OpenSceneGraph编译

程序员文章站 2023-12-25 12:24:21

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初学OSG，第一件事情就是编译，经过几天的折腾，那只五光十色的奶牛终于见面了。一向比较头疼编译这件事情，编译成功前觉得遥不可及，编译成功后觉得易如反掌。既然编过了，做个笔记，备忘。

1. 准备源码和工具

1. OpenSceneGraph-3.6.2
   http://www.openscenegraph.org/index.php/download-section/stable-releases/

2. 3rdParty_VS2017_v141_x64_V11_small.7z
   http://www.openscenegraph.org/index.php/download-section/dependencies/

3. OpenSceneGraph-Data-3.4.0.zip
   http://www.openscenegraph.org/index.php/download-section/data/

2. Visiual Studio 2017 x64
   https://visualstudio.microsoft.com/zh-hans/downloads/

3. cmake-3.12.1-win64-x64.msi
   https://cmake.org/download/

4. qt-opensource-windows-x86-5.9.6.exe
   http://download.qt.io/archive/qt/5.9/5.9.6/

5. qt-vsaddin-msvc2017-2.2.1.vsix
   http://download.qt.io/archive/vsaddin/

2. 通过Cmake生成VS工程

三个文件夹：一个源码，一个三方库，一个模型数据，如下所示：

OpenSceneGraph编译

在源码目录中创建要给build目录，用于构建，如下：

OpenSceneGraph编译

修改CMakeLists.txt，添加两行，如下：

#
# OpenSceneGraph CMake build file
#
SET(OPENSCENEGRAPH_MAJOR_VERSION 3)
SET(OPENSCENEGRAPH_MINOR_VERSION 6)
SET(OPENSCENEGRAPH_PATCH_VERSION 2)
SET(OPENSCENEGRAPH_SOVERSION 157)

# add 2 lines below：
SET(DESIRED_QT_VERSION "5.9.6" CACHE STRING "")
SET(CMAKE_PREFIX_PATH "C:/Qt/Qt5.9.6/5.9.6/msvc2017_64" CACHE PATH "")

启动CMake，配置源码目录和构建目录，并正确设置配置项，如下：

OpenSceneGraph编译

点击”Configure“，成功后点击”Generate“，成功后点击”Open Project“，启动Visiual Studio 2017，准备开始编译。

3. 编译

启动工程后选择“批生成”，如下：

OpenSceneGraph编译

打两个钩，点击“生成”，睡一觉醒来就完成了，250个成功，0个失败。

如果失败了，那也没办法。

4. 将OSG添加到系统环境变量

OSG_INCLUDE_DIR:
E:\OSG\source\OpenSceneGraph-3.6.2\OpenSceneGraph\include
E:\OSG\source\OpenSceneGraph-3.6.2\OpenSceneGraph\build\include

PATH：
E:\OSG\source\OpenSceneGraph-3.6.2\OpenSceneGraph\build\bin
E:\OSG\source\OpenSceneGraph-3.6.2\3rdparty\bin
E:\OSG\source\OpenSceneGraph-3.6.2\OpenSceneGraph\build\lib

OSG_FILE_PATH：
E:\OSG\source\OpenSceneGraph-3.6.2\OpenSceneGraph-Data

5. 运行example

OpenSceneGraph编译

6. 编写HelloWorld

#include <Windows.h>

#include<osgViewer/Viewer>
#include<osgDB/ReadFile>
int main()
{
	osgViewer::Viewer viewer;
	viewer.setSceneData(osgDB::readNodeFile("cow.osg"));

	return viewer.run();
}

注意下面说明，否则欲哭无泪：

OpenSceneGraph编译