3D表現
機会あってflashで3D表現してみました。
ちなみにActionScript3.0ですのでご注意。
半径(radius)20、色(color)"#99cc00"の球を、
以下の座標の9点に配置しました。
(0,0,0)
(50,50,50)
(-50,50,50)
(50,-50,50)
(-50,-50,50)
(50,50,-50)
(-50,50,-50)
(50,-50,-50)
(-50,-50,-50)
マウスのx座標によって回転のスピードが増します。
package {
import flash.display.Sprite;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.events.Event;
public class RotateY extends Sprite
{
private var balls:Array;
private var numBalls:uint = 9; //50
private var fl:Number = 200;
private var vpX:Number = stage.stageWidth / 2;
private var vpY:Number = stage.stageHeight / 2;
public function RotateY()
{
init();
}
private function init():void
{
stage.align = StageAlign.TOP_LEFT;
stage.scaleMode = StageScaleMode.NO_SCALE;
var xlist:Array = [0, 50, -50, 50, -50, 50, -50, 50, -50];
var ylist:Array = [0, 50, 50, -50, -50, 50, 50, -50, -50];
var zlist:Array = [0, 50, 50, 50, 50, -50, -50, -50, -50];
balls = new Array();
for(var i:uint = 0; i < numBalls; i++)
{
var ball:Ball3D = new Ball3D(15);
balls.push(ball);
ball.xpos = xlist[i]; //100>値>-100
ball.ypos = ylist[i];
ball.zpos = zlist[i];
addChild(ball);
}
addEventListener(Event.ENTER_FRAME, onEnterFrame);
}
private function onEnterFrame(event:Event):void
{
var angleY:Number = (mouseX - vpX) * .001;
for(var i:uint = 0; i < numBalls; i++)
{
var ball:Ball3D = balls[i];
rotateY(ball, angleY);
}
sortZ();
}
private function rotateY(ball:Ball3D, angleY:Number):void
{
var cosY:Number = Math.cos(angleY);
var sinY:Number = Math.sin(angleY);
var x1:Number = ball.xpos * cosY - ball.zpos * sinY;
var z1:Number = ball.zpos * cosY + ball.xpos * sinY;
ball.xpos = x1;
ball.zpos = z1;
if(ball.zpos > -fl)
{
var scale:Number = fl / (fl + ball.zpos);
ball.scaleX = ball.scaleY = scale;
ball.x = vpX + ball.xpos * scale;
ball.y = vpY + ball.ypos * scale;
ball.visible = true;
}
else
{
ball.visible = false;
}
}
private function sortZ():void
{
balls.sortOn("zpos", Array.DESCENDING | Array.NUMERIC);
for(var i:uint = 0; i < numBalls; i++)
{
var ball:Ball3D = balls[i];
setChildIndex(ball, i);
}
}
}
package {
import flash.display.Sprite;
public class Ball3D extends Sprite {
public var radius:Number;
private var color:uint;
public var xpos:Number = 0;
public var ypos:Number = 0;
public var zpos:Number = 0;
public var vx:Number = 0;
public var vy:Number = 0;
public var vz:Number = 0;
public var mass:Number = 1;
public function Ball3D(radius:Number=20, color:uint=0x99cc00) {
this.radius = radius;
this.color = color;
init();
}
public function init():void {
graphics.lineStyle(0);
graphics.beginFill(color);
graphics.drawCircle(0, 0, radius);
graphics.endFill();
}
}
}
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最終更新:2009年12月26日 14:54