Alpha.h

/*
Copyright (c) 2024-2025 Toksisitee. All rights reserved.

This work is licensed under the terms of the MIT license.
For a copy, refer to license.md or https://opensource.org/licenses/MIT

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
*/

#pragma once
#include "Assets.h"
#include "Palette.h"

namespace Assets
{
	namespace Alpha
	{
		constexpr uint32_t	k_uWidth = 256;
		constexpr uint32_t	k_uHeight = 256;
		constexpr uint32_t	k_uSize = k_uWidth * k_uHeight;
	}

	class CAlpha : public CAsset
	{
	public:
		// ====== Virtual Overrides  ======
		Result	LoadBin( const std::string& sFilePath ) override;
		Result	LoadImg( const std::string& sFilePath ) override { return Result::FAIL_LOAD; }
		Result	ExportImg( const std::string& sFilePath ) override;
		Result	ExportBin( const std::string& sFilePath ) override;
		bool	CreateTexture( LPDIRECT3DDEVICE9 pD3DDevice ) override;
		inline void* GetPtr() override { return static_cast<void*>(&m_Data); }
		// ================================

		Result	Generate();
		Color	GetAlphaColor( uint8_t uIndex );

	protected:
		uint32_t ComputeTable( uint8_t* pData, const Color& targetColor, uint32_t uRow );

	private:
		uint8_t m_Data[Alpha::k_uWidth * Alpha::k_uHeight];
	};
}