C++ (Cpp) FlatPoint::MultiplyY示例

示例#1

文件： FlatEllipse.cpp 项目： Adrien81/XCSoar

bool 

FlatEllipse::Intersect(const FlatLine &line, FlatPoint &i1, FlatPoint &i2) const
{
  const fixed er = ab();
  const fixed ier = ba();
  FlatLine s_line = line;

  s_line.sub(p);
  s_line.rotate(theta.Reciprocal());
  s_line.mul_y(er);

  if (s_line.intersect_czero(a, i1, i2)) {
    i1.MultiplyY(ier);
    i1.Rotate(theta);
    i1.Add(p);
    
    i2.MultiplyY(ier);
    i2.Rotate(theta);
    i2.Add(p);
    
    return true;
  }

  return false;
}

示例#2

文件： FlatEllipse.cpp 项目： kwtskran/XCSoar

bool
FlatEllipse::Intersect(const FlatLine &line, FlatPoint &i1, FlatPoint &i2) const
{
    const double er = ab();
    const double ier = ba();
    FlatLine s_line = line - p;

    s_line.Rotate(theta.Reciprocal());
    s_line.MultiplyY(er);

    if (s_line.IntersectOriginCircle(a, i1, i2)) {
        i1.MultiplyY(ier);
        i1.Rotate(theta);
        i1 += p;

        i2.MultiplyY(ier);
        i2.Rotate(theta);
        i2 += p;

        return true;
    }

    return false;
}