flash on 2012-3-4

文字列を文字に切り離しての円運動
use papervision3d

必要なクラスのimport

by beni5963 03 Mar 2012

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/**
 * Copyright beni5963 ( http://wonderfl.net/user/beni5963 )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/ptW4
 */

/*
* 文字列を文字に切り離しての円運動
* use papervision3d
*/

package  {
    //必要なクラスのimport
    import flash.display.Sprite;
    import org.papervision3d.view.Viewport3D;
    import org.papervision3d.scenes.Scene3D;
    import org.papervision3d.cameras.Camera3D;
    import org.papervision3d.render.BasicRenderEngine;
    
    import org.papervision3d.materials.special.Letter3DMaterial;
    import org.papervision3d.typography.Text3D;
    import org.papervision3d.typography.fonts.HelveticaBold;

    import flash.events.Event;

    public class Sample10 extends Sprite { //Spriteクラス継承
        public var viewport:Viewport3D;
        public var scene:Scene3D;
        public var camera:Camera3D;
        public var renderer:BasicRenderEngine;

        private var degrees_arr:Array = new Array();//角度格納用配列
        private var text_arr:Array = new Array();//文字格納配列
        private var text_str:String = "SEISYUN-B CREATIVE LIFE RECOMMENDATION ";//表示文字列

        private var letterformat:Letter3DMaterial;
        private var basicx_int:int = 0;//基準x座標
        private var basicz_int:int = 0;//基準z座標
        private var diameter_int:int = 485;//半径
        private var speed_int:int = 1;//毎回の移動角度

        //コンストラクタ
        public function Sample10() {
            init();//初期化関数開始
        }

        //初期化関数
        public function init():void{
            viewport = new Viewport3D(stage.stageWidth , stage.stageHeight);
            addChild(viewport);//viewportを表示ツリーに追加

            renderer = new BasicRenderEngine();
            scene = new Scene3D();
            camera = new Camera3D();

            //文字の設定　引数は色コード・透過度
            letterformat = new Letter3DMaterial(0x0000ff , 0.8);
            
            //文字の分解とText3Dインスタンス生成
            for(var i:int = 0 ; i < text_str.length ; i++){
                text_arr.push(new Text3D(text_str.charAt(text_str.length - i -1) , new HelveticaBold() , letterformat));
                degrees_arr.push(i * 360 / text_str.length);//角度を均等に分割
                scene.addChild(text_arr[i]);
            }

            addEventListener(Event.ENTER_FRAME , onEnterFrame);//ENTER_FRAMEイベント定義
        }

        //ENTER_FRAME時関数
        public function onEnterFrame(event:Event):void {

            //各文字の座標及び角度計算と角度の増加
            for(var i:int = 0 ; i < text_str.length ; i++){
                
                text_arr[i].x = Math.sin(degrees_arr[i] * Math.PI/180) * diameter_int + basicx_int;
                text_arr[i].z = Math.cos(degrees_arr[i] * Math.PI/180) * diameter_int + basicz_int;
                
                //rotationYにおいての文字の反転が行えなかったため、scaleXを位置によって変更することで反転表示に対応
                if(degrees_arr[i] > 90 && degrees_arr[i] < 270){
                    text_arr[i].rotationY = degrees_arr[i] + 180;
                    text_arr[i].scaleX = 1;
                }
                else{
                    text_arr[i].rotationY = degrees_arr[i];
                    text_arr[i].scaleX = -1;
                }
                
                degrees_arr[i] += speed_int;
                degrees_arr[i] %= 360;
            }

            renderer.renderScene(scene, camera, viewport);//描画
        }
    }
}