = array([theta * pi / 180, 0])

gr3.init()
gr3.setcameraprojectionparameters(45, 1, 100)
gr3.cameralookat(0, -2, 6, 0, -2, 0, 0, 1, 0)
gr3.setbackgroundcolor(1, 1, 1, 1)
gr3.setlightdirection(1, 1, 10)
 
now = time.clock()

while t < 30:
    start = now

    t, state = rk4(t, dt, state, damped_pendulum_deriv)
    theta, omega = state
    acceleration = sqrt(2 * g * L * (1 - cos(theta)))
    pendulum(t, theta, omega, acceleration)
    
    now = time.clock()
    if start + dt > now:
        time.sleep(start + dt - now)