我正在试图弄清楚如何相对于当前位置旋转框架对象。
e.g。一个物体指向北方,我说围绕y轴旋转180度。然后我说:倾斜90度,它从“世界”的角度倾斜。所以它指向下而不是op。 (对不起,这个令人困惑的故事,如果你尝试下面的代码并使用你的上下左右键,你会明白我的意思)。
非常感谢任何帮助。
import time
import numpy
from visual import *
# initialize variables
pitch_degrees = 0
roll_degrees = 0
yaw_degrees = 0
xangle = 0.0
yangle = 0.0
zangle = 0.0
# create the airplane frame. this will be our working object.
airplane = frame(make_trail=True)
# below are the elements that create the airplane
body = cone(frame=airplane, pos=(50,0,0), axis=(-150,0,0), radius=10)
body2 = cone(frame=airplane, pos=(50,0,0), axis=(50,0,0), radius=10)
wing = box(frame=airplane, pos=(35,0,0), size=(30,3,180))
tail = box(frame=airplane, pos=(-75,0,0), size=(20,3,50))
aileron = box(frame=airplane, pos=(-75,12,0), size=(20,24,3))
cabin = ellipsoid(frame=airplane, pos=(30,5,0), axis=(1,0,0),size=(45,24,12))
#painting
for obj in airplane.objects:
obj.color = color.red
body.color = color.white
cabin.color = (0.5, 0.5, 0.5)
cabin.opacity = 0.8
# I'm experiencing some jitter in my screen when starting up (yay ati....)
time.sleep(2)
# loop forever
while True:
# are there any keys pressed? if so, act on them.
if scene.kb.keys: # event waiting to be processed?
s = scene.kb.getkey() # get keyboard info
if (s == 'up'):
pitch_degrees = pitch_degrees - 1
if (s == 'down'):
pitch_degrees = pitch_degrees + 1
if (s == 'left'):
roll_degrees = roll_degrees - 1
if (s == 'right'):
roll_degrees = roll_degrees + 1
# convert degrees to radians
zangle = numpy.radians(pitch_degrees)
xangle = numpy.radians(roll_degrees)
# execute the actual rotation.
# but this should be relative to its current rotation :(
airplane.rotate(angle=zangle,axis=(0,0,1))
airplane.rotate(angle=xangle,axis=(1,0,0))
# some delay because i'm a dirty boy
time.sleep(0.005)
答案 0 :(得分:0)
创建一个飞机而不是框架的自定义类。通过这种方式,您可以获得飞机类的方法,该方法可以相对于飞机的位置和方向旋转类中的每个项目(机翼,尾翼等)。因此,类将包含一个向量,它的位置以及它的方向向量。然后使用旋转数学来分别围绕飞机的方向向量旋转每个项目。
很抱歉,我会在评论中发帖,但我没有足够的声誉:)