// forked from hiphi's forked from: 水面ゆらゆら // forked from cDa's 水面ゆらゆら /* どこかで見覚えがある水面 　ランダムで波が起きる 　マウスを上下に動かすと波がぐわんぐわん起きる 　ぎこちないので何とかする必要あり */ package { import flash.display.*; [SWF(width="300", height="300", backgroundColor="0xFFFFFF", frameRate="30")] public class Main extends Sprite { public function Main():void { for(var i:uint=0;i<3;i++){ var mc:Wave = new Wave(); mc.colors = 0x321123+i*100; mc.blendMode = "multiply"; mc.y = i*3; addChild(mc); } } } } import flash.display.MovieClip; import flash.display.StageAlign; import flash.display.StageScaleMode; import flash.events.Event; import flash.events.TimerEvent; import flash.utils.Timer; import flash.utils.getTimer; import flash.geom.Point; class Wave extends MovieClip { public const STAGE_W:uint = 400; public const STAGE_H:uint = 400; public const NUM:uint=600; //頂点数 private const MOUSE_DIFF_RATIO:Number=1; // (0<) 大きい程マウスに反応する private const AUTO_INTERVAL:uint = 10000; //オート波が起きる間隔 msec private var vertexes:Array=[]; //頂点 private var mdlPt:Array=[]; //頂点の中点 //頂点の基本波からの位相差分 // 0:マウス // 1:オート private var diffPt:Array=[[], []]; //波が起こるインデックス // 0:マウス // 1:オート private var startIndex:Array=[0,0]; private var mouseOldY:int; private var mouseNewY:int; private var mouseDiff:Number = 0; private var mouseDiffGoal:Number= 0; private var autoTimer:Timer; private var autoDiff:Number = 0; public var colors:uint; public function Wave():void { for(var i:uint=0; i<NUM; i++){ var vertex:Vertex=new Vertex( i, this ); vertexes.push( vertex ); //中点作成 if(i>1){ mdlPt.push( new Point( (vertexes[i-1].x+vertexes[i].x)*0.5, (vertexes[i-1].y+vertexes[i].y)*0.5 ) ); } //差分 diffPt[0].push( 0 ); diffPt[1].push( 0 ); } mouseNewY = mouseY; if(mouseNewY < 0){ mouseNewY = 0; } else if(mouseNewY > STAGE_H){ mouseNewY = STAGE_H; } mouseOldY = mouseNewY; addEventListener(Event.ENTER_FRAME, updateMouseDiff); addEventListener(Event.ENTER_FRAME, updateWave); autoTimer = new Timer(AUTO_INTERVAL); autoTimer.addEventListener(TimerEvent.TIMER, generateAutoWave); autoTimer.start(); } private function generateAutoWave(tEvt:TimerEvent):void { autoDiff = 100; startIndex[1] = Math.round( Math.random()*(NUM-1) ); } //-------------------------------------- // マウスY座標の差を計算 //-------------------------------------- private function updateMouseDiff(evt:Event):void { mouseOldY = mouseNewY; mouseNewY = mouseY; if(mouseNewY < 0){ mouseNewY = 0; } else if(mouseNewY > STAGE_H){ mouseNewY = STAGE_H; } mouseDiffGoal = (mouseNewY - mouseOldY) * MOUSE_DIFF_RATIO; } //--------------------------------------- // 各種更新 //--------------------------------------- private function updateWave(evt:Event):void { graphics.clear(); //それぞれの波の減衰 mouseDiff -= (mouseDiff - mouseDiffGoal)*0.3; autoDiff -= autoDiff*0.3; //------------------------------------- //波の基点 //------------------------------------- //マウス波 var mX:int = mouseX; if(mX < 0){ mX = 0; } else if(mX > STAGE_W-2){ mX = STAGE_W-2; } //-2はみ出さないための保険 startIndex[0] = 1+Math.floor( (NUM-2) * mX / STAGE_W ); diffPt[0][startIndex[0]] -= ( diffPt[0][startIndex[0]] - mouseDiff )*0.99; //オート波 diffPt[1][startIndex[1]] -= ( diffPt[1][startIndex[1]] - autoDiff )*0.99; var i:int; //------------------------------------- //差分更新 //------------------------------------- //マウス波 //左側 var d:uint; for(i=startIndex[0]-1; i >=0; i--){ d = startIndex[0] - i; if(d>15){ d=15; } diffPt[0][i] -= ( diffPt[0][i] - diffPt[0][i+1] )*(1-0.01*d); } //右側 for(i=startIndex[0]+1; i < NUM; i++){ d = i - startIndex[0]; if(d>15){ d=15; } diffPt[0][i] -= ( diffPt[0][i] - diffPt[0][i-1] )*(1-0.01*d); } //オート波 //左側 for(i=startIndex[1]-1; i >=0; i--){ d = startIndex[1] - i; if(d>15){ d=15; } diffPt[1][i] -= ( diffPt[1][i] - diffPt[1][i+1] )*(1-0.01*d); } //右側 for(i=startIndex[1]+1; i < NUM; i++){ d = i - startIndex[1]; if(d>15){ d=15; } diffPt[1][i] -= ( diffPt[1][i] - diffPt[1][i-1] )*(1-0.01*d); } //------------------------------------- //各頂点更新 //------------------------------------- for(i=0; i < NUM; i++){ vertexes[i].uodatePos( diffPt[0][i]+diffPt[1][i] ); } //------------------------------------- //中点更新 //------------------------------------- for(i=0; i < NUM-2; i++){ mdlPt[i].y = (vertexes[i+1].y + vertexes[i+2].y)*0.5; } drawWave(); } //--------------------------------------- // 描画 //--------------------------------------- private function drawWave():void { graphics.beginFill(colors, 1); graphics.moveTo(STAGE_W, STAGE_H); graphics.lineTo(0, STAGE_H); graphics.lineTo( vertexes[0].x, vertexes[0].y); graphics.curveTo( vertexes[1].x, vertexes[1].y, mdlPt[0].x, mdlPt[0].y); for(var i:uint=2; i<NUM-2; i++){ graphics.curveTo( vertexes[i].x, vertexes[i].y, mdlPt[i-1].x, mdlPt[i-1].y); } graphics.curveTo( vertexes[NUM-2].x, vertexes[NUM-2].y, vertexes[NUM-1].x, vertexes[NUM-1].y); graphics.endFill(); } } class Vertex { static const BASE_Y:uint = 150; static const BASE_R:uint = 10; static const PI:Number = Math.PI; static const FRICTION:Number = 0.1; static const DECELERATION:Number = 0.95; static const SPEED_OF_BASE_WAVE:uint = 2; private var theta:uint=0; private var goalY:Number=0; private var amp:Number=0; public var x:Number; public var y:Number; public function Vertex(prmID:uint, parent:Object):void { theta = 360 * prmID/( parent.NUM-1) ; x = prmID * parent.STAGE_W / (parent.NUM-1); y = BASE_Y + BASE_R * Math.sin( theta * PI /180 ); } public function uodatePos(diffVal:Number):void { theta += SPEED_OF_BASE_WAVE; if( theta>=360 ){ theta -= 360; } goalY = BASE_Y + BASE_R * Math.sin( theta * PI /180 ); goalY += diffVal; amp += goalY - y; y += amp * FRICTION; amp *= DECELERATION; } }