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

Matrix2d() [4/4] Matrix2d::Matrix2d ( const Vector2d &  e0, const Vector2d &  e1, const Point2d &  origin  ) 给定两坐标轴矢量和原点构造 相对于绝对坐标系构造出新的坐标系矩阵。 如果这两个坐标轴矢量不正交，则构造出仿射坐标系，否则为正交坐标系 参数 e0 X轴一个单位的矢量 e1 Y轴一个单位的矢量 origin 新坐标系的原点 函数调用图: