Corrected bug with ki, kf trajectories

js/client/utils/shapes/trajectory-circle-iterator.js

+const { matrix } = require('../../server-state');
+
 /**
  * Class defining the trajectory circle iterator.
  */
 class TrajectoryCircleIterator {
     constructor(center, start, end, intervals) {
-        this._currentPosition = start.clone();
-        this._center = center.clone();
 
-        let CS = start.clone().sub(center);
-        let CE = end.clone().sub(center);
+        // The vectors center, start and end are in Rc.
+        // They must be converted into R to calculate the circle.
+        this._currentPosition = start.clone().applyMatrix3(matrix.bMatrix);
+        this._center = center.clone().applyMatrix3(matrix.bMatrix);
+        this._end = end.clone().applyMatrix3(matrix.bMatrix);
+
+        let CS = this._currentPosition.clone().sub(this._center);
+        let CE = this._end.clone().sub(this._center);
         this._axis = CS.clone().cross(CE).normalize();
         this._step = CS.angleTo(CE) / intervals;
         
@@ -15,7 +21,8 @@ class TrajectoryCircleIterator {
     }
 
     value() {
-        return this._currentPosition.clone();
+        // The result vector is converted back in Rc.
+        return this._currentPosition.clone().applyMatrix3(matrix.bMatrix_1);
     }
 
     next() {

js/client/views/panels/scattering-view.js

@@ -218,7 +218,7 @@ class ScatteringPanelView {
     }
     
     /**
-     * Updates the points with the new ki value.
+     * Updates the points with the new ki or kf value.
      */
     updateQKiKf(ki, kf, qh, qk, ql, qnorm, ss) {