WIP reorganization

legacy/Packages/ohif-lesiontracker/client/compatibility/bidirectionalTool/invertHandles.js

@@ -0,0 +1,42 @@
+const swapAttribute = (a, b, attribute) => {
+    const originalA = a[attribute];
+    const originalB = b[attribute];
+    a[attribute] = originalB;
+    b[attribute] = originalA;
+};
+
+const swapHandles = (a, b) => {
+    swapAttribute(a, b, 'x');
+    swapAttribute(a, b, 'y');
+    swapAttribute(a, b, 'moving');
+    swapAttribute(a, b, 'hover');
+    swapAttribute(a, b, 'active');
+    swapAttribute(a, b, 'selected');
+};
+
+function invertHandles(eventData, measurementData, handle) {
+    const { rowPixelSpacing, columnPixelSpacing } = eventData.image;
+    const { handles } = measurementData;
+    const { start, end, perpendicularStart, perpendicularEnd } = handles;
+
+    // Calculate the long axis length
+    const dx = (start.x - end.x) * (columnPixelSpacing || 1);
+    const dy = (start.y - end.y) * (rowPixelSpacing || 1);
+    const length = Math.sqrt(dx * dx + dy * dy);
+
+    // Calculate the short axis length
+    const wx = (perpendicularStart.x - perpendicularEnd.x) * (columnPixelSpacing || 1);
+    const wy = (perpendicularStart.y - perpendicularEnd.y) * (rowPixelSpacing || 1);
+    const width = Math.sqrt(wx * wx + wy * wy) || 0;
+
+    if (width > length) {
+        swapHandles(start, end);
+        swapHandles(start, perpendicularStart);
+        swapHandles(end, perpendicularEnd);
+        return Object.values(handles).find(h => h.moving === true);
+    }
+
+    return handle;
+}
+
+export default invertHandles;