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package org.bukkit.util;
import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;
import java.util.Map;
import org.bukkit.Location;
import org.bukkit.block.BlockFace;
import org.junit.Test;
public class BoundingBoxTest {
private static final double delta = 1.0 / 1000000;
@Test
public void testConstruction() {
BoundingBox expected = new BoundingBox(-1, -1, -1, 1, 2, 3);
assertThat(expected.getMin(), is(new Vector(-1, -1, -1)));
assertThat(expected.getMax(), is(new Vector(1, 2, 3)));
assertThat(expected.getCenter(), is(new Vector(0.0D, 0.5D, 1.0D)));
assertThat(expected.getWidthX(), is(2.0D));
assertThat(expected.getHeight(), is(3.0D));
assertThat(expected.getWidthZ(), is(4.0D));
assertThat(expected.getVolume(), is(24.0D));
assertThat(BoundingBox.of(new Vector(-1, -1, -1), new Vector(1, 2, 3)), is(expected));
assertThat(BoundingBox.of(new Vector(1, 2, 3), new Vector(-1, -1, -1)), is(expected));
assertThat(BoundingBox.of(new Location(null, -1, -1, -1), new Location(null, 1, 2, 3)), is(expected));
assertThat(BoundingBox.of(new Vector(0.0D, 0.5D, 1.0D), 1.0D, 1.5D, 2.0D), is(expected));
assertThat(BoundingBox.of(new Location(null, 0.0D, 0.5D, 1.0D), 1.0D, 1.5D, 2.0D), is(expected));
}
@Test
public void testContains() {
BoundingBox aabb = new BoundingBox(-1, -1, -1, 1, 2, 3);
assertThat(aabb.contains(-0.5D, 0.0D, 0.5D), is(true));
assertThat(aabb.contains(-1.0D, -1.0D, -1.0D), is(true));
assertThat(aabb.contains(1.0D, 2.0D, 3.0D), is(false));
assertThat(aabb.contains(-1.0D, 1.0D, 4.0D), is(false));
assertThat(aabb.contains(new Vector(-0.5D, 0.0D, 0.5D)), is(true));
assertThat(aabb.contains(new BoundingBox(-0.5D, -0.5D, -0.5D, 0.5D, 1.0D, 2.0D)), is(true));
assertThat(aabb.contains(aabb), is(true));
assertThat(aabb.contains(new BoundingBox(-1, -1, -1, 1, 1, 3)), is(true));
assertThat(aabb.contains(new BoundingBox(-2, -1, -1, 1, 2, 3)), is(false));
assertThat(aabb.contains(new Vector(-0.5D, -0.5D, -0.5D), new Vector(0.5D, 1.0D, 2.0D)), is(true));
}
@Test
public void testOverlaps() {
BoundingBox aabb = new BoundingBox(-1, -1, -1, 1, 2, 3);
assertThat(aabb.contains(aabb), is(true));
assertThat(aabb.overlaps(new BoundingBox(-2, -2, -2, 0, 0, 0)), is(true));
assertThat(aabb.overlaps(new BoundingBox(0.5D, 1.5D, 2.5D, 1, 2, 3)), is(true));
assertThat(aabb.overlaps(new BoundingBox(0.5D, 1.5D, 2.5D, 2, 3, 4)), is(true));
assertThat(aabb.overlaps(new BoundingBox(-2, -2, -2, -1, -1, -1)), is(false));
assertThat(aabb.overlaps(new BoundingBox(1, 2, 3, 2, 3, 4)), is(false));
assertThat(aabb.overlaps(new Vector(0.5D, 1.5D, 2.5D), new Vector(1, 2, 3)), is(true));
