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

coordSystem() [2/2] Matrix2d Matrix2d::coordSystem ( const Point2d &  origin, float  scaleX, float  scaleY = 0, float  angle = 0  ) static 返回给定原点、比例和旋转角度的坐标系 参数 origin 新坐标系的原点坐标 scaleX X轴的比例系数 scaleY Y轴的比例系数，为0则取为scaleX angle X轴的旋转角度，弧度 返回 新坐标系的矩阵 函数调用图: