PDFBox 的 getXDirAdj() 方法返回哪个度量单位

Question

I am using the PDFBox to extract the character coordinates from the read PDF. However, I can't identify the unit of measurement of the value returned by the getXDirAdj () and getYDirAdj () methods?

@Override
protected void processTextPosition(TextPosition text) {
        String tChar = text.getCharacter();
        System.out.println("String[" + text.getXDirAdj() + ","
                + text.getYDirAdj() + " fs=" + text.getFontSize() + " xscale="
                + text.getXScale() + " height=" + text.getHeightDir() + " space="
                + text.getWidthOfSpace() + " width="
                + text.getWidthDirAdj() + "]" + text.getCharacter());
}

Answer 1

1. 1 unit = 1/72 inch

2. "how to obtain the rotation of the character read": from the ExtractText.java tool:

    static int getAngle(TextPosition text) { Matrix m = text.getTextMatrix().clone(); m.concatenate(text.getFont().getFontMatrix()); return (int) Math.round(Math.toDegrees(Math.atan2(m.getShearY(), m.getScaleY()))); }