Method InverseTransformDirection

InverseTransformDirection(float3)

Transforms a direction by the inverse of this transform.

Declaration

public float3 InverseTransformDirection(float3 direction)

Parameters

Type	Name	Description
float3	direction	The direction to be transformed.

Returns

Type	Description
float3	The direction after transformation.

Remarks

To apply a forward transform instead, use TransformDirection(float3). To inverse-transform a point instead, use InverseTransformPoint(float3).

Examples

float3 dir = new float3(2, 1, 0);
LocalTransform translationTransform = LocalTransform.FromPosition(new float3(1, 2, 3));
// dir2 will be identical to dir; transforming a direction by a translation does not change its direction.
float3 dir2 = translationTransform.TransformDirection(dir);

// Rotate the direction by pi/2 radians around the X axis, and back again.
LocalTransform rotationTransform = LocalTransform.FromRotation(quaternion.RotateX(math.PI2));
float3 dir3 = rotationTransform.TransformDirection(dir);
// dir4 should be identical to dir, within the limits of floating-point precision
float3 dir4 = rotationTransform.InverseTransformDirection(dir3);