Esempi in C++ (Cpp) per ON_2dVector::Zero

Esempio n. 1

File: opennurbs_ellipse.cpp Progetto: Arecius/opennurbs

ON_2dVector ON_Ellipse::GradientAt( 
                 const ON_2dPoint& p // coordinates in plane
                 ) const
{
  ON_2dVector g;
  if ( radius[0] != 0.0 && radius[1] != 0.0 ) {
    g.x = 2.0*p.x/(radius[0]*radius[0]);
    g.y = 2.0*p.y/(radius[1]*radius[1]);
  }
  else {
    g.Zero();
  }
  return g;
}

Esempio n. 2

File: opennurbs_circle.cpp Progetto: ckvk/opennurbs

ON_2dVector ON_Circle::GradientAt( 
                 const ON_2dPoint& p // coordinates in plane
                 ) const
{
  ON_2dVector g;
  if ( radius != 0.0 ) {
    const double rr = 2.0/(radius*radius);
    g.x = rr*p.x;
    g.y = rr*p.y;
  }
  else {
    g.Zero();
  }
  return g;
}