Added Geometry class for common geometric tools used everywhere.

[architektonas] / src / vector.cpp

diff --git a/src/vector.cpp b/src/vector.cpp
index 23bd783cf2fcce61dd3c6ab6627972ca7678813a..ac5a2058191e4f7e11d24218ba8085e93d7372d8 100644 (file)
--- a/src/vector.cpp
+++ b/src/vector.cpp
@@ -244,9 +244,9 @@ double Vector::Parameter(Vector v1, Vector v2, Vector p)
        // the perpendicular lies beyond the 1st endpoint. If pp > 1, then the\r
        // perpendicular lies beyond the 2nd endpoint.\r
 \r
-       Vector lineSegment = v2 - v1;\r
+       Vector lineSegment = v1 - v2;\r
        double magnitude = lineSegment.Magnitude();\r
-       Vector pointSegment = p - v1;\r
+       Vector pointSegment = p - v2;\r
        double t = lineSegment.Dot(pointSegment) / (magnitude * magnitude);\r
        return t;\r
 }\r
@@ -256,7 +256,7 @@ double Vector::Parameter(Vector v1, Vector v2, Vector p)
 // (Not sure which is head or tail, or which hand the normal lies)\r
 /*static*/ Vector Vector::Normal(Vector v1, Vector v2)\r
 {\r
-       Vector v = (v2 - v1).Unit();\r
+       Vector v = (v1 - v2).Unit();\r
        return Vector(-v.y, v.x);\r
 }\r
 \r