kraken/kraken/nodes/KRLODGroup.h

//
//  KRLODGroup.h
//  Kraken Engine
//
//  Copyright 2025 Kearwood Gilbert. All rights reserved.
//  
//  Redistribution and use in source and binary forms, with or without modification, are
//  permitted provided that the following conditions are met:
//  
//  1. Redistributions of source code must retain the above copyright notice, this list of
//  conditions and the following disclaimer.
//  
//  2. Redistributions in binary form must reproduce the above copyright notice, this list
//  of conditions and the following disclaimer in the documentation and/or other materials
//  provided with the distribution.
//  
//  THIS SOFTWARE IS PROVIDED BY KEARWOOD GILBERT ''AS IS'' AND ANY EXPRESS OR IMPLIED
//  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
//  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KEARWOOD GILBERT OR
//  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
//  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
//  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
//  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
//  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
//  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//  
//  The views and conclusions contained in the software and documentation are those of the
//  authors and should not be interpreted as representing official policies, either expressed
//  or implied, of Kearwood Gilbert.
//

#pragma once

#include "resources/KRResource.h"
#include "KRNode.h"

class KRLODGroup : public KRNode
{
public:
  static void InitNodeInfo(KrNodeInfo* nodeInfo);
  KRLODGroup(KRScene& scene, std::string name);
  virtual ~KRLODGroup();
  virtual std::string getElementName();
  virtual tinyxml2::XMLElement* saveXML(tinyxml2::XMLNode* parent);
  virtual void loadXML(tinyxml2::XMLElement* e);

  float getMinDistance();
  float getMaxDistance();
  void setMinDistance(float min_distance);
  void setMaxDistance(float max_distance);

  const hydra::AABB& getReference() const;
  void setReference(const hydra::AABB& reference);
  void setUseWorldUnits(bool use_world_units);
  bool getUseWorldUnits() const;

  LodVisibility calcLODVisibility(const KRViewport& viewport);

private:
  KRNODE_PROPERTY(float, m_min_distance, 0.f, "min_distance");
  KRNODE_PROPERTY(float, m_max_distance, 0.f, "max_distance");
  KRNODE_PROPERTY(hydra::AABB, m_reference, hydra::AABB({ 0.f, 0.f, 0.f, 0.f, 0.f, 0.f}), "reference"); // Point of reference, used for distance calculation.  Usually set to the bounding box center
  KRNODE_PROPERTY(bool, m_use_world_units, true, "use_world_units");
};