view nodejs/examples/simple/testcanvas.js @ 1248:2f9fa5d59e67

Add data_monitor meta-class to monitor accessing on domview_ui. - The monitoring is to prevent from reentry triggered by DOM events. - call 'do*' methods of a monitored class would try to lock domview_ui at first. - The method would not be executed actually if being fault to lock. - You can make monitor to print debug message with environment variable - DATA_MONITOR_DBG=1, or - DATA_MONITOR_DBG=2
author Thinker K.F. Li <thinker@codemud.net>
date Tue, 11 Jan 2011 10:04:14 +0800
parents a74b4d986a91
children
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// -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 4; -*-
// vim: sw=4:ts=8:sts=4
var mbapp = require("mbapp");
var sys=require("sys");
var canvas=require("canvas");

app = new mbapp.app();

app.canvas = new canvas.canvas(app,app.mb_rt.root);

app.canvas.background(0,0,0,1);
app.canvas.rect(0,0,400,400);
app.canvas.strokeWeight(8);
width=200;
height=200;

setInterval(function() {
    app.canvas.clear();

    for(i=0;i<width;i++) {
        x = Math.random()*255;
   	    y = Math.random()*200;
	    cr = Math.random()
	    cg = Math.random()
	    cb = Math.random()
	    app.canvas.stroke(cr,cg,cb,1);
	    app.canvas.line(i,0,x,height);
	}
	app.update();
},33);
app.loop();