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simplified signature of intersection method 

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1157748 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Luc Maisonobe 2011-08-15 09:32:32 +00:00
parent e7df350a55
commit 3e6c847030
1 changed files with 6 additions and 7 deletions
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13
src/main/java/org/apache/commons/math/geometry/euclidean/twod/Line.java
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@ -104,7 +104,7 @@ public class Line implements Hyperplane<Euclidean2D>, Embedding<Euclidean2D, Euc
} }
/** Copy constructor. /** Copy constructor.
* <p>The created instance is completely independant from the * <p>The created instance is completely independent from the
* original instance, it is a deep copy.</p> * original instance, it is a deep copy.</p>
* @param line line to copy * @param line line to copy
*/ */
@ -192,16 +192,15 @@ public class Line implements Hyperplane<Euclidean2D>, Embedding<Euclidean2D, Euc
/** Get the intersection point of the instance and another line. /** Get the intersection point of the instance and another line.
* @param other other line * @param other other line
* @return intersection point of the instance and the other line * @return intersection point of the instance and the other line
* (really a {@link Vector2D Vector2D} instance) * or null if there are no intersection points
*/ */
public Vector2D intersection(final Hyperplane<Euclidean2D> other) { public Vector2D intersection(final Line other) {
final Line otherL = (Line) other; final double d = sin * other.cos - other.sin * cos;
final double d = sin * otherL.cos - otherL.sin * cos;
if (FastMath.abs(d) < 1.0e-10) { if (FastMath.abs(d) < 1.0e-10) {
return null; return null;
} }
return new Vector2D((cos * otherL.originOffset - otherL.cos * originOffset) / d, return new Vector2D((cos * other.originOffset - other.cos * originOffset) / d,
(sin * otherL.originOffset - otherL.sin * originOffset) / d); (sin * other.originOffset - other.sin * originOffset) / d);
} }
/** {@inheritDoc} */ /** {@inheritDoc} */