全部移动至es模块
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yhh
@@ -1,183 +1,185 @@
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/** 2d 向量 */
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class Vector2 {
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public x: number = 0;
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public y: number = 0;
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module es {
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/** 2d 向量 */
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export class Vector2 {
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public x: number = 0;
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public y: number = 0;
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private static readonly unitYVector = new Vector2(0, 1);
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private static readonly unitXVector = new Vector2(1, 0);
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private static readonly unitVector2 = new Vector2(1, 1);
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private static readonly zeroVector2 = new Vector2(0, 0);
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public static get zero(){
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return Vector2.zeroVector2;
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private static readonly unitYVector = new Vector2(0, 1);
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private static readonly unitXVector = new Vector2(1, 0);
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private static readonly unitVector2 = new Vector2(1, 1);
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private static readonly zeroVector2 = new Vector2(0, 0);
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public static get zero(){
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return Vector2.zeroVector2;
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}
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public static get one(){
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return Vector2.unitVector2;
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}
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public static get unitX(){
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return Vector2.unitXVector;
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}
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public static get unitY(){
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return Vector2.unitYVector;
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}
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/**
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* 从两个值构造一个带有X和Y的二维向量。
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* @param x 二维空间中的x坐标
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* @param y 二维空间的y坐标
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*/
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constructor(x? : number, y?: number){
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this.x = x ? x : 0;
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this.y = y ? y : this.x;
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}
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/**
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*
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* @param value1
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* @param value2
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*/
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public static add(value1: Vector2, value2: Vector2){
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let result: Vector2 = new Vector2(0, 0);
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result.x = value1.x + value2.x;
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result.y = value1.y + value2.y;
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return result;
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}
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/**
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*
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* @param value1
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* @param value2
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*/
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public static divide(value1: Vector2, value2: Vector2){
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let result: Vector2 = new Vector2(0, 0);
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result.x = value1.x / value2.x;
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result.y = value1.y / value2.y;
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return result;
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}
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/**
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*
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* @param value1
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* @param value2
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*/
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public static multiply(value1: Vector2, value2: Vector2){
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let result: Vector2 = new Vector2(0, 0);
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result.x = value1.x * value2.x;
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result.y = value1.y * value2.y;
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return result;
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}
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/**
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*
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* @param value1
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* @param value2
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*/
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public static subtract(value1: Vector2, value2: Vector2){
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let result: Vector2 = new Vector2(0, 0);
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result.x = value1.x - value2.x;
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result.y = value1.y - value2.y;
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return result;
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}
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/** 变成一个方向相同的单位向量 */
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public normalize(){
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let val = 1 / Math.sqrt((this.x * this.x) + (this.y * this.y));
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this.x *= val;
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this.y *= val;
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}
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/** 返回它的长度 */
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public length(){
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return Math.sqrt((this.x * this.x) + (this.y * this.y));
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}
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/** 对x和y值四舍五入 */
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public round(): Vector2{
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return new Vector2(Math.round(this.x), Math.round(this.y));
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}
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/**
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* 创建一个新的Vector2
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* 它包含来自另一个向量的标准化值。
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* @param value
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*/
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public static normalize(value: Vector2){
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let val = 1 / Math.sqrt((value.x * value.x) + (value.y * value.y));
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value.x *= val;
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value.y *= val;
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return value;
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}
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/**
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* 返回两个向量的点积
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* @param value1
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* @param value2
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*/
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public static dot(value1: Vector2, value2: Vector2): number{
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return (value1.x * value2.x) + (value1.y * value2.y);
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}
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/**
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* 返回两个向量之间距离的平方
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* @param value1
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* @param value2
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*/
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public static distanceSquared(value1: Vector2, value2: Vector2){
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let v1 = value1.x - value2.x, v2 = value1.y - value2.y;
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return (v1 * v1) + (v2 * v2);
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}
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/**
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*
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* @param value1
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* @param min
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* @param max
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*/
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public static clamp(value1: Vector2, min: Vector2, max: Vector2){
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return new Vector2(MathHelper.clamp(value1.x, min.x, max.x),
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MathHelper.clamp(value1.y, min.y, max.y));
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}
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/**
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* 包含指定向量的线性插值
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* @param value1 第一个向量
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* @param value2 第二个向量
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* @param amount 权重值(0.0到1.0之间)
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*/
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public static lerp(value1: Vector2, value2: Vector2, amount: number){
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return new Vector2(MathHelper.lerp(value1.x, value2.x, amount), MathHelper.lerp(value1.y, value2.y, amount));
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}
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/**
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*
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* @param position
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* @param matrix
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*/
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public static transform(position: Vector2, matrix: Matrix2D){
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return new Vector2((position.x * matrix.m11) + (position.y * matrix.m21), (position.x * matrix.m12) + (position.y * matrix.m22));
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}
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/**
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* 返回两个向量之间的距离
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* @param value1
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* @param value2
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*/
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public static distance(value1: Vector2, value2: Vector2){
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let v1 = value1.x - value2.x, v2 = value1.y - value2.y;
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return Math.sqrt((v1 * v1) + (v2 * v2));
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}
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/**
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* 矢量反演的结果
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* @param value
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*/
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public static negate(value: Vector2){
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let result: Vector2 = new Vector2();
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result.x = -value.x;
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result.y = -value.y;
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return result;
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}
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}
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public static get one(){
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return Vector2.unitVector2;
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}
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public static get unitX(){
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return Vector2.unitXVector;
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}
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public static get unitY(){
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return Vector2.unitYVector;
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}
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/**
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* 从两个值构造一个带有X和Y的二维向量。
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* @param x 二维空间中的x坐标
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* @param y 二维空间的y坐标
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*/
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constructor(x? : number, y?: number){
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this.x = x ? x : 0;
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this.y = y ? y : this.x;
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}
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/**
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*
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* @param value1
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* @param value2
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*/
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public static add(value1: Vector2, value2: Vector2){
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let result: Vector2 = new Vector2(0, 0);
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result.x = value1.x + value2.x;
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result.y = value1.y + value2.y;
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return result;
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}
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/**
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*
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* @param value1
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* @param value2
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*/
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public static divide(value1: Vector2, value2: Vector2){
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let result: Vector2 = new Vector2(0, 0);
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result.x = value1.x / value2.x;
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result.y = value1.y / value2.y;
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return result;
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}
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/**
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*
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* @param value1
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* @param value2
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*/
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public static multiply(value1: Vector2, value2: Vector2){
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let result: Vector2 = new Vector2(0, 0);
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result.x = value1.x * value2.x;
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result.y = value1.y * value2.y;
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return result;
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}
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/**
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*
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* @param value1
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* @param value2
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*/
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public static subtract(value1: Vector2, value2: Vector2){
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let result: Vector2 = new Vector2(0, 0);
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result.x = value1.x - value2.x;
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result.y = value1.y - value2.y;
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return result;
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}
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/** 变成一个方向相同的单位向量 */
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public normalize(){
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let val = 1 / Math.sqrt((this.x * this.x) + (this.y * this.y));
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this.x *= val;
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this.y *= val;
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}
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/** 返回它的长度 */
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public length(){
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return Math.sqrt((this.x * this.x) + (this.y * this.y));
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}
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/** 对x和y值四舍五入 */
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public round(): Vector2{
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return new Vector2(Math.round(this.x), Math.round(this.y));
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}
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/**
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* 创建一个新的Vector2
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* 它包含来自另一个向量的标准化值。
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* @param value
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*/
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public static normalize(value: Vector2){
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let val = 1 / Math.sqrt((value.x * value.x) + (value.y * value.y));
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value.x *= val;
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value.y *= val;
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return value;
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}
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/**
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* 返回两个向量的点积
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* @param value1
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* @param value2
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*/
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public static dot(value1: Vector2, value2: Vector2): number{
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return (value1.x * value2.x) + (value1.y * value2.y);
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}
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/**
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* 返回两个向量之间距离的平方
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* @param value1
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* @param value2
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*/
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public static distanceSquared(value1: Vector2, value2: Vector2){
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let v1 = value1.x - value2.x, v2 = value1.y - value2.y;
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return (v1 * v1) + (v2 * v2);
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}
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/**
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*
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* @param value1
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* @param min
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* @param max
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*/
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public static clamp(value1: Vector2, min: Vector2, max: Vector2){
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return new Vector2(MathHelper.clamp(value1.x, min.x, max.x),
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MathHelper.clamp(value1.y, min.y, max.y));
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}
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/**
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* 包含指定向量的线性插值
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* @param value1 第一个向量
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* @param value2 第二个向量
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* @param amount 权重值(0.0到1.0之间)
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*/
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public static lerp(value1: Vector2, value2: Vector2, amount: number){
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return new Vector2(MathHelper.lerp(value1.x, value2.x, amount), MathHelper.lerp(value1.y, value2.y, amount));
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}
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/**
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*
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* @param position
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* @param matrix
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*/
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public static transform(position: Vector2, matrix: Matrix2D){
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return new Vector2((position.x * matrix.m11) + (position.y * matrix.m21), (position.x * matrix.m12) + (position.y * matrix.m22));
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}
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/**
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* 返回两个向量之间的距离
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* @param value1
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* @param value2
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*/
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public static distance(value1: Vector2, value2: Vector2){
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let v1 = value1.x - value2.x, v2 = value1.y - value2.y;
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return Math.sqrt((v1 * v1) + (v2 * v2));
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}
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/**
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* 矢量反演的结果
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* @param value
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*/
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public static negate(value: Vector2){
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let result: Vector2 = new Vector2();
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result.x = -value.x;
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result.y = -value.y;
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return result;
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}
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}
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}
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