/// <inheritdoc />
protected override void OnApplyTransformation(ref Vector3 translationDelta, ref Quaternion rotationDelta, ref Vector3 scaleDelta)
{
base.OnApplyTransformation(ref translationDelta, ref rotationDelta, ref scaleDelta);
bool applyRotation = !rotationDelta.IsIdentity;
bool useObjCenter = ActivePivot == PivotType.ObjectCenter;
Vector3 gizmoPosition = Position;
// Get instance transform
var foliage = GizmoMode.SelectedFoliage;
if (!foliage)
{
throw new InvalidOperationException("No foliage selected.");
}
var instanceIndex = GizmoMode.SelectedInstanceIndex;
if (instanceIndex < 0 || instanceIndex >= foliage.InstancesCount)
{
throw new InvalidOperationException("No foliage instance selected.");
}
var instance = foliage.GetInstance(instanceIndex);
var trans = foliage.Transform.LocalToWorld(instance.Transform);
// Apply rotation
if (applyRotation)
{
Vector3 pivotOffset = trans.Translation - gizmoPosition;
if (useObjCenter || pivotOffset.IsZero)
{
trans.Orientation *= Quaternion.Invert(trans.Orientation) * rotationDelta * trans.Orientation;
}
else
{
Matrix.RotationQuaternion(ref trans.Orientation, out var transWorld);
Matrix.RotationQuaternion(ref rotationDelta, out var deltaWorld);
Matrix world = transWorld * Matrix.Translation(pivotOffset) * deltaWorld * Matrix.Translation(-pivotOffset);
trans.SetRotation(ref world);
trans.Translation += world.TranslationVector;
}
}
// Apply scale
const float scaleLimit = 99_999_999.0f;
trans.Scale = Float3.Clamp(trans.Scale + scaleDelta, new Float3(-scaleLimit), new Float3(scaleLimit));
// Apply translation
trans.Translation += translationDelta;
// Transform foliage instance
instance.Transform = foliage.Transform.WorldToLocal(trans);
foliage.SetInstanceTransform(instanceIndex, ref instance.Transform);
foliage.RebuildClusters();
}
/// <summary>
/// Applies the transform to the collection of scene graph nodes.
/// </summary>
/// <param name="selection">The selection.</param>
/// <param name="translationDelta">The translation delta.</param>
/// <param name="rotationDelta">The rotation delta.</param>
/// <param name="scaleDelta">The scale delta.</param>
public void ApplyTransform(List <SceneGraphNode> selection, ref Vector3 translationDelta, ref Quaternion rotationDelta, ref Vector3 scaleDelta)
{
bool applyRotation = !rotationDelta.IsIdentity;
bool useObjCenter = TransformGizmo.ActivePivot == TransformGizmoBase.PivotType.ObjectCenter;
Vector3 gizmoPosition = TransformGizmo.Position;
// Transform selected objects
for (int i = 0; i < selection.Count; i++)
{
var obj = selection[i];
var trans = obj.Transform;
// Apply rotation
if (applyRotation)
{
Vector3 pivotOffset = trans.Translation - gizmoPosition;
if (useObjCenter || pivotOffset.IsZero)
{
//trans.Orientation *= rotationDelta;
trans.Orientation *= Quaternion.Invert(trans.Orientation) * rotationDelta * trans.Orientation;
}
else
{
Matrix.RotationQuaternion(ref trans.Orientation, out var transWorld);
Matrix.RotationQuaternion(ref rotationDelta, out var deltaWorld);
Matrix world = transWorld * Matrix.Translation(pivotOffset) * deltaWorld * Matrix.Translation(-pivotOffset);
trans.SetRotation(ref world);
trans.Translation += world.TranslationVector;
}
}
// Apply scale
const float scaleLimit = 99_999_999.0f;
trans.Scale = Float3.Clamp(trans.Scale + scaleDelta, new Float3(-scaleLimit), new Float3(scaleLimit));
// Apply translation
trans.Translation += translationDelta;
obj.Transform = trans;
}
}
