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标题: Flash3D学习——Sandy学习笔记 [11] [打印本页]

作者: . 时间: 2012-8-24 10:17
标题: Flash3D学习——Sandy学习笔记 [11]
之前根据教程，已经了解了Sandy的基本知识，可以说Sandy已经对我们敞开了大门，我们可以在Flash3D的世界里自由飞翔了。

接下来，要更加深入的对Sandy进行了解了，正式进入高级教程的部分。
这个章节是介绍关于Sandy 3D的精确显示。
这次使用的是Plane3D这个基元，这个形状是平面体，我把它理解为3D场景里的一张纸片。
public function Plane3D(p_sName:String = null, p_nHeight:Number = 100, p_nWidth:Number = 100, p_nQualityH:uint = 1, p_nQualityV:uint = 1, p_sType:String, p_sMode:String = null)
他的参数比较多：
p_sName:String (default = null) — 给实例命名

p_nHeight:Number (default = 100) — 平面体的高度

p_nWidth:Number (default = 100) — 平面体的宽度

p_nQualityH:uint (default = 1) — 横向的段数

p_nQualityV:uint (default = 1) — 纵向的段数

p_sType:String — 位平面体定向, （ XY_ALIGNED ( default ), YZ_ALIGNED or ZX_ALIGNED ）

p_sMode:String (default = null) — 模式（tri 模式有3个顶点、quad 模式有4个顶点）
代码：
package

{

import flash.display.Sprite;

import flash.events.*;

import flash.ui.*;

import sandy.core.Scene3D;

import sandy.core.data.*;

import sandy.core.scenegraph.*;

import sandy.materials.*;

import sandy.materials.attributes.*;

import sandy.primitive.*;

/**

   * ...

   * @author ever5u

   */

public class fuxi extends Sprite

{

      private var scene:Scene3D;

      private var camera:Camera3D;

      private var tg:TransformGroup;



      public function fuxi() {

         //先创建摄像机

         camera = new Camera3D( 300, 300 );

         camera.z = -400;

         camera.lookAt(0,0,0);

         //创建 Group

         var root:Group = createScene();

         //创建场景

         scene = new Scene3D( "scene", canvas, camera, root );

         scene.rectClipping = ***e;

         addEventListener( Event.ENTER_FRAME, enterFrameHandler );

         stage.addEventListener(KeyboardEvent.KEY_DOWN, keyPressedHandler);

      }

      private function createScene():Group {

         var g:Group = new Group();

         tg = new TransformGroup('myGroup');

         //创建几个平面体，并定义坐标使其组合成为一个形状

         var right:Shape3D = new Plane3D('right', 150, 100, 10, 10, Plane3D.YZ_ALIGNED,'quad');

            right.moveLateraly(100);

            right.moveForward(50)

         var left:Shape3D = new Plane3D('left', 150, 100, 10, 10, Plane3D.YZ_ALIGNED,'quad');

            left.moveLateraly(-100);

            left.moveForward(50)

         var back:Shape3D = new Plane3D('back', 100, 250, 10, 10, Plane3D.XY_ALIGNED,'quad');

            back.moveForward(100);

         var bottom:Shape3D = new Plane3D('bottom', 150, 250, 10, 10, Plane3D.ZX_ALIGNED,'quad');

            bottom.moveForward(50);

            bottom.moveUpwards( -50);

         //着色设置

         var materialAttr:MaterialAttributes = new MaterialAttributes(

            new LineAttributes( 0.5, 0x2111BB, 0.4 ),

            new LightAttributes( ***e, 0.1)

            );

         var material01:Material = new ColorMaterial( 0xFFCC33, 1, materialAttr );

         material01.lightingEnable = false;

         var material02:Material = new ColorMaterial( 0xFEA792, 1, materialAttr );

         material02.lightingEnable = false;

         var app01:Appearance = new Appearance( material01 );

         var app02:Appearance = new Appearance( material02 );

         //应用着色

         right.enableBackFaceCulling = false;

         right.appearance = app01;

         left.enableBackFaceCulling = false;

         left.appearance = app01;

         back.enableBackFaceCulling = false;

         back.appearance = app02;

         bottom.enableBackFaceCulling = ***e;

         bottom.appearance = app02;

         //是否独立渲染

         right.useSingleContainer = false;

         left.useSingleContainer = false;

         back.useSingleContainer = false;

         bottom.useSingleContainer = false;

         //组合到组

         tg.addChild(right);

         tg.addChild(left);

         tg.addChild(back);

         tg.addChild(bottom);

         g.addChild(tg);

         return g;

      }

      private function enterFrameHandler( event : Event ) : void {

         scene.render();

      }

      private function keyPressedHandler(event:KeyboardEvent):void {

         switch(event.keyCode) {

            case Keyboard.UP:

                  tg.tilt +=2;

                  break;

            case Keyboard.DOWN:

                  tg.tilt -=2;

                  break;

            case Keyboard.RIGHT:

                  tg.pan +=2;

                  break;

            case Keyboard.LEFT:

                  tg.pan -=2;

                  break;

         }

      }

}

}

效果：
http://www.blueidea.com/articleimg/2009/11/7221/Sandy_10.swf

作者: 她。 时间: 2012-11-2 09:25

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