iTextSharp.text.pdf.parser.SimpleTextExtractionStrategy.RenderText C# (CSharp) Метод

        public virtual void RenderText(TextRenderInfo renderInfo)
        {
            bool firstRender = result.Length == 0;
            bool hardReturn = false;

            LineSegment segment = renderInfo.GetBaseline();
            Vector start = segment.GetStartPoint();
            Vector end = segment.GetEndPoint();

            if (!firstRender){
                Vector x0 = start;
                Vector x1 = lastStart;
                Vector x2 = lastEnd;

                // see http://mathworld.wolfram.com/Point-LineDistance2-Dimensional.html
                float dist = (x2.Subtract(x1)).Cross((x1.Subtract(x0))).LengthSquared / x2.Subtract(x1).LengthSquared;

                float sameLineThreshold = 1f; // we should probably base this on the current font metrics, but 1 pt seems to be sufficient for the time being
                if (dist > sameLineThreshold)
                    hardReturn = true;

                // Note:  Technically, we should check both the start and end positions, in case the angle of the text changed without any displacement
                // but this sort of thing probably doesn't happen much in reality, so we'll leave it alone for now
            }

            if (hardReturn){
                //System.out.Println("<< Hard Return >>");
                result.Append('\n');
            } else if (!firstRender){
                if (result[result.Length-1] != ' ' && renderInfo.GetText().Length > 0 && renderInfo.GetText()[0] != ' '){ // we only insert a blank space if the trailing character of the previous string wasn't a space, and the leading character of the current string isn't a space
                    float spacing = lastEnd.Subtract(start).Length;
                    if (spacing > renderInfo.GetSingleSpaceWidth()/2f){
                        result.Append(' ');
                        //System.out.Println("Inserting implied space before '" + renderInfo.GetText() + "'");
                    }
                }
            } else {
                //System.out.Println("Displaying first string of content '" + text + "' :: x1 = " + x1);
            }

            //System.out.Println("[" + renderInfo.GetStartPoint() + "]->[" + renderInfo.GetEndPoint() + "] " + renderInfo.GetText());
            result.Append(renderInfo.GetText());

            lastStart = start;
            lastEnd = end;
        }