static Entity ComputeWorldTransformAndSortingGroupRec(Entity e, int maxDepth, EntityManager mgr)
{
PrivateTransformData ptf = mgr.GetComponentData <PrivateTransformData>(e);
if (ptf.flags == 0)
{
return(ptf.inSortingGroup);
}
Entity ep = mgr.GetComponentData <Parent>(e).Value;
LocalToParent tol = mgr.GetComponentData <LocalToParent>(e);
LocalToWorld tow = mgr.GetComponentData <LocalToWorld>(e);
if (ep == Entity.Null)
{
// local and global the same
ptf.inSortingGroup = Entity.Null;
tow.Value = tol.Value;
}
else
{
Assert.IsTrue(mgr.Exists(ep), "An entity has a Parent parent set to an entity that was deleted. Did you mean to use TransformHelpers.DestroyTree?");
Assert.IsTrue(mgr.HasComponent <Parent>(ep), "An entity has a Parent parent set to an entity that is not a Parent.");
Assert.IsTrue(!mgr.HasComponent <Disabled>(ep), "An entity has a Parent parent that is disabled. The child must be disabled itself to avoid rendering it. Use TransformHelpers.DisableTree to disable a hierarchy.");
if (maxDepth <= 0)
{
tow.Value = float4x4.identity;
Assert.IsTrue(false, "Transform hierarchy is too deep or has a cycle. Run TransformHelpers.DebugCheckAllNodes to debug.");
return(Entity.Null);
}
// we have a parent!
Entity ptinsg = ComputeWorldTransformAndSortingGroupRec(ep, maxDepth - 1, mgr);
float4x4 matp = mgr.GetComponentData <LocalToWorld>(ep).Value;
#if UNITY_USE_TINYMATH
tow.Value = tinymath.mul(matp, tol.Value);
#else
tow.Value = math.mul(matp, tol.Value);
#endif
if (mgr.HasComponent <SortingGroup>(ep))
{
// parent is head of a group?
ptf.inSortingGroup = ep;
}
else
{
// take whatever group parent is in
ptf.inSortingGroup = ptinsg;
}
}
ptf.flags = 0;
mgr.SetComponentData <LocalToWorld>(e, tow);
mgr.SetComponentData <PrivateTransformData>(e, ptf);
return(ptf.inSortingGroup);
}
protected override void OnUpdate()
{
var mgr = EntityManager;
EntityCommandBuffer ecb;
// make sure we have a LocalToParent for every Parent component. also initialize it to identity
// for nodes that do not have any further transforms
LocalToParent tlid = new LocalToParent {
Value = float4x4.identity
};
ecb = new EntityCommandBuffer(Allocator.Temp);
Entities
.WithAll <Parent>()
.With(EntityQueryOptions.IncludeDisabled)
.WithNone <LocalToParent>()
.ForEach(e => ecb.AddComponent(e, tlid));
ecb.Playback(mgr);
ecb.Dispose();
// make sure we have a PrivateTransformData for every Parent component
ecb = new EntityCommandBuffer(Allocator.Temp);
Entities
.WithAll <Parent>()
.With(EntityQueryOptions.IncludeDisabled)
.WithNone <PrivateTransformData>()
.ForEach(e => ecb.AddComponent(e, default(PrivateTransformData))); // zero init ok
ecb.Playback(mgr);
ecb.Dispose();
// remove PrivateTransformStatic if there is no StaticTransform component
ecb = new EntityCommandBuffer(Allocator.Temp);
Entities
.WithAll <PrivateTransformStatic>()
.With(EntityQueryOptions.IncludeDisabled)
.WithNone <TransformStatic>()
.ForEach(e => ecb.RemoveComponent <PrivateTransformStatic>(e));
ecb.Playback(mgr);
ecb.Dispose();
// clean up system state component
ecb = new EntityCommandBuffer(Allocator.Temp);
Entities
.WithAll <PrivateTransformData>()
.WithNone <Parent>()
.ForEach(e => ecb.RemoveComponent <PrivateTransformData>(e));
ecb.Playback(mgr);
ecb.Dispose();
// mark all world transforms dirty (unless they are static!)
Entities
.WithNone <PrivateTransformStatic>()
.ForEach((ref PrivateTransformData ptf) =>
{
ptf.inSortingGroup = Entity.Null;
ptf.flags = 1; // mark dirty
});
// all combinations of TRS
// If only a LocalToParent is present, it is used as-is. If any of the LocalToParent* components
// are present, they are transformed into a LocalToParent.
