使用CloudViewer类显示点云。
1.下面贴出CMakeLists.txt文件代码
cmake_minimum_required(VERSION 2.8 FATAL_ERROR)
project(show_pointcloud)
find_package(PCL 1.2 REQUIRED)
include_directories(${PCL_INCLUDE_DIRS})
link_directories(${PCL_LIBRARY_DIRS})
add_definitions(${PCL_DEFINITIONS})
add_executable (show_pointcloud show_pointcloud.cpp)
target_link_libraries (show_pointcloud ${PCL_LIBRARIES})
2.显示点云源码，下面的bunny.pcd文件是斯坦福大学制作的兔子点云文件
#include <pcl/visualization/cloud_viewer.h>
#include <iostream>
#include <pcl/io/io.h>
#include <pcl/io/pcd_io.h>
int user_data;
void
viewerOneOff (pcl::visualization::PCLVisualizer& viewer)
{
viewer.setBackgroundColor (1.0, 0.5, 1.0);
pcl::PointXYZ o;
o.x = 1.0;
o.y = 0;
o.z = 0;
viewer.addSphere (o, 0.25, "sphere", 0);
std::cout << "i only run once" << std::endl;
}
void
viewerPsycho (pcl::visualization::PCLVisualizer& viewer)
{
static unsigned count = 0;
std::stringstream ss;
ss << "Once per viewer loop: " << count++;
viewer.removeShape ("text", 0);
viewer.addText (ss.str(), 200, 300, "text", 0);
//FIXME: possible race condition here:
user_data++;
}
int
main ()
{
pcl::PointCloud<pcl::PointXYZRGBA>::Ptr cloud (new pcl::PointCloud<pcl::PointXYZRGBA>);
pcl::io::loadPCDFile ("bunny.pcd", *cloud);
pcl::visualization::CloudViewer viewer("Cloud Viewer");
//blocks until the cloud is actually rendered
viewer.showCloud(cloud);
//use the following functions to get access to the underlying more advanced/powerful
//PCLVisualizer
//This will only get called once
viewer.runOnVisualizationThreadOnce (viewerOneOff);
//This will get called once per visualization iteration
viewer.runOnVisualizationThread (viewerPsycho);
while (!viewer.wasStopped ())
{
//you can also do cool processing here
//FIXME: Note that this is running in a separate thread from viewerPsycho
//and you should guard against race conditions yourself...
user_data++;
}
return 0;
}
3、结果如下图
