TextureProperties.h

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// $Id$
//==============================================================================
//==============================================================================
 
#ifndef TEXTURE_PROPERTIES_H_
#define TEXTURE_PROPERTIES_H_
 
#include "Function.h"
#include "MatVec.h"
#include <map>
 
namespace tinyxml2 { class XMLElement; }
class Vec3;
 
 
class TextureProperties {
public:
  void parse (const tinyxml2::XMLElement* elem);
 
  void printLog() const;
 
  bool getProperty(const std::string& name, const Vec3& X, double& val) const;
 
  bool hasProperty(const std::string& name) const;
 
protected:
  struct Property {
    double min; 
    double max; 
    Matrix3D textureData; 
    bool prescaled = false; 
  };
 
  std::map<std::string, Property> properties; 
};
 
 
class PropertyFunc : public RealFunc {
public:
  PropertyFunc(const std::string& prop, const TextureProperties& props)
     : m_prop(prop), m_props(props)
   {}
 
  virtual ~PropertyFunc() {}
 
  double evaluate(const Vec3& X) const override
  {
    double val;
    m_props.getProperty(m_prop, X, val);
    return val;
  }
 
protected:
  std::string m_prop; 
  const TextureProperties& m_props; 
};
 
#endif