How to add user interactions?
To change the color of our object with interactions, first we will add a material.
var boxMaterial = new BABYLON.StandardMaterial("material", scene);
boxMaterial.diffuseColor = BABYLON.Color3.Random();
box.material = boxMaterial;
Now we can add a click event and change the color and position with the click
box.actionManager = new BABYLON.ActionManager(scene);
box.actionManager.registerAction(new BABYLON.ExecuteCodeAction(
BABYLON.ActionManager.OnPickTrigger,
function (evt) {
var sourceBox = evt.meshUnderPointer;
//move the box upright
sourceBox.position.x += 0.1;
sourceBox.position.y += 0.1;
//update the color
boxMaterial.diffuseColor = BABYLON.Color3.Random();
}));
Babylon.js Playground
Playground click event demo
//Create pointerDragBehavior in the desired mode
//var pointerDragBehavior = new BABYLON.PointerDragBehavior({});
//var pointerDragBehavior = new BABYLON.PointerDragBehavior({dragPlaneNormal: new BABYLON.Vector3(0,1,0)});
var pointerDragBehavior = new BABYLON.PointerDragBehavior({dragAxis: new BABYLON.Vector3(1,0,0)});
// Use drag plane in world space
pointerDragBehavior.useObjectOrientationForDragging = false;
// Listen to drag events
pointerDragBehavior.onDragStartObservable.add((event)=>{
console.log("dragStart");
console.log(event);
})
pointerDragBehavior.onDragObservable.add((event)=>{
console.log("drag");
console.log(event);
})
pointerDragBehavior.onDragEndObservable.add((event)=>{
console.log("dragEnd");
console.log(event);
})
// If handling drag events manually is desired, set move attached to false
// pointerDragBehavior.moveAttached = false;
sphere.addBehavior(pointerDragBehavior);
Solution
Last modified 2yr ago