Class TOrientationInterpolatorNode
Unit
X3DNodes
Declaration
type TOrientationInterpolatorNode = class(specialize TAbstractCommonInterpolatorNode<TSFRotation>)
Description
Interpolate (animate) an orientation, for example to animate TTransformNode.Rotation.
Hierarchy
Overview
Methods
Properties
Description
Methods
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function Interpolate(const TimeKey: Single): TVector4; |
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Return rotation (as axis+angle) at given time (key). Makes a warning and returns zero if FdKey is empty.
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procedure CreateNode; override; |
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Create node fields and events.
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class function ClassX3DType: String; override; |
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procedure SetKeyValue(const Value: array of TVector4); overload; |
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Properties
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property FdKeyValue: TMFRotation read FFdKeyValue; |
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Internal wrapper for property KeyValue. This wrapper API may change, we advise to access simpler KeyValue instead, if it is defined (TODO: for now, some field types do not have a simpler counterpart).
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property FdKeyValueQuaternions: TSFBool read FFdKeyValueQuaternions; |
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Internal wrapper for property KeyValueQuaternions. This wrapper API may change, we advise to access simpler KeyValueQuaternions instead, if it is defined (TODO: for now, some field types do not have a simpler counterpart).
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property KeyValueQuaternions: Boolean read GetKeyValueQuaternions write SetKeyValueQuaternions; |
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When True, key values are provided as unit quaternions. By default (when False) they have to be axis angle rotations. This allows extra optimization in case your input data is in quaternions, which is true in case of glTF. It is then most efficient to just put quternions in TOrientationInterpolatorNode.FdKeyValue and set this to True. Otherwise, you would 1. needlessly convert quaternion -> axisangle when reading glTF file, 2. needlessly convert axisangle -> quaternion as a first step of SLerp.
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