Package com.jogamp.graph.font

Class FontScale

  • public class FontScale
extends Object
    Simple static font scale methods for unit conversions. PostScript - current DTP point system used e.g in CSS (Cascading Style Sheets). - 1 point = 1pt = 1/72in (cala) = 0.3528 mm - 1 pica = 1pc = 12pt= 1/6in (cala) = 4.233(3) mm

    • Constructor Summary

      Constructors 
      Constructor Description
      FontScale()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static float[] ppiToPPMM​(float[] ppi)
      Converts [1/inch] to [1/mm] in place
      static float[] ppiToPPMM​(float[] ppi, float[] res)
      Converts [1/inch] to [1/mm] into res storage
      static float[] ppmmToPPI​(float[] ppmm)
      Converts [1/mm] to [1/inch] in place
      static float[] ppmmToPPI​(float[] ppmm, float[] res)
      Converts [1/mm] to [1/inch] into res storage
      static float ptToInch​(float points)
      Converts the the given points size to inch, dividing by 72 points per inch.
      static float ptToMM​(float points)
      Converts the the given points size to mm, dividing by 72 * 25.4 points per inch.
      static float toPixels​(float points, float res_dpi)
      Converts typical font size in points and screen resolution in dpi (pixels-per-inch) to font size in pixels, which can be used for pixel-size font scaling operations.
      static float toPixels2​(float points, float res_ppmm)
      Converts typical font size in points and screen resolution in pixels (pixels-per-mm) to font size in pixels, which can be used for pixel-size font scaling operations.

    • Constructor Detail

      • FontScale

        public FontScale()

    • Method Detail

      • ptToInch

        public static float ptToInch​(float points)
        Converts the the given points size to inch, dividing by 72 points per inch. 
                 1 points = 1/72 inch

      • ptToMM

        public static float ptToMM​(float points)
        Converts the the given points size to mm, dividing by 72 * 25.4 points per inch. 
                 1 inch = 25.4 mm
         1 points = 1/72 inch
         1 points = 1/72 * 25.4 mm

      • toPixels

        public static float toPixels​(float points,
                             float res_dpi)
        Converts typical font size in points and screen resolution in dpi (pixels-per-inch) to font size in pixels, which can be used for pixel-size font scaling operations. 
                Font Scale Formula:
         1 points = 1/72 inch

         pixels = points / 72 * res_dpi
        Parameters:
        points - in points
        res_dpi - display resolution in pixels-per-inch
        Returns:
        pixelSize scale factor for font operations.
        See Also:
        toPixels2(float, float)

      • toPixels2

        public static float toPixels2​(float points,
                              float res_ppmm)
        Converts typical font size in points and screen resolution in pixels (pixels-per-mm) to font size in pixels, which can be used for pixel-size font scaling operations. 
                Font Scale Formula:
         1 inch = 25.4 mm
         1 points = 1/72 inch
         1 points = 1/72 * 25.4 mm

         pixels = points / 72 * 25.4 * res_ppmm
        Parameters:
        points - in points
        res_ppmm - display resolution in pixels-per-mm
        Returns:
        pixelSize scale factor for font operations.
        See Also:
        toPixels(float, float)

      • ppmmToPPI

        public static float[] ppmmToPPI​(float[] ppmm)
        Converts [1/mm] to [1/inch] in place
        Parameters:
        ppmm - float[