DICOMTransformTest.cs

using UnityEngine;
using System.Collections;
using UnityEngine.EventSystems;

public class DICOMTransformTest : MonoBehaviour, IPointerClickHandler {

    public void OnPointerClick(UnityEngine.EventSystems.PointerEventData eventData )
    {
        // Get the currently loaded DICOM:
        DICOM dicom = DICOMLoader.instance.currentDICOM;
        if( dicom != null )
        {
            // The world position which was clicked:
            Vector3 worldPos = eventData.pointerCurrentRaycast.worldPosition;
            // Transform the position to the patient coordinate system (i.e. in mm)
            Vector3 localPos = transform.InverseTransformPoint( worldPos );

            Debug.Log ("Clicked: " + worldPos + " (local: " + localPos + ")" );

            // Now we can either transform the position to a continuous pixel position...
            // (to do so, we use the series Info associated with the DICOM:
            Vector3 pixel = dicom.transformPatientPosToPixel ( localPos );
            Debug.Log ("Pixel: " + pixel.x + "," + pixel.y + " on layer " + pixel.z);

            // ... or we can transform it to a discrete pixel position:
            Vector3 pixelRounded = dicom.transformPatientPosToDiscretePixel ( localPos );
            Debug.Log ("Rounded: " + pixelRounded.x + "," + pixelRounded.y + " on layer " + pixelRounded.z);
        } else {
            Debug.Log ( "No DICOM loaded." );
        }
    }
}