AS3学习之路(4) 绘图板示例(0 位领导批示)
- 2009-07-27
- 分类：ActionScript
- 作者：银子
- 1,328 位领导视察
很简单的小例子..主要需要掌握的是绘制图形的 drawRect, lineStyle, moveTo, lineTo等方法..鼠标事件侦听的重要性就不再复述.
p.s. cookbook的确是很好的入门书籍.全是实例.^_^
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | package { import flash.display.Sprite; import flash.events.MouseEvent; public class ClassGraphics extends Sprite { private var mySprite:Sprite; // 构造函数 public function ClassGraphics() { this.mySprite = new Sprite(); addChild(this.mySprite); this.mySprite.graphics.beginFill(0x336699); this.mySprite.graphics.drawRect(0, 0, 550, 400); this.mySprite.graphics.endFill(); this.mySprite.addEventListener(MouseEvent.MOUSE_DOWN, spriteMouseDown); this.mySprite.addEventListener(MouseEvent.MOUSE_UP, spriteMouseUp); } // 鼠标按下事件 private function spriteMouseDown(event:MouseEvent):void { this.mySprite.graphics.lineStyle(1, 0, 1); this.mySprite.graphics.moveTo(mouseX, mouseY); this.mySprite.addEventListener(MouseEvent.MOUSE_MOVE, spriteMouseMove); } // 鼠标离开事件 private function spriteMouseUp(event:MouseEvent):void { this.mySprite.removeEventListener(MouseEvent.MOUSE_MOVE, spriteMouseMove); } // 移动事件 private function spriteMouseMove(event:MouseEvent):void { this.mySprite.graphics.lineTo(mouseX, mouseY); } } } |
