从对象到鼠标画线(AS3) [英] Draw line from object to Mouse (AS3)
本文介绍了从对象到鼠标画线(AS3)的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我的代码在这里:
graphics.clear();
graphics.lineStyle(1, 0, 1);
graphics.moveTo(cannon.x, cannon.y);
graphics.lineTo(mouseX, mouseY);
它似乎没有画任何东西. 顺便说一句,它现在在ENTER_FRAME中.
It doesn't seem to be drawing anything. BTW it's in ENTER_FRAME right now.
推荐答案
请参考以下代码.这是我简单的代码绘制应用程序.并粘贴以下代码:
refer a following code. this is my simple code draw app. And paste the code below:
startX
和startY
应该改为您的对象(cannon
).
startX
and startY
should instead changes to the your object(cannon
).
如果要删除前一行.在onDrawReady
处理程序上调用this.graphics.clear();
.
If you want remove prior line. call a this.graphics.clear();
at onDrawReady
Handler.
var isDrawingReady:Boolean;
var startX:Number, startY:Number;
stage.addEventListener(MouseEvent.MOUSE_DOWN, onDrawReady);
stage.addEventListener(MouseEvent.MOUSE_UP, onDrawStop);
stage.addEventListener(MouseEvent.MOUSE_MOVE, onDraw);
function onDrawReady(e:MouseEvent):void
{
startX = e.stageX;
startY = e.stageY;
isDrawingReady = true;
}
function onDraw(e:MouseEvent):void
{
if(isDrawingReady)
{
this.graphics.lineStyle(2,0xff0000);
this.graphics.moveTo(startX,startY);
this.graphics.lineTo(e.stageX,e.stageY);
startX = e.stageX;
startY = e.stageY;
}
e.updateAfterEvent();
}
function onDrawStop(e:MouseEvent):void
{
isDrawingReady = false;
}
编辑
如果要始终在鼠标移动时画线.尝试如下:
EDIT
If you want always draw line when mouse move. tried as follows:
var startX:Number, startY:Number;
stage.addEventListener(MouseEvent.MOUSE_MOVE, onDraw);
function onDraw(e:MouseEvent):void
{
this.graphics.lineStyle(2,0xff0000);
this.graphics.moveTo(startX,startY);
this.graphics.lineTo(e.stageX,e.stageY);
startX = e.stageX;
startY = e.stageY;
e.updateAfterEvent();
}
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