AS3变色例子代码
/**
* Copyright ProjectNya ( https://www.wendangku.net/doc/6a16479086.html,/user/ProjectNya )
* MIT License ( https://www.wendangku.net/doc/6a16479086.html,/licenses/mit-license.php )
* Downloaded from: https://www.wendangku.net/doc/6a16479086.html,/c/vMFv
*/
////////////////////////////////////////////////////////////////////////////////
// TrackLight (1)
//
// [AS3.0] TrackLightクラスだ！ (6)
// http://www.project-nya.jp/modules/weblog/details.php?blog_id=1291
////////////////////////////////////////////////////////////////////////////////
package {
import flash.display.Sprite;
import flash.geom.Rectangle;
[SWF(backgroundColor="#000000", width="465", height="465", frameRate="60")]
public class Main extends Sprite {
private var light:TrackLight;
public function Main() {
Wonderfl.capture_delay(4);
init();
}
private function init():void {
graphics.beginFill(0x000000);
graphics.drawRect(0, 0, 465, 465);
graphics.endFill();
//
var rect:Rectangle = new Rectangle(0, 0, 465, 465);
light = new TrackLight(rect);
addChild(light);
light.start();
}
}
}
//////////////////////////////////////////////////
// TrackLightクラス
//////////////////////////////////////////////////
import flash.display.Sprite;
import flash.display.BitmapData;
import flash.display.Bitmap;
import flash.events.Event;
import flash.geom.Rectangle;
import flash.geom.Point;
import flash.geom.ColorTransform;
import flash.display.BlendMode;
import flash.filters.BlurFilter;
import __AS3__.vec.Vector;
import flash.utils.Timer;
import flash.events.TimerEvent;
import frocessing.color.ColorHSV;
class TrackLight extends Sprite {
private var rect:Rectangle;
private var cx:uint = 0;
private var cy:uint = 0;
private var bitmapData:BitmapData;
private var bitmap:Bitmap;
private var container:Sprite;
private var color:ColorHSV;
private var colorTrans:ColorTransform;
private static var blur:BlurFilter;
private static var point:Point = new Point();
private var id:uint = 0;
private var leader:TrackLeader;
private static var max:uint = 3;
private var followers:Array;
private var tracks:Vector.
private static var interval:uint = 10;
private var particles:Array;
private var timer:Timer;
public function TrackLight(r:Rectangle) {
rect = r;
cx = rect.x + rect.width/2;
cy = rect.y + rect.height/2;
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init, false, 0, true);
}
private function init(evt:Event = null):void {
removeEventListener(Event.ADDED_TO_STAGE, init);
bitmapData = new BitmapData(rect.width, rect.height, true, 0x00000000);
bitmap = new Bitmap(bitmapData);
addChild(bitmap);
container = new
Sprite();
addChild(container);
color = new ColorHSV(0);
colorTrans = new ColorTransform();
blur = new BlurFilter(8, 8, 3);
leader = new TrackLeader();
leader.x = cx;
leader.y = cy;
followers = new Array();
tracks = new Vector.
for (var n:uint = 0; n < max; n++) {
var follower:TrackFollower = new TrackFollower();
follower.x = cx;
follower.y = cy;
followers.push(follower);
for (var t:uint = 0; t < interval; t++) {
tracks.push(new Point(cx, cy));
}
}
particles = new Array();
}
public function start():void {
timer = new Timer(20);
timer.addEventListener(TimerEvent.TIMER, create, false, 0, true);
timer.start();
addEventListener(Event.ENTER_FRAME, update, false, 0, true);
}
public function stop():void {
timer.stop();
timer.removeEventListener(TimerEvent.TIMER, create);
removeEventListener(Event.ENTER_FRAME, update);
}
private function create(evt:TimerEvent):void {
var particle:ParticleLight = new ParticleLight(8, 0xFFFFFF);
particle.track(leader);
particle.angle = Math.random()*360;
particle.speed = Math.random()*3 + 5;
particle.power = 1;
particle.setup();
particle.blendMode = BlendMode.ADD;
container.addChild(particle);
particles.push(particle);
for (var n:uint = 0; n < max; n++) {
particle = new ParticleLight(8, 0xFFFFFF);
var follower:TrackFollower = followers[n];
particle.track(follower);
particle.angle = Math.random()*360;
particle.speed = Math.random()*3 + 5;
particle.power = 1;
particle.setup();
particle.blendMode = BlendMode.ADD;
container.addChild(particle);
particles.push(particle);
}
}
private function update(evt:Event):void {
setup();
bitmapData.lock();
for (var n:uint = 0; n < particles.length; n++) {
var particle:ParticleLight = particles[n];
particle.update();
particle.scale = particle.alpha = particle.power;
if (particle.power < 0) {
container.removeChild(particle);
particles.splice(n, 1);
particle = null;
}
}
color.h = id;
colorTrans.color = color.value;
bitmapData.draw(container, null, colorTrans, BlendMode.SCREEN, null, true);
bitmapData.applyFilter(bitmapData, rect, point, blur);
bitmapData.unlock();
id ++;
}
private function setup():void {
leader.update(new Point(mouseX, mouseY));
for (var n:uint = 0; n < max; n++) {
var follower:Object = followers[n];
follower.update(tracks[interval*(n + 1) - 1]);
}
tracks.unshift(new Point(leader.x, leader.y));
tracks.pop();
}
}
//////////////////////////////////////////////////
// TrackLeaderクラス
//////////////////////////////////////////////////
import flash.geom.Point;
class TrackLeader {
public var x:Number = 0;
public var y:Number = 0;
private static var deceleration:Number = 0.16;
public function TrackLeader() {
}
public function update(track:Point):void {
x += (track.x - x)*deceleration;
y += (track.y - y)*deceleration;
}
}
//////////////////////////////////////////////////
// TrackFollowerクラス
//////////////////////////////////////////////////
import flash.geom.Point;
class TrackFollower {
public var x:Number = 0;
public var y:Number = 0;
private static var deceleration:Number = 0.16;
public function TrackFollower() {
}
public function update(track:Point):void {
x = track.x;
y = track.y;
}
}
//////////////////////////////////////////////////
// ParticleLightクラス
//////////////////////////////////////////////////
import flash.display.Shape;
class ParticleLight extends Shape {
private var radius:uint = 10;
private var color:uint = 0xFFFFFF;
private var target:Object;
public var angle:Number = 0;
public var speed:Number = 0;
private var tx:Number = 0;
private var ty:Number = 0;
private var vx:Number = 0;
private var vy:Number = 0;
public var power:Number = 0;
private static var radian:Number = Math.PI/180;
private static var friction:Number = 0.96;
private static var deceleration:Number = 0.02;
private static var acceleration:Number = 0.05;
private var _scale:Number = 1;
public function ParticleLight(r:uint = 10, c:uint = 0xFFFFFF) {
radius = r;
color = c;
draw();
}
private function draw():void {
graphics.beginFill(color);
graphics.drawCircle(0, 0, radius);
graphics.endFill();
}
public function track(t:Object):void {
target = t;
}
public function setup():void {
x = target.x;
y = target.y;
vx = speed*Math.cos(angle*radian);
vy = speed*Math.sin(angle*radian);
}
public function update():void {
tx += vx;
ty += vy;
x += (target.x + tx - x)*acceleration;
y += (target.y + ty - y)*acceleration;
vx *= friction;
vy *= friction;
power -= deceleration;
}
public function get scale():Number {
return _scale;
}
public function set scale(param:Number):void {
_scale = param;
scaleX = scaleY = _scale;
}
}