Illustrator 中的全局坐标和画布坐标转换

        private class Point
        {
            public double Left { get; set; }
            public double Top { get; set; }
        }
        /// <summary>
        /// 转换为先对画布的坐标
        /// </summary>
        /// <param name="cp">需要转换的当前坐标</param>
        /// <param name="dp">画布坐标</param>
        /// <returns></returns>
        private Point GetRelativeCoord(Point cp, Point dp)
        {
            Point p = new Point { Left = cp.Left - dp.Left, Top = cp.Top - dp.Top };
            return p;
        }
        /// <summary>
        /// 根据相对画布坐标获得全局坐标
        /// </summary>
        /// <param name="cxdp">当前相对画布坐标</param>
        /// <param name="dp">画布坐标</param>
        /// <returns></returns>
        private Point SetRelativeCoord(Point cxdp, Point dp)
        {
            Point p = new Point { Left = cxdp.Left + dp.Left, Top = cxdp.Top + dp.Top };
            return p;
        }

//获得画布坐标
Illustrator.Artboard artb = iDocsys.Artboards[1];
Point dp = new Point { Left = artb.ArtboardRect[0], Top = artb.ArtboardRect[1] };

Point p = SetRelativeCoord(new Point { Left = l, Top = -600 }, dp);

Illustrator.TextFrame newTextFrame = duanlayer.TextFrames.Add();
newTextFrame.Contents = text;
newTextFrame.Left = p.Left;
newTextFrame.Top = p.Top;