reference axis and angle 参数轴和角度
Creates an instance of a 3-d rotation using the specified axis and Angle.
使用指定的轴和角度创建三维旋转的实例。
If your foot is at a right Angle to your outstretched leg and does not dangle, you have a low ankle-joint axis and will be more comfortable in flat shoes than in high heels.
如果你的脚和你伸直的腿成直角,且没有晃荡,那么说明你有一个较低的踝关节,你穿平底鞋会比穿高跟鞋更舒适。
Transform.postRotate(float angle, float ax, float ay, float az): Rotates the object with the given angle around the axis that goes through (0, 0, 0) and (ax, ay, az).
postRotate(float angle, float ax, float ay, float az):按给定角度绕穿过(0, 0, 0)和(ax, ay, az)的轴旋转对象。
Another way to represent a point in a plane is I've got a radius and I've got an angle from the x-axis, right, and that's a standard thing you might do.
平面上面的点的方法,也就是极坐标,上面那种方法其实是,如果你们喜欢我这么说的话,笛卡尔坐标表示法。
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