public static void ShowWindow(SlicingPlane sliceRendObj)
{
if (instance != null)
{
GameObject.Destroy(instance);
}
GameObject obj = new GameObject($"EditSliceGUI");
instance = obj.AddComponent <EditSliceGUI>();
instance.slicingPlane = sliceRendObj;
}
private void OnGUI()
{
SlicingPlane[] spawnedPlanes = FindObjectsOfType <SlicingPlane>();
if (spawnedPlanes.Length > 0)
{
selectedPlaneIndex = selectedPlaneIndex % spawnedPlanes.Length;
}
float bgWidth = Mathf.Min(this.position.width - 20.0f, (this.position.height - 50.0f) * 2.0f);
Rect bgRect = new Rect(0.0f, 0.0f, bgWidth, bgWidth * 0.5f);
if (selectedPlaneIndex != -1 && spawnedPlanes.Length > 0)
{
SlicingPlane planeObj = spawnedPlanes[System.Math.Min(selectedPlaneIndex, spawnedPlanes.Length - 1)];
// Draw the slice view
Material mat = planeObj.GetComponent <MeshRenderer>().sharedMaterial;
Graphics.DrawTexture(bgRect, mat.GetTexture("_DataTex"), mat);
// Handle mouse click inside slice view (activates moving the plane with mouse)
if (Event.current.type == EventType.MouseDown && Event.current.button == 0 && bgRect.Contains(new Vector2(Event.current.mousePosition.x, Event.current.mousePosition.y)))
{
handleMouseMovement = true;
prevMousePos = Event.current.mousePosition;
}
// Handle mouse movement (move the plane)
if (handleMouseMovement)
{
Vector2 mouseOffset = (Event.current.mousePosition - prevMousePos) / new Vector2(bgRect.width, bgRect.height);
if (Mathf.Abs(mouseOffset.y) > 0.00001f)
{
planeObj.transform.Translate(Vector3.up * mouseOffset.y);
prevMousePos = Event.current.mousePosition;
}
}
}
if (Event.current.type == EventType.MouseUp)
{
handleMouseMovement = false;
}
// Show buttons for changing the active plane
if (spawnedPlanes.Length > 0)
{
if (GUI.Button(new Rect(0.0f, bgRect.y + bgRect.height + 20.0f, 70.0f, 30.0f), "previous\nplane"))
{
selectedPlaneIndex = (selectedPlaneIndex - 1) % spawnedPlanes.Length;
Selection.activeGameObject = spawnedPlanes[selectedPlaneIndex].gameObject;
}
if (GUI.Button(new Rect(90.0f, bgRect.y + bgRect.height + 20.0f, 70.0f, 30.0f), "next\nplane"))
{
selectedPlaneIndex = (selectedPlaneIndex + 1) % spawnedPlanes.Length;
Selection.activeGameObject = spawnedPlanes[selectedPlaneIndex].gameObject;
}
}
// Show button for adding new plane
if (GUI.Button(new Rect(180.0f, bgRect.y + bgRect.height + 20.0f, 70.0f, 30.0f), "add\nplane"))
{
VolumeRenderedObject volRend = FindObjectOfType <VolumeRenderedObject>();
if (volRend != null)
{
selectedPlaneIndex = spawnedPlanes.Length;
volRend.CreateSlicingPlane();
}
}
// Show button for removing
if (spawnedPlanes.Length > 0 && GUI.Button(new Rect(270.0f, bgRect.y + bgRect.height + 20.0f, 70.0f, 30.0f), "remove\nplane"))
{
SlicingPlane planeToRemove = spawnedPlanes[selectedPlaneIndex];
GameObject.DestroyImmediate(planeToRemove.gameObject);
}
// Show hint
if (spawnedPlanes.Length > 0)
{
GUI.Label(new Rect(0.0f, bgRect.y + bgRect.height + 60.0f, 450.0f, 30.0f), "Move plane by left clicking in the above view and dragging the mouse,\n or simply move it in the object hierarchy.");
}
}