* Added new helper functions to get the shortest equivalent of the rotation. In case the w component of the quaternion is negative the rotation is > 180° and taking the longer path. The quaternion will be inverted in that case to take the shortest path of rotation.
* Added unit test.
* Renamed the angle parameter of the CreateRotationX/Y/Z() functions into angleInRadians.
Signed-off-by: Benjamin Jillich <jillich@amazon.com>
Sleeping in tests and attempting to rely on fine-grained measurements to
check code validity is intrinsically brittle. Wall-clock time is
unreliable in an environment where tests are run under a hypervisor that
may choose to suspend your VM at any point, or in situations where the
OS cannot schedule your thread in time. The correct way to reintroduce
these tests in the future is provide an override for the timestamp
queries that can be injected in the test environment to control the wall
time deterministically.
Signed-off-by: Jeremy Ong <jcong@amazon.com>
In some cases, the interface being queried may be persistently nullptr
(e.g. a gem isn't active, or a feature was disabled by a cvar). In this
case, querying the interface would always enter the writer-lock branch
with existing code because nullptr was synonmous with "we haven't
queried for this variable yet."
This PR adds an additional state variable that is set when s_instance is
assigned to, so that after the variable is queried and found to be null,
future queries can enter the read-lock branch.
Signed-off-by: Jeremy Ong <jcong@amazon.com>
Direct conversion helpers for quaternion to the scaled axis-angle representation and back without the need to convert them first to the axis-angle format and manually scale (or normalize on the way back). This also avoids having to deal with the special case of an identity representation which is 0,0,0 in the scaled axis-angle format while our convention for axis-angle is 0,1,0 for the axis and 0 for the angle.
Added unit tests that check the conversion round-trips from quaternion -> (scaled) axis-angle -> quaternion as well as comparing the scaled axis-angle representations from the direct helper functions as well as the axis-angle while manually scaling/normalizing.
Signed-off-by: Benjamin Jillich <jillich@amazon.com>
The new PrefabDocument handles the Prefab and the Instance. This reduces the number of times the Instance has to be reloaded from the Prefab and keeps the entity ids stable between steps. The intention is for all the PrefabDocument to conceptually manipulate the Prefab DOM, although behind the scenes it will manipulate the Instance for now. The Instance should only be directly used in case the PrefabDocument doesn't provide the functionality yet.
Signed-off-by: AMZN-koppersr <82230785+AMZN-koppersr@users.noreply.github.com>
This fixes issues with entities that are moved to another Prefab and have a parent that was also moved to the same Prefab. Entities that have their parent moved to another Prefab continue to work as is because a placeholder entity is always left behind. Entities that are moved to another Prefab but have a parent that's still in the original Prefab will currently not work correctly. This will be a addressed in a future commit.
Signed-off-by: AMZN-koppersr <82230785+AMZN-koppersr@users.noreply.github.com>
In some cases entities created for use as a Spawnable Entity Alias would share an entity id with their original. This is no longer working due to a reverse lookup from an entity id to its PrefabDOM. Upon further investigation this turned out to not matter as instances that are created by the PrefabCatchmentProcessor would create new entity ids any way. This cause unexpected behavior at runtime as entity relations may be broken. This will be addressed in a future fix.
Testing the above also highlighted a possible double delete in the builder when aliases were registered. This has also been fixed.
Signed-off-by: AMZN-koppersr <82230785+AMZN-koppersr@users.noreply.github.com>
While processing prefabs into spawnables new prefabs can be added for later processing. Because the new prefabs were immediately added to the list of prefabs it could happen that the new prefabs would be added to the active processor for processing, which could lead to infinite recursion. Adding prefabs while iterating prefabs now delays the addition until the iteration has completed.
Signed-off-by: AMZN-koppersr <82230785+AMZN-koppersr@users.noreply.github.com>
Benjamin Jillich
Michael Pollind
Chris Galvan
nggieber
Jeremy Ong
Jeremy Ong
tjmgd
Mike Balfour
John Jones-Steele
AMZN-Igarri
bosnichd
amzn-sean
AMZN-koppersr
amzn-mike
Tom Hulton-Harrop