update repo #24

	name: CMake CI (Ubuntu 20.04)

	on:
	push:
	branches: [ "main" ]
	pull_request:
	branches: [ "main" ]

	env:
	BUILD_TYPE: Release

	jobs:
	build:
	runs-on: ubuntu-20.04 # 明确指定 Ubuntu 20.04

	steps:
	- uses: actions/checkout@v4

	- name: Install dependencies
	run: \|
	# 添加 Open3D 官方 PPA
	sudo apt-get install -y software-properties-common
	sudo add-apt-repository ppa:open3d/ppa -y
	sudo apt-get update

	# 安装指定版本 Open3D (0.17+)
	sudo apt-get install -y \
	libopen3d-dev=0.17.0+* \
	cmake \
	g++ \
	libeigen3-dev \
	libpcl-dev \
	libyaml-cpp-dev

	- name: Configure CMake
	run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}

	- name: Build
	run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j 2

	# 可选测试步骤
	- name: Test
	working-directory: ${{github.workspace}}/build
	run: ctest -C ${{env.BUILD_TYPE}}

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