Entities
.WithNone <PrivateTransformStatic>()
.ForEach((ref Translation localPosition, ref LocalToParent local) =>
{
#if UNITY_USE_TINYMATH
local.Value = tinymath.Translation(localPosition.Value);
#else
local.Value = float4x4.Translate(localPosition.Value);
#endif
});
Entities
.WithNone <PrivateTransformStatic>()
.ForEach((ref Rotation localRotation, ref LocalToParent local) =>
{
#if UNITY_USE_TINYMATH
local.Value = tinymath.Rotation(localRotation.Value);
#else
local.Value = new float4x4(localRotation.Value, float3.zero);
#endif
});
Entities
.WithNone <PrivateTransformStatic>()
.ForEach((ref NonUniformScale localScale, ref LocalToParent local) =>
{
#if UNITY_USE_TINYMATH
local.Value = tinymath.Scale(localScale.Value);
#else
local.Value = float4x4.Scale(localScale.Value);
#endif
});
Entities
.WithNone <PrivateTransformStatic>()
.ForEach((ref Scale localScale, ref LocalToParent local) =>
{
#if UNITY_USE_TINYMATH
local.Value = tinymath.Scale(localScale.Value);
#else
local.Value = float4x4.Scale(localScale.Value);
#endif
});
Entities
.WithNone <PrivateTransformStatic>()
.ForEach((ref Translation localPosition, ref Rotation localRotation, ref LocalToParent local) =>
{
#if UNITY_USE_TINYMATH
local.Value = tinymath.TranslationRotation(localPosition.Value, localRotation.Value);
#else
local.Value = new float4x4(localRotation.Value, localPosition.Value);
#endif
});
Entities
.WithNone <PrivateTransformStatic>()
.ForEach((ref Translation localPosition, ref NonUniformScale localScale, ref LocalToParent local) =>
{
#if UNITY_USE_TINYMATH
local.Value = tinymath.TranslationScale(localPosition.Value, localScale.Value);
#else
local.Value = math.mul(float4x4.Translate(localPosition.Value), float4x4.Scale(localScale.Value));
#endif
});
Entities
.WithNone <PrivateTransformStatic>()
.ForEach((ref Translation localPosition, ref Scale localScale, ref LocalToParent local) =>
{
#if UNITY_USE_TINYMATH
local.Value = tinymath.TranslationScale(localPosition.Value, localScale.Value);
#else
local.Value = math.mul(float4x4.Translate(localPosition.Value), float4x4.Scale(localScale.Value));
#endif
});
Entities
.WithNone <PrivateTransformStatic>()
.ForEach((ref NonUniformScale localScale, ref Rotation localRotation, ref LocalToParent local) =>
{
#if UNITY_USE_TINYMATH
local.Value = tinymath.RotationScale(localRotation.Value, localScale.Value);
#else
local.Value = math.mul(new float4x4(localRotation.Value, float3.zero), float4x4.Scale(localScale.Value));
#endif
});
Entities
.WithNone <PrivateTransformStatic>()
.ForEach((ref Scale localScale, ref Rotation localRotation, ref LocalToParent local) =>
{
#if UNITY_USE_TINYMATH
local.Value = tinymath.RotationScale(localRotation.Value, localScale.Value);
#else
local.Value = math.mul(new float4x4(localRotation.Value, float3.zero), float4x4.Scale(localScale.Value));
#endif
});
Entities
.WithNone <PrivateTransformStatic>()
.ForEach((ref Translation localPosition, ref NonUniformScale localScale, ref Rotation localRotation, ref LocalToParent local) =>
{
#if UNITY_USE_TINYMATH
local.Value = tinymath.TranslationRotationScale(localPosition.Value, localRotation.Value, localScale.Value);
#else
local.Value = math.mul(new float4x4(localRotation.Value, localPosition.Value), float4x4.Scale(localScale.Value));
#endif
});
Entities
.WithNone <PrivateTransformStatic>()
.ForEach((ref Translation localPosition, ref Scale localScale, ref Rotation localRotation, ref LocalToParent local) =>
{
#if UNITY_USE_TINYMATH
local.Value = tinymath.TranslationRotationScale(localPosition.Value, localRotation.Value, localScale.Value);
#else
local.Value = math.mul(new float4x4(localRotation.Value, localPosition.Value), float4x4.Scale(localScale.Value));
#endif
});
}