VRML参考节点VRML节点集包括基本几何节点、复杂群节点、VRML场景效果节点、动画节点及动态感知节点等。排序后的VRML节点集如下。1.Anchor锚节点,是超级链接群节点,具有超级链接网络文件和站点功能。Anchor锚节点的语法定义如下:节点名域名和域值域值类型Anchor{ur1[]#exposeFieldMFStringchildren[]#esposeFieldMFNodedescription“”#exposeFieldSFStringparameter[]#exposeFiledMFStringbboxCenter000#filedSFVec3fbboxSize-1-1–1#filedSFVec3faddChildren#eventInMFNoderemoveChildren#eventInMFNode}2.Appearance外观属性节点,作为Shape节点的指定材质和纹理,这一节点是通过对它的域的控制来实现的。Appearance节点的语法定义如下:Appearance{materialNULL#exposedFieldSFNode外观的材料节点textureNULL#exposedFieldSFNode纹理映像textureTransformNULL#exposedFieldSFNode纹理坐标变换}3.AudioClip音响剪辑节点,不能单独使用,要和Sound声音节点一起使用。AudioClip音响剪辑节点的语法定义如下:AudioClip{url[]#exposedFieldMFStringdescription[]#exposedFieldSFStringloopFALSE#exposedFieldSFBoolpitch1.0#exposedFieldSFFloatstartTime0.0#exposedFieldSFTimestopTime0.0#exposedFieldSFTimeduration_changed#eventOutSFTimeisActive#eventOutSFBool}14.Background背景节点,是天空、大地及室内立体空间背景节点。Background背景节点的语法定义如下:Background{skyColor[0.00.00.0]#exposedFieldMFColorskyAngle[]#exposedFieldMFFloatgroundColor[0.00.00.0]#exposedFieldMFColorgroundAngle[]#exposedFieldMFFloatfrontUrl[]#exposedFieldMFStringbackUrl[]#exposedFieldMFStringleftUrl[]#exposedFieldMFStringrightUrl[]#exposedFieldMFStringtopUrl[]#exposedFieldMFStringbottomUrl[]#exposedFieldMFStringset_bind#eventInSFBoolisBound#eventOutSFBool}5.Billboard广告牌节点,是广告牌群节点。Billboard广告牌节点的语法定义如下:Billboard{axisOfRotation010#exposedFieldSFVec3fchildren[]#exposedFieldMFNodebboxCenter000#fieldSFVec3fbboxSize-1–1-1#fieldSFVec3faddChildren#eventInMFNoderemoveChildren#eventInMFNode}6.Box盒子节点,是基本几何模型节点。Box盒子节点的语法定义如下:Box{size2.02.02.0#fieldSFVec3f#定义了一个立方体的宽、高、深}7.Collision碰撞节点,是碰撞传感器节点。Collision碰撞传感器节点的语法定义如下:Collision{children[]#exposedFieldMFNodecollideTRUE#exposedFieldSFBoolproxyNULL#fieldSFNodebboxCenter0.00.00.0#fieldSFVec3fbboxSize-1.0–1.0–1.0#fieldSFVec3fcollideTime#eventOutSFTime2addChildren#eventInMFNoderemoveChildren#eventInMFNode}8.Color颜色节点。Color颜色节点的语法定义如下:Color{color[]#exposedFieldMFColor}9.ColorInterpolator颜色插补器节点,是控制颜色变换的动态节点。ColorInterpolator颜色插补器节点的语法定义如下:ColorInterpolator{key[]#exposedFieldMFFloatkeyValue[]#exposedFieldMFColorset_fraction#eventInSFFloatvalue_changed#eventOutSFColor}10.Cone圆锥体节点,是基本几何模型节点。Cone圆锥体节点的语法定义如下:Cone{bottomRadius1.0#fieldSFFloatheight2.0#fieldSFFloatsideTRUE#fieldSFBoolbottomTRUE#fieldSFBool}11.CoordinateInterpolator坐标插补器节点,是控制坐标变换的动态节点。CoordinateInterpolator坐标插补器节点的语法定义如下:CoordinateInterpolator{key[]#exposedFieldMFFloatkeyValue[]#exposedFieldMFVec3fset-fraction#eventInSFFloatvalue-changed#eventOutMFVec3f}12.CylinderSensor圆柱检测器节点,是单轴旋转型传感器节点。CylinderSensor圆柱检测器节点的语法定义如下:CylinderSensor{enabledTRUE#exposedFieldSFBoolautoOffsetTRUE#exposedFieldSFBooloffset0#exposedFieldSFFloatmaxAngle-1#exposedFieldSFFloat3minAngle0#exposedFieldSFFloatdiskAngle0.262#exposedFieldSFFloatisActive#eventOutSF...