Instance Property

simdTransform

The transform applied to the node relative to its parent. Animatable.

Declaration

@property(nonatomic) simd_float4x4 simdTransform;

Discussion

The transform is the combination of the node’s simdRotation, simdPosition, and simdScale properties. The default transform is the identity matrix.

When you set the value of this property, the node’s simdRotation, simdOrientation, simdEulerAngles, simdPosition, and simdScale properties automatically change to match the new transform, and vice versa. SceneKit can perform this conversion only if the transform you provide is a combination of rotation, translation, and scale operations. If you set the value of this property to a skew transform or to a nonaffine transform, the values of these properties become undefined. Setting a new value for any of these properties causes SceneKit to compute a new transform, discarding any skew or nonaffine operations in the original transform.

You can animate changes to this property’s value. See Animating SceneKit Content.

See Also

Managing the Node's Transform

simdPosition

The translation applied to the node. Animatable.

simdRotation

The node’s orientation, expressed as a rotation angle about an axis. Animatable.

simdEulerAngles

The node’s orientation, expressed as pitch, yaw, and roll angles in radians. Animatable.

simdOrientation

The node’s orientation, expressed as a quaternion. Animatable.

simdScale

The scale factor applied to the node. Animatable.

simdPivot

The pivot point for the node’s position, rotation, and scale. Animatable.