1 files changed, 136 insertions, 0 deletions
diff --git a/src/live_effects/spiro-converters.cpp b/src/live_effects/spiro-converters.cpp
new file mode 100644
index 0000000..411fb65
--- /dev/null
+++ b/src/live_effects/spiro-converters.cpp
@@ -0,0 +1,136 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* Authors:
+ *   Johan Engelen
+ *
+ * Copyright (C) 2010-2012 Authors
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#include "spiro-converters.h"
+#include <2geom/path.h>
+#include "display/curve.h"
+#include <glib.h>
+
+#define SPIRO_SHOW_INFINITE_COORDINATE_CALLS
+#ifdef SPIRO_SHOW_INFINITE_COORDINATE_CALLS
+#  define SPIRO_G_MESSAGE(x) g_message(x)
+#else
+#  define SPIRO_G_MESSAGE(x)
+#endif
+
+namespace Spiro {
+
+void
+ConverterSPCurve::moveto(double x, double y)
+{
+    if ( std::isfinite(x) && std::isfinite(y) ) {
+        _curve.moveto(x, y);
+    } else {
+        SPIRO_G_MESSAGE("Spiro: moveto not finite");
+    }
+}
+
+void
+ConverterSPCurve::lineto(double x, double y, bool close_last)
+{
+    if ( std::isfinite(x) && std::isfinite(y) ) {
+        _curve.lineto(x, y);
+        if (close_last) {
+            _curve.closepath();
+        }
+    } else {
+        SPIRO_G_MESSAGE("Spiro: lineto not finite");
+    }
+}
+
+void
+ConverterSPCurve::quadto(double xm, double ym, double x3, double y3, bool close_last)
+{
+    if ( std::isfinite(xm) && std::isfinite(ym) && std::isfinite(x3) && std::isfinite(y3) ) {
+        _curve.quadto(xm, ym, x3, y3);
+        if (close_last) {
+            _curve.closepath();
+        }
+    } else {
+        SPIRO_G_MESSAGE("Spiro: quadto not finite");
+    }
+}
+
+void
+ConverterSPCurve::curveto(double x1, double y1, double x2, double y2, double x3, double y3, bool close_last)
+{
+    if ( std::isfinite(x1) && std::isfinite(y1) && std::isfinite(x2) && std::isfinite(y2) ) {
+        _curve.curveto(x1, y1, x2, y2, x3, y3);
+        if (close_last) {
+            _curve.closepath();
+        }
+    } else {
+        SPIRO_G_MESSAGE("Spiro: curveto not finite");
+    }
+}
+
+
+ConverterPath::ConverterPath(Geom::Path &path)
+    : _path(path)
+{
+    _path.setStitching(true);
+}
+
+void
+ConverterPath::moveto(double x, double y)
+{
+    if ( std::isfinite(x) && std::isfinite(y) ) {
+        _path.start(Geom::Point(x, y));
+    } else {
+        SPIRO_G_MESSAGE("spiro moveto not finite");
+    }
+}
+
+void
+ConverterPath::lineto(double x, double y, bool close_last)
+{
+    if ( std::isfinite(x) && std::isfinite(y) ) {
+        _path.appendNew<Geom::LineSegment>( Geom::Point(x, y) );
+        _path.close(close_last);
+    } else {
+        SPIRO_G_MESSAGE("spiro lineto not finite");
+    }
+}
+
+void
+ConverterPath::quadto(double xm, double ym, double x3, double y3, bool close_last)
+{
+    if ( std::isfinite(xm) && std::isfinite(ym) && std::isfinite(x3) && std::isfinite(y3) ) {
+        _path.appendNew<Geom::QuadraticBezier>(Geom::Point(xm, ym), Geom::Point(x3, y3));
+        _path.close(close_last);
+    } else {
+        SPIRO_G_MESSAGE("spiro quadto not finite");
+    }
+}
+
+void
+ConverterPath::curveto(double x1, double y1, double x2, double y2, double x3, double y3, bool close_last)
+{
+    if ( std::isfinite(x1) && std::isfinite(y1) && std::isfinite(x2) && std::isfinite(y2) ) {
+        _path.appendNew<Geom::CubicBezier>(Geom::Point(x1, y1), Geom::Point(x2, y2), Geom::Point(x3, y3));
+        _path.close(close_last);
+    } else {
+        SPIRO_G_MESSAGE("spiro curveto not finite");
+    }
+}
+
+} // namespace Spiro
+
+
+
+/*
+  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 :