meshpatch Class Reference

Rectangular bezier patch. More...

#include <meshpatch.h>

Collaboration diagram for meshpatch:

List of all members.

Public Member Functions
	meshpatch (uintc M_, uintc N_)
	Build a mesh patch with bernstein polynomials.
	~meshpatch ()
	Memory cleanup.
template<typename T , typename W >
void	eval (T &p, double const u, double const v, W const &pij) const
	Evaluate an actual patch.
Public Attributes
uintc	M
	The number of points on the u-axis.
uintc	N
	The number of points of the v-axis.
Protected Attributes
bernsteinPoly *const	vbu
bernsteinPoly *const	vbv
double *const	vbuval
double *const	vbvval

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Detailed Description

Rectangular bezier patch.

This is a generalization of a patch. The client evaluates patches with a functional object pij in eval.

Definition at line 17 of file meshpatch.h.

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Constructor & Destructor Documentation

meshpatch::meshpatch	(	uintc	M_,
		uintc	N_
	)

Build a mesh patch with bernstein polynomials.

Definition at line 4 of file meshpatch.cpp.

References M, N, vbu, and vbv.

  : M(M_), N(N_), vbu(new bernsteinPoly[M+1]), vbv(new bernsteinPoly[N+1]), 
  vbuval(new double[M+1]), vbvval(new double[N+1])
{
  for (uint i=0; i<=M; ++i)
    vbu[i].construct(M,i);
  for (uint i=0; i<=N; ++i)
    vbv[i].construct(N,i);
}

meshpatch::~meshpatch

(

)

Memory cleanup.

Definition at line 15 of file meshpatch.cpp.

References vbu, vbuval, vbv, and vbvval.

{
  delete[] vbu;
  delete[] vbv;
  delete[] vbuval;
  delete[] vbvval;
}

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Member Function Documentation

template<typename T , typename W >

void meshpatch::eval	(	T &	p,
		double const	u,
		double const	v,
		W const &	pij
	)			const [inline]

Evaluate an actual patch.

Definition at line 44 of file meshpatch.h.

References M, N, vbu, vbuval, vbv, and vbvval.

Referenced by meshpatchtest::test01(), and pointgrid3Dbilineardraw::update().

  {
    for (uint i=0; i<=M; ++i)
      vbuval[i] = vbu[i].eval(u);

    for (uint i=0; i<=N; ++i)
      vbvval[i] = vbv[i].eval(v);

    p = T();
    T p2;
    uint k;
    for (uint i=0; i<=M; ++i)
    {
      T p2;
      for (k=0; k<=N; ++k)
        p2 += pij(i,k)*vbvval[k];

      p += p2*vbuval[i];
    }
  }

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Member Data Documentation

uintc meshpatch::M

The number of points on the u-axis.

Definition at line 22 of file meshpatch.h.

Referenced by eval(), and meshpatch().

uintc meshpatch::N

The number of points of the v-axis.

Definition at line 24 of file meshpatch.h.

Referenced by eval(), and meshpatch().

bernsteinPoly* const meshpatch::vbu [protected]

Definition at line 27 of file meshpatch.h.

Referenced by eval(), meshpatch(), and ~meshpatch().

double* const meshpatch::vbuval [protected]

Definition at line 30 of file meshpatch.h.

Referenced by eval(), and ~meshpatch().

bernsteinPoly* const meshpatch::vbv [protected]

Definition at line 28 of file meshpatch.h.

Referenced by eval(), meshpatch(), and ~meshpatch().

double* const meshpatch::vbvval [protected]

Definition at line 31 of file meshpatch.h.

Referenced by eval(), and ~meshpatch().

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

• bezier/meshpatch.h
• bezier/meshpatch.cpp