public void GetClosestReturnsFirstKeyframe()
{
int keyPos = 10;
int getAtPos = keyPos - 5;
KeyframeTimelineDeprecated testCollection = new KeyframeTimelineDeprecated();
KeyframePropertyInfo testProperty = new KeyframePropertyInfo(null, PropertyType.Executable);
Entity testNode = new Entity();
//Add some keys
testCollection.AddKeyframe(new ValueKeyframe(testProperty, null, null), keyPos, testNode);
testCollection.AddKeyframe(new ValueKeyframe(testProperty, null, null), keyPos + 2, testNode);
testCollection.AddKeyframe(new ValueKeyframe(testProperty, null, null), keyPos + 4, testNode);
Tuple <int, int> closest = testCollection.GetClosestKeys(testProperty, getAtPos);
Assert.AreEqual(keyPos, closest.Item1);
Assert.AreEqual(keyPos, closest.Item2);
}
public KeySet GetClosestKeys(KeyframePropertyInfo info, int time)
{
int firstKey, lastKey;
//Find the times at which a keyframe exist
List <int> times = propertiesCache?[info];
if (times == null)
{
throw new ArgumentException($"{nameof(KeyframePropertyInfo)} not valid for timeline, is it not a property of the entity with keyframe attribute?", nameof(info));
}
int[] keysArray = times.ToArray();
//Find the lower bound index
int lowerBoundIndex = BinarySearch(keysArray, time);
//Get the keys for our retrieved indices
if (lowerBoundIndex != 0)
{
//We have at least one item before us
firstKey = keysArray[lowerBoundIndex - 1];
//Check if our first key is also the last, in this case lastkey
//will be the same as first key.. If we are not at the end we
//assign lastkey to one the content of one index higher
if (lowerBoundIndex < keysArray.Length)
{
lastKey = keysArray[lowerBoundIndex];
}
else
{
lastKey = firstKey;
}
}
else
{
//if index is 0 this means there are no keyframes before our
//given time. We know there is at least one entry therefore we can
//assume that the first entry in our list of keyframes is the closest one
firstKey = keysArray[0];
lastKey = firstKey;
}
return(new KeySet(keysArray[firstKey], keysArray[lastKey]));
}
public ValueKeyframe GetPropertyKey(KeyframePropertyInfo keys, int time)
{
throw new NotImplementedException();
}
