VTK Android移植和示例

1、准备工作 安装NDK Android SDK/Tools

wget https://dl.google.com/android/repository/android-ndk-r16b-linux-x86_64.zip

7za x android-ndk-r16b-linux-x86_64.zip

设置环境变量：

$] vim /etc/profile 

在文件结尾增加：

export NDK_ROOT=/home/VTK/android-ndk-r16b
export ANDROID_NDK=/home/VTK/android-ndk-r16b
export ANDROID_PLATFORM_TOOL=/home/VTK/platform-tools
export ANDROID_TOOL=/home/VTK/tools
export PATH PATH=$PATH:$NDK_ROOT:$ANDROID_TOOL:$ANDROID_PLATFORM_TOOL:$GOROOT/bin:$GOPAHT/bin

如果需要Linux编译Android Demo 自行安装Android platform-tools

https://developer.android.com/studio/releases/platform-tools 

去下载并安装，设置环境变量 platform-tools_r28.0.1-linux.zip


https://developer.android.com/studio/ 

去下载并安装，设置环境变量 sdk-tools-linux-4333796.zip

2、依赖工具 cmake mesa and xt

Install mesa and xt

yum install mesa-libGL-devel
yum install mesa-libGLU-devel
yum install libXt-devel

Install cmake

https://cmake.org/download/
download cmake-3.13.2-Linux-x86_64.sh
chmod 755 cmake-3.13.2-Linux-x86_64.sh
./cmake-3.13.2-Linux-x86_64.sh --skip-license --prefix=/usr/

3、下载VTK源码并编译

wget https://www.vtk.org/files/release/8.2/VTK-8.2.0.tar.gz
tar zxvf VTK-8.2.0.tar.gz

运行编译脚本

cd VTK-8.2.0
mkdir build
cd build
cp  auto_build_clean.sh auto_build_android.sh  build
./auto_build_android.sh

_编译脚本 auto_buildandroid.sh 内容

#!/bin/bash
cmake  -DCMAKE_TOOLCHAIN_FILE=$NDK_ROOT/build/cmake/android.toolchain.cmake  \
-DCMAKE_ANDROID_NDK=$NDK_ROOT \
-DCMAKE_VERBOSE_MAKE=ON \
-DCMAKE_SYSTEM_NAME=Android \
-DCMAKE_BUILD_TYPE=Release \
-DCMAKE_CXX_FLAGS='-std=c++11 -fpic -fexceptions -frtti' \
-DCMAKE_C_FLAGS='-fpic' \
-DCMAKE_ANDROID_STL_TYPE='c++_static' \
-DCMAKE_SYSTEM_VERSION=24 \
-DVTK_ANDROID_BUILD=ON \
-DANDROID_NATIVE_API_LEVEL=24 \
-DOPENGL_ES_VERSION=3.0 ..

cmake --build . 

_清除脚本 auto_buildclean.sh 内容

#!/bin/bash
rm -rf CMakeCache.txt
rm -rf CMakeFiles
rm -rf cmake_install.cmake
rm -rf Makefile
rm -rf CTestTestfile.cmake
rm -rf CMakeExternals  
rm -rf CMakeTmp  
rm -rf CompileTools  
rm -rf CTestCustom.cmake  
rm -rf ExternalData

运行脚本中,请耐心等待

注意：遇到 vtk error: ‘round’ is not a member of ‘std’ ，则将 “std::round” 直接修改为 “round” 即可继续编译

编译好的库目录在： ls CMakeExternals/Install/vtk-android 包括 include lib share等3个目录，分别存放头文件 库文件

创建发布库目录 cp -rf CMakeExternals/Install/vtk-android /home/VTK/

到此，库编译完成了

4、编译JavaVTK工程

源码见： https://github.com/panyingyun/vtkandroiddemo/tree/master/JavaVTK2

编译 libJavaVTK.so

cd JavaVTK2/app/src/main/cpp/
./auto_build_android.sh

编译完成后将 libJavaVTK.so 拷贝到 app/src/main/jniLibs/armeabi-v7a/下 即可使用android studio工具编译出apk APK见 https://github.com/panyingyun/vtkandroiddemo/releases/download/0.1/javavtk-debug.apk

运行截图：

详细CMakeLists.txt

cmake_minimum_required(VERSION 3.4.1)
set(CMAKE_SYSTEM_NAME Android)
set(CMAKE_SYSTEM_VERSION "24")
set(CMAKE_ANDROID_ARCH_ABI "armeabi-v7a")
set(CMAKE_ANDROID_NDK "/home/VTK/android-ndk-r16b")
set(VTK_DIR "/home/VTK/vtk-android/lib/cmake/vtk-8.2")
project(JavaVTK)

find_package(VTK REQUIRED)

include(${VTK_USE_FILE})

set(sources  main.cxx)

add_library(JavaVTK SHARED ${sources})
target_link_libraries(JavaVTK android  log  EGL GLESv3 stdc++ ${VTK_LIBRARIES})

附录1：vtk-android库链接，如果不自己编译，可直接下载使用

https://github.com/panyingyun/vtkandroiddemo/blob/master/vtkandroid/vtk-android.tar.gz

附录2：测试APK JavaVTK.apk 下载地址

https://github.com/panyingyun/vtkandroiddemo/blob/master/vtkandroid/JavaVTK.apk

附录3：VTK编译脚本 下载地址

https://github.com/panyingyun/vtkandroiddemo/blob/master/vtkandroid/auto_build_android.sh