agents defs from DB

app/thirdparty/Threetobus/threetobus.module.js

@@ -130,6 +130,7 @@ export class Threetobus{
                     && (typeof(tweenProps[tweenGroup].method)=='function')){
                     tweenProps[tweenGroup].props.object = obj3D
                     tweenProps[tweenGroup].props.delay = mapping.tweenDelay
+                    tweenProps[tweenGroup].props.easing = mapping.tweenEasing
                     tweenProps[tweenGroup].method(tweenProps[tweenGroup].props)                    
                 } // else { console.log('avoided tween', tweenGroup)}
             }
@@ -262,11 +263,12 @@ export class Threetobus{
         //      Relative: dx,dy,dz
         //      delay: ms
         //      easings: Linear, Quadratic, Cubic, Quartic, Quintic, Sinusoidal, Exponential, Circular, Elastic, Back, Bounce
-        //      easingMode:     In → starts slow, accelerates towards the end.
+        //      easingMode:     None (mandatory for 'Linear')
+        //                      In → starts slow, accelerates towards the end.
         //                      Out → starts fast, decelerates smoothly.
         //                      InOut → slow at both ends, faster in the middle.
         options.easing = options.easing ? options.easing : 'Quadratic'
-        options.easingMode = options.easingMode ? options.easingMode : 'InOut'
+        options.easingMode = options.easingMode ? options.easingMode : ((options.easing !='Linear') ? 'InOut' : 'None')
 
         let newX = parseFloat(options.x)
         newX = isNaN(newX) ? options.object.position.x : newX