Added persistent single-image measurments (length, ellipse) (LT-37, LT-156)

Packages/lesiontracker/lib/syncImageMeasurementAndToolData.js

@@ -0,0 +1,59 @@
+syncImageMeasurementAndToolData = function(measurement) {
+    // TODO: Refactor this to merge it with syncMeasurementAndToolData somehow
+    log.info('syncImageMeasurementAndToolData');
+
+    var toolState = cornerstoneTools.globalImageIdSpecificToolStateManager.toolState;
+
+    var imageId = measurement.imageId;
+    var toolType = measurement.measurementType;
+
+    // If no tool state exists for this imageId, create an empty object to store it
+    if (!toolState[imageId]) {
+        toolState[imageId] = {};
+    }
+
+    // Check if we already have toolData for this imageId and toolType
+    if (toolState[imageId][toolType] &&
+        toolState[imageId][toolType].data &&
+        toolState[imageId][toolType].data.length) {
+        // If we have toolData, we should search it for any toolData
+        // related to the current ImageMeasurement
+        var toolData = toolState[imageId][toolType].data;
+
+        // Create a flag so we know if we have successfully updated
+        // this ImageMeasurement's timepoint data in the toolData
+        var alreadyExists = false;
+
+        // Loop through the toolData to search for this ImageMeasurement
+        toolData.forEach(function(tool) {
+            // Break the loop if this isn't the ImageMeasurement we are looking for
+            if (tool._id !== measurement._id) {
+                return;
+            }
+
+            // If we find the ImageMeasurement, set the flag to True
+            alreadyExists = true;
+
+            // Update the toolData from the ImageMeasurement data
+            $.extend(tool, measurement);
+            return false;
+        });
+
+        // If we found the ImageMeasurement we intended to update, we can stop
+        // this function here
+        if (alreadyExists === true) {
+            return;
+        }
+    } else {
+        // If no toolData exists for this toolType, create an empty array to hold some
+        toolState[imageId][toolType] = {
+            data: []
+        };
+    }
+
+    // If we have reached this point, it means we haven't found the ImageMeasurement we are
+    // looking for in the current toolData. This means we need to add it.
+
+    // Add the ImageMeasurementData into the toolData for this imageId
+    toolState[imageId][toolType].data.push(measurement);
+};