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Fix problem in new Plane code

This commit is contained in:
Karl David Wright 2022-11-21 19:15:10 -05:00
parent 20fcd0b757
commit d85c35e4d7
1 changed files with 8 additions and 1 deletions
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9
lucene/spatial3d/src/java/org/apache/lucene/spatial3d/geom/Plane.java
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@ -232,7 +232,14 @@ public class Plane extends Vector {
A1 = (-C1 * zDiff - yDiff) / xDiff;
} else {
// B1choice is C-A, so numerator is B-C
A1 = (B0 * xDiff - C0 * yDiff) / B1choice;
// A1 * xDiff + 1.0 * yDiff + C1 * zDiff = 0
// C1 * zDiff = -A1 * xDiff - 1.0 * yDiff
// C1 = (-A1 * xDiff - yDiff) / zDiff
// A0 * A1 + B0 * 1.0 + C0 * (-A1 * xDiff - yDiff) / zDiff = 0
// A1 * A0 * zDiff - A1 * C0 * xDiff + B0 * zDiff - C0 * yDiff = 0
// A1 * A0 * zDiff - A1 * C0 * xDiff = C0 * yDiff - B0 * zDiff
// A1 = (C0 * yDiff - B0 * zDiff) / (A0 * zDiff - C0 * xDiff)
A1 = (B0 * zDiff - C0 * yDiff) / B1choice;
C1 = (-A1 * xDiff - yDiff) / zDiff;
}
} else if (Math.abs(C1choice) >= Math.abs(A1choice)