X-Git-Url: http://git.megacz.com/?p=anneal.git;a=blobdiff_plain;f=src%2Fedu%2Fberkeley%2Fqfat%2Fgeom%2FSegment.java;h=db41142113b610eda284e627ec50d4d512cd250e;hp=576bb7546245f52e7e2a6e7e164987c97fa94391;hb=1cfea6e5d6ca9e75578e97d1fdccf2b306af56c4;hpb=4c6451ef747ae7ffc2aa8955e55254673ac49d16

diff --git a/src/edu/berkeley/qfat/geom/Segment.java b/src/edu/berkeley/qfat/geom/Segment.java
index 576bb75..db41142 100644
--- a/src/edu/berkeley/qfat/geom/Segment.java
+++ b/src/edu/berkeley/qfat/geom/Segment.java
@@ -25,4 +25,18 @@ public class Segment implements HasBoundingBox {
     public float getMaxZ() { return Math.max(p1.z, p2.z); }
     public float getMinZ() { return Math.min(p1.z, p2.z); }
 
+    /** the line passing through both endpoints of this segment */
+    public Line getLine() { return new Line(p1, p2); }
+
+    public float length() { return p1.distance(p2); }
+
+    public double distance(Point p) {
+        Line line = getLine();
+        Point proj = line.getProjection(p);
+        if (proj.distance(p1)+proj.distance(p2) > length())
+            return Math.min(p1.distance(p),
+                            p2.distance(p));
+        return proj.distance(p);
+    }
+
 }