utils MathHelper.ts

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  /**
 * 数学辅助函数
 */

export class MathHelper {
  /**
   * 保留指定小数位数
   */
  static round(value: number, decimals: number = 2): number {
    const factor = Math.pow(10, decimals);
    return Math.round(value * factor) / factor;
  }
  
  /**
   * 线性插值
   */
  static lerp(start: number, end: number, t: number): number {
    return start + (end - start) * t;
  }
  
  /**
   * 限制值在范围内
   */
  static clamp(value: number, min: number, max: number): number {
    return Math.min(Math.max(value, min), max);
  }
}