text: /***************************************************************************
   * Copyright 1998-2018 by authors (see AUTHORS.txt)                        *
   *                                                                         *
   *   This file is part of LuxCoreRender.                                   *
   *                                                                         *
   * 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.                                          *
   ***************************************************************************/
  
  #ifndef _SLG_DOTSTEX_H
  #define	_SLG_DOTSTEX_H
  
  #include "slg/textures/texture.h"
  
  namespace slg {
  
  //------------------------------------------------------------------------------
  // Dots texture
  //------------------------------------------------------------------------------
  
  class DotsTexture : public Texture {
  public:
  	DotsTexture(const TextureMapping2D *mp, const Texture *insideTx, const Texture *outsideTx) :
  		mapping(mp), insideTex(insideTx), outsideTex(outsideTx) { }
  	virtual ~DotsTexture() { delete mapping; }
  
  	virtual TextureType GetType() const { return DOTS; }
  	virtual float GetFloatValue(const HitPoint &hitPoint) const;
  	virtual luxrays::Spectrum GetSpectrumValue(const HitPoint &hitPoint) const;
  	virtual float Y() const {
  		return (insideTex->Y() + outsideTex->Y()) * .5f;
  	}
  	virtual float Filter() const {
  		return (insideTex->Filter() + outsideTex->Filter()) * .5f;
  	}
  
  	virtual void AddReferencedTextures(boost::unordered_set<const Texture *> &referencedTexs) const {
  		Texture::AddReferencedTextures(referencedTexs);
  
  		insideTex->AddReferencedTextures(referencedTexs);
  		outsideTex->AddReferencedTextures(referencedTexs);
  	}
  	virtual void AddReferencedImageMaps(boost::unordered_set<const ImageMap *> &referencedImgMaps) const {
  		insideTex->AddReferencedImageMaps(referencedImgMaps);
  		outsideTex->AddReferencedImageMaps(referencedImgMaps);
  	}
  
  	virtual void UpdateTextureReferences(const Texture *oldTex, const Texture *newTex) {
  		if (insideTex == oldTex)
  			insideTex = newTex;
  		if (outsideTex == oldTex)
  			outsideTex = newTex;
  	}
  
  	const TextureMapping2D *GetTextureMapping() const { return mapping; }
  	const Texture *GetInsideTex() const { return insideTex; }
  	const Texture *GetOutsideTex() const { return outsideTex; }
  
  	virtual luxrays::Properties ToProperties(const ImageMapCache &imgMapCache, const bool useRealFileName) const;
  
  private:
  	bool Evaluate(const HitPoint &hitPoint) const;
  
  	const TextureMapping2D *mapping;
  	const Texture *insideTex;
  	const Texture *outsideTex;
  };
  
  }
  
  #endif	/* _SLG_DOTSTEX_H */
  