}
@Test
public void testDegenerate() {
BoundingBox aabb = new BoundingBox(0, 0, 0, 0, 0, 0);
assertThat(aabb.getWidthX(), is(0.0D));
assertThat(aabb.getHeight(), is(0.0D));
assertThat(aabb.getWidthZ(), is(0.0D));
assertThat(aabb.getVolume(), is(0.0D));
}
@Test
public void testShift() {
BoundingBox aabb = new BoundingBox(0, 0, 0, 1, 1, 1);
assertThat(aabb.clone().shift(1, 2, 3), is(new BoundingBox(1, 2, 3, 2, 3, 4)));
assertThat(aabb.clone().shift(-1, -2, -3), is(new BoundingBox(-1, -2, -3, 0, -1, -2)));
assertThat(aabb.clone().shift(new Vector(1, 2, 3)), is(new BoundingBox(1, 2, 3, 2, 3, 4)));
assertThat(aabb.clone().shift(new Location(null, 1, 2, 3)), is(new BoundingBox(1, 2, 3, 2, 3, 4)));
}
@Test
public void testUnion() {
BoundingBox aabb1 = new BoundingBox(0, 0, 0, 1, 1, 1);
assertThat(aabb1.clone().union(new BoundingBox(-2, -2, -2, -1, -1, -1)), is(new BoundingBox(-2, -2, -2, 1, 1, 1)));
assertThat(aabb1.clone().union(1, 2, 3), is(new BoundingBox(0, 0, 0, 1, 2, 3)));
assertThat(aabb1.clone().union(new Vector(1, 2, 3)), is(new BoundingBox(0, 0, 0, 1, 2, 3)));
assertThat(aabb1.clone().union(new Location(null, 1, 2, 3)), is(new BoundingBox(0, 0, 0, 1, 2, 3)));
}
@Test
public void testIntersection() {
BoundingBox aabb = new BoundingBox(-1, -1, -1, 1, 2, 3);
assertThat(aabb.clone().intersection(new BoundingBox(-2, -2, -2, 4, 4, 4)), is(aabb));
assertThat(aabb.clone().intersection(new BoundingBox(-2, -2, -2, 1, 1, 1)), is(new BoundingBox(-1, -1, -1, 1, 1, 1)));
}
@Test
public void testExpansion() {
BoundingBox aabb = new BoundingBox(0, 0, 0, 2, 2, 2);
assertThat(aabb.clone().expand(1, 2, 3, 1, 2, 3), is(new BoundingBox(-1, -2, -3, 3, 4, 5)));
assertThat(aabb.clone().expand(-1, -2, -3, 1, 2, 3), is(new BoundingBox(1, 2, 3, 3, 4, 5)));
assertThat(aabb.clone().expand(1, 2, 3, -1, -2, -3), is(new BoundingBox(-1, -2, -3, 1, 0, -1)));
assertThat(aabb.clone().expand(-1, -2, -3, -0.5D, -0.5, -3), is(new BoundingBox(1, 1.5D, 1, 1.5D, 1.5D, 1)));
assertThat(aabb.clone().expand(1, 2, 3), is(new BoundingBox(-1, -2, -3, 3, 4, 5)));
assertThat(aabb.clone().expand(-0.1, -0.5, -2), is(new BoundingBox(0.1D, 0.5D, 1, 1.9D, 1.5D, 1)));
assertThat(aabb.clone().expand(new Vector(1, 2, 3)), is(new BoundingBox(-1, -2, -3, 3, 4, 5)));
assertThat(aabb.clone().expand(1), is(new BoundingBox(-1, -1, -1, 3, 3, 3)));
assertThat(aabb.clone().expand(-0.5D), is(new BoundingBox(0.5D, 0.5D, 0.5D, 1.5D, 1.5D, 1.5D)));
assertThat(aabb.clone().expand(1, 0, 0, 0.5D), is(new BoundingBox(0, 0, 0, 2.5D, 2, 2)));
assertThat(aabb.clone().expand(1, 0, 0, -0.5D), is(new BoundingBox(0, 0, 0, 1.5D, 2, 2)));
