X-Git-Url: http://git.megacz.com/?p=anneal.git;a=blobdiff_plain;f=src%2Fedu%2Fberkeley%2Fqfat%2Fgeom%2FPlane.java;h=419bb9392a86789a406546575609527c64a70f06;hp=1f79b060792cbe2c34614075dcd606e23122bb6c;hb=5f15a6155bf7fbf2d62b3ab9fd992a54af10a95a;hpb=4c6451ef747ae7ffc2aa8955e55254673ac49d16

diff --git a/src/edu/berkeley/qfat/geom/Plane.java b/src/edu/berkeley/qfat/geom/Plane.java
index 1f79b06..419bb93 100644
--- a/src/edu/berkeley/qfat/geom/Plane.java
+++ b/src/edu/berkeley/qfat/geom/Plane.java
@@ -14,7 +14,7 @@ public class Plane {
     public Point intersect(Plane p1, Plane p2) {
         Plane p3 = this;
         float z = p1.norm.dot(p2.norm.cross(p3.norm));
-        if (Math.abs(z) == 0) return null;  // planes do not intersect at a point
+        if (Math.abs(z) < 0.0001) return null;  // planes do not intersect at a point
         Vec v1 = p2.norm.cross(p3.norm).times(-1 * p1.dvalue);
         Vec v2 = p3.norm.cross(p1.norm).times(-1 * p2.dvalue);
         Vec v3 = p1.norm.cross(p2.norm).times(-1 * p3.dvalue);