evaluate method
Implementation
@override
void evaluate(Manifold manifold, Transform xfA, Transform xfB) {
final chain = fixtureA.shape as ChainShape;
final edge = chain.childEdge(indexA);
World.collision.collideEdgeAndPolygon(
manifold,
edge,
xfA,
fixtureB.shape as PolygonShape,
xfB,
);
}