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// Copyright (c) 2013 INRIA Sophia Antipolis - Mediterranee, (France).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org)
//
// $URL$
// $Id$
// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
//
//
// Author(s) : Olivier Devillers
#include <CGAL/Exact_circular_kernel_2.h>
#include <CGAL/CGAL_Ipelet_base.h>
#include <CGAL/Object.h>
#include <CGAL/Cartesian.h>
namespace CGAL_distance_ipelet{
typedef CGAL::Exact_circular_kernel_2 Kernel;
// --------------------------------------------------------------------
const std::string sublabel[] = {
"2 marks",
"2 marks (cm)"
"2 marks (inch)"
"Help"
};
const std::string helpmsg[] = {
"Distance between two marks in ipe screen pts",
"Distance between two marks in centimeters when printed",
"Distance between two marks in inches when printed",
};
class distanceIpelet
: public CGAL::Ipelet_base<Kernel,4> {
public:
distanceIpelet()
:CGAL::Ipelet_base<Kernel,4>("Distance",sublabel,helpmsg){}
void protected_run(int);
};
// --------------------------------------------------------------------
void distanceIpelet::protected_run(int fn)
{
if (fn==3) {
show_help();
return;
}
std::list<Point_2> pt_list;
int i=get_IpePage()->primarySelection();
if (i<0) {
print_error_message(("Nothing selected"));
return;
}
Iso_rectangle_2 bbox=
read_active_objects(
CGAL::dispatch_or_drop_output<Point_2>(
std::back_inserter(pt_list)
)
);
if (pt_list.empty()) {print_error_message(("No mark selected")); return;}
std::list<Point_2>::iterator it=pt_list.begin();
Point_2 p1=*it; ++it;
if (pt_list.end()==it) {
print_error_message(("Only one mark selected")); return;}
Point_2 p2=*it; ++it;
if (pt_list.end()!=it) {
print_error_message(("More than two marks selected")); return;}
double length = sqrt( CGAL::to_double(CGAL::squared_distance(p1,p2)) );
char message[50];
if (fn==0)
sprintf(message,"Distance between marks is %f in ipe pts",length);
else if (fn==1)
sprintf(message,"Distance between marks is %f cm",0.0353*length);
else if (fn==2)
sprintf(message,"Distance between marks is %f inches",0.0139*length);
print_error_message(message);
return;
}
}
CGAL_IPELET(CGAL_distance_ipelet::distanceIpelet)
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