angle coordSystem coordSystem det dx dy getCoordSystem hasMirror inverse invert isConformal isEqualTo isIdentity isInvertible isOrtho kIdentity m11 m12 m21 m22 Matrix2d Matrix2d Matrix2d Matrix2d mirroring mirroring operator!= operator* operator* operator* operator*= operator*= operator/ operator/= operator== postMultBy preMultBy rotation scale scaleBy scaleBy scaleX scaleY scaling scaling set setCoordSystem setToIdentity setToMirroring setToMirroring setToProduct setToRotation setToScaling setToScaling setToShearing setToTranslation shearing transformPoints transformVectors transformWith2P translation

shearing() Matrix2d Matrix2d::shearing ( float  sx, float  sy, const Point2d &  pnt = Point2d::kOrigin()  ) static 得到错切变换矩阵 参数 sx 在X方向上的错切比例 sy 在Y方向上的错切比例，如果为0则取为sx pnt 错切基点，在该点上的点变换后位置不变 返回 新的变换矩阵 函数调用图: 这是这个函数的调用关系图: