gfx-renderer

GFXRenderer

Provides boilerplate rendering code for canvas graphics

EcmaScript Module Usage

import GFXRenderer from "gfx-renderer";

const gfx = new GFXRenderer({
	canvas: document.getElementById("gfxRenderer")
	/*
    onRender:function(delta){},
    onResize:function(){},
    paused:true
    */
});

//Required function
gfx.onRender = function (delta) {
	const canvas = gfx.canvas;
	const context = gfx.context;

	//Update Position
	testPosition[0] += testSpeed[0] * delta;
	testPosition[1] += testSpeed[1] * delta;

	//Clear
	context.clearRect(0, 0, canvas.width, canvas.height);

	//Draw BG
	context.fillStype = "#000000";
	context.fillRect(0, 0, canvas.width, canvas.height);

	//Draw Circle
	context.save();
	context.fillStyle = "#FFFFFF";
	context.globalAlpha = 0.5;
	context.beginPath();
	context.arc(testPosition[0], testPosition[1], 64, 0, Math.PI << 1);
	context.fill();
	context.closePath();
	context.restore();
};

//Optional function
gfx.onResize = function (width, height) {
	console.log("resize", width, height);
};

CommonJS Usage

var gfx = new GFXRenderer({
	canvas: document.getElementById("gfxRenderer")
	/*
    onRender:function(delta){},
    onResize:function(){},
    paused:true
    */
});

//Required function
gfx.onRender = function (delta) {
	var canvas = gfx.canvas;
	var context = gfx.context;

	//Update Position
	testPosition[0] += testSpeed[0] * delta;
	testPosition[1] += testSpeed[1] * delta;

	//Clear
	context.clearRect(0, 0, canvas.width, canvas.height);

	//Draw BG
	context.fillStype = "#000000";
	context.fillRect(0, 0, canvas.width, canvas.height);

	//Draw Circle
	context.save();
	context.fillStyle = "#FFFFFF";
	context.globalAlpha = 0.5;
	context.beginPath();
	context.arc(testPosition[0], testPosition[1], 64, 0, Math.PI << 1);
	context.fill();
	context.closePath();
	context.restore();
};

//Optional function
gfx.onResize = function (width, height) {
	console.log("resize", width, height);
};

API

constructor({
	fps: 60,
	contextType: "2d",
	canvas: null, //Required
	context: null,
	paused: false,
	onRender: null
});

• init()
• destroy()
• elapsed()
• delta()
• onRender = function(delta)
• onResize = function(width, height)