//----------------------------------------------------------------------------
// William Baxter III's Ray Tracer
//
//     Project for Comp 238, Raster Graphics
//     University of North Carolina at Chapel Hill
//     
// $Id:$
//----------------------------------------------------------------------------

#ifndef WB3TEXTURE_H
#define WB3TEXTURE_H

// Colosseum Image Library Headers
#include <bitmapimage.h>
#include <imagetype.h>
#include <vec2f.hpp>
#include <vec3f.hpp>

#include "wb3TextureImage.hpp"

// Right now this texture class is hard coded to use an image,
// and take only 2d coords.  It would make sense for use to be
// able to subclass one of these to make procedural textures.
// if so then we would also want access to the 3d point, for doing
// solid textures.

class wb3Texture
{
public:
  wb3Texture();
  ~wb3Texture();

  void SetTextureImage(wb3TextureImage *pTex);
  wb3TextureImage* GetTextureImage();

  void LoadFromFile(const char *filename);
  Vec3f& GetValue(Vec3f &ret, const Vec2f& UV);

  void SetBilerp(bool doBilerp);
  bool GetBilerp() const;

protected:
  wb3TextureImage *m_pTex;
  bool m_bBilerp;
  // TODO: transform matricies and such go here...
};

//----------------------------------------------------------------------------
inline void wb3Texture::SetTextureImage(wb3TextureImage *pTex)
{
  m_pTex = pTex;
}
//----------------------------------------------------------------------------
inline wb3TextureImage* wb3Texture::GetTextureImage()
{
  return m_pTex;
}
//----------------------------------------------------------------------------
inline void wb3Texture::LoadFromFile(const char *filename)
{
  if (m_pTex == 0) m_pTex = new wb3TextureImage();
  m_pTex->LoadFromFile(filename);
}
//----------------------------------------------------------------------------
inline Vec3f& wb3Texture::GetValue(Vec3f &ret, const Vec2f& UV)
{
  if (m_pTex == 0) m_pTex = new wb3TextureImage();
  return m_pTex->GetValue(ret, UV, m_bBilerp);
}
//----------------------------------------------------------------------------
inline void wb3Texture::SetBilerp(bool doBilerp)
{
  m_bBilerp = doBilerp;
}
//----------------------------------------------------------------------------
inline bool wb3Texture::GetBilerp() const
{
  return m_bBilerp;
}
//----------------------------------------------------------------------------
#endif