html5 canvas print

Currently, HTML5 is favored by many industry giants. Many Web developers are also trying to useHTML5To create various Web applications. The HTML5 specification introduces many new features. One of the most promising features is the Canvas Element.JavaScriptThe method of drawing a graph is very powerful. Today, this article collects 20 amazing

the same.Now draw an S-shaped curve to prove that Beziercurveto is different:The code is as follows:var x1 = 150In fact, just change the coordinates of the control point 1 a bit. If the coordinates of Control point 1 and Control point 2 are on both sides of the baseline, the curve of the S-shape is drawn, and if it is on one side of the baseline, it is similar to the Quadraticcurveto effect.The case is relatively simple, the base line (the starting point to the end point) is vertical, but most

HTML5 Development Notes: first glance at CANVAS, upload canvas images to the server, The project provides the image cropping function, which allows users to crop an image when uploading it, and select an appropriate size position as the Avatar. The crop. js plug-in is used, and canvas is used to directly draw the cropp

The example in this article describes how to delete a block area in the HTML5 canvas canvas. Share to everyone for your reference, specific as follows: The screenshot of the running effect is as follows: Attached: The black small square is the deleted block area in the picture The specific code is as follows: Index.html: Canvas.js: (funct

explore, the circle continues to grow, the starting point and the distance between the 1th shortened.The code is as follows:var // ... ctx.arcto (x1,y1,x2,y2,//Originally is a hook, now be abruptly bend, also broke to the opposite direction! It's kind of like a bottle rack.However, you see, this circle is still tangent to two lines! Just now the length of the two lines can not meet the circle! He's already wired up both lines!When does this hook handle reverse? If you have a good geometry, you

[Original] a canvas written based on the new html5 label canvas, html5canvas I recently learned canvas and wrote a small application exercise. Source code 1 Running Effect There are still some problems: The actual painting position is different from the mouse position when the browser location is changed. A breakpoin

", "white");Gradient.addcolorstop ("1.0", "Blue");Cxt.strokestyle=gradient;Cxt.stroketext ("Only the Golden House in the book", 20,100);Picture Showvar img=new Image ();Img.src= "20664369-1_b.jpg";Img.onload = function (){Cxt.drawimage (img,550,80,200,200);}Picture clippingvar img=new Image ();var img1=new Image ();img.src= ' 20664369-1_b.jpg ';Img.onload=function () {Cxt.drawimage (img,28,0,145,200,5,10,200,200);}Img1.onload=function () {Cxt.drawimage (img1,30,0,140,193,200,205,200,200);}Rectan

Write a simple canvas program for HTML5 canvas Ideas: Get the coordinates of CTX. moveTo (E. clientX-10, E. clientY-10) when pressed, and then move the mouse on the wire continuously ,! Isdown | CTX. lineto (E. clientX-10, E. clientY-10, 5, 5) when the mouse is opened, naturally it is necessary to set isdown to false.Then summarize the key steps of the draw line

Using HTML5, you can easily implement a paint application on a canvas, use a browser that supports HTML5 to paint in the area below, and to see how it works, make sure your browser supports HTML5:The function is very simple, the principle and drag and drop is similar, mainly three events: Bind the MouseDown ev

This article describes how to use Canvas in HTML5 to draw a smiling face. Canvas is a basic function in HTML5. For more information, see, you will learn a web technology called Canvas and its association with the Document Object Model (often called DOM. This technology is ve

A small test, the implementation of six simple common HTML5 canvas effect filter, and encapsulated into a pure JavaScript callable API file Gloomyfishfilter.js. the supported effects filters are: 1. Anti-color 2. Gray tone 3. Fuzzy 4. Relief 5. Carving 6. Mirroring Filter Principle Explanation: 1. Inverse color: Gets a pixel point RGB value R, G, b the new RGB value is (255-r, 255-g, 255-b) 2. Gray tune

In html5, I think the most important thing is to introduce Canvas so that we can draw various images on the web, while Canvas is pixel-based. Canvas is an html node equivalent to a drawing board. We must operate the drawing using js. In html5, I think the most important thin

This article mainly introduces how to use Canvas in HTML5 to draw particle motion based on the formula, and Javascript code as the formula. If you need a friend, refer to the previous article to get a webpage, I put some of the demos I made during the HTML5 learning process into a set. However, if I just made a web page and arranged all the demos one by one, it w

HTML5 Canvas will use pixels to draw a graphic image on the screen. This section demonstrates five Canvas techniques for manipulating pixels to create photographic effects. You can use these techniques to generate unique images that provide information or artistic interest in your site, blog, video game screen, ads, and illustrations.This tutorial contains five s

basic library with an immediate expressionTo add a method to get mouse coordinates1;(function(window) {2Window. G = {};3 functionbindevent (obj, event, fn) {4 if(obj.attachevent) {//IE5Obj.attachevent (' on ' + event,function () {6 Fn.call (obj);7 });8}Else {9 //ChromeffTenObj.addeventlistener (event, FN,false); One } A } - -G.getpos =function(DOM) { the varOPos = {x:0, y:0 }; -Bindevent (DOM, ' MouseMove ',function(EV) { - va

This article mainly introduces the canvas method Usage Guide for html5, which is very simple and clear. It is a very good article. We recommend it to you here. Canvas Method Save () save the status of the current environment Restore () returns the previously saved path status and attributes CreateEvent () GetContext () returns an object indicating the APIS neces

In this article, I will write an html5 clock application, which mainly sets the translate and ratate of the coordinate transformation, as well as the path drawing of html5Canvas, beginPath, closePath, rect, there are many issues such as arc. If you need code directly, you can refer to the html5 Canvas in the previous article, try to write an

Html5 canvas is very powerful use of its canvas can easily draw the besell curve, for your convenience in the future, this sharing implementation code, friends with this demand can refer to the view the effect: http://keleyi.com/keleyi/phtml/html5/7.htm Complete code: The Code is as follows: Use the

Sun Wukong painted with HTML5 canvas, and the white clouds painted with CSS3 floated. This article introduces how to use HTML5 + Canvas + CSS3 to achieve the cloudization Effect of Sun Wukong. If you are interested, refer to Sun Wukong using HTML5

This article mainly introduces how to use the HTML5 canvas. canvas is a rectangular area that can control each pixel. It introduces multiple functions of canvas, interested friends can refer to the canvas element using JavaScript to draw images on webpages, which is not capa