blender布阵 - 技术栈

1、设计阵形

python 复制代码

    # %% 圆环阵
 
        r_cir = 0.25  # 半径/m
        angles = 2 * np.pi / N * np.arange(N)
        ele_x = r_cir * np.cos(angles)
        ele_y = r_cir * np.sin(angles)
        Data3 = np.column_stack((ele_x, ele_y, np.full(N, z_distance)))

2、打开blender绘制阵形

python 复制代码

# 打开Blender文件
    bpy.ops.wm.open_mainfile(filepath=blend_file_path)

3、创建发射器

python 复制代码

   ##创建发射器################################
    # 示例：设置水平和垂直视角
    horizontal_angle = 2*sm1  # 水平视角，单位为度
    vertical_angle = 2*sm2  # 垂直视角，单位为度

    # 计算焦距和传感器尺寸
    focal_length, sensor_width, sensor_height = calculate_focal_length_and_sensor_size(horizontal_angle, vertical_angle)


   # 1. 创建发射器（相机）
    emitter_collection = create_collection("Emitter")
    bpy.ops.object.camera_add(location=(0, 0, 0))  # 起点位于原点
    emitter = bpy.context.object
    emitter.name = "Emitter"

    # 隐藏相机的边框和相机图标
    emitter.hide_set(True)  # 在视图中隐藏对象
    emitter.hide_render = True  # 在渲染中隐藏对象
    emitter.hide_viewport = True  # 在视口中隐藏对象


    # 设置相机不参与渲染和碰撞检测
    emitter.cycles.is_visible_camera = False
    emitter.cycles.is_visible_diffuse = False
    emitter.cycles.is_visible_glossy = False
    emitter.cycles.is_visible_transmission = False
    emitter.cycles.is_visible_volume_scatter = False

    # 设置相机的焦距和传感器尺寸
    emitter.data.lens = focal_length
    emitter.data.sensor_width = sensor_width
    emitter.data.sensor_height = sensor_height

    print(f"焦距: {focal_length} mm")
    print(f"传感器宽度: {sensor_width} mm")
    print(f"传感器高度: {sensor_height} mm")

    # 计算宽高比
    aspect_ratio = sensor_width / sensor_height

    # # 设置相机的宽高比
    # bpy.context.scene.render.resolution_x = 1920  # 假设水平分辨率
    # bpy.context.scene.render.resolution_y = int(1920 / aspect_ratio)  # 根据宽高比计算垂直分辨率

   # 计算在指定距离处的边框宽度和高度
    distance = -r_scan
    frame_width = distance * math.tan(horizontal_angle / 2)
    frame_height = distance * math.tan(vertical_angle / 2)


# 计算四个角点的局部坐标
    half_width = frame_width / 2
    half_height = frame_height / 2
    corners_local = [
        (-half_width, -half_height, distance),
        (half_width, -half_height, distance),
        (half_width, half_height, distance),
        (-half_width, half_height, distance)
    ]

    # 将局部坐标转换为世界坐标
    corners_world = []
    for corner in corners_local:
        world_corner = emitter.matrix_world @ Vector(corner)
        corners_world.append(world_corner)


    # 创建四条线连接相机起点和边框角点
    camera_location = emitter.location

    
    for i, corner in enumerate(corners_world):
        line_name = f"Line_{i}"
        create_line(camera_location, corner, line_name)

    # 假设 corners_world 是存储角点的列表
    num_corners = len(corners_world)
    for i in range(num_corners):
        start = corners_world[i]
        end = corners_world[(i + 1) % num_corners]
        line_name = f"Border_Line_{i}"
        create_line(start, end, line_name)

4、创建接收器：

python 复制代码

#######创建接收器#######################################
    receiver_collection = create_collection("Receivers")
    receiver_material = bpy.data.materials.new(name="Receiver_Blue")
    receiver_material.diffuse_color = (1, 0, 0, 1)
    
 
    num_receivers = N
    receiver_z = 0  # 接收器平面高度

    receivers = []
    for i in range(num_receivers):
        angle = 2 * math.pi * i / num_receivers

        receiver_x = Data3[i, 0]
        receiver_y = Data3[i, 1]
        receiver_z = z_distance

 
        # 创建接收器（位置抬高到Z=0.25）
        bpy.ops.mesh.primitive_cube_add(size=0.01, location=(receiver_x, receiver_y, receiver_z))
        receiver = bpy.context.object
        receiver.name = f"Receiver_{i}"
        receiver.data.materials.append(receiver_material)

        # 添加自定义属性
        receiver["is_receiver"] = True
        receiver["angle_deg"] = math.degrees(angle)

        receiver_collection.objects.link(receiver)

    # 对齐相机到接收器平面
    align_camera_to_plane(emitter, receiver_z=receiver_z)

    # 验证参数
    print(f"相机位置: {emitter.location}")
    print(f"相机旋转: {np.degrees(emitter.rotation_euler)} 度")
    print(f"镜头焦距: {emitter.data.lens:.2f} mm")

5、保存blender:

python 复制代码

    bpy.ops.wm.save_mainfile(filepath=blend_file_path)

6、函数返回发射器、接收器的位置