| Код |
package
{
import flash.display.Graphics;
public class SmoothLine
{
public static function draw(graphics:Graphics, dots:Array, tansion:Number, step:Number = 0.02):void {
var x:Number = dots[dots.length-1].x + (dots[dots.length-2].x - dots[dots.length-1].x);
var y:Number = dots[dots.length-1].y - (dots[dots.length-2].y - dots[dots.length-1].y);
var endDot:Vector = new Vector(x,y);
x = dots[0].x - (dots[1].x - dots[0].x);
y = dots[0].y - (dots[1].y - dots[1].y);
var startDot:Vector = new Vector(x,y);
var newDots:Array = new Array();
var i:Number = 0;
newDots.push(startDot);
for (i=0;i<dots.length;i++) {
newDots.push(dots[i]);
}
newDots.push(endDot);
graphics.moveTo(dots[0].x,dots[0].y);
for (i = 0;i<newDots.length-3;i++) {
for (var j:Number = 0; j<=1;j+=step) {
var p0:Vector = newDots[i];
var p1:Vector = newDots[(i + 1)%newDots.length];
var p2:Vector = newDots[(i + 2)%newDots.length];
var p3:Vector = newDots[(i + 3)%newDots.length];
var u:Number = j;
var uu:Number = Math.pow(u,2);
var uuu:Number = Math.pow(u,3);
var h0:Number = 2*uuu - 3*uu + 1;// calculate basis function 1
var h1:Number = -2*uuu + 3*uu;// calculate basis function 2
var h2:Number = uuu - 2*uu + u; // calculate basis function 3
var h3:Number = uuu - uu; // calculate basis function 4
var t1x:Number = tansion*(p2.x - p0.x);
var t1y:Number = tansion*(p2.y - p0.y);
var t2x:Number = tansion*(p3.x - p1.x);
var t2y:Number = tansion*(p3.y - p1.y);
x = h0*p1.x + h1*p2.x + h2*t1x + h3*t2x;
y = h0*p1.y + h1*p2.y + h2*t1y + h3*t2y;
graphics.lineTo(x,y);
}
}
}
}
}
|
| Код |
package
{
public class Vector
{
public var x:Number;
public var y:Number;
public function Vector(x:Number,y:Number) {
this.x = x;
this.y = y;
}
}
}
|
| Код |
package {
import flash.display.Sprite;
import flash.display.Graphics;
import flash.ui.Keyboard;
import flash.events.Event;
public class convertS extends Sprite
{
public function drawPlus(target:Graphics,x:Number,y:Number,r:Number):void {
target.moveTo(x+r,y);
target.lineTo(x-r,y);
target.moveTo(x,y+r);
target.lineTo(x,y-r);
}
public function convertS()
{
var pList:Array = new Array();
pList.push(new Vector(50, 250));
pList.push(new Vector(100, 300));
pList.push(new Vector(150, 200));
pList.push(new Vector(200, 250));
pList.push(new Vector(250, 300));
pList.push(new Vector(300, 350));
pList.push(new Vector(350, 320));
var sbuf:Sprite = new Sprite();
sbuf.graphics.clear();
sbuf.graphics.lineStyle(1);
addChild(sbuf);
for (var i:Number = 0;i<pList.length;i++) {
var v:Vector = pList[i];
// drawPlus(sbuf.graphics,v.x,v.y,2);
}
var dbuf:Sprite = new Sprite();
dbuf.graphics.lineStyle(1);
addChild(dbuf);
SmoothLine.draw(dbuf.graphics,pList,0.6,0.0002);
}
}
}
|
переводить в as 2 лень, это ActionScript 3.
Но смысл я думаю понять можно. |