assertThat(aabb.clone().expand(-1, 0, 0, 0.5D), is(new BoundingBox(-0.5D, 0, 0, 2, 2, 2)));
assertThat(aabb.clone().expand(-1, 0, 0, -0.5D), is(new BoundingBox(0.5D, 0, 0, 2, 2, 2)));
assertThat(aabb.clone().expand(0, 1, 0, 0.5D), is(new BoundingBox(0, 0, 0, 2, 2.5D, 2)));
assertThat(aabb.clone().expand(0, 1, 0, -0.5D), is(new BoundingBox(0, 0, 0, 2, 1.5D, 2)));
assertThat(aabb.clone().expand(0, -1, 0, 0.5D), is(new BoundingBox(0, -0.5D, 0, 2, 2, 2)));
assertThat(aabb.clone().expand(0, -1, 0, -0.5D), is(new BoundingBox(0, 0.5D, 0, 2, 2, 2)));
assertThat(aabb.clone().expand(0, 0, 1, 0.5D), is(new BoundingBox(0, 0, 0, 2, 2, 2.5D)));
assertThat(aabb.clone().expand(0, 0, 1, -0.5D), is(new BoundingBox(0, 0, 0, 2, 2, 1.5D)));
assertThat(aabb.clone().expand(0, 0, -1, 0.5D), is(new BoundingBox(0, 0, -0.5D, 2, 2, 2)));
assertThat(aabb.clone().expand(0, 0, -1, -0.5D), is(new BoundingBox(0, 0, 0.5D, 2, 2, 2)));
assertThat(aabb.clone().expand(new Vector(1, 0, 0), 0.5D), is(new BoundingBox(0, 0, 0, 2.5D, 2, 2)));
assertThat(aabb.clone().expand(BlockFace.EAST, 0.5D), is(new BoundingBox(0, 0, 0, 2.5D, 2, 2)));
assertThat(aabb.clone().expand(BlockFace.NORTH_NORTH_WEST, 1.0D), is(aabb.clone().expand(BlockFace.NORTH_NORTH_WEST.getDirection(), 1.0D)));
assertThat(aabb.clone().expand(BlockFace.SELF, 1.0D), is(aabb));
BoundingBox expanded = aabb.clone().expand(BlockFace.NORTH_WEST, 1.0D);
assertThat(expanded.getWidthX(), is(closeTo(aabb.getWidthX() + Math.sqrt(0.5D), delta)));
assertThat(expanded.getWidthZ(), is(closeTo(aabb.getWidthZ() + Math.sqrt(0.5D), delta)));
assertThat(expanded.getHeight(), is(aabb.getHeight()));
assertThat(aabb.clone().expandDirectional(1, 2, 3), is(new BoundingBox(0, 0, 0, 3, 4, 5)));
assertThat(aabb.clone().expandDirectional(-1, -2, -3), is(new BoundingBox(-1, -2, -3, 2, 2, 2)));
assertThat(aabb.clone().expandDirectional(new Vector(1, 2, 3)), is(new BoundingBox(0, 0, 0, 3, 4, 5)));
}
@Test
public void testRayTrace() {
BoundingBox aabb = new BoundingBox(-1, -1, -1, 1, 1, 1);
assertThat(aabb.rayTrace(new Vector(-2, 0, 0), new Vector(1, 0, 0), 10),
is(new RayTraceResult(new Vector(-1, 0, 0), BlockFace.WEST)));
assertThat(aabb.rayTrace(new Vector(2, 0, 0), new Vector(-1, 0, 0), 10),
is(new RayTraceResult(new Vector(1, 0, 0), BlockFace.EAST)));
assertThat(aabb.rayTrace(new Vector(0, -2, 0), new Vector(0, 1, 0), 10),
is(new RayTraceResult(new Vector(0, -1, 0), BlockFace.DOWN)));
assertThat(aabb.rayTrace(new Vector(0, 2, 0), new Vector(0, -1, 0), 10),
is(new RayTraceResult(new Vector(0, 1, 0), BlockFace.UP)));
assertThat(aabb.rayTrace(new Vector(0, 0, -2), new Vector(0, 0, 1), 10),
