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Added Vector.isCollinearWith(Vector other).

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Also added a test for it.
This commit is contained in:
TomyLobo
2012-01-05 21:07:24 +01:00
parent ef3aeda0dc
commit 450feb6630
2 changed files with 107 additions and 1 deletions
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70
src/test/java/com/sk89q/worldedit/VectorTest.java Normal file
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package com.sk89q.worldedit;
import org.junit.*;
import static org.junit.Assert.*;
public class VectorTest {
@Test
public void collinearityTest() {
assertCollinear(0,0,0, 0,0,0);
assertCollinear(0,0,0, 1,0,0);
assertCollinear(0,0,0, 0,1,0);
assertCollinear(0,0,0, 0,0,1);
assertCollinear(1,0,0, 0,0,0);
assertCollinear(0,1,0, 0,0,0);
assertCollinear(0,0,1, 0,0,0);
assertCollinear(1,0,0, 2,0,0);
assertNotCollinear(1,0,0, 0,1,0);
assertNotCollinear(2,2,2, 8,4,4);
assertCollinear(8,2,2, 8,2,2);
assertNotCollinear(4,2,4, 4,4,4);
assertNotCollinear(1,1,2, 4,8,2);
assertNotCollinear(4,1,8, 1,4,4);
assertCollinear(2,4,2, 1,2,1);
assertNotCollinear(2,2,4, 1,2,1);
assertNotCollinear(4,4,1, 4,4,4);
assertNotCollinear(4,1,4, 1,8,2);
assertCollinear(8,8,4, 4,4,2);
assertNotCollinear(2,1,8, 1,1,2);
assertNotCollinear(8,1,2, 2,1,2);
assertNotCollinear(4,4,8, 2,2,8);
assertNotCollinear(8,4,8, 1,4,8);
assertNotCollinear(2,2,2, 1,4,2);
assertNotCollinear(1,1,2, 8,8,2);
assertNotCollinear(4,4,8, 8,4,4);
assertNotCollinear(1,8,2, 4,4,4);
assertNotCollinear(8,4,2, 1,2,2);
assertNotCollinear(1,8,2, 8,1,4);
assertNotCollinear(4,8,1, 4,8,8);
assertNotCollinear(8,1,8, 8,8,8);
assertNotCollinear(8,4,1, 4,2,2);
assertNotCollinear(4,8,1, 4,2,1);
assertNotCollinear(8,8,1, 2,4,2);
assertCollinear(8,1,4, 8,1,4);
assertNotCollinear(4,1,1, 2,4,8);
assertNotCollinear(4,2,8, 1,4,1);
assertNotCollinear(1,8,2, 1,8,1);
assertNotCollinear(1,1,2, 4,2,2);
}
private void assertCollinear(double ax, double ay, double az, double bx, double by, double bz) {
final Vector a = new Vector(ax,ay,az);
final Vector b = new Vector(bx,by,bz);
assertTrue(a.isCollinearWith(b));
assertTrue(b.isCollinearWith(a));
assertTrue(a.multiply(-1).isCollinearWith(b));
assertTrue(a.isCollinearWith(b.multiply(-1)));
}
private void assertNotCollinear(double ax, double ay, double az, double bx, double by, double bz) {
final Vector a = new Vector(ax,ay,az);
final Vector b = new Vector(bx,by,bz);
assertFalse(a.isCollinearWith(b));
assertFalse(b.isCollinearWith(a));
assertFalse(a.multiply(-1).isCollinearWith(b));
assertFalse(a.isCollinearWith(b.multiply(-1)));
}
}