TextObject.h

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/*
 * Copyright (C) 2012 by
 *   MetraLabs GmbH (MLAB), GERMANY
 * and
 *   Neuroinformatics and Cognitive Robotics Labs (NICR) at TU Ilmenau, GERMANY
 * All rights reserved.
 *
 * Contact: info@mira-project.org
 *
 * Commercial Usage:
 *   Licensees holding valid commercial licenses may use this file in
 *   accordance with the commercial license agreement provided with the
 *   software or, alternatively, in accordance with the terms contained in
 *   a written agreement between you and MLAB or NICR.
 *
 * GNU General Public License Usage:
 *   Alternatively, this file may be used under the terms of the GNU
 *   General Public License version 3.0 as published by the Free Software
 *   Foundation and appearing in the file LICENSE.GPL3 included in the
 *   packaging of this file. Please review the following information to
 *   ensure the GNU General Public License version 3.0 requirements will be
 *   met: http://www.gnu.org/copyleft/gpl.html.
 *   Alternatively you may (at your option) use any later version of the GNU
 *   General Public License if such license has been publicly approved by
 *   MLAB and NICR (or its successors, if any).
 *
 * IN NO EVENT SHALL "MLAB" OR "NICR" BE LIABLE TO ANY PARTY FOR DIRECT,
 * INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF
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 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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 */

#ifndef _MIRA_TEXTOBJECT_H_
#define _MIRA_TEXTOBJECT_H_

#ifndef Q_MOC_RUN
#include <OGRE/OgreMovableObject.h>
#include <OGRE/OgreRenderable.h>
#include <OGRE/OgreVector3.h>
#include <OGRE/OgreQuaternion.h>
#endif

#if (OGRE_VERSION >= 0x010900)
#include <OGRE/Overlay/OgreFont.h>
#endif

#include <visualization/3d/VisualizationObject.h>

namespace Ogre
{
    class RenderQueue;
    class Camera;
}

namespace mira {


class TextObject: public Ogre::MovableObject, public Ogre::Renderable, public VisualizationObject
{
    /******************************** TextObject data ****************************/
public:
    enum HorizontalAlignment
    {
        H_LEFT,
        H_CENTER,
        H_RIGHT
    };
    enum VerticalAlignment
    {
        V_BELOW,
        V_ABOVE,
        V_CENTER
    };

protected:
    Ogre::String mFontName;
    Ogre::String mType;
    Ogre::String mName;
    Ogre::String mCaption;
    HorizontalAlignment mHorizontalAlignment;
    VerticalAlignment mVerticalAlignment;

    Ogre::ColourValue mColor;
    Ogre::RenderOperation mRenderOp;
    Ogre::AxisAlignedBox mAABB;
    Ogre::LightList mLList;

    Ogre::Real mCharHeight;
    Ogre::Real mSpaceWidth;

    bool mNeedUpdate;
    bool mUpdateColors;
    bool mOnTop;

    Ogre::Real mTimeUntilNextToggle;
    Ogre::Real mRadius;

    Ogre::Vector3 mGlobalTranslation;
    Ogre::Vector3 mLocalTranslation;

    Ogre::Camera *mCam;
    Ogre::RenderWindow *mWin;
    Ogre::Font *mFont;
    Ogre::MaterialPtr mMaterial;
    Ogre::MaterialPtr mBackgroundMaterial;

    /******************************** public methods ******************************/
public:

    TextObject(const Ogre::String &caption,
               Ogre::SceneManager* sceneManager,
               Ogre::SceneNode* parent=NULL);

    TextObject(const Ogre::String &caption,
               const Ogre::String &fontName,
               Ogre::SceneManager* sceneManager,
               Ogre::SceneNode* parent=NULL);

    virtual ~TextObject();

    virtual void visitRenderables(Ogre::Renderable::Visitor* visitor,
                                  bool debugRenderables = false);

    virtual void setColor(const Ogre::ColourValue &color);
    virtual void setVisible(bool visible, bool cascade = true);

    // Set settings
    void setFontName(const Ogre::String &fontName);
    void setCaption(const Ogre::String &caption);
    void setCharacterHeight(Ogre::Real height);
    void setSpaceWidth(Ogre::Real width);
    void setTextAlignment(const HorizontalAlignment& horizontalAlignment,
                          const VerticalAlignment& verticalAlignment);
    void setGlobalTranslation(Ogre::Vector3 trans);
    void setLocalTranslation(Ogre::Vector3 trans);
    void showOnTop(bool show = true);

    // Get settings
    const Ogre::String& getFontName() const
    {
        return mFontName;
    }
    const Ogre::String& getCaption() const
    {
        return mCaption;
    }
    const Ogre::ColourValue& getColor() const
    {
        return mColor;
    }

    Ogre::Real getCharacterHeight() const
    {
        return mCharHeight;
    }
    Ogre::Real getSpaceWidth() const
    {
        return mSpaceWidth;
    }
    Ogre::Vector3 getGlobalTranslation() const
    {
        return mGlobalTranslation;
    }
    Ogre::Vector3 getLocalTranslation() const
    {
        return mLocalTranslation;
    }
    bool getShowOnTop() const
    {
        return mOnTop;
    }
    Ogre::AxisAlignedBox GetAABB(void)
    {
        return mAABB;
    }

    /******************************** protected methods and overload **************/
protected:

    // from TextObject, create the object
    void _setupGeometry();
    void _updateColors();

    // from MovableObject
    void getWorldTransforms(Ogre::Matrix4 *xform) const;
    Ogre::Real getBoundingRadius(void) const
    {
        return mRadius;
    }

    Ogre::Real getSquaredViewDepth(const Ogre::Camera *cam) const
    {
        return 0;
    }

    const Ogre::Quaternion& getWorldOrientation(void) const;
    const Ogre::Vector3& getWorldPosition(void) const;
    const Ogre::AxisAlignedBox& getBoundingBox(void) const
    {
        return mAABB;
    }

    const Ogre::String& getName(void) const
    {
        return mName;
    }

    const Ogre::String& getMovableType(void) const
    {
        static Ogre::String movType = "TextObject";
        return movType;
    }

    void _notifyCurrentCamera(Ogre::Camera *cam);
    void _updateRenderQueue(Ogre::RenderQueue* queue);

    // from renderable
    void getRenderOperation(Ogre::RenderOperation &op);
    const Ogre::MaterialPtr& getMaterial(void) const
    {
        assert(!mMaterial.isNull());
        return mMaterial;
    }

    const Ogre::LightList& getLights(void) const
    {
        return mLList;
    }

};


}

#endif