linetest Class Reference

Test line class. More...

#include <linetest.h>

List of all members.

Static Public Member Functions
static void	test01 ()
	Basic line tests.
static void	test02 ()
	Testing minimizing points on two lines in 3D space.
static int	unittest01 ()

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Detailed Description

Test line class.

Definition at line 7 of file linetest.h.

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Member Function Documentation

void linetest::test01

(

)

[static]

Basic line tests.

Definition at line 10 of file linetest.cpp.

References delta, point2< T >::distance(), line< PT, PD >::nearestpoint(), line< PT, PD >::nml, line< PT, PD >::normalize(), SHOW, and line< PT, PD >::tD2().

Referenced by main().

{
  typedef point2<double> pt2;
  typedef point3<double> pt3;

  line<pt2,double> L1(pt2(1.0,1.0),pt2());

  cout << "L1: " << (stringc) L1 << endl;
  
  double len=5.0;
  cout << "Normalize to having nml with " << len << " length." << endl;

  L1.normalize(len);
  cout << "L1: " << (stringc) L1 << endl;

  cout << SHOW(L1.nml.distance()) << endl;
  cout << SHOW( L1(0.0) ) << endl;
  cout << SHOW( L1(1.0) ) << endl;

  cout << "Re normalize." << endl;
  L1.normalize();
  cout << "L1: " << (stringc) L1 << endl;

  pt2 p2(6.0,6.0);
  cout << SHOW(p2) << endl;
  cout << "Find the t value of p2." << endl;
  double t1;
  bool res;
  res = L1.tD2(t1,p2);
  cout << SHOW(res) << "  " << SHOW(t1) << endl;
  cout << SHOW(L1(t1)) << endl;

  cout << endl;
  cout << "Testing point minimized to a line." << endl;
  double delta=0.1;
  cout << SHOW(delta) << endl;
  pt2 p3(2.0,3.0);
  cout << SHOW(p3) << endl;
  cout << "Minimize to L1:" << (stringc)L1 << endl;
  L1.nearestpoint(t1,p3);
  cout << SHOW((L1(t1-delta)-p3).distance()) << endl;
  cout << SHOW((L1(t1)-p3).distance()) << endl;
  cout << SHOW((L1(t1+delta)-p3).distance()) << endl;

}

void linetest::test02

(

)

[static]

Testing minimizing points on two lines in 3D space.

Definition at line 57 of file linetest.cpp.

References delta, line< PT, PD >::lineD3minimized(), pts, and SHOW.

Referenced by main().

{
  typedef point3<double> pt3;

  pt3 pts[] = 
  {
    pt3(0.0,0.0,0.0),
    pt3(1.0,-3.0,2.0),
    pt3(.24,.1,-.3),
    pt3(-2.0,-10.0,4.3)
  };

  line<pt3,double> L1(pts[0],pts[1],true);
  line<pt3,double> L2(pts[2],pts[3],true);

  double t1;
  double t2;
  bool res;
  res = L1.lineD3minimized(t1,t2,L2);
  cout << SHOW(res) << endl;

  double delta = 0.1;
  cout << SHOW(delta) << endl;
  
  cout << "Varying t1" << endl;
  cout << SHOW((L1(t1-delta)-L2(t2)).distance()) << endl;
  cout << SHOW((L1(t1)-L2(t2)).distance()) << endl;
  cout << SHOW((L1(t1+delta)-L2(t2)).distance()) << endl;
  
  cout << "Varying t2" << endl;
  cout << SHOW((L1(t1)-L2(t2-delta)).distance()) << endl;
  cout << SHOW((L1(t1)-L2(t2)).distance()) << endl;
  cout << SHOW((L1(t1)-L2(t2+delta)).distance()) << endl;

}

int linetest::unittest01

(

)

[static]

Definition at line 93 of file linetest.cpp.

References assertreturnOS, line< PT, PD >::intersects(), and SHOW.

Referenced by main().

{
  typedef point2<double> pt2;

  line<pt2,double> L1(pt2(0.0,0.0),pt2(8.0,0.0),true);
  line<pt2,double> L2(pt2(3.0,-5.0),pt2(3.0,5.0),true);

  double t0;
  double t1;

  bool res;
  res = L1.intersects(t0,t1,L2);
  if (res==false)
    return 1;

  cout << SHOW( L1(t0) ) << endl;
  cout << SHOW( L2(t1) ) << endl;

  assertreturnOS( zero<double>::test( (L1(t0)-pt2(3.0,0.0)).dot() ) );

  return 0;
}

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The documentation for this class was generated from the following files:

• mathlib/linetest.h
• mathlib/linetest.cpp