/*---------------------------------------------------------------------------*
  Project:  Horizon
  File:     demo_TextsRenderData.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_TextsRenderData.h"

namespace demo
{

/* ------------------------------------------------------------------------
         TextsRenderData class  member function
   ------------------------------------------------------------------------ */

    TextsRenderData::TextsRenderData(void) :
    TrianglesRenderData(),
    m_PackedTextLength(0), m_MaxTextLength(MAX_TEXT_LENGTH),
    m_FontSize(8.0f),
    m_FontBaseSize(FONT_BASE_SIZE),
    m_FontOffsetS(FONT_OFFSET_S),
    m_FontOffsetT(FONT_OFFSET_T)    
    {         
        m_Color[0] = 1.0f;
        m_Color[1] = 1.0f;
        m_Color[2] = 1.0f;
        m_Color[3] = 1.0f;
    }

    TextsRenderData::~TextsRenderData(void)
    {
        Finalize();
    }

    void TextsRenderData::Initialize(void)        
    {    
    }
     
    void TextsRenderData::Finalize(void)
    {
        ClearPackedTextLength();
        TrianglesRenderData::Finalize();
    }

    void TextsRenderData::InitializeVertexBuffers(const u32 vertexAttributes, const GLenum triangleType,
        const u32 maxTextLength)
    {
        SetVertexAttributes(vertexAttributes);
        SetTriangleType(triangleType);

        ClearPackedTextLength();
        SetMaxTextLength(maxTextLength);
    }
   
    void TextsRenderData::SetMaxTextLength(const u32 maxTextLength)
    {        
        m_PackedTextLength = 0;
        m_MaxTextLength = maxTextLength;

        u32 verticesNum = 4 * m_MaxTextLength;
        u32 trianglesNum = 2 * m_MaxTextLength;
        SetVerticesNum(verticesNum);
        SetTrianglesNum(trianglesNum);

        CreateArrays();
        SetPackedTextLength(0);
    }

    void TextsRenderData::AddText(const f32 windowCoordinateX, const f32 windowCoordinateY, 
        const char *text, const u32 textLength, const f32 normalizedDeviceCoordinateZ)
    {
        if ( ( m_PackedTextLength + textLength) >= m_MaxTextLength )
        {                      
            return;
        }

        for (u32 i = 0; i < textLength; ++i)
        {            
            u32 index4 = 4 * (i + m_PackedTextLength);
            u32 index2 = 2 * (i + m_PackedTextLength);
            
            s32 fontW = text[i] - 0x20;            
            f32 fontS = static_cast<f32>(fontW % m_FontBaseSize) * m_FontOffsetS;
            f32 fontT = static_cast<f32>(fontW / m_FontBaseSize) * m_FontOffsetT;
            f32 offset = static_cast<f32>(i) * m_FontSize;
                       
            // POSITION
            f32 normalizedDeviceCoordinateX = 0.0f;
            f32 normalizedDeviceCoordinateY = 0.0f;
            GetNormalizedDeviceCoordinateXY(windowCoordinateX + offset, windowCoordinateY + m_FontSize,
                normalizedDeviceCoordinateX, normalizedDeviceCoordinateY);            
            SetPosition(index4,
                normalizedDeviceCoordinateX, normalizedDeviceCoordinateY, normalizedDeviceCoordinateZ, 1.0f);
            
            GetNormalizedDeviceCoordinateXY(windowCoordinateX + offset, windowCoordinateY,
                normalizedDeviceCoordinateX, normalizedDeviceCoordinateY);
            SetPosition(index4 + 1, 
                normalizedDeviceCoordinateX, normalizedDeviceCoordinateY, normalizedDeviceCoordinateZ, 1.0f);

            GetNormalizedDeviceCoordinateXY(windowCoordinateX + offset + m_FontSize, windowCoordinateY + m_FontSize,
                normalizedDeviceCoordinateX, normalizedDeviceCoordinateY);
            SetPosition(index4 + 2, 
                normalizedDeviceCoordinateX, normalizedDeviceCoordinateY, normalizedDeviceCoordinateZ, 1.0f);

            GetNormalizedDeviceCoordinateXY(windowCoordinateX + offset + m_FontSize, windowCoordinateY,
                normalizedDeviceCoordinateX, normalizedDeviceCoordinateY);
            SetPosition(index4 + 3, 
                normalizedDeviceCoordinateX, normalizedDeviceCoordinateY, normalizedDeviceCoordinateZ, 1.0f);
            
            // COLOR
            for (u32 j = 0; j < 4; j++)            
            {
                SetColor(index4 + j,
                    m_Color[0], m_Color[1], m_Color[2], m_Color[3]);
            }

            // TEXCOORD
            f32 s = fontS + m_FontOffsetS;
            f32 t = fontT + m_FontOffsetT;
            SetTexcoord(index4,
                s, t, 0.0f);

            s = fontS + m_FontOffsetS;
            t = fontT;
            SetTexcoord(index4 + 1, 
                s, t, 0.0f);

            s = fontS;
            t = fontT + m_FontOffsetT;
            SetTexcoord(index4 + 2, 
                s, t, 0.0f);

            s = fontS;
            t = fontT;
            SetTexcoord(index4 + 3, 
                s, t, 0.0f);

            // INDEX
            SetIndex(index2,
                index4, index4 + 1, index4 + 2);

            SetIndex(index2 + 1,
                index4 + 2, index4 + 1, index4 + 3);
        }
        
        m_PackedTextLength += textLength;
        SetPackedTextLength(m_PackedTextLength);    
    }

    void TextsRenderData::ClearPackedTextLength(void)
    {
        SetPackedTextLength(0);
    }

    void TextsRenderData::SetPackedTextLength(const u32 packedTextLength)
    {
        m_PackedTextLength = packedTextLength;
        SetPackedVerticesNum(m_PackedTextLength * 4);
        SetPackedTrianglesNum(m_PackedTextLength * 2);
    }

    u32 TextsRenderData::GetPackedTextLength(void) const
    {
        return m_PackedTextLength;
    }

    void TextsRenderData::SetFontSize(const f32 fontSize)
    {
        m_FontSize = fontSize;
    }

    void TextsRenderData::SetFontColor(const f32 red, const f32 green,
        const f32 blue, const f32 alpha)
    {
        m_Color[0] = red;
        m_Color[1] = green;
        m_Color[2] = blue;
        m_Color[3] = alpha;
    }
                
}