使用 ActionScript 3 动态创建的多个形状

Question

我正在尝试在 AS 中动态创建动画。我想创建多个形状，这些形状将一一设置动画。因此，首先，从 dot1 创建一个形状并为其设置动画。之后，应制作第二个形状并将动画设置为 dot2。数字数组保存点的位置。我使用 drawLine 函数画线。在此之前，我设置了 10 个点。在字符串 fullDate 中，我保存点列表。此代码的结果只是第一个动画。我认为该代码不会生成很好的新形状，因此动画会在第一个动画之后完成。有谁知道如何解决这个问题？提前致谢！

  import flash.display.Shape;

var startPoint:Point = new Point();
var endPoint:Point = new Point();

var prog:Number = 0;
var bonus:Number = 1;
var frames:int = 150;

var numbers:Array = new Array();

numbers[0] = new Array();
numbers[0][0] = 460;
numbers[0][1] = 100;

numbers[1] = new Array();
numbers[1][0] = 10;
numbers[1][1] = 20;

numbers[2] = new Array();
numbers[2][0] = 10;
numbers[2][1] = 100;

numbers[3] = new Array();
numbers[3][0] = 10;
numbers[3][1] = 180;

numbers[4] = new Array();
numbers[4][0] = 160;
numbers[4][1] = 20;

numbers[5] = new Array();
numbers[5][0] = 160;
numbers[5][1] = 100;

numbers[6] = new Array();
numbers[6][0] = 160;
numbers[6][1] = 180;

numbers[7] = new Array();
numbers[7][0] = 310;
numbers[7][1] = 20;

numbers[8] = new Array();
numbers[8][0] = 310;
numbers[8][1] = 100;

numbers[9] = new Array();
numbers[9][0] = 310;
numbers[9][1] = 180;

var fullDate:String = "271524";

var i:Number;
var pom:Number;
var shapes:Vector.<Shape> = new Vector.<Shape>();
for (i=0; i < fullDate.length; i++){

    pom = int(fullDate.charAt(i));
    shapes[i] = new Shape();
    addChild(shapes[i]);

    trace(numbers[pom+1][0]);
    drawLine(numbers[pom][0], numbers[pom][1], numbers[pom+1][0], numbers[pom+1][1], 120);
}

function drawLine(startX:Number, startY:Number, endX:Number, endY:Number, time:Number = 120):void {
    startPoint.x = startX;
    startPoint.y = startY;
    endPoint.x = endX;
    endPoint.y = endY;

    frames = time;
    prog = 0;
    this.addEventListener(Event.ENTER_FRAME, tick);
}

function drawLineTick(progress:Number):void{
    for each(var shape:Shape in shapes)
    {
        shape.graphics.clear();
        shape.graphics.lineStyle(14,0x2dfdfd);

        shape.graphics.moveTo(startPoint.x,startPoint.y);
        shape.graphics.lineTo(startPoint.x + ((endPoint.x - startPoint.x) * progress), startPoint.y + ((endPoint.y - startPoint.y) * progress));

    }

}

function tick(e:Event):void {
    if(prog >= frames){
        this.removeEventListener(Event.ENTER_FRAME, tick);
    }

    drawLineTick(prog / frames);    
    prog += bonus;
} 

Answer 1

由于 ActionScript 的异步特性，在执行第一个 tick 之前，会在每个形状上调用 drawLine 方法。 drawTickLine 方法然后在您创建的每个形状中使用与日期最后部分相关的点绘制（相同的）线。

以下内容可能并不完美，因为您的问题并不是 100% 清楚结果应该是什么，但希望它可以推动您朝着正确的方向前进。我试图包括 cmets 来解释我的想法。

import flash.display.Shape;
import flash.geom.Point;
import flash.events.Event;

var startPoint:Point = new Point();
var endPoint:Point = new Point();

var count:int = 0;
var prog:Number = 0;
var bonus:Number = 1;
var frames:int = 150;

// Pushing a bunch of point objects onto the array is a neater
// method than using a multi-dimensional array. If you want the clarity of the 
// index to help with debugging you could also do this: 
// numbers[0] = new Point(460, 100);
var numbers:Array = [];
numbers.push(new Point(460, 100));
numbers.push(new Point(10, 20));
numbers.push(new Point(10, 100));
numbers.push(new Point(10, 180));
numbers.push(new Point(160, 20));
numbers.push(new Point(160, 100));
numbers.push(new Point(160, 180));
numbers.push(new Point(310, 20));
numbers.push(new Point(310, 100));
numbers.push(new Point(310, 180));

var fullDate:String = "271524";

// Vector for shapes seems overkill unless you need to loop over 
// your shapes again later. For now, we store a reference to the 
// current shape only
var shape:Shape; 

// Set up the first line
drawLine();

// Probably easier to run a single enter frame for the duration of the whole animation
this.addEventListener(Event.ENTER_FRAME, tick);

function drawLine(time:Number = 120):void {

    // Get the appropriate index for start and end points in the numbers array
    var startIndex:int = int(fullDate.charAt(count));
    var endIndex:int = int(fullDate.charAt(count + 1));

    startPoint = Point(numbers[startIndex]);
    endPoint = Point(numbers[endIndex]);    

    // create a new shape and add it to stage
    shape = new Shape();
    this.addChild(shape);

    frames = time;
    prog = 0;
}

function drawLineTick(progress:Number):void{
    shape.graphics.clear();
    shape.graphics.lineStyle(14,0x2dfdfd);

    shape.graphics.moveTo(startPoint.x,startPoint.y);
    shape.graphics.lineTo(startPoint.x + ((endPoint.x - startPoint.x) * progress), startPoint.y + ((endPoint.y - startPoint.y) * progress));
}

function tick(e:Event):void {
    drawLineTick(prog / frames);    
    prog += bonus;

    // Finished drawing a shape
    if(prog >= frames){
        // Increment count, reset progress and set up the next line
        count ++;
        prog = 0;
        drawLine();
    }

    // Finished drawing all shapes
    if (count == fullDate.length + 1) {
        // Good practice to remove the eventlistener when finished
        this.removeEventListener(Event.ENTER_FRAME, tick);
    }
}