Circle Scissors Tool
How to set up the CircleScissors tool:
// Init cornerstone tools
cornerstoneTools.init();
// Enable any elements, and display images
// ...
// Add our tool, and set it's mode
const CircleScissorsTool = cornerstoneTools.CircleScissorsTool;
cornerstoneTools.addTool(CircleScissorsTool)
cornerstoneTools.setToolActive('CircleScissors', { mouseButtonMask: 1 })