TouchPullView.java 文件源码

private void initTangentInterpolator() {
    if (mCircleRadius > 0 && (mDragHeight >= mCircleRadius * 2)) {
        // The run // 270~360~mTangentAngle=>0~90~mTangentAngle
        // When drag double radius the angle = MIN_RUN_ANGLE
        mTangentInterpolator = PathInterpolatorCompat.create((mCircleRadius * 2) / mDragHeight,
                MIN_RUN_ANGLE / (MIN_RUN_ANGLE + mTangentAngle));
    }
}