OsgHudText.cpp

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#include "StdAfx.h"
#include "OsgHudText.h"

namespace OsgAnimatSim
{
        namespace Visualization
        {

OsgHudText::OsgHudText()
{
        //Default color is white
        m_aryColor.Set(1, 1, 1, 1);
        m_ptPosition.Set(10,10, 0); //Default to the lower left corner
        m_strFont = "fonts/arial.ttf";
        m_iCharSize = 30;
        m_strText = "";
        m_lpDisplayData = NULL;
        m_lpUpdateData = NULL;
        m_fltUpdateInterval = 1;
}

OsgHudText::OsgHudText(float *aryColor, CStdFPoint &ptPosition, std::string strFont, int iCharSize, std::string strText, std::string strDisplayTargetID, std::string strDisplayDataType, std::string strUpdateTargetID, std::string strUpdateDataType, float fltUpdateInterval)
{
        m_aryColor.Set(aryColor[0], aryColor[1], aryColor[2], aryColor[3]);
        m_ptPosition = ptPosition;
        m_strFont = strFont;
        m_iCharSize = iCharSize;
        m_strText = strText;
        m_lpDisplayData = NULL;
        m_lpUpdateData = NULL;
        m_strDisplayTargetID = strDisplayTargetID;
        m_strDisplayDataType = strDisplayDataType;
        m_strUpdateTargetID = strUpdateTargetID;
        m_strUpdateDataType = strUpdateDataType;
        m_fltUpdateInterval = fltUpdateInterval;
}

OsgHudText::~OsgHudText()
{
}

void OsgHudText::Initialize(void *lpVoidProjection)
{
        HudText::Initialize(lpVoidProjection);

        m_fltPrevious = -1;
        osg::Projection *lpProjection = (osg::Projection *) (lpVoidProjection);
        if(!lpProjection)
                THROW_PARAM_ERROR(Osg_Err_lHudProjectionNotDefined, Osg_Err_strHudProjectionNotDefined, "ID", m_strID);

        m_osgText = new osgText::Text;
        m_osgText->setDataVariance(osg::Object::DYNAMIC);
        m_osgText->setColor(osg::Vec4(m_aryColor[0], m_aryColor[1], m_aryColor[2], m_aryColor[3]));
        m_osgText->setPosition(osg::Vec3(m_ptPosition.x, m_ptPosition.y, m_ptPosition.z));
        m_osgText->setFont(m_strFont.c_str());
        m_osgText->setCharacterSize(m_iCharSize); 
        m_osgText->setText(""); 

        m_osgGeode = new osg::Geode;
    m_osgGeode->addDrawable(m_osgText.get());
    lpProjection->addChild(m_osgGeode.get());
}

void OsgHudText::ResetSimulation()
{
        m_fltPrevious = -1;
}

void OsgHudText::Update()
{
    char str[1024];

        if(m_osgText.valid() && m_lpDisplayData && m_lpUpdateData && (fabs(*m_lpUpdateData-m_fltPrevious) > 0.1) )
        {
                sprintf(str, m_strText.c_str(), *m_lpDisplayData);
                m_osgText->setText(str);
                m_fltPrevious = *m_lpUpdateData;
        }
}

        }                       // Visualization
}                               //OsgAnimatSim