疾走する線
http://linkalink.jp/enok/
/**
* Copyright linktale ( http://wonderfl.net/user/linktale )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/mwGE
*/
//http://linktale.net/
package {
import flash.display.Sprite;
[SWF(backgroundColor="0x000000", frameRate="24")]
public class FlashTest extends Sprite {
public function FlashTest() {
//背景（キャプチャ用）
var bg_color:Number = 0x000000;
var background:Sprite = new Sprite();
background.graphics.beginFill(bg_color);
background.graphics.drawRect(0, 0, stage.stageWidth, stage.stageHeight);
addChild(background);
var _trick:Sprite = new Sen(this, 10, 0x000000, true);
addChild( _trick );
}
}
}
import flash.display.DisplayObjectContainer;
import flash.display.Sprite;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.events.TimerEvent;
import flash.filters.BlurFilter;
import flash.filters.BitmapFilterQuality;
import flash.geom.Point;
import flash.utils.Timer;
import flash.display.CapsStyle;
class Sen extends Sprite {
//ワールド系
private var _s:DisplayObjectContainer;
private var _w:int;
private var _h:int;
private var _center_x:Number;
private var _center_y:Number;
private var _line_sp:Sprite = new Sprite();
private var _light_sp:Sprite = new Sprite();
//光系
private var _light:Sprite = new Sprite();
private var _light_list:Array = new Array();
private var _light_num:int = 50;
private var _light_flg:Boolean = false;
//ポイント系
private var _point:ekPoint;
private var _point_list:Array = new Array();
private var _point_size:Number = 1.0;
private var _point_head:ekPoint;
//設定系
private var _rand_rate:Number;
private var _friction:Number = 0.8 //跳ね
private var _gravity_x:Number = 10.0; //重力
private var _gravity_y:Number = 10.0; //重力
private var _gravity_xvec:Number = 1; //重力方向
private var _gravity_yvec:Number = 1; //重力方向
private var _spring:Number = 0.003; //ばね
private var _line_radius:Number = 30.0; //線の太さ
private var _line_alpha:Number = 1.0; //線のアルファ
private var _line_color:Number; //線の色
private var _point_num:int = 50; //ポイント数
//その他
private var update_ctn:Number = 0;
public function Sen( p_s:DisplayObjectContainer, p_rand_rate:Number = 5.0, p_line_color:Number = 0x000000, p_light_flg:Boolean = false ) {
//WORLD系
_s = p_s;
_w = _s.stage.stageWidth; _h = _s.stage.stageHeight;
_center_x = _w / 2; _center_y = _h / 2;
_rand_rate = p_rand_rate;
_line_color = p_line_color;
_light_flg = p_light_flg;
init();
}
private function init():void {
//光のセット
if(_light_flg){ setLight(); }
//ポイントの先頭
_point_head = new ekPoint(_w, _center_y);
//配置
addChild(_light_sp);
addChild(_line_sp);
var timer:Timer = new Timer(50, 0);
timer.addEventListener(TimerEvent.TIMER, createPoint);
timer.start();
addEventListener( Event.ENTER_FRAME, update );
addEventListener( MouseEvent.MOUSE_MOVE, mouseMove );
addEventListener( Event.REMOVED, remove );
_s.stage.addEventListener( Event.RESIZE, resize );
}
private function remove(e:Event):void {
removeEventListener( Event.ENTER_FRAME, update );
_s.stage.removeEventListener( Event.RESIZE, remove );
removeEventListener( Event.REMOVED, resize );
}
private function resize( e:Event ):void {
_w = _s.stage.stageWidth;
_h = _s.stage.stageHeight;
_center_x = _w / 2;
_center_y = _h / 2;
}
private function setLight():void {
var i:int;
var blur_sp:Sprite = new Sprite();
var blur:BlurFilter, filters:Array, blur_size:Number;
var radius_rate:Number = 2.0;
for ( i = 0; i < _light_num; i++) {
var light:Sprite = new Sprite();
light.x = -i * radius_rate * 2;
light.y = -i * radius_rate * 2;
light.graphics.clear();
light.graphics.beginFill(0xffffff, 1.0);
