MovableText.hh

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/*
 * Copyright 2012 Nate Koenig
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
*/
/* Desc: Middleman between OGRE and Gazebo
 * Author: indepedentCreations@gmail.com
 * Date: 13 Feb 2006
 */

#ifndef _MOVABLETEXT_HH_
#define _MOVABLETEXT_HH_

#include <string>

// TODO: remove this line
#include "rendering/ogre_gazebo.h"

#include "common/CommonTypes.hh"
#include "common/Color.hh"
#include "math/MathTypes.hh"

namespace boost
{
  class recursive_mutex;
}

namespace gazebo
{
  namespace rendering
  {

    class MovableText : public Ogre::MovableObject, public Ogre::Renderable
    {
      public: enum HorizAlign {
                H_LEFT,
                H_CENTER
              };

      public: enum VertAlign {
                V_BELOW,
                V_ABOVE
              };

      public: MovableText();

      public: virtual ~MovableText();

      public: void Load(const std::string &_name,
                        const std::string &_text,
                        const std::string &_fontName = "Arial",
                        float _charHeight = 1.0,
                        const common::Color &_color = common::Color::White);

      public: void SetFontName(const std::string &_font);

      public: const std::string &GetFont() const;

      public: void SetText(const std::string &_text);

      public: const std::string &GetText() const;

      public: void SetColor(const common::Color &_color);

      public: const common::Color &GetColor() const;

      public: void SetCharHeight(float _height);

      public: float GetCharHeight() const;

      public:void SetSpaceWidth(float _width);

      public: float GetSpaceWidth() const;

      public: void SetTextAlignment(const HorizAlign &_hAlign,
                                    const VertAlign &_vAlign);

      public: void SetBaseline(float _height);

      public: float GetBaseline() const;

      public: void SetShowOnTop(bool _show);

      public: bool GetShowOnTop() const;

      public: math::Box GetAABB();

      public: void Update();

      public: virtual void visitRenderables(Ogre::Renderable::Visitor* _visitor,
                  bool _debug = false);

      protected: void _setupGeometry();

      protected: void _updateColors();

      protected: void getWorldTransforms(Ogre::Matrix4 *xform) const;

      protected: float getBoundingRadius() const;

      protected: float getSquaredViewDepth(const Ogre::Camera *cam) const;

      private: const Ogre::Quaternion &getWorldOrientation(void) const;
      private: const Ogre::Vector3 &getWorldPosition(void) const;
      private: const Ogre::AxisAlignedBox &getBoundingBox(void) const;
      private: const Ogre::String &getMovableType() const;

      private: void _notifyCurrentCamera(Ogre::Camera *cam);

      private: void _updateRenderQueue(Ogre::RenderQueue* queue);

      protected: void getRenderOperation(Ogre::RenderOperation &op);

      protected: const Ogre::MaterialPtr &getMaterial(void) const;

      protected: const Ogre::LightList &getLights(void) const;

      private: std::string fontName;
      private: std::string text;

      private: common::Color color;
      private: Ogre::RenderOperation renderOp;
      private: Ogre::AxisAlignedBox *aabb;
      private: Ogre::LightList lightList;

      private: float charHeight;

      private: bool needUpdate;

      private: float radius;

      private: Ogre::Camera *camera;
      private: Ogre::RenderWindow *renderWindow;
      private: Ogre::Font *font;
      private: Ogre::MaterialPtr material;
      private: Ogre::MaterialPtr backgroundMaterial;

      private: float viewportAspectCoef;
      private: float spaceWidth;
      private: bool updateColors;
      private: VertAlign vertAlign;
      private: HorizAlign horizAlign;
      private: bool onTop;
      private: float baseline;

      private: bool dirty;

      private: boost::recursive_mutex *mutex;
      private: Ogre::SimpleRenderable *renderable;
    };
  }
}
#endif