ZColorScalePal.hpp

#pragma once
 
#include <vector>
#include "opals/config.hpp"
 
namespace opals {
 
  /// Class describing different scaling methods for palette entries
  class OPALS_API ZColorScalePal
  {
  public:
    ZColorScalePal();
    virtual ~ZColorScalePal();
 
    /// scaling of palette nodes
    struct TypeScalePal {
      enum Type {
        autoScale = 0,           ///< automatic scaling of palette nodes
        scaleByFactor,           ///< single scaling factor
        scaleByRange             ///< scaling range 
      };
    };
 
    bool isAutoScale() const     { return type == TypeScalePal::autoScale; };
    bool isScaleByFactor() const { return type == TypeScalePal::scaleByFactor; };
    bool isScaleByRange() const  { return type == TypeScalePal::scaleByRange; };
 
    void setAutoScale();
    void setScaleFactor( const float& scalefac );
    void setScaleRange( const std::vector<float>& range );
 
    float getScaleFactor() const { return isScaleByFactor() ? scale.front() : 0.f; };
    float getScaleMin() const    { return scale.front(); };
    float getScaleMax() const    { return scale.back(); };
    const std::vector<float>& getScaleRange() const { return scale; }
 
    private: 
      TypeScalePal::Type type;
      std::vector<float> scale;
  };
}