OrcaSlicer/src/slic3r/GUI/TextLines.hpp

#ifndef slic3r_TextLines_hpp_
#define slic3r_TextLines_hpp_

#include <vector>
#include <libslic3r/Polygon.hpp>
#include <libslic3r/Point.hpp>
#include <libslic3r/Emboss.hpp>
#include "slic3r/GUI/GLModel.hpp"
#include "slic3r/Utils/EmbossStyleManager.hpp"

namespace Slic3r {
class ModelVolume;
typedef std::vector<ModelVolume *> ModelVolumePtrs;
}

namespace Slic3r::GUI {
class TextLinesModel
{
public:
    /// <summary>
    /// Initialize model and lines
    /// </summary>
    /// <param name="text_tr">Transformation of text volume inside object (aka inside of instance)</param>
    /// <param name="volumes_to_slice">Vector of volumes to be sliced</param>
    /// <param name="style_manager">Contain Font file, size and align</param>
    /// <param name="count_lines">Count lines of embossed text(for veritcal alignment)</param>
    void init(const Transform3d &text_tr, const ModelVolumePtrs &volumes_to_slice, /*const*/ Emboss::StyleManager &style_manager, unsigned count_lines);

    void render(const Transform3d &text_world);

    bool is_init() const { return m_model.is_initialized(); }
    void reset() { m_model.reset(); m_lines.clear(); }
    const Slic3r::Emboss::TextLines &get_lines() const { return m_lines; }

    static double calc_line_height_in_mm(const Slic3r::Emboss::FontFile& ff, const FontProp& fp); // return lineheight in mm
private:
    Slic3r::Emboss::TextLines m_lines;

    // Keep model for visualization text lines
    GLModel m_model;

    // Used to move slice (text line) on place where is approx vertical center of text
    // When copy value const double ASCENT_CENTER from Emboss.cpp and Vertical align is center than
    // text line will cross object center 
    const double ascent_ratio_offset = 1/3.;
};

} // namespace Slic3r::GUI
#endif // slic3r_TextLines_hpp_