@Test
public void testComputeRotationAngle() {
IPoint pt1 = ShapeFactory.createPoint();
assertEquals(Double.NaN, pt1.computeRotationAngle(null, null), 0.1);
assertEquals(Double.NaN, pt1.computeRotationAngle(ShapeFactory.createPoint(), null), 0.1);
assertEquals(Double.NaN, pt1.computeRotationAngle(null, ShapeFactory.createPoint()), 0.1);
assertEquals(
0.,
pt1.computeRotationAngle(ShapeFactory.createPoint(1, 0), ShapeFactory.createPoint(1, 0)),
0.1);
assertEquals(
0.,
pt1.computeRotationAngle(ShapeFactory.createPoint(0, 1), ShapeFactory.createPoint(0, 1)),
0.1);
assertEquals(
0.,
pt1.computeRotationAngle(ShapeFactory.createPoint(-1, 0), ShapeFactory.createPoint(-1, 0)),
0.1);
assertEquals(
0.,
pt1.computeRotationAngle(ShapeFactory.createPoint(0, -1), ShapeFactory.createPoint(0, -1)),
0.1);
assertEquals(
Math.PI / 2.,
pt1.computeRotationAngle(ShapeFactory.createPoint(1, 0), ShapeFactory.createPoint(0, 1)),
0.1);
assertEquals(
Math.PI,
Math.abs(
pt1.computeRotationAngle(
ShapeFactory.createPoint(1, 0), ShapeFactory.createPoint(-1, 0))),
0.1);
assertEquals(
3. * Math.PI / 2.,
pt1.computeRotationAngle(ShapeFactory.createPoint(1, 0), ShapeFactory.createPoint(0, -1)),
0.1);
assertEquals(
Math.PI / 2.,
pt1.computeRotationAngle(ShapeFactory.createPoint(0, 1), ShapeFactory.createPoint(-1, 0)),
0.1);
assertEquals(
Math.PI,
Math.abs(
pt1.computeRotationAngle(
ShapeFactory.createPoint(0, 1), ShapeFactory.createPoint(0, -1))),
0.1);
assertEquals(
-Math.PI / 2.,
pt1.computeRotationAngle(ShapeFactory.createPoint(0, 1), ShapeFactory.createPoint(1, 0)),
0.1);
assertEquals(
Math.PI / 2.,
pt1.computeRotationAngle(ShapeFactory.createPoint(-1, 0), ShapeFactory.createPoint(0, -1)),
0.1);
assertEquals(
Math.PI,
Math.abs(
pt1.computeRotationAngle(
ShapeFactory.createPoint(-1, 0), ShapeFactory.createPoint(1, 0))),
0.1);
assertEquals(
-Math.PI / 2.,
pt1.computeRotationAngle(ShapeFactory.createPoint(-1, 0), ShapeFactory.createPoint(0, 1)),
0.1);
assertEquals(
-3. * Math.PI / 2.,
pt1.computeRotationAngle(ShapeFactory.createPoint(0, -1), ShapeFactory.createPoint(1, 0)),
0.1);
assertEquals(
Math.PI,
Math.abs(
pt1.computeRotationAngle(
ShapeFactory.createPoint(0, -1), ShapeFactory.createPoint(0, 1))),
0.1);
assertEquals(
-Math.PI / 2.,
pt1.computeRotationAngle(ShapeFactory.createPoint(0, -1), ShapeFactory.createPoint(-1, 0)),
0.1);
}
