gl2d/rendering/renderer.d.ts

2D graphics package for WebGL

import { Camera } from './camera';
import { _Program } from './program';
/**
 * Helper class for rendering graphics with WebGL.
 */
export declare abstract class Renderer {
    /**
     * The WebGL rendering context used by this renderer.
     */
    gl: WebGLRenderingContext;
    /**
     * The projection being applied by this renderer.
     */
    camera: Camera;
    /**
     * The location of the currently bound program.
     */
    private currentProgram;
    /**
     * Creates a new rendering object.
     * @param the WebGL rendering context to use.
     * @param camera the camera that should be used.
     */
    constructor(gl: WebGLRenderingContext, camera: Camera);
    /**
     * Called when the surface hosting this renderer is first created.
     */
    abstract onSurfaceCreated(): void;
    /**
     * Called whenever the canvas size changes.
     * @param width the new width of the canvas.
     * @param height the new height of the canvas.
     */
    onSurfaceChanged(width: number, height: number): void;
    /**
     * Called whenever the canvas needs to be re-rendered.
     */
    abstract onDrawFrame(): void;
    /**
     * Binds the specified program to the WebGL rendering context, if not already bound.
     * @param program the program to bind.
     */
    attachProgram<P extends _Program>(program: P): void;
}