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It helps to get the math right

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This commit is contained in:
Tim Conkling
2011-09-02 13:43:55 -07:00
committed by Michael Bayne
parent 1916a7e8e7
commit c82f38fa97
1 changed files with 4 additions and 3 deletions
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src/main/java/pythagoras/f/AbstractCircle.java
+4 -3
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@@ -14,17 +14,18 @@ public abstract class AbstractCircle implements ICircle
{ {
@Override // from ICircle @Override // from ICircle
public boolean intersects (ICircle c) { public boolean intersects (ICircle c) {
return Points.distanceSq(x(), y(), c.x(), c.y()) < (radius() + c.radius()); float maxDist = radius() + c.radius();
return Points.distanceSq(x(), y(), c.x(), c.y()) < (maxDist * maxDist);
} }
@Override // from ICircle @Override // from ICircle
public boolean contains (IPoint p) { public boolean contains (IPoint p) {
return Points.distanceSq(x(), y(), p.x(), p.y()) < radius(); return Points.distanceSq(x(), y(), p.x(), p.y()) < radius() * radius();
} }
@Override // from ICircle @Override // from ICircle
public boolean contains (float x, float y) { public boolean contains (float x, float y) {
return Points.distanceSq(x(), y(), x, y) < radius(); return Points.distanceSq(x(), y(), x, y) < radius() * radius();
} }
@Override // from ICircle @Override // from ICircle