@Test
public void findFlow() {
Dummy alg = new Dummy(3, 2, 200, ImageUInt8.class);
alg.minScore = 0.1f;
alg.targetX = 4;
alg.targetY = 8;
ImageUInt8 image = new ImageUInt8(30, 40);
ImageFlow.D flow = new ImageFlow.D();
// see if it selects the obvious minimum
assertEquals(0.1f, alg.findFlow(6, 7, image, flow), 1e-4);
assertTrue(flow.valid);
assertEquals(-2, flow.x, 1e-4);
assertEquals(1, flow.y, 1e-4);
// now try the case where the error is too high
alg.minScore = 100000000f;
alg.findFlow(6, 7, image, flow);
assertFalse(flow.valid);
// now give it a case where everything has the same score. See if it picks the one with the
// least motion
alg.sameScore = true;
alg.minScore = 0.1f;
alg.findFlow(6, 7, image, flow);
assertTrue(flow.valid);
assertEquals(0, flow.x, 1e-4);
assertEquals(0, flow.y, 1e-4);
}
