protected sealed override Vector3 GetWorldTranslationDelta(DragTranslation translationInfo, Vector3 sourcePos)
{
var delta = translationInfo.currentPosition - m_LastHitPos;
m_LastHitPos = translationInfo.currentPosition;
return(delta);
}
protected override void OnTranslationBegin(DragTranslation translationInfo)
{
Vector3 handlePosition = transform.position;
m_LastFramePos = handlePosition;
m_HandleStartPos = MathUtility.ProjectPointOnRay(translationInfo.currentPosition, directionRay);
Vector3 offset = m_HandleStartPos - handlePosition;
m_StartNormalizedOffset = offset / HandleUtility.GetHandleSize(handlePosition);
m_StartCenterPosSize = HandleUtility.GetHandleSize(handlePosition);
m_StartHandlePosSize = HandleUtility.GetHandleSize(m_HandleStartPos);
}
protected override Vector3 GetWorldTranslationDelta(DragTranslation translationInfo, Vector3 sourcePos)
{
Vector3 projected = MathUtility.ProjectPointOnRay(translationInfo.currentPosition, directionRay);
float handleTargetSize = HandleUtility.GetHandleSize(projected); //TODO this isn't true if the target doesn't scale with screen
float centerTargetSize = handleTargetSize * m_StartCenterPosSize / m_StartHandlePosSize;
Vector3 newOffset = m_StartNormalizedOffset * centerTargetSize;
Vector3 newPos = projected - newOffset;
var delta = newPos - m_LastFramePos;
m_LastFramePos = newPos;
m_HandleStartPos = projected;
return(delta);
}
/// <summary> /// Get the delta of the current translation. The delta is in world space. /// </summary> /// <param name="translationInfo">The information of the drag.</param> /// <param name="sourcePos">The original position of the handle when the translation was started.</param> /// <returns>The delta since last translation in world space.</returns> protected abstract Vector3 GetWorldTranslationDelta(DragTranslation translationInfo, Vector3 sourcePos);
/// <summary>
/// Called when a translation ends.
/// </summary>
/// <param name="translationInfo">The last screen drag information.</param>
protected virtual void OnTranslationEnd(DragTranslation translationInfo)
{
}
/// <summary>
/// Called when a translation begins.
/// </summary>
/// <param name="translationInfo">The initial screen drag information.</param>
protected virtual void OnTranslationBegin(DragTranslation translationInfo)
{
}
protected override void OnTranslationEnd(DragTranslation translationInfo)
{
}
protected sealed override void OnTranslationBegin(DragTranslation translationInfo)
{
m_LastHitPos = translationInfo.currentPosition;
}