CGAL users discussion list

[卢建杰 <>]

is a good idea


在2009-03-26，naresh <> 写道：

Hi

 

You can easily read or write points. You can user  Point_3 from kernel and using ofstream and ifstream you can read and write.

 

 

Here is example :

 

typedef kernel::Point_3 Point_3;

 

Reading :

 

int pointsize;

Point p;

std::ifstream outfile;

outfile.open ("test.pts");

outfile >> pointsize;

 

for(int i=0; i<pointsize; ++i)

{

    outfile >> p;

    // now you have point p that you can do what you want

}

 

Writing :

 

std::ofstream outfile;

outfile.open ("test.pts");

outfile << Points.size() << "\n";

for (int i=0; i< Points.size(); ++i)

{

outfile << Points[i] << "\n";

}

 

All this is only sample psuecode. You have to implement your self

 

 

----- Original Message -----

From:

To:

Sent: Thursday, March 26, 2009 3:04 PM

Subject: [cgal-discuss] Reading and writing Point_3 values to file

Hello,

 

Is there a convenient way to write Point_3 values to a file stream (using a cout operator), and then reading them, using a cin in the same order? I am using a gmpq kernel.

 

Amir.

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