Esempio n. 1
0
        RectangleF GetZoomCrop()
        {
            RectangleF box = SalientBoundingBox();

            var bounds = new RectangleF(new PointF(0, 0), ImageSize);

            //Clip box to original image bounds
            box = PolygonMath.ClipRectangle(box, bounds);

            //Crop close
            var copySize = PolygonMath.ScaleOutside(box.Size, TargetSize);

            //Clip to bounds.
            return(PolygonMath.ClipRectangle(PolygonMath.ExpandTo(box, copySize), bounds));
        }
Esempio n. 2
0
        protected override RequestedAction LayoutImage(ImageState s)
        {
            //Only activated if both width and height are specified, and mode=crop.
            if (s.settings.Mode != FitMode.Crop || s.settings.Width < 0 || s.settings.Height < 0)
            {
                return(RequestedAction.None);
            }

            //Calculate bounding box for all coordinates specified.
            double[] focus = NameValueCollectionExtensions.GetList <double>(s.settings, "c.focus", null, 2, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72);
            if (focus == null)
            {
                return(RequestedAction.None);
            }
            RectangleF box = PolygonMath.GetBoundingBox(focus);

            var bounds = new RectangleF(new PointF(0, 0), s.originalSize);

            //Clip box to original image bounds
            box = PolygonMath.ClipRectangle(box, bounds);

            var targetSize = new SizeF(s.settings.Width, s.settings.Height);

            SizeF copySize;

            //Now, we can either crop as closely as possible or as loosely as possible.
            if (NameValueCollectionExtensions.Get <bool>(s.settings, "c.zoom", false) && box.Width > 0 && box.Height > 0)
            {
                //Crop close
                copySize = PolygonMath.ScaleOutside(box.Size, targetSize);
            }
            else
            {
                //Crop minimally
                copySize = PolygonMath.ScaleInside(targetSize, bounds.Size);
                //Ensure it's outside the box
                if (!PolygonMath.FitsInside(box.Size, copySize))
                {
                    copySize = PolygonMath.ScaleOutside(box.Size, copySize);
                }
            }
            //Clip to bounds.
            box = PolygonMath.ClipRectangle(PolygonMath.ExpandTo(box, copySize), bounds);

            s.copyRect = box;

            ///What is the vertical and horizontal aspect ratio different in result pixels?
            var padding = PolygonMath.ScaleInside(box.Size, targetSize);

            padding = new SizeF(targetSize.Width - padding.Width, targetSize.Height - padding.Height);


            //So, if we haven't met the aspect ratio yet, what mode will we pass on?
            var finalmode = NameValueCollectionExtensions.Get <FitMode>(s.settings, "c.finalmode", FitMode.Pad);

            //Crop off 1 or 2 pixels instead of padding without worrying too much
            if (finalmode == FitMode.Pad && padding.Width + padding.Height < 3)
            {
                finalmode = FitMode.Crop;
            }

            s.settings.Mode = finalmode;

            return(RequestedAction.None);
        }