/** * @author mrdoob / http://mrdoob.com/ */ /* ///BufferAttribute類用來存儲于bufferGeometry相干聯(lián)的屬性數(shù)據(jù),更多細節(jié)可以參考官方的樣例http://threejs.org/ /// 這個類用來存儲內(nèi)置屬性例如頂點位置,法線,色彩,等,但也能夠用于存儲bufferGeometry對象的自定義屬性. ///BufferAttribute對象的功能函數(shù)采取定義構造的函數(shù)原型對象來實現(xiàn). /// TODO:增加1個基類setAttr(index,item,itemSize)根據(jù)跟多不同的屬性相長度設置屬性 /// */ ///<summary>BufferAttribute</summary> ///<param name ="array" type="Array">屬性數(shù)組</param> ///<param name ="itemSize" type="number">屬性相長度</param> ///<returns type="BufferAttribute">返回新的屬性數(shù)組</returns> THREE.BufferAttribute = function ( array, itemSize ) { this.array = array; //BufferAttribute的array屬性 this.itemSize = itemSize; //BufferAttribute的itemSize屬性 }; /**************************************** ****下面是BufferAttribute對象提供的功能函數(shù). ****************************************/ THREE.BufferAttribute.prototype = { constructor: THREE.BufferAttribute, //構造器,返回對創(chuàng)建此對象BufferAttribute函數(shù)的援用. /* ///get length 方法用來獲得BufferAttribute的數(shù)組長度 ///NOTE: get length()BufferAttribute.prototype.length(),這類用法在除ie閱讀器之外的閱讀器上可使用. */ ///<summary>get length</summary> ///<returns type="number">返回BufferAttribute的數(shù)組長度</returns> get length () { return this.array.length; //返回BufferAttribute的數(shù)組長度 }, /* ///set方法用來重新設置BufferAttribute的屬性數(shù)組 */ ///<summary>set</summary> ///<param name ="value" type="Array">屬性數(shù)組</param> ///<returns type="BufferAttribute">返回新的BufferAttribute屬性對象</returns> set: function ( value ) { this.array.set( value ); return this; //返回新的BufferAttribute屬性對象 }, /* ///setX方法用來重新設置含有3個屬性相的BufferAttribute屬性數(shù)組的第1個份量 /// NOTE:setX方法中,屬性數(shù)組的長度是屬性相的長度乘以屬性的個數(shù).比如要寄存100個點的坐標,坐標有3個屬性相,那末屬性數(shù)組的長度是300,如果想改變第30個點的x坐標就將index設為30 */ ///<summary>setX</summary> ///<param name ="index" type="Number">屬性數(shù)組的索引</param> ///<param name ="x" type="Number">屬性數(shù)組的第1個份量</param> ///<returns type="BufferAttribute">返回新的BufferAttribute屬性對象</returns> setX: function ( index, x ) { this.array[ index * this.itemSize ] = x; return this; //返回新的BufferAttribute屬性對象 }, /* ///setY方法用來重新設置含有3個屬性相的BufferAttribute屬性數(shù)組的第2個份量 /// NOTE:setY方法中,屬性數(shù)組的長度是屬性相的長度乘以屬性的個數(shù).比如要寄存100個點的坐標,坐標有3個屬性相,那末屬性數(shù)組的長度是300,如果想改變第30個點的Y坐標就將index設為30 */ ///<summary>setY</summary> ///<param name ="index" type="Number">屬性數(shù)組的索引</param> ///<param name ="y" type="Number">屬性數(shù)組的第1個份量</param> ///<returns type="BufferAttribute">返回新的BufferAttribute屬性對象</returns> setY: function ( index, y ) { this.array[ index * this.itemSize + 1 ] = y; return this; //返回新的BufferAttribute屬性對象 }, /* ///setZ方法用來重新設置含有3個屬性相的BufferAttribute屬性數(shù)組的第3個份量 /// NOTE:setY方法中,屬性數(shù)組的長度是屬性相的長度乘以屬性的個數(shù).比如要寄存100個點的坐標,坐標有3個屬性相,那末屬性數(shù)組的長度是300,如果想改變第30個點的Z坐標就將index設為30 */ ///<summary>setZ</summary> ///<param name ="index" type="Number">屬性數(shù)組的索引</param> ///<param name ="z" type="Number">屬性數(shù)組的第1個份量</param> ///<returns type="BufferAttribute">返回新的BufferAttribute屬性對象</returns> setZ: function ( index, z ) { this.array[ index * this.itemSize + 2 ] = z; return this; //返回新的BufferAttribute屬性對象 }, /* ///setXY方法用來重新設置含有3個屬性相的BufferAttribute屬性數(shù)組的第1個和第2個份量 /// NOTE:setXY方法中,屬性數(shù)組的長度是屬性相的長度乘以屬性的個數(shù).比如要寄存100個點的坐標,坐標有3個屬性相,那末屬性數(shù)組的長度是300,如果想改變第30個點的x,y坐標就將index設為30 */ ///<summary>setXY</summary> ///<param name ="index" type="Number">屬性數(shù)組的索引</param> ///<param name ="x" type="Number">屬性數(shù)組的第1個份量</param> ///<param name ="y" type="Number">屬性數(shù)組的第2個份量</param> ///<returns type="BufferAttribute">返回新的BufferAttribute屬性對象</returns> setXY: function ( index, x, y ) { index *= this.itemSize; this.array[ index ] = x; this.array[ index + 1 ] = y; return this; //返回新的BufferAttribute屬性對象 }, /* ///setXYZ方法用來重新設置含有3個屬性相的BufferAttribute屬性數(shù)組的第1個,第2個和第3個份量 /// NOTE:setXY方法中,屬性數(shù)組的長度是屬性相的長度乘以屬性的個數(shù).