/*
---------------------------------------------------------------------------
Open Asset Import Library (assimp)
---------------------------------------------------------------------------

Copyright (c) 2006-2012, assimp team

All rights reserved.

Redistribution and use of this software in source and binary forms, 
with or without modification, are permitted provided that the following 
conditions are met:

* Redistributions of source code must retain the above
  copyright notice, this list of conditions and the
  following disclaimer.

* 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.

* Neither the name of the assimp team, nor the names of its
  contributors may be used to endorse or promote products
  derived from this software without specific prior
  written permission of the assimp team.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
"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 THE COPYRIGHT 
OWNER 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.
---------------------------------------------------------------------------
*/

#if (!defined AV_BACKGROUND_H_INCLUDED)
#define AV_BACKGROUND_H_INCLUDED


class CBackgroundPainter
	{
	CBackgroundPainter()
		: 
		pcTexture(NULL),
		clrColor(D3DCOLOR_ARGB(0xFF,100,100,100)),
		eMode(SIMPLE_COLOR),
		piSkyBoxEffect(NULL)
		{}

public:

	// Supported background draw modi
	enum MODE {SIMPLE_COLOR, TEXTURE_2D, TEXTURE_CUBE};

	// Singleton accessors
	static CBackgroundPainter s_cInstance;
	inline static CBackgroundPainter& Instance ()
		{
		return s_cInstance;
		}

	// set the current background color
	// (this removes any textures loaded)
	void SetColor (D3DCOLOR p_clrNew);

	// Setup a cubemap/a 2d texture as background
	void SetCubeMapBG (const char* p_szPath);
	void SetTextureBG (const char* p_szPath);

	// Called by the render loop
	void OnPreRender();
	void OnPostRender();

	// Release any native resources associated with the instance
	void ReleaseNativeResource();

	// Recreate any native resources associated with the instance
	void RecreateNativeResource();

	// Rotate the skybox
	void RotateSB(const aiMatrix4x4* pm);

	// Reset the state of the skybox
	void ResetSB();

	inline MODE GetMode() const
		{
		return this->eMode;
		}

	inline IDirect3DBaseTexture9* GetTexture()
		{
		return this->pcTexture;
		}

	inline ID3DXBaseEffect* GetEffect()
		{
		return this->piSkyBoxEffect;
		}

private:

	void RemoveSBDeps();

	// current background color
	D3DCOLOR clrColor;

	// current background texture
	IDirect3DBaseTexture9* pcTexture;
	ID3DXEffect* piSkyBoxEffect;

	// current background mode
	MODE eMode;

	// path to the texture
	std::string szPath;

	// transformation matrix for the skybox
	aiMatrix4x4 mMatrix;
	};

#endif // !! AV_BACKGROUND_H_INCLUDED