如何为多个 objects 的移动和旋转设置动画？

Question

我有一架由多个objects组成的无人机。问题是，当我旋转无人机并将其移动到其他点时，它会失去形状（撕成碎片），无人机的每个部分都与主 body 断开连接。如何在不变形的情况下旋转和移动无人机？

我试着把无人机的 body 变成所有零件的 parent。当我只旋转或移动 body 时它工作。 config

import math
import bpy
import mathutils
import subprocess as sp
from math import sqrt, degrees, acos, pow

sp.call('cls', shell=True)

drone_objects_names = ['Cube.008', 'Cylinder.007', 'Cube.007', 'Cube.006', 'Sphere.005', 'Sphere.004', 'Cylinder.008',
                       'Sphere.003', 'Cylinder.006', 'Cube.005', 'Cube.004', 'Sphere.002', 'Cylinder.005', 'Sphere.001',
                       'Cylinder.004', 'Sphere', 'Cylinder.003', 'Cube.003', 'Cylinder.002', 'Cylinder.001', 'Cube.002',
                       'Cube.001', 'Cylinder', 'Cube']

X = 10
Y = 10
Z = 5

frame_num = 0
teta = 0

factor = 0.97


def set_keyframe():
    for object_name in drone_objects_names:
        bpy.data.objects[object_name].keyframe_insert(data_path="location", index=-1)


def send_drone_to_center():
    move_drone(-bpy.data.objects['Cylinder.003'].location)


def select_drone():
    for object_name in drone_objects_names:
        bpy.data.objects[object_name].select_set(True)


def move_drone(v):
    bpy.ops.transform.translate(value=v)


def angle_between_z(vc, uc):
    nominator = vc[0] * uc[0] + vc[2] * uc[2]
    denominator = sqrt(pow(vc[0], 2) + pow(vc[2], 2)) * sqrt(pow(uc[0], 2) + pow(uc[2], 2))
    return acos(nominator / denominator)


def angle_between_y(vc, uc):
    nominator = vc[0] * uc[0] + vc[2] * uc[2]
    denominator = sqrt(pow(vc[0], 2) + pow(vc[2], 2)) * sqrt(pow(uc[0], 2) + pow(uc[2], 2))
    return acos(nominator / denominator)


def do_step():
    global factor, teta, frame_num, X, Y, Z
    factor = 0.97

    x_new = X * math.cos(math.radians(teta))
    y_new = Y * math.sin(math.radians(teta))

    bpy.context.scene.frame_set(frame_num)

    move_drone(-bpy.data.objects['Cylinder.003'].location)
    move_drone((x_new, y_new, Z * factor))

    angle = angle_between_z((x_new, y_new, Z * factor), (X, Y, Z))
    bpy.data.objects['Cylinder.003'].rotate_euler[2] = angle

    set_keyframe()

    frame_num += 3

    X *= factor
    Y *= factor
    Z *= factor
    teta += 10


select_drone()
send_drone_to_center()
move_drone((X, Y, Z))

while math.sqrt(X * X + Y * Y + Z * Z) > 1:
    do_step()
    e = bpy.data.objects['Cylinder.003'].location
    print(X, Y, e[0], e[2])

bpy.context.scene.frame_end = frame_num

我希望无人机在参考中心的中心不会变形... drone lose it's shape

我在这个项目中使用的无人机（如果你想尝试......）：drone

Answer 1

您的脚本正在对无人机的每个部分应用相同的运动。作为子对象，对象的位置是相对于父对象的，通过更改子对象的位置，它正在远离父对象，而父对象也正在移动。

要么删除父对象，要么只为父对象设置动画。

如何为多个 objects 的移动和旋转设置动画？

How to animate the movement and the rotation of multiple objects?

python

blender