CText3D.cpp

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/* +------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)            |
   |                          http://www.mrpt.org/                          |
   |                                                                        |
   | Copyright (c) 2005-2018, 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 |
   +------------------------------------------------------------------------+ */

#include "opengl-precomp.h"  // Precompiled header

#include <mrpt/opengl/CText3D.h>
#include <mrpt/serialization/CArchive.h>
#include <mrpt/opengl/gl_utils.h>
#include "opengl_internals.h"

using namespace mrpt;
using namespace mrpt::opengl;

using namespace std;

IMPLEMENTS_SERIALIZABLE(CText3D, CRenderizableDisplayList, mrpt::opengl)

CText3D::Ptr CText3D::Create(
    const std::string& str, const std::string& fontName, const double scale,
    const mrpt::opengl::TOpenGLFontStyle text_style, const double text_spacing,
    const double text_kerning)
{
    return CText3D::Ptr(
        new CText3D(
            str, fontName, scale, text_style, text_spacing, text_kerning));
}
/*---------------------------------------------------------------
                            Constructor
  ---------------------------------------------------------------*/
CText3D::CText3D(
    const std::string& str, const std::string& fontName, const double scale,
    const mrpt::opengl::TOpenGLFontStyle text_style, const double text_spacing,
    const double text_kerning)
    : m_str(str),
      m_fontName(fontName),
      m_text_style(text_style),
      m_text_spacing(text_spacing),
      m_text_kerning(text_kerning)
{
    this->setScale(scale);
}

/*---------------------------------------------------------------
                            Destructor
  ---------------------------------------------------------------*/
CText3D::~CText3D() {}
/*---------------------------------------------------------------
                            render
  ---------------------------------------------------------------*/
void CText3D::render_dl() const
{
#if MRPT_HAS_OPENGL_GLUT
    glColor4ub(m_color.R, m_color.G, m_color.B, m_color.A);

    mrpt::opengl::gl_utils::glSetFont(m_fontName);
    mrpt::opengl::gl_utils::glDrawText(
        m_str,
        1.0,  // Scale
        m_text_style, m_text_spacing, m_text_kerning);

#endif
}

uint8_t CText3D::serializeGetVersion() const { return 0; }
void CText3D::serializeTo(mrpt::serialization::CArchive& out) const
{
    writeToStreamRender(out);
    out << m_str << m_fontName << (uint32_t)m_text_style << m_text_spacing
        << m_text_kerning;
}

void CText3D::serializeFrom(mrpt::serialization::CArchive& in, uint8_t version)
{
    switch (version)
    {
        case 0:
        {
            readFromStreamRender(in);

            uint32_t i;
            in >> m_str >> m_fontName >> i >> m_text_spacing >> m_text_kerning;

            m_text_style = TOpenGLFontStyle(i);
        }
        break;
        default:
            MRPT_THROW_UNKNOWN_SERIALIZATION_VERSION(version)
    };
    CRenderizableDisplayList::notifyChange();
}

void CText3D::getBoundingBox(
    mrpt::math::TPoint3D& bb_min, mrpt::math::TPoint3D& bb_max) const
{
    bb_min.x = 0;
    bb_min.y = 0;
    bb_min.z = 0;

    bb_max.x = m_str.size() * m_scale_x;
    bb_max.y = 1;
    bb_max.z = 0;

    // Convert to coordinates of my parent:
    m_pose.composePoint(bb_min, bb_min);
    m_pose.composePoint(bb_max, bb_max);
}