用c++写一个读取txt到cloud库函数
时间: 2024-01-05 09:02:49 浏览: 21
好的,下面是一个简单的读取txt文件到PCL库的函数:
```c++
#include <pcl/io/pcd_io.h>
#include <pcl/point_types.h>
#include <iostream>
#include <fstream>
void readTxtToPointCloud(std::string fileName, pcl::PointCloud<pcl::PointXYZ>::Ptr cloud)
{
std::ifstream inFile(fileName);
if (!inFile)
{
std::cerr << "Unable to open file!" << std::endl;
return;
}
float x, y, z;
while (inFile >> x >> y >> z)
{
pcl::PointXYZ point;
point.x = x;
point.y = y;
point.z = z;
cloud->push_back(point);
}
inFile.close();
}
```
使用方法:
```c++
int main()
{
// 定义点云对象
pcl::PointCloud<pcl::PointXYZ>::Ptr cloud(new pcl::PointCloud<pcl::PointXYZ>);
// 读取txt文件
readTxtToPointCloud("point_cloud.txt", cloud);
// 打印点云数据
std::cout << "Loaded " << cloud->size() << " data points from point_cloud.txt." << std::endl;
for (int i = 0; i < cloud->size(); ++i)
{
std::cout << "x: " << cloud->points[i].x
<< " y: " << cloud->points[i].y
<< " z: " << cloud->points[i].z << std::endl;
}
return 0;
}
```
请注意,本例中假设txt文件中每行都包含三个浮点数,分别表示点的x、y、z坐标。如果您的txt文件格式不同,请根据实际情况做出修改。