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

isConformal() bool Matrix2d::isConformal ( float &  scaleX, float &  scaleY, float &  angle, bool &  isMirror, Vector2d &  reflex  ) const 得到比例、旋转、镜像成分 参数 [out] scaleX 矩阵的X方向放缩比例 [out] scaleY 矩阵的Y方向放缩比例 [out] angle 矩阵的旋转角度，弧度 [out] isMirror 矩阵中是否含有对称成分 [out] reflex 矩阵中的对称轴方向矢量(如果有对称成分) 返回 是否求解成功，矩阵的X轴和Y轴不垂直则失败 函数调用图: 这是这个函数的调用关系图: