To draw on the screen, it is first necessary to subclass a JComponent and override its paint() method. The paint() method is automatically called by the windowing system whenever component's area needs to be repainted. The paint() method is supplied…

There are two ways to draw basic shapes like circles, ovals, lines, arcs, squares, rectangles, rounded rectangles, and polygons. The first is to use specific drawing methods like Graphics.drawOval(). This example uses these methods. The second is to…

See also e575 The Quintessential Drawing Program and e594 Reading an Image or Icon from a File. public void paint(Graphics g) { // Draw an Image object int x = 0; int y = 0; g.drawImage(image, x, y, this); // Draw an Icon object x = 0; y = 100; icon.…

See also e575 The Quintessential Drawing Program. public void paint(Graphics g) { // Set the desired font if different from default font String family = "Serif"; int style = Font.PLAIN; int size = 12; Font font = new Font(family, style, size); g…

This example demonstrates how to set a clipping area using a shape. The example sets an oval for the clipping area and then draws and image. Only those pixels of the image that fall within the oval are displayed. // See e575 The Quintessential Drawin…

// See e575 The Quintessential Drawing Program public void paint(Graphics g) { // Retrieve the graphics context; this object is used to paint shapes Graphics2D g2d = (Graphics2D)g; // Determine if antialiasing is enabled RenderingHints rhints = g2d.g…

1 Canvas教程 <canvas>是一个新的用于通过脚本(通常是JavaScript)绘图的HTML元素.例如,他可以用于绘图.制作图片的组合或者简单的动画(当然并不那么简单).It can for instance be used to draw graphs, make photo compositions or do simple (and not so simple) animations. 1.1 基本用法 Basic usage <canvas>元素 Let's s…

原文地址:http://www.vogella.com/tutorials/AndroidListView/article.html 1. Android and Lists 1.1. Using lists in Android The display of elements in a list is a very common pattern in mobile applications. The user sees a list of items and can scroll throug…

F - Marvelous Mazes Time Limit:3000MS     Memory Limit:0KB     64bit IO Format:%lld & %llu Submit Status Practice UVA 445 Description   Your mission, if you decide to accept it, is to create a maze drawing program. A maze will consist of the alphabet…

A General Polygon Clipping Library Version 2.32    http://www.cs.man.ac.uk/~toby/alan/software/gpc.html Alan Murta Advanced Interfaces Group Department of Computer Science University of Manchester Manchester M13 9PL, UK Abstract: This document descri…