LSquareComplianceMatrix.h

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/*
Copyright 2007-2025. Algoryx Simulation AB.
 
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tutorials, scene files and technical white papers, are copyrighted, proprietary
and confidential material of Algoryx Simulation AB. You may not download, read,
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valid commercial license from Algoryx Simulation AB.
 
Algoryx Simulation AB disclaims all responsibilities for loss or damage caused
from using this software, unless otherwise stated in written agreements with
Algoryx Simulation AB.
*/
 
#pragma once
 
#include <agx/Integer.h>
#include <agx/Real.h>
 
namespace agx
{
  class LSquareComplianceMatrixRow
  {
    public:
      inline LSquareComplianceMatrixRow( Real* data, UInt32 size )
        : m_data( data )
        , m_size( size )
      {
      }
 
      inline Real& operator[]( UInt32 col )
      {
        agxAssert( col < m_size );
        return m_data[ col ];
      }
 
      inline Real operator[]( UInt32 col ) const
      {
        agxAssert( col < m_size );
        return m_data[ col ];
      }
 
      inline UInt32 size() const
      {
        return m_size;
      }
 
    private:
      Real* m_data;
      UInt32 m_size;
  };
 
  class LSquareComplianceMatrix
  {
    public:
      inline LSquareComplianceMatrix( Real* data, UInt32 size, UInt32 ld )
        : m_data( data )
        , m_size( size )
        , m_ld( ld )
      {
      }
 
      inline LSquareComplianceMatrixRow operator[]( UInt32 row ) const
      {
        agxAssert( row < m_size );
        return LSquareComplianceMatrixRow{ m_data + row * m_ld, row + 1u };
      }
 
      inline UInt32 size() const { return m_size; }
 
    private:
      Real* m_data;
      UInt32 m_size;
      UInt32 m_ld;
  };
}