forked from: [Prototyping] バネ機構（頂点-Ground間のみ接合）
フルスクリーン再生のビロビロ具合も是非お楽しみください。
/**
* Copyright kappanuki ( http://wonderfl.net/user/kappanuki )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/g4EL
*/
// forked from alumican_net's [Prototyping] バネ機構（頂点-Ground間のみ接合）
/**
* フルスクリーン再生のビロビロ具合も是非お楽しみください。
*/
package
{
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.Graphics;
import flash.display.Shape;
import flash.display.Sprite;
import flash.display.StageAlign;
import flash.display.StageQuality;
import flash.display.StageScaleMode;
import flash.events.Event;
import flash.events.MouseEvent;
import com.flashdynamix.utils.SWFProfiler;
[SWF(width = 465, height = 465, backgroundColor = 0x0, frameRate = 60)]
public class Main extends Sprite
{
//----------------------------------------
//CLASS CONSTANTS
private const W:uint = 465;
private const H:uint = 465;
private const DIVIDE_X:uint = 30;
private const DIVIDE_Y:uint = 30;
private const SPRING:Number = 0.3;
private const FRICTION:Number = 0.5;
//----------------------------------------
//VARIABLES
//nodes[idy][idx]
private var _nodes:Vector.<Vector.<Node>>;
//head node of linked list
private var _first:Node;
//drawing canvas
private var _canvas:Sprite;
//background
private var _background:BitmapData;
private var _isOnStage:Boolean;
//----------------------------------------
//METHODS
public function Main():void
{
Wonderfl.disable_capture();
//Wonderfl.capture_delay(10);
addEventListener(Event.ADDED_TO_STAGE, _initialize);
}
/**
* entry point
*/
private function _initialize(e:Event):void
{
removeEventListener(Event.ADDED_TO_STAGE, _initialize);
SWFProfiler.init(this);
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.quality = StageQuality.LOW;
var i:uint, j:uint, node:Node, old:Node;
var nx:uint = DIVIDE_X + 1;
var ny:uint = DIVIDE_Y + 1;
_isOnStage = false;
//背景カラー
_background = new BitmapData(W, H, false, 0x0);
addChild(new Bitmap(_background));
//ドロー用
_canvas = addChild(new Sprite()) as Sprite;
//ネットワーク生成
_nodes = new Vector.<Vector.<Node>>(ny);
for (i = 0; i < ny; ++i)
{
_nodes[i] = new Vector.<Node>(ny);
for (j = 0; j < ny; ++j)
{
_nodes[i][j] = node = new Node();
node.ox = node.x = j * W / DIVIDE_X;
node.oy = node.y = i * H / DIVIDE_Y;
}
}
var bounds:Vector.<Boolean> = new Vector.<Boolean>(4);
//コネクション生成
for (i = 0; i < ny; ++i)
{
for (j = 0; j < nx; ++j)
{
node = _nodes[i][j];
//隣接ノード
bounds[0] = (i == 0 ) ? true : false;
bounds[1] = (j == nx - 1) ? true : false;
bounds[2] = (i == ny - 1) ? true : false;
bounds[3] = (j == 0 ) ? true : false;
node.nn[0] = (bounds[0] ) ? null : _nodes[i - 1][j ]; //top - center
node.nn[1] = (bounds[0] || bounds[1]) ? null : _nodes[i - 1][j + 1]; //top - right
node.nn[2] = (bounds[1] ) ? null : _nodes[i ][j + 1]; //middle - right
node.nn[3] = (bounds[1] || bounds[2]) ? null : _nodes[i + 1][j + 1]; //bottom - right
node.nn[4] = (bounds[2] ) ? null : _nodes[i + 1][j ]; //bottom - center
node.nn[5] = (bounds[2] || bounds[3]) ? null : _nodes[i + 1][j - 1]; //bottom - left
node.nn[6] = (bounds[3] ) ? null : _nodes[i ][j - 1]; //middle - left
node.nn[7] = (bounds[3] || bounds[0]) ? null : _nodes[i - 1][j - 1]; //top - left
//リンクリスト
if (_first == null)
{
old = _first = node;
}
else
{
old.next = node;
old = node;
}
}
}
addEventListener(Event.ENTER_FRAME, _updateHandler);
stage.addEventListener(MouseEvent.MOUSE_OVER, _stageMouseOverHandler);
stage.addEventListener(Event.MOUSE_LEAVE, _stageMouseLeaveHandler);
}
/**
* アップデート
*/
private function _updateHandler(e:Event):void
{
_interaction();
_draw();
}
/**
* マウスインタラクションの反映
*/
private function _interaction():void
{
var tx:Number, ty:Number, dx:Number, dy:Number, dist:Number,
spring:Number = SPRING,
friction:Number = FRICTION,
node:Node = _first;
do {
if (_isOnStage)
{
dx = node.ox - mouseX;
dy = node.oy - mouseY;
dist = Math.sqrt(dx * dx + dy * dy) + 1;
tx = node.ox + dx / dist * 50;
ty = node.oy + dy / dist * 20;
}
else
{
tx = node.ox;
ty = node.oy;
}
node.vx += (tx - node.x) * spring;
node.vy += (ty - node.y) * spring;
node.x += node.vx *= friction;
node.y += node.vy *= friction;
}
while (node = node.next);
}
/**
* 描画
*/
private function _draw():void
{
var n1:Node, n2:Node, n3:Node, n4:Node,
px:Number, py:Number,
g:Graphics = _canvas.graphics;
g.clear();
g.lineStyle(1, 0xffffff);
var node:Node = _first;
do {
px = node.x;
py = node.y;
if ((n1 = node.nn[1]))
{
g.moveTo(px, py);
g.lineTo(n1.x, n1.y);
}
if ((n2 = node.nn[2]))
{
g.moveTo(px, py);
g.lineTo(n2.x, n2.y);
}
if ((n3 = node.nn[3]))
{
g.moveTo(px, py);
g.lineTo(n3.x, n3.y);
}
if ((n4 = node.nn[4]))
{
g.moveTo(px, py);
g.lineTo(n4.x, n4.y);
}
}
while (node = node.next);
}
/**
* マウスがステージ内へ入ったとき
*/
private function _stageMouseOverHandler(e:MouseEvent):void
{
_isOnStage = true;
}
/**
* マウスがステージ外へ出たとき
*/
private function _stageMouseLeaveHandler(e:Event):void
{
_isOnStage = false;
}
}
}
internal class Node
{
//----------------------------------------
//VARIABLES
public var vx:Number;
public var vy:Number;
public var x:Number;
public var y:Number;
public var ox:Number;
public var oy:Number;
public var nn:Vector.<Node>;
public var next:Node;
//----------------------------------------
//METHODS
public function Node():void
{
vx = vy = x = y = ox = oy = 0;
nn = new Vector.<Node>(8);
}
}