src/VTKViewport/Manipulators/customSlice.js
/**
 * Start the window level operation.
 */
Start the window level operation.
Start the window level operation .
function onStart(publicAPI, model, callData) {
  model.interactionOperation = InteractionOperations.SLICE;
  model.previousPosition = callData.position;
}
function onStart ( publicAPI , model , callData ) { model . interactionOperation = InteractionOperations . SLICE ; model . previousPosition = callData . position ; }
Start the window level operation.
Start the window level operation .
// Get the current mouse position.