1 files changed, 130 insertions, 0 deletions
diff --git a/src/object/persp3d.h b/src/object/persp3d.h
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+++ b/src/object/persp3d.h
@@ -0,0 +1,130 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_PERSP3D_H
+#define SEEN_PERSP3D_H
+
+/*
+ * Implementation of 3D perspectives as SPObjects
+ *
+ * Authors:
+ *   Maximilian Albert <Anhalter42@gmx.de>
+ *
+ * Copyright (C) 2007  Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#define SP_PERSP3D(obj) (dynamic_cast<Persp3D*>((SPObject*)obj))
+#define SP_IS_PERSP3D(obj) (dynamic_cast<const Persp3D*>((SPObject*)obj) != NULL)
+
+#include <list>
+#include <map>
+#include <vector>
+
+#include "transf_mat_3x4.h"
+#include "document.h"
+#include "inkscape.h" // for SP_ACTIVE_DOCUMENT
+
+#include "sp-object.h"
+
+class SPBox3D;
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+class Box3dTool;
+
+}
+}
+}
+
+
+class Persp3DImpl {
+public:
+    Persp3DImpl();
+
+//private:
+    Proj::TransfMat3x4 tmat;
+
+    // Also write the list of boxes into the xml repr and vice versa link boxes to their persp3d?
+    std::vector<SPBox3D *> boxes;
+    SPDocument *document;
+
+    // for debugging only
+    int my_counter;
+
+//    friend class Persp3D;
+};
+
+class Persp3D : public SPObject {
+public:
+	Persp3D();
+	~Persp3D() override;
+
+    Persp3DImpl *perspective_impl;
+
+protected:
+	void build(SPDocument* doc, Inkscape::XML::Node* repr) override;
+	void release() override;
+
+	void set(SPAttr key, char const* value) override;
+
+	void update(SPCtx* ctx, unsigned int flags) override;
+
+	Inkscape::XML::Node* write(Inkscape::XML::Document* doc, Inkscape::XML::Node* repr, unsigned int flags) override;
+
+
+public:
+    // FIXME: Make more of these inline!
+    static Persp3D * get_from_repr (Inkscape::XML::Node *repr) {
+        return SP_PERSP3D(SP_ACTIVE_DOCUMENT->getObjectByRepr(repr));
+    }
+    Proj::Pt2 get_VP (Proj::Axis axis) const {
+        return perspective_impl->tmat.column(axis);
+    }
+    Geom::Point get_PL_dir_from_pt (Geom::Point const &pt, Proj::Axis axis) const; // convenience wrapper around the following two
+    Geom::Point get_finite_dir (Geom::Point const &pt, Proj::Axis axis) const;
+    Geom::Point get_infinite_dir (Proj::Axis axis) const;
+    double get_infinite_angle (Proj::Axis axis) const;
+    static bool VP_is_finite (Persp3DImpl *persp_impl, Proj::Axis axis);
+    void toggle_VP (Proj::Axis axis, bool set_undo = true);
+    static void toggle_VPs (std::list<Persp3D *>, Proj::Axis axis);
+    void set_VP_state (Proj::Axis axis, Proj::VPState state);
+    void rotate_VP (Proj::Axis axis, double angle, bool alt_pressed); // angle is in degrees
+    void apply_affine_transformation (Geom::Affine const &xform);
+
+    void add_box (SPBox3D *box);
+    void remove_box (SPBox3D *box);
+    bool has_box (SPBox3D *box) const;
+
+    void update_box_displays ();
+    void update_box_reprs ();
+    void update_z_orders ();
+    unsigned int num_boxes () const { return perspective_impl->boxes.size(); }
+    std::list<SPBox3D *> list_of_boxes() const;
+
+    bool perspectives_coincide(Persp3D const *rhs) const;
+    void absorb(Persp3D *persp2);
+
+    static Persp3D * create_xml_element (SPDocument *document);
+    static Persp3D * document_first_persp (SPDocument *document);
+
+    bool has_all_boxes_in_selection (Inkscape::ObjectSet *set) const;
+
+    void print_debugging_info () const;
+    static void print_debugging_info_all(SPDocument *doc);
+    static void print_all_selected();
+};
+
+#endif /* __PERSP3D_H__ */
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :