1 files changed, 92 insertions, 0 deletions
diff --git a/src/live_effects/lpe-line_segment.cpp b/src/live_effects/lpe-line_segment.cpp
new file mode 100644
index 0000000..b0e9c3d
--- /dev/null
+++ b/src/live_effects/lpe-line_segment.cpp
@@ -0,0 +1,92 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** \file
+ * LPE <line_segment> implementation
+ */
+
+/*
+ * Authors:
+ *   Maximilian Albert
+ *
+ * Copyright (C) Maximilian Albert 2008 <maximilian.albert@gmail.com>
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "live_effects/lpe-line_segment.h"
+#include "ui/tools/lpe-tool.h"
+// TODO due to internal breakage in glibmm headers, this must be last:
+#include <glibmm/i18n.h>
+
+namespace Inkscape {
+namespace LivePathEffect {
+
+static const Util::EnumData<EndType> EndTypeData[] = {
+    {END_CLOSED       , N_("Closed"), "closed"},
+    {END_OPEN_INITIAL , N_("Open start"), "open_start"},
+    {END_OPEN_FINAL   , N_("Open end"), "open_end"},
+    {END_OPEN_BOTH    , N_("Open both"), "open_both"},
+};
+static const Util::EnumDataConverter<EndType> EndTypeConverter(EndTypeData, sizeof(EndTypeData)/sizeof(*EndTypeData));
+
+LPELineSegment::LPELineSegment(LivePathEffectObject *lpeobject) :
+    Effect(lpeobject),
+    end_type(_("End type:"), _("Determines on which side the line or line segment is infinite."), "end_type", EndTypeConverter, &wr, this, END_OPEN_BOTH)
+{
+    /* register all your parameters here, so Inkscape knows which parameters this effect has: */
+    registerParameter(&end_type);
+}
+
+LPELineSegment::~LPELineSegment()
+= default;
+
+void
+LPELineSegment::doBeforeEffect (SPLPEItem const* lpeitem)
+{
+    Inkscape::UI::Tools::lpetool_get_limiting_bbox_corners(lpeitem->document, bboxA, bboxB);
+}
+
+Geom::PathVector
+LPELineSegment::doEffect_path (Geom::PathVector const & path_in)
+{
+    Geom::PathVector output;
+
+    A = path_in.initialPoint();
+    B = path_in.finalPoint();
+
+    Geom::Rect dummyRect(bboxA, bboxB);
+    std::optional<Geom::LineSegment> intersection_segment = Geom::Line(A, B).clip(dummyRect);
+
+    if (!intersection_segment) {
+        g_print ("Possible error - no intersection with limiting bounding box.\n");
+        return path_in;
+    }
+
+    if (end_type == END_OPEN_INITIAL || end_type == END_OPEN_BOTH) {
+        A = intersection_segment->initialPoint();
+    }
+
+    if (end_type == END_OPEN_FINAL || end_type == END_OPEN_BOTH) {
+        B = intersection_segment->finalPoint();
+    }
+
+    Geom::Path path(A);
+    path.appendNew<Geom::LineSegment>(B);
+
+    output.push_back(path);
+
+    return output;
+}
+
+} //namespace LivePathEffect
+} /* namespace Inkscape */
+
+/*
+  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 :