First (very limited) version of the 3D box tool; allows for drawing of new boxes in a fixed perspective without any live interaction.

(bzr r3084)

1 files changed, 74 insertions, 0 deletions

diff --git a/src/line-geometry.h b/src/line-geometry.h
new file mode 100644
index 000000000..53f39db39
--- /dev/null
+++ b/src/line-geometry.h
@@ -0,0 +1,74 @@
+/*
+ * Routines for dealing with lines (intersections, etc.)
+ *
+ * Authors:
+ *   Maximilian Albert <Anhalter42@gmx.de>
+ *
+ * Copyright (C) 2007 authors
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifndef SEEN_LINE_GEOMETRY_H
+#define SEEN_LINE_GEOMETRY_H
+
+#include "libnr/nr-point.h"
+#include "libnr/nr-point-fns.h"
+#include "libnr/nr-maybe.h"
+#include "glib.h"
+#include "display/sp-ctrlline.h"
+#include "vanishing-point.h"
+
+#include "document.h"
+#include "ui/view/view.h"
+
+namespace Box3D {
+
+class Line {
+public:
+    Line(NR::Point const &start, NR::Point const &vec, bool is_endpoint = true);
+    Line(Line const &line);
+    Line &operator=(Line const &line);
+    virtual NR::Maybe<NR::Point> intersect(Line const &line);
+    void set_direction(NR::Point const &dir); // FIXME: Can we avoid this explicit assignment?
+    
+    NR::Point closest_to(NR::Point const &pt); // returns the point on the line closest to pt 
+
+    friend inline std::ostream &operator<< (std::ostream &out_file, const Line &in_line);
+	
+private:
+    NR::Point pt;
+    NR::Point v_dir;
+    NR::Point normal;
+    NR::Coord d0;
+};
+
+/*** For testing purposes: Draw a knot/node of specified size and color at the given position ***/
+void create_canvas_point(NR::Point const &pos, double size = 4.0, guint32 rgba = 0xff00007f);
+
+/*** For testing purposes: Draw a line between the specified points ***/
+void create_canvas_line(NR::Point const &p1, NR::Point const &p2, guint32 rgba = 0xff00007f);
+
+
+/** A function to print out the Line.  It just prints out the coordinates of start end end point
+    on the given output stream */
+inline std::ostream &operator<< (std::ostream &out_file, const Line &in_line) {
+    out_file << "Start: " << in_line.pt << "  Direction: " << in_line.v_dir;
+    return out_file;
+}
+
+} // namespace Box3D
+
+
+#endif /* !SEEN_LINE_GEOMETRY_H */
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :