Function getRelativePositionFromEvent

  • getRelativePositionFromEvent(vec, rect): undefined | {
        x: number;
        y: number;
    }

  • 获得点击位置相对于 canvas 的坐标 如果输入参数不合法，或点击位置超出 canvas 的 clientRect 则返回 undefined

    Parameters

    • vec: Vec2

      事件坐标

    • rect: ICanvasRect

    Returns undefined | {
        x: number;
        y: number;
    }

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