/// <summary>
/// Represents a chunk of text, it's orientation, and location relative to the orientation vector
/// </summary>
/// <param name="txt"></param>
/// <param name="startLoc"></param>
/// <param name="endLoc"></param>
/// <param name="charSpaceWidth"></param>
public TextChunkEx(string txt, iTextSharp.text.pdf.parser.Vector startLoc, iTextSharp.text.pdf.parser.Vector endLoc, float charSpaceWidth, iTextSharp.text.pdf.parser.LineSegment ascentLine, iTextSharp.text.pdf.parser.LineSegment decentLine)
{
m_text = txt;
m_startLocation = startLoc;
m_endLocation = endLoc;
m_charSpaceWidth = charSpaceWidth;
AscentLine = ascentLine;
DecentLine = decentLine;
m_orientationVector = m_endLocation.Subtract(m_startLocation);
if (m_orientationVector.Length == 0)
m_orientationVector = new Vector(1, 0, 0);
m_orientationVector = m_orientationVector.Normalize();
m_orientationMagnitude = (int)(Math.Atan2(m_orientationVector[iTextSharp.text.pdf.parser.Vector.I2], m_orientationVector[iTextSharp.text.pdf.parser.Vector.I1]) * 1000);
// see http://mathworld.wolfram.com/Point-LineDistance2-Dimensional.html
// the two vectors we are crossing are in the same plane, so the result will be purely
// in the z-axis (out of plane) direction, so we just take the I3 component of the result
iTextSharp.text.pdf.parser.Vector origin = new iTextSharp.text.pdf.parser.Vector(0, 0, 1);
m_distPerpendicular = (int)(m_startLocation.Subtract(origin)).Cross(m_orientationVector)[iTextSharp.text.pdf.parser.Vector.I3];
m_distParallelStart = m_orientationVector.Dot(m_startLocation);
m_distParallelEnd = m_orientationVector.Dot(m_endLocation);
}
