Trail Mesh
How To Use TrailMesh
TrailMesh creates a new Mesh that trails another.
const newTrail = new BABYLON.TrailMesh(name, generator, scene, diameter, length, autoStart);
newTrail.start(); //Starts the trailing mesh.newTrail.stop(); //Stops the trailing mesh.| variable | description |
|---|---|
variable name | description The value used by scene.getMeshByName() to do a lookup. |
variable generator | description The mesh to generate a trail. |
variable scene | description The scene to add this mesh to. |
variable diameter (optional) | description Diameter of trailing mesh. Default is 1. |
variable length (optional) | description Length of trailing mesh. Default is 60. |
variable autoStart (optional) | description Automatically start trailing mesh. Default true. |
TrailMesh will be affected by all modifications to the generator mesh. Using bakeCurrentTransformIntoVertices on the generator after scaling (and before a position shift) will prevent the TrailMesh from scaling.
Example Usage
let alpha = Math.PI;// Create a mesh for the trail to follow.const cube = BABYLON.MeshBuilder.CreateBox("cube", {}, scene);cube.scaling.y = 2;cube.bakeCurrentTransformIntoVertices();cube.position.x = Math.sin(alpha) * 10;cube.position.z = Math.cos(alpha) * 10;cube.computeWorldMatrix(true);
const trail = new BABYLON.TrailMesh("new", cube, scene, 0.5, 60, true);
const sourceMat = new BABYLON.StandardMaterial("sourceMat", scene);sourceMat.emissiveColor = sourceMat.diffuseColor = new BABYLON.Color3.Red();sourceMat.specularColor = new BABYLON.Color3.Black();
trail.material = sourceMat;
const observer = scene.onBeforeRenderObservable.add(animate);function animate() { alpha += Math.PI / 120; cube.position.x = Math.sin(alpha) * 10; cube.position.z = Math.cos(alpha) * 10; cube.rotation.x = (Math.PI * alpha) / 2; cube.rotation.y = alpha;}