light.graphics.drawCircle( 0, 0, i * radius_rate);
light.graphics.endFill();
blur_size = 20;
blur = new BlurFilter( blur_size , blur_size, BitmapFilterQuality.HIGH );
filters = [blur];
light.filters = filters;
_light_list.push(light);
_light_sp.addChild(light);
}
}
private function createPoint(e:TimerEvent):void {
var i:Number;
_point = new ekPoint(_point_head.x, _point_head.y);
_point._vx = ( Math.random()) * _rand_rate;
_point._vy = ( Math.random()) * _rand_rate;
_point_list.push(_point);
for (i = 0; i < _point_list.length; i++){
if ( _point_list.length > _point_num ) {
_point = _point_list.shift();
break;
}
}
}
private function mouseMove(e:MouseEvent):void {
e.updateAfterEvent () ;
}
private function update(e:Event):void {
setPointHead();
drawLine();
move();
follow();
update_ctn++;
}
private function setPointHead():void {
var vx:Number = ( _s.stage.mouseX - _point_head.x ) / 10;
var vy:Number = ( _s.stage.mouseY - _point_head.y ) / 10;
_point_head.x += vx;
_point_head.y += vy;
}
private function drawLine():void {
_line_sp.graphics.clear();
if (_point_list.length >= 3) {
var i:Number;
var length_last:int = _point_list.length - 1;
_line_sp.graphics.moveTo(_point_list[length_last].x, _point_list[length_last].y);
var angle:Number = 0.0;
//_point_list.reverse();
for (i = length_last - 1; i >= 2; i-- ) {
_point_size = Math.sin( angle ) * _line_radius;
_line_sp.graphics.lineStyle(_point_size, _line_color, _line_alpha ,true, "normal", CapsStyle.ROUND);
_line_sp.graphics.curveTo( _point_list[i].x,
_point_list[i].y,
(_point_list[i].x + _point_list[i - 1].x) / 2,
(_point_list[i].y + _point_list[i - 1].y) / 2);
angle = angle + 0.1;
}
_line_sp.graphics.curveTo( _point_list[1].x,
_point_list[1].y,
_point_list[0].x,
_point_list[0].y);
_point_size++;
}
}
private function moveLight(p_i:Number, p_point:ekPoint):void {
_light_list[p_i].x = p_point.x;
_light_list[p_i].y = p_point.y;
}
private function follow():void {
var i:Number;
var dy:Number, ay:Number;
for (i = _point_list.length - 1; i > 0; i-- ) {
dy = _point_list[i].y - _point_list[i - 1].y;
ay = dy * _spring;
_point_list[i]._vy += ay;
}
}
private function move():void {
var i:Number;
var mx_vec:Number = 0;
var mousex:Number = _s.stage.mouseX;
var mousey:Number = _s.stage.mouseY;
var x_rate:Number = Math.abs(mousex - _center_x) / _center_x;
var y_rate:Number = Math.abs(mousey - _center_y) / _center_y;
for (i = 0; i < _point_list.length; i++ ) {
if ( mousex < _center_x) {
_gravity_xvec = 1;
}else {
_gravity_xvec = -1;
}
if (_s.stage.mouseY < _center_y) {
_gravity_yvec = 1;
}else {
_gravity_yvec = -1;
}
_point_list[i]._vx += _gravity_x * x_rate * _gravity_xvec;
_point_list[i]._vx *= _friction;
_point_list[i]._vy += _gravity_y * y_rate * _gravity_yvec;
_point_list[i]._vy *= _friction;
_point_list[i].x += _point_list[i]._vx;
_point_list[i].y += _point_list[i]._vy;
if(_light_flg){ moveLight(i, _point_list[i]); }
}
}
}
import flash.display.Sprite;
class ekPoint extends Sprite {
public var _vx:Number = 0;
public var _vy:Number = 0;
public var _radius:Number = 0;
public function ekPoint( p_x:Number, p_y:Number, p_radius:Number = 3 ) {
x = p_x;
y = p_y;
_radius = p_radius;
init();
}
public function init():void {
var point_radius:Number = _radius;
graphics.beginFill( 0x000000 , 1.0 );
graphics.drawCircle( point_radius / 2, point_radius / 2, point_radius);
graphics.endFill();
}
public function changeRadius( p_radius:Number ):void {
graphics.clear();
graphics.beginFill( 0x000000 , 1.0 );
graphics.drawCircle( p_radius / 2, p_radius / 2, p_radius);
graphics.endFill();
}
}