CText.h

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/* +------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)            |
   |                          http://www.mrpt.org/                          |
   |                                                                        |
   | Copyright (c) 2005-2017, Individual contributors, see AUTHORS file     |
   | See: http://www.mrpt.org/Authors - All rights reserved.                |
   | Released under BSD License. See details in http://www.mrpt.org/License |
   +------------------------------------------------------------------------+ */

#ifndef opengl_CText_H
#define opengl_CText_H

#include <mrpt/opengl/CRenderizable.h>

namespace mrpt
{
namespace opengl
{
/** A 2D text (bitmap rendering): it always "faces the observer" despite it's at
 * some 3D location.
  *  Use setString and setFont to change the text displayed by this object.
  *
  *  \note All texts appear with the font GLUT_BITMAP_TIMES_ROMAN_10 for now
 * (i.e. setFont is ignored)
  *  \sa opengl::COpenGLScene
  *
  *  <div align="center">
  *  <table border="0" cellspan="4" cellspacing="4" style="border-width: 1px;
 * border-style: solid;">
  *   <tr> <td> mrpt::opengl::CText </td> <td> \image html preview_CText.png
 * </td> </tr>
  *  </table>
  *  </div>
  *
  *  \sa CText3D
  * \ingroup mrpt_opengl_grp
  */
class CText : public CRenderizable
{
        DEFINE_SERIALIZABLE(CText)
   protected:
        std::string m_str;
        std::string m_fontName;
        int m_fontHeight, m_fontWidth;

   public:
        /** Sets the text to display */
        void setString(const std::string& s) { m_str = s; }
        /** Return the current text associated to this label */
        std::string getString() const { return m_str; }
        /** Sets the font (It has no effect yet!) */
        void setFont(const std::string& s, int height)
        {
                m_fontName = s;
                m_fontHeight = height;
        }
        std::string getFont() const { return m_fontName; }
        /** Render */
        void render() const override;

        /** Evaluates the bounding box of this object (including possible children)
         * in the coordinate frame of the object parent. */
        void getBoundingBox(
                mrpt::math::TPoint3D& bb_min,
                mrpt::math::TPoint3D& bb_max) const override;

        /** Class factory  */
        static CText::Ptr Create(const std::string& str);

        /** Constructor */
        CText(const std::string& str = std::string(""));

        /** Private, virtual destructor: only can be deleted from smart pointers */
        virtual ~CText();
};

}  // end namespace

}  // End of namespace

#endif