比如要寄存100個點的坐標,坐標有3個屬性相,那末屬性數(shù)組的長度是300,如果想改變第30個點的x,y,z坐標就將index設為30 */ ///<summary>setXYZ</summary> ///<param name ="index" type="Number">屬性數(shù)組的索引</param> ///<param name ="x" type="Number">屬性數(shù)組的第1個份量</param> ///<param name ="y" type="Number">屬性數(shù)組的第2個份量</param> ///<param name ="z" type="Number">屬性數(shù)組的第3個份量</param> ///<returns type="BufferAttribute">返回新的BufferAttribute屬性對象</returns> setXYZ: function ( index, x, y, z ) { index *= this.itemSize; this.array[ index ] = x; this.array[ index + 1 ] = y; this.array[ index + 2 ] = z; return this; //返回新的BufferAttribute屬性對象 }, /* ///setXYZW方法用來重新設置含有3個屬性相的BufferAttribute屬性數(shù)組的第1個,第2個和第3個,第4個份量 /// NOTE:setXYZW方法中,屬性數(shù)組的長度是屬性相的長度乘以屬性的個數(shù).比如要寄存100個點的坐標,坐標有4個屬性相,那末屬性數(shù)組的長度是400,如果想改變第30個點的x,y,z,w坐標就將index設為30 */ ///<summary>setXYZW</summary> ///<param name ="index" type="Number">屬性數(shù)組的索引</param> ///<param name ="x" type="Number">屬性數(shù)組的第1個份量</param> ///<param name ="y" type="Number">屬性數(shù)組的第2個份量</param> ///<param name ="z" type="Number">屬性數(shù)組的第3個份量</param> ///<param name ="w" type="Number">屬性數(shù)組的第4個份量</param> ///<returns type="BufferAttribute">返回新的BufferAttribute屬性對象</returns> setXYZW: function ( index, x, y, z, w ) { index *= this.itemSize; this.array[ index ] = x; this.array[ index + 1 ] = y; this.array[ index + 2 ] = z; this.array[ index + 3 ] = w; return this; //返回新的BufferAttribute屬性對象 } }; /********************************************************************************** ****下面這些方法是定義不同數(shù)據(jù)類型的屬性,已在新版本中刪除,這里保存是為了向后兼容. ***********************************************************************************/ THREE.Int8Attribute = function ( data, itemSize ) { console.warn( 'THREE.Int8Attribute has been removed. Use THREE.BufferAttribute( array, itemSize ) instead.' ); return new THREE.BufferAttribute( data, itemSize ); }; THREE.Uint8Attribute = function ( data, itemSize ) { console.warn( 'THREE.Uint8Attribute has been removed. Use THREE.BufferAttribute( array, itemSize ) instead.' ); return new THREE.BufferAttribute( data, itemSize ); }; THREE.Uint8ClampedAttribute = function ( data, itemSize ) { console.warn( 'THREE.Uint8ClampedAttribute has been removed. Use THREE.BufferAttribute( array, itemSize ) instead.' ); return new THREE.BufferAttribute( data, itemSize ); }; THREE.Int16Attribute = function ( data, itemSize ) { console.warn( 'THREE.Int16Attribute has been removed. Use THREE.BufferAttribute( array, itemSize ) instead.' ); return new THREE.BufferAttribute( data, itemSize ); }; THREE.Uint16Attribute = function ( data, itemSize ) { console.warn( 'THREE.Uint16Attribute has been removed. Use THREE.BufferAttribute( array, itemSize ) instead.' ); return new THREE.BufferAttribute( data, itemSize ); }; THREE.Int32Attribute = function ( data, itemSize ) { console.warn( 'THREE.Int32Attribute has been removed. Use THREE.BufferAttribute( array, itemSize ) instead.' ); return new THREE.BufferAttribute( data, itemSize ); }; THREE.Uint32Attribute = function ( data, itemSize ) { console.warn( 'THREE.Uint32Attribute has been removed. Use THREE.BufferAttribute( array, itemSize ) instead.' ); return new THREE.BufferAttribute( data, itemSize ); }; THREE.Float32Attribute = function ( data, itemSize ) { console.warn( 'THREE.Float32Attribute has been removed. Use THREE.BufferAttribute( array, itemSize ) instead.' ); return new THREE.BufferAttribute( data, itemSize ); }; THREE.Float64Attribute = function ( data, itemSize ) { console.warn( 'THREE.Float64Attribute has been removed. Use THREE.BufferAttribute( array, itemSize ) instead.' ); return new THREE.BufferAttribute( data, itemSize ); };