/*
 * Copyright(c) Live2D Inc. All rights reserved.
 *
 * Use of this source code is governed by the Live2D Open Software license
 * that can be found at http://live2d.com/eula/live2d-open-software-license-agreement_en.html.
 */

#include "CubismModelMatrix.hpp"
#include "Type/csmString.hpp"

namespace Live2D { namespace Cubism { namespace Framework {

CubismModelMatrix::CubismModelMatrix()
                                : _width(0.0f)
                                , _height(0.0f)
{ }

CubismModelMatrix::CubismModelMatrix(csmFloat32 w, csmFloat32 h)
{
    _width = w;
    _height = h;

    // 原点(0,0)を中心にして、画面に収まるような大きさで初期化
    if (_width > _height)
    {
        SetWidth(_height / _width);
    }
    else
    {
        SetHeight(1.0f);
    }
}

CubismModelMatrix::~CubismModelMatrix()
{ }

void CubismModelMatrix::SetCenterPosition(csmFloat32 x, csmFloat32 y)
{
    CenterX(x);
    CenterY(y);
}

void CubismModelMatrix::Bottom(csmFloat32 y)
{
    const csmFloat32 h = _height * GetScaleY();
    TranslateY(y - h);
}

void CubismModelMatrix::CenterY(csmFloat32 y)
{
    const csmFloat32 h = _height * GetScaleY();
    TranslateY(y - (h / 2.0f));
}

void CubismModelMatrix::Right(csmFloat32 x)
{
    const csmFloat32 w = _width * GetScaleX();
    TranslateX(x - w);
}

void CubismModelMatrix::CenterX(csmFloat32 x)
{
    const csmFloat32 w = _width * GetScaleX();
    TranslateX(x - (w / 2.0f));
}

void CubismModelMatrix::SetWidth(csmFloat32 w)
{
    const csmFloat32 scaleX = w / _width;
    const csmFloat32 scaleY = scaleX;
    Scale(scaleX, scaleY);
}

void CubismModelMatrix::SetHeight(csmFloat32 h)
{
    const csmFloat32 scaleX = h / _height;
    const csmFloat32 scaleY = scaleX;
    Scale(scaleX, scaleY);
}

void CubismModelMatrix::SetupFromLayout(csmMap<csmString, csmFloat32>& layout)
{
    const csmChar* KeyWidth = "width";
    const csmChar* KeyHeight = "height";
    const csmChar* KeyX = "x";
    const csmChar* KeyY = "y";
    const csmChar* KeyCenterX = "center_x";
    const csmChar* KeyCenterY = "center_y";
    const csmChar* KeyTop = "top";
    const csmChar* KeyBottom = "bottom";
    const csmChar* KeyLeft = "left";
    const csmChar* KeyRight = "right";

    for (csmMap<csmString, csmFloat32>::const_iterator ite = layout.Begin(); ite != layout.End(); ++ite)
    {
        const csmString key = ite->First;
        const csmFloat32 value = ite->Second;

        if (key == KeyWidth)
        {
            SetWidth(value);
        }
        else if (key == KeyHeight)
        {
            SetHeight(value);
        }
    }

    for (csmMap<csmString, csmFloat32>::const_iterator ite = layout.Begin(); ite != layout.End(); ++ite)
    {
        const csmString key = ite->First;
        const csmFloat32 value = ite->Second;

        if (key == KeyX)
        {
            SetX(value);
        }
        else if (key == KeyY)
        {
            SetY(value);
        }
        else if (key == KeyCenterX)
        {
            CenterX(value);
        }
        else if (key == KeyCenterY)
        {
            CenterY(value);
        }
        else if (key == KeyTop)
        {
            Top(value);
        }
        else if (key == KeyBottom)
        {
            Bottom(value);
        }
        else if (key == KeyLeft)
        {
            Left(value);
        }
        else if (key == KeyRight)
        {
            Right(value);
        }
    }
}

void CubismModelMatrix::SetPosition(csmFloat32 x, csmFloat32 y)
{
    Translate(x, y);
}

void CubismModelMatrix::Top(csmFloat32 y)
{
    SetY(y);
}

void CubismModelMatrix::Left(csmFloat32 x)
{
    SetX(x);
}

void CubismModelMatrix::SetX(csmFloat32 x)
{
    TranslateX(x);
}

void CubismModelMatrix::SetY(csmFloat32 y)
{
    TranslateY(y);
}

}}}
