/*---------------------------------------------------------------------------*
  Project:  Horizon
  File:     demo_RenderData.cpp

  Copyright (C)2009-2012 Nintendo Co., Ltd.  All rights reserved.

  These coded instructions, statements, and computer programs contain
  proprietary information of Nintendo of America Inc. and/or Nintendo
  Company Ltd., and are protected by Federal copyright law.  They may
  not be disclosed to third parties or copied or duplicated in any form,
  in whole or in part, without the prior written consent of Nintendo.

  $Rev: 46365 $
 *---------------------------------------------------------------------------*/

#include "demo/RenderData/demo_RenderData.h"

namespace demo
{

    f32 GetLcdWidth(const s32 display)
    {
        if ( display == NN_GX_DISPLAY0 )
        {            
            return NN_GX_DISPLAY0_WIDTH;        
        }
        else if ( display == NN_GX_DISPLAY1 )
        {         
            return NN_GX_DISPLAY1_WIDTH;
        }
        else
        {                     
            return NN_GX_DISPLAY0_WIDTH;
        }
    }

    f32 GetLcdHeight(const s32 display)
    {
        if ( display == NN_GX_DISPLAY0 )
        {            
            return NN_GX_DISPLAY0_HEIGHT;
        }
        else if ( display == NN_GX_DISPLAY1 )
        {
            return NN_GX_DISPLAY1_HEIGHT;            
        }
        else
        {   
            return NN_GX_DISPLAY0_HEIGHT;            
        }
    }

/* ------------------------------------------------------------------------
         RenderData class  member function
   ------------------------------------------------------------------------ */

    RenderData::RenderData(void) :
    m_RenderTarget(NN_GX_DISPLAY0),    
    m_WindowWidth(NN_GX_DISPLAY0_WIDTH), m_WindowHeight(NN_GX_DISPLAY0_HEIGHT),
    m_InverseWindowWidth(1.0f / NN_GX_DISPLAY0_WIDTH), m_InverseWindowHeight(1.0f / NN_GX_DISPLAY0_HEIGHT)    
    {
        m_WindowWidth = GetLcdWidth(m_RenderTarget);
        m_WindowHeight = GetLcdHeight(m_RenderTarget);

        CalculateInverseWindowSize();
    }
    
    RenderData::~RenderData()
    {
    }

    void RenderData::Initialize(void)
    {
    }

    void RenderData::Finalize(void)
    {
    }

    void RenderData::SetWindowSize(const f32 windowWidth, const f32 windowHeight)
    {
        m_WindowWidth = windowWidth;
        m_WindowHeight = windowHeight;

        CalculateInverseWindowSize();
    }

    void RenderData::GetNormalizedDeviceCoordinateXY(const f32 windowCoordinateX, const f32 windowCoordinateY,
        f32& normalizedDeviceCoordinateX, f32& normalizedDeviceCoordinateY)
    {
        normalizedDeviceCoordinateX = GetNormalizedDeviceCoordinateX(m_WindowWidth - windowCoordinateY);
        normalizedDeviceCoordinateY = GetNormalizedDeviceCoordinateY(windowCoordinateX);
    }

    f32 RenderData::GetNormalizedDeviceCoordinateX(const f32 windowCoordinateY)
    {
        return (windowCoordinateY * 2.0f * m_InverseWindowWidth) - 1.0f;
    }

    f32 RenderData::GetNormalizedDeviceCoordinateY(const f32 windowCoordinateX)
    {
        return 1.0f - (windowCoordinateX * 2.0f * m_InverseWindowHeight);
    }

    void RenderData::CalculateInverseWindowSize(void)
    {
        if ( m_WindowWidth > 0.0f )
        {
            m_InverseWindowWidth = 1.0f / m_WindowWidth;
        }
        else
        {
            NN_TPANIC_("Invalid windowWidth = %d\n", m_WindowWidth);
        }

        if ( m_WindowHeight > 0.0f )
        {
            m_InverseWindowHeight = 1.0f / m_WindowHeight;
        }
        else
        {
            NN_TPANIC_("Invalid windowHeight = %d\n", m_WindowHeight);
        }
    }
}