blender-bpy程序化控制物体脉冲变大动画测试（代码移植自sizebox），不建议用于渲染动画，效果不是连续变大的spurt growth

import bpy
import time# ===== 可调参数 =====
GROW_DURATION = 1.0      # 生长阶段持续时间（秒）
GROW_SPEED = 0.2          # 生长速度因子（每秒钟 scale 乘 (1 + GROW_SPEED)）
IDLE_DURATION = 5.0       # 暂停阶段持续时间（秒）
OBJECT_NAME = "Cube"      # 要控制的物体名称（改为你自己的物体名）
# ===================# 存储物体状态（因为可能有多个物体需要独立控制）
state = {"growing": False,"grow_start": 0.0,"last_scale": 1.0      # 初始缩放值（可根据物体实际缩放修改）
}def spurt_growth_handler(scene):"""每帧调用的更新函数"""obj = bpy.data.objects.get(OBJECT_NAME)if obj is None:return  # 物体不存在，跳过
current_time = time.time()  # 使用系统时间（与帧率无关）# 初始化状态（第一次运行时）if not hasattr(spurt_growth_handler, "initialized"):state["grow_start"] = current_timestate["growing"] = Truestate["last_scale"] = obj.scale.x  # 假设是均匀缩放spurt_growth_handler.initialized = True# 状态机if state["growing"]:# 生长阶段：指数增长delta = current_time - state["grow_start"]if delta < GROW_DURATION:# 计算新的缩放值factor = 1 + GROW_SPEED * deltanew_scale = state["last_scale"] * factorobj.scale = (new_scale, new_scale, new_scale)else:# 生长结束，进入暂停state["growing"] = Falsestate["grow_start"] = current_time# 记录当前缩放作为下次生长的基准state["last_scale"] = obj.scale.xelse:# 暂停阶段：等待 IDLE_DURATION 后再次生长if current_time >= state["grow_start"] + IDLE_DURATION:state["growing"] = Truestate["grow_start"] = current_time# 重置基准缩放（可选，如果你希望每次从当前大小开始）state["last_scale"] = obj.scale.x# 将处理函数注册到 Blender 的帧更新事件
def register():bpy.app.handlers.frame_change_pre.append(spurt_growth_handler)def unregister():bpy.app.handlers.frame_change_pre.remove(spurt_growth_handler)# 如果直接运行脚本，自动注册
if __name__ == "__main__":register()