sp-ellipse.h

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// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef SEEN_SP_ELLIPSE_H
#define SEEN_SP_ELLIPSE_H
 
#include "svg/svg-length.h"
#include "sp-shape.h"
 
enum GenericEllipseType {
    SP_GENERIC_ELLIPSE_UNDEFINED, // FIXME shouldn't exist
    SP_GENERIC_ELLIPSE_ARC,
    SP_GENERIC_ELLIPSE_CIRCLE,
    SP_GENERIC_ELLIPSE_ELLIPSE
};
 
enum GenericEllipseArcType {
    SP_GENERIC_ELLIPSE_ARC_TYPE_SLICE, // Default
    SP_GENERIC_ELLIPSE_ARC_TYPE_ARC,
    SP_GENERIC_ELLIPSE_ARC_TYPE_CHORD
};
 
class SPGenericEllipse final : public SPShape {
public:
    SPGenericEllipse();
    ~SPGenericEllipse() override;
    int tag() const override { return tag_of<decltype(*this)>; }
 
    // Regardless of type, the ellipse/circle/arc is stored
    // internally with these variables. (Circle radius is rx).
    SVGLength cx;
    SVGLength cy;
    SVGLength rx;
    SVGLength ry;
 
    // Return slice, chord, or arc.
    GenericEllipseArcType arcType() { return arc_type; };
    void setArcType(GenericEllipseArcType type) { arc_type = type; };
 
    double start, end;
    GenericEllipseType type;
    GenericEllipseArcType arc_type;
 
    void tag_name_changed(gchar const* oldname, gchar const* newname) override;
 
    void build(SPDocument *document, Inkscape::XML::Node *repr) override;
 
    void set(SPAttr key, char const *value) override;
    void update(SPCtx *ctx, unsigned int flags) override;
 
    Inkscape::XML::Node *write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, unsigned int flags) override;
    const char *typeName() const override;
    const char *displayName() const override;
 
    void set_shape() override;
    void update_patheffect(bool write) override;
    Geom::Affine set_transform(Geom::Affine const &xform) override;
 
    void snappoints(std::vector<Inkscape::SnapCandidatePoint> &p, Inkscape::SnapPreferences const *snapprefs) const override;
 
    void modified(unsigned int flags) override;
 
    void normalize();
 
    Geom::Point getPointAtAngle(double arg) const;
 
    bool set_elliptical_path_attribute(Inkscape::XML::Node *repr);
    void position_set(double x, double y, double rx, double ry);
 
    double getVisibleRx() const;
    void setVisibleRx(double rx);
 
    double getVisibleRy() const;
    void setVisibleRy(double ry);
 
    bool is_whole() const { return !_isSlice(); }
 
protected:
    bool _isSlice() const;
};
 
#endif
 
/*
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  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
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  End:
*/
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