typescript - Angular 2: Inject service into class -

i have angular class represents shape. want able instantiate multiple instances of class using constructor.

the constructor takes multiple arguments representing properties of shape.

constructor(public center: point, public radius: number, fillcolor: string,     fillopacity: number, strokecolor: string, strokeopacity: number, zindex: number) 

inside class want use service provides capability draw shapes on map. possible inject service class , still use constructor standard way.

so want below , have angular automatically resolve injected dependency.

constructor(public center: geopoint, public radius: number,      fillcolor: string, fillopacity: number, strokecolor: string, strokeopacity: number,      zindex: number, @inject(drawingservice) drawingservice: drawingservice) 

i've managed resolve problem.

angular 2 provides reflective injector allows inject dependencies outside of constructor parameters.

all had import reflective injector @angular/core.

import {reflectiveinjector} '@angular/core'; 

and then:

let injector = reflectiveinjector.resolveandcreate([drawingservice]); this.drawingapi = injector.get(drawingservice); 

the class doesn't have decorated @injectable decorator. problem have provide dependencies drawingservice , nested dependencies, hard maintain.