From cf233ff5bbc68bd598ef4b81c7b4063548f2eff9 Mon Sep 17 00:00:00 2001
From: Maximilian Albert <maximilian.albert@gmail.com>
Date: Thu, 21 Jun 2007 13:01:57 +0000
Subject: 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)
---
 src/perspective-line.h | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 src/perspective-line.h

(limited to 'src/perspective-line.h')

diff --git a/src/perspective-line.h b/src/perspective-line.h
new file mode 100644
index 000000000..a1c61c522
--- /dev/null
+++ b/src/perspective-line.h
@@ -0,0 +1,63 @@
+/*
+ * Perspective line for 3D perspectives
+ *
+ * Authors:
+ *   Maximilian Albert <Anhalter42@gmx.de>
+ *
+ * Copyright (C) 2007 authors
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifndef SEEN_PERSPECTIVE_LINE_H
+#define SEEN_PERSPECTIVE_LINE_H
+
+#include "vanishing-point.h"
+#include "box3d-context.h" 
+#include <glib.h>
+
+namespace Box3D {
+
+class PerspectiveLine : public Box3D::Line {
+public:
+    /** 
+     * Create a perspective line starting at 'pt' and pointing in the direction of the
+     * vanishing point corresponding to 'axis'. If the VP has style VP_FINITE then the
+     * PL runs through it; otherwise it has the direction specified by the v_dir vector
+     * of the VP.
+     */
+    PerspectiveLine (NR::Point const &pt, PerspDir const axis,
+                     Perspective3D *perspective = SP3DBoxContext::current_perspective);
+    NR::Maybe<NR::Point> intersect (Line const &line); // FIXME: Can we make this return only a NR::Point to remove the extra method meet()?
+    NR::Point meet (Line const &line);
+	
+private:
+    PerspDir vp_dir; // direction of the associated VP
+    Perspective3D *persp;
+};
+
+
+} // namespace Box3D
+
+
+/** A function to print out the VanishingPoint (prints the coordinates) **/
+/***
+inline std::ostream &operator<< (std::ostream &out_file, const VanishingPoint &vp) {
+    out_file << vp;
+    return out_file;
+}
+***/
+
+
+#endif /* !SEEN_PERSPECTIVE_LINE_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 :
-- 
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