THREE.js - How to TWEEN individual paths/polygons of imported SVG? - svg

Question

I have imported a test SVG using the SVGLoader and am able to tween the SVG object using Tween.js.
I would like to tween the individual paths and polygons within the loaded SVG object - is this possible?
SVGLoader:
var loader = new THREE.SVGLoader();
loader.load( 'svg/test.svg', function ( paths ) {
var group = new THREE.Group();
group.scale.multiplyScalar( 0.25 );
group.position.x = -150;
group.position.y = 70;
group.scale.y *= - 1;
for ( var i = 0; i < paths.length; i ++ ) {
var path = paths[ i ];
var material = new THREE.MeshBasicMaterial( {
color: path.color,
side: THREE.DoubleSide,
depthWrite: false
} );
var shapes = path.toShapes( true );
for ( var j = 0; j < shapes.length; j ++ ) {
var shape = shapes[ j ];
var geometry = new THREE.ShapeBufferGeometry( shape );
var mesh = new THREE.Mesh( geometry, material );
group.add( mesh );
}
}
scene.add( group );
} );
Tween Function:
triggerTweens();
function triggerTweens() {
new TWEEN.Tween( title.position ).to( { x: 10 }, 5000 ).start();
}

Answer 1

I have found the following solution to this. Essentially adding the tween trigger into the loader function and passing the variable mesh, ( not group ) - allows tweening on the constituent paths and polygons etc of the SVG. To take this a step further I will figure out how to perform the tween for each separately which shouldn't be too tricky at this point.
New SVG Loader:
var loader = new THREE.SVGLoader();
loader.load( 'svg/test.svg', function ( paths ) {
var group = new THREE.Group();
group.scale.multiplyScalar( 0.25 );
group.position.x = -150;
group.position.y = 70;
group.scale.y *= - 1;
for ( var i = 0; i < paths.length; i ++ ) {
var path = paths[ i ];
var material = new THREE.MeshBasicMaterial( {
// color: path.color,
color: 0xff0000,
side: THREE.DoubleSide,
depthWrite: false
} );
var shapes = path.toShapes( true );
for ( var j = 0; j < shapes.length; j ++ ) {
var shape = shapes[ j ];
var geometry = new THREE.ExtrudeGeometry(shape, {
depth: 1,
bevelEnabled: false
});
var mesh = new THREE.Mesh( geometry, material );
// Randomly position each constituent mesh to demo
randX = Math.random() * (20000 - -20000) + -20000;
randY = Math.random() * (20000 - -20000) + -20000;
randZ = Math.random() * (20000 - -20000) + -20000;
mesh.position.set( randX, randY, randZ );
group.add( mesh );
}
triggerTweens(mesh); // Trigger tweens passing mesh variable
}
scene.add( group );
} );
New Tween Function:
// Bring all meshes back to position 0,0,0 Over 5000ms
function triggerTweens(mesh) {
new TWEEN.Tween( mesh.position ).to( { x: 0, y: 0, z: 0 }, 5000 ).easing(TWEEN.Easing.Cubic.In).start();
}