PDFsharp & MigraDoc Foundation

// Bounding box lays always at (0,0) <-- Nope! it follows the viewbox
            XRect bbox = new XRect(brush.Viewbox.X, brush.Viewbox.Y, brush.Viewbox.Width, brush.Viewbox.Height);

//change the transform to a translate since that's all this did, and add in the viewbox offset, however add 2 to avoid the dodgy pixel... I guess I'm doing this wrong but it works and I can't seem to fix it elsewhere
            matrix.TranslatePrepend((brush.Viewport.X - brush.Viewbox.X)+2, (brush.Viewport.Y - brush.Viewbox.Y)+2);

...
PdfTilingPattern BuildPattern(ImageBrush brush, XMatrix transform)
        {
            // Bounding box lays always at (0,0)
            XRect bbox = new XRect(0, 0, brush.Viewport.Width, brush.Viewport.Height);
#if true
            XMatrix matrix = transform;

            //adjust pixel width dimensions from viewBox to match the units of the viewport
            var translateOffsetX = brush.Viewport.Width * brush.Viewbox.X / brush.Viewbox.Width * -1;
            var translateOffsetY = brush.Viewport.Height * brush.Viewbox.Y / brush.Viewbox.Height * -1;
            matrix.Prepend(new XMatrix(1, 0, 0, 1, brush.Viewport.X + translateOffsetX, brush.Viewport.Y + translateOffsetY));

            if (brush.Transform != null)
            {
                matrix.Prepend(new XMatrix(brush.Transform.Matrix.m11, brush.Transform.Matrix.m12, brush.Transform.Matrix.m21,
                brush.Transform.Matrix.m22, brush.Transform.Matrix.offsetX, brush.Transform.Matrix.offsetY));
            }
#else
      double c = 1;
      XMatrix matrix = new XMatrix(1 * c, 0, 0, 1 * c, brush.Viewport.X * c, brush.Viewport.Y * c); // HACK: 480
      XMatrix t = transform;
      //t.Invert();
      t.Prepend(matrix);
      //t.TranslateAppend(brush.Viewport.X , brush.Viewport.Y);
      //matrix.Append(t);
      matrix = t;
#endif
            double xStep = brush.Viewport.Width + 1;
            double yStep = brush.Viewport.Height + 1;

            // PdfTilingPattern
...