arcprob Class Reference

Minimize connected arc distance to control points. More...

#include <arcprob.h>

Collaboration diagram for arcprob:

List of all members.

Public Member Functions
	arcprob ()
	Construct at a later point.
	~arcprob ()
	Memory cleanup.
	arcprob (stringc &filename)
	Read the problem from the text file.
void	solveInitialCondition ()
	Approximate first solution.
void	reader (stringc &filename)
	Read the problem from the text file.
Public Attributes
uint	W
	Number of control points.
double	angle0
	The initial angle (radians).
vector< pt2 >	qi
	Control points.
arcsconnected *	ac
	Line of continuously connected arcs.

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Detailed Description

Minimize connected arc distance to control points.

Definition at line 17 of file arcprob.h.

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Constructor & Destructor Documentation

arcprob::arcprob

(

)

[inline]

Construct at a later point.

Definition at line 34 of file arcprob.h.

    : W(0), angle0(0.0), ac(0) {}

arcprob::~arcprob

(

)

Memory cleanup.

Definition at line 14 of file arcprob.cpp.

References ac.

{
  delete ac;
}

arcprob::arcprob

(

stringc &

filename

)

Read the problem from the text file.

See reader for the expected file format.

Definition at line 8 of file arcprob.cpp.

References reader().

  : W(0), angle0(0.0), ac(0)
{
  reader(filename);
}

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Member Function Documentation

void arcprob::reader

(

stringc &

filename

)

Read the problem from the text file.

The format expected is the following.

Example

angle0 [in degrees] N [the number of arcs] W [the number of control points] control points

45.0
3
7
0.0,0.0
1.0,1.1
1.5,2.8
2.8,4.2
4.8,4.0
6.8,4.2
8.1,5.5

Definition at line 19 of file arcprob.cpp.

References ac, angle0, degtorad, qi, SHOW, solveInitialCondition(), and W.

Referenced by arcprob().

{
  ifstream targ(filename.c_str());
  assert(targ.good()==true);
  if (targ.good()==false)
    return;

  targ >> angle0;
  angle0 *= degtorad;
  uint N;
  targ >> N;
  targ >> W;

cout << SHOW(angle0) << endl;
cout << SHOW(N) << endl;
cout << SHOW(W) << endl;

  assert(W>N);
  assert(N>1);
  
  qi.resize(W);
  for (uint i=0; i<W; ++i)
    targ >> qi[i];

  if (ac!=0)
    delete ac;

  ac = new arcsconnected(5,N);

for (uint i=0; i<qi.size(); ++i)
  cout << SHOW(qi[i]) << endl;
    
  solveInitialCondition();
}

void arcprob::solveInitialCondition

(

)

Approximate first solution.

Definition at line 54 of file arcprob.cpp.

References ac, angle0, arcsconnected::constructPhi0(), arcsconnected::N, qi, and W.

Referenced by reader().

{
  assert(ac!=0);
  if (ac==0)
    return;

  uintc N(ac->N);

  // Let the arcs initially pass through the
  // control points.
  vector< pt2 > u(N+1);
  doublec dx = (double)(W-1) / (double)N;
  uint temp;
  for (uint i=1; i<N; ++i)
  {
    temp = (uint)(floor(dx*i));
    u[i] = qi[temp];
  }
  u[0] = qi[0];
  u[N] = qi[W-1];

  ac->constructPhi0(angle0,u);
}

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Member Data Documentation

arcsconnected* arcprob::ac

Line of continuously connected arcs.

Definition at line 31 of file arcprob.h.

Referenced by reader(), solveInitialCondition(), test07(), and ~arcprob().

double arcprob::angle0

The initial angle (radians).

Definition at line 25 of file arcprob.h.

Referenced by reader(), and solveInitialCondition().

vector< pt2 > arcprob::qi

Control points.

Definition at line 28 of file arcprob.h.

Referenced by reader(), and solveInitialCondition().

uint arcprob::W

Number of control points.

Definition at line 22 of file arcprob.h.

Referenced by reader(), and solveInitialCondition().

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

• arcs/arcprob.h
• arcs/arcprob.cpp