is(new RayTraceResult(new Vector(0, 0, -1), BlockFace.NORTH)));
assertThat(aabb.rayTrace(new Vector(0, 0, 2), new Vector(0, 0, -1), 10),
is(new RayTraceResult(new Vector(0, 0, 1), BlockFace.SOUTH)));
assertThat(aabb.rayTrace(new Vector(0, 0, 0), new Vector(1, 0, 0), 10),
is(new RayTraceResult(new Vector(1, 0, 0), BlockFace.EAST)));
assertThat(aabb.rayTrace(new Vector(0, 0, 0), new Vector(-1, 0, 0), 10),
is(new RayTraceResult(new Vector(-1, 0, 0), BlockFace.WEST)));
assertThat(aabb.rayTrace(new Vector(0, 0, 0), new Vector(0, 1, 0), 10),
is(new RayTraceResult(new Vector(0, 1, 0), BlockFace.UP)));
assertThat(aabb.rayTrace(new Vector(0, 0, 0), new Vector(0, -1, 0), 10),
is(new RayTraceResult(new Vector(0, -1, 0), BlockFace.DOWN)));
assertThat(aabb.rayTrace(new Vector(0, 0, 0), new Vector(0, 0, 1), 10),
is(new RayTraceResult(new Vector(0, 0, 1), BlockFace.SOUTH)));
assertThat(aabb.rayTrace(new Vector(0, 0, 0), new Vector(0, 0, -1), 10),
is(new RayTraceResult(new Vector(0, 0, -1), BlockFace.NORTH)));
assertThat(aabb.rayTrace(new Vector(-2, -2, -2), new Vector(1, 0, 0), 10), is(nullValue()));
assertThat(aabb.rayTrace(new Vector(-2, -2, -2), new Vector(0, 1, 0), 10), is(nullValue()));
assertThat(aabb.rayTrace(new Vector(-2, -2, -2), new Vector(0, 0, 1), 10), is(nullValue()));
assertThat(aabb.rayTrace(new Vector(0, 0, -3), new Vector(1, 0, 1), 10), is(nullValue()));
assertThat(aabb.rayTrace(new Vector(0, 0, -2), new Vector(1, 0, 2), 10),
is(new RayTraceResult(new Vector(0.5D, 0, -1), BlockFace.NORTH)));
// corner/edge hits yield unspecified block face:
assertThat(aabb.rayTrace(new Vector(2, 2, 2), new Vector(-1, -1, -1), 10),
anyOf(is(new RayTraceResult(new Vector(1, 1, 1), BlockFace.EAST)),
is(new RayTraceResult(new Vector(1, 1, 1), BlockFace.UP)),
is(new RayTraceResult(new Vector(1, 1, 1), BlockFace.SOUTH))));
assertThat(aabb.rayTrace(new Vector(-2, -2, -2), new Vector(1, 1, 1), 10),
anyOf(is(new RayTraceResult(new Vector(-1, -1, -1), BlockFace.WEST)),
is(new RayTraceResult(new Vector(-1, -1, -1), BlockFace.DOWN)),
is(new RayTraceResult(new Vector(-1, -1, -1), BlockFace.NORTH))));
assertThat(aabb.rayTrace(new Vector(0, 0, -2), new Vector(1, 0, 1), 10),
anyOf(is(new RayTraceResult(new Vector(1, 0, -1), BlockFace.NORTH)),
is(new RayTraceResult(new Vector(1, 0, -1), BlockFace.EAST))));
}
@Test
public void testSerialization() {
BoundingBox aabb = new BoundingBox(-1, -1, -1, 1, 1, 1);
Map<String, Object> serialized = aabb.serialize();
BoundingBox deserialized = BoundingBox.deserialize(serialized);
assertThat(deserialized, is(aabb));
}
}
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