public void testStaticOps() {
Tuple source1, source2, result;
source1 = new Tuple(1.0f, 2.0f);
source2 = new Tuple(2.0f, 4.0f);
result = Tuple.plus(source1, source2);
assertEquals(3.0f, result.x);
assertEquals(6.0f, result.y);
assertNotSame(result, source1);
assertNotSame(result, source2);
result = Tuple.minus(source1, source2);
assertEquals(-1.0f, result.x);
assertEquals(-2.0f, result.y);
assertNotSame(result, source1);
assertNotSame(result, source2);
result = Tuple.multiply(source1, source2);
assertEquals(2.0f, result.x);
assertEquals(8.0f, result.y);
assertNotSame(result, source1);
assertNotSame(result, source2);
result = Tuple.divide(source1, source2);
assertEquals(0.5f, result.x);
assertEquals(0.5f, result.y);
assertNotSame(result, source1);
assertNotSame(result, source2);
}
public void testTupleOps() {
Tuple source1, source2, result;
source1 = new Tuple(1.0f, 2.0f);
source2 = new Tuple(2.0f, 4.0f);
result = new Tuple();
result.set(source1);
result.plus(source2);
assertEquals(3.0f, result.x);
assertEquals(6.0f, result.y);
result.set(source1);
result.minus(source2);
assertEquals(-1.0f, result.x);
assertEquals(-2.0f, result.y);
result.set(source1);
result.multiply(source2);
assertEquals(2.0f, result.x);
assertEquals(8.0f, result.y);
result.set(source1);
result.divide(source2);
assertEquals(0.5f, result.x);
assertEquals(0.5f, result.y);
}
public void testScalarOps() {
Tuple source1, result;
source1 = new Tuple(1.0f, 2.0f);
result = new Tuple();
result.set(source1);
result.plus(2.0f);
assertEquals(3.0f, result.x);
assertEquals(4.0f, result.y);
result.set(source1);
result.minus(2.0f);
assertEquals(-1.0f, result.x);
assertEquals(0.0f, result.y);
result.set(source1);
result.multiply(2.0f);
assertEquals(2.0f, result.x);
assertEquals(4.0f, result.y);
result.set(source1);
result.divide(2.0f);
assertEquals(0.5f, result.x);
assertEquals(1.0f, result.y);
}
public void testSet() {
Tuple input, output;
input = new Tuple(0.0f, 1.0f);
output = new Tuple(2.0f, 3.0f);
output.set(input);
assertEquals(0.0f, output.x);
assertEquals(1.0f, output.y);
output.set(2.5f, 3.5f);
assertEquals(2.5f, output.x);
assertEquals(3.5f, output.y);
}
public void testStaticExtremes() {
Tuple min, max, result;
min = new Tuple(1.0f, 1.5f);
max = new Tuple(2.0f, 2.5f);
result = Tuple.min(min, max);
assertTrue(result.equals(min));
assertNotSame(result, min);
assertNotSame(result, max);
result = Tuple.max(min, max);
assertTrue(result.equals(max));
assertNotSame(result, min);
assertNotSame(result, max);
Tuple one = new Tuple(2.0f, 4.0f);
Tuple two = new Tuple(1.0f, 5.0f);
result = Tuple.min(one, two);
assertEquals(1.0f, result.x);
assertEquals(4.0f, result.y);
assertNotSame(result, min);
assertNotSame(result, max);
result = Tuple.max(one, two);
assertEquals(2.0f, result.x);
assertEquals(5.0f, result.y);
assertNotSame(result, min);
assertNotSame(result, max);
}
public void testComparison() {
Tuple same1, same2, less, greater;
same1 = new Tuple(0.0f, 1.0f);
same2 = new Tuple(0.0f, 1.0f);
less = new Tuple(-1.0f, 1.0f);
greater = new Tuple(1.0f, 1.0f);
assertTrue(same1.equals(same2));
assertFalse(same1.equals(less));
assertFalse(same1.equals(greater));
assertTrue(same1.compareTo(same2) == 0);
assertTrue(same1.compareTo(greater) < 0);
assertTrue(same1.compareTo(less) > 0);
}
public void testTupleExtremes() {
Tuple min, max, result;
min = new Tuple(1.0f, 1.5f);
max = new Tuple(2.0f, 2.5f);
result = new Tuple();
result.set(min);
result.min(max);
assertTrue(result.equals(min));
result.set(min);
result.max(max);
assertTrue(result.equals(max));
result.set(max);
result.min(min);
assertTrue(result.equals(min));
result.set(max);
result.max(min);
assertTrue(result.equals(max));
Tuple one = new Tuple(2.0f, 4.0f);
Tuple two = new Tuple(1.0f, 5.0f);
result.set(one);
result.min(two);
assertEquals(1.0f, result.x);
assertEquals(4.0f, result.y);
result.set(one);
result.max(two);
assertEquals(2.0f, result.x);
assertEquals(5.0f, result.y);
}