iltf2d.h

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// Copyright 2017-2020, Schlumberger
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
 
//Adapted from: Zgy/Common/iltf2d
#pragma once
 
namespace InternalZGY {
#if 0
}
#endif
 
class ImplicitLinearTransform2d
{
public:
 
  typedef double value_type;                    
  typedef ImplicitLinearTransform2d this_type;  
  struct TiePoint
  {
    value_type a[2];  
    value_type b[2];  
    TiePoint();
 
    TiePoint(value_type a0, value_type a1, value_type b0, value_type b1);
  };
 
  static TiePoint makeTiePoint() { return TiePoint(); }
  static TiePoint makeTiePoint(value_type a0, value_type a1, value_type b0, value_type b1) { return TiePoint(a0,a1,b0,b1); }
 
  static this_type Identity();
 
  ImplicitLinearTransform2d();
 
  ImplicitLinearTransform2d(const TiePoint& pt0,
                            const TiePoint& pt1,
                            const TiePoint& pt2);
 
  bool operator==(const this_type& other) const;
 
  bool operator!=(const this_type& other) const;
 
  bool Compare(const this_type& other, const value_type& errtol = 0) const;
 
  this_type& Push(const this_type& other);
 
  this_type& Translate(value_type t0, value_type t1);
 
  this_type& Rotate(value_type r);
 
  this_type& Scale(value_type s0, value_type s1);
 
  void Apply(value_type* b, const value_type* a) const;
  void operator()(value_type* b, const value_type* a) const { Apply(b, a); }
 
private:
 
  value_type m_matrix[2][3]; 
  ImplicitLinearTransform2d(const this_type& tf1, const this_type& tf2);
};
 
} // end namespace