/*
* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
* its licensors.
*
* For complete copyright and license terms please see the LICENSE at the root of this
* distribution (the "License"). All use of this software is governed by the License,
* or, if provided, by the license below or the license accompanying this file. Do not
* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*
*/
// Original file Copyright Crytek GMBH or its affiliates, used under license.

// Description : Ruler helper for Editor to determine distances


#include "StdAfx.h"
#include "RulerPoint.h"
#include "Ruler.h"

#include "IRenderAuxGeom.h"

//////////////////////////////////////////////////////////////////////////
CRulerPoint::CRulerPoint()
    : m_type(eType_Invalid)
    , m_vPoint(ZERO)
    , m_ObjectGUID(GUID_NULL)
{
    Reset();
}

//////////////////////////////////////////////////////////////////////////
CRulerPoint& CRulerPoint::operator =(CRulerPoint const& other)
{
    if (this != &other)
    {
        Reset(); // Manage deselect of current object, etc.

        m_type = other.m_type;
        m_vPoint = other.m_vPoint;
        m_ObjectGUID = other.m_ObjectGUID;
        m_sphereScale = other.m_sphereScale;
        m_sphereTrans = other.m_sphereTrans;
    }

    return *this;
}

//////////////////////////////////////////////////////////////////////////
void CRulerPoint::Reset()
{
    // Kill highlight of current object
    CBaseObject* pObject = GetObject();
    if (pObject)
    {
        pObject->SetHighlight(false);
    }

    m_type = eType_Invalid;
    m_vPoint.zero();
    m_ObjectGUID = GUID_NULL;
}

//////////////////////////////////////////////////////////////////////////
void CRulerPoint::Render(IRenderer* pRenderer)
{
    CRY_ASSERT(pRenderer);
    IRenderAuxGeom* pAuxGeom = pRenderer->GetIRenderAuxGeom();

    switch (m_type)
    {
    case eType_Point:
    {
        Vec3 vOffset(0.1f, 0.1f, 0.1f);
        pAuxGeom->SetRenderFlags(e_Def3DPublicRenderflags | e_AlphaBlended);
        pAuxGeom->DrawSphere(m_vPoint, m_sphereScale, ColorF(1, 1, 1, m_sphereTrans));
        pAuxGeom->DrawAABB(AABB(m_vPoint - vOffset * m_sphereScale, m_vPoint + vOffset * m_sphereScale), false, ColorF(0.0f, 1.0f, 0.0f, 1.0f), eBBD_Faceted);
    }
    break;

    case eType_Object:
    {
        CBaseObject* pObject = GetObject();
        if (pObject)
        {
            pObject->SetHighlight(true);
        }
    }
    break;

    default:
        return;     // No extra drawing
    }
}

//////////////////////////////////////////////////////////////////////////
void CRulerPoint::Set(const Vec3& vPos)
{
    Reset();

    m_type = eType_Point;
    m_vPoint = vPos;
}

//////////////////////////////////////////////////////////////////////////
void CRulerPoint::Set(CBaseObject* pObject)
{
    Reset();

    m_type = eType_Object;
    m_ObjectGUID = (pObject ? pObject->GetId() : GUID_NULL);
}

//////////////////////////////////////////////////////////////////////////
void CRulerPoint::SetHelperSettings(float scale, float trans)
{
    m_sphereScale = scale;
    m_sphereTrans = trans;
}

//////////////////////////////////////////////////////////////////////////
bool CRulerPoint::IsEmpty() const
{
    bool bResult = true;

    switch (m_type)
    {
    case eType_Invalid:
        bResult = true;
        break;

    case eType_Point:
        bResult = m_vPoint.IsZero();
        break;

    case eType_Object:
        bResult = (GetObject() == 0);
        break;
    }

    return bResult;
}

//////////////////////////////////////////////////////////////////////////
Vec3 CRulerPoint::GetPos() const
{
    Vec3 vResult(ZERO);

    switch (m_type)
    {
    case eType_Point:
        vResult = m_vPoint;
        break;

    case eType_Object:
    {
        CBaseObject* pObject = GetObject();
        if (pObject)
        {
            vResult = pObject->GetWorldPos();
        }
    }
    break;
    }

    return vResult;
}

//////////////////////////////////////////////////////////////////////////
Vec3 CRulerPoint::GetMidPoint(const CRulerPoint& otherPoint) const
{
    Vec3 vResult(ZERO);

    if (!IsEmpty() && !otherPoint.IsEmpty())
    {
        vResult = GetPos() + (otherPoint.GetPos() - GetPos()) * 0.5f;
    }
    else if (!IsEmpty())
    {
        vResult = GetPos();
    }
    else
    {
        vResult = otherPoint.GetPos();
    }

    return vResult;
}

//////////////////////////////////////////////////////////////////////////
float CRulerPoint::GetDistance(const CRulerPoint& otherPoint) const
{
    float fResult = 0.0f;

    if (!IsEmpty() && !otherPoint.IsEmpty())
    {
        fResult = GetPos().GetDistance(otherPoint.GetPos());
    }

    return fResult;
}

//////////////////////////////////////////////////////////////////////////
CBaseObject* CRulerPoint::GetObject() const
{
    CBaseObject* pResult = NULL;

    if (m_type == eType_Object)
    {
        pResult = GetIEditor()->GetObjectManager()->FindObject(m_ObjectGUID);
    }

    return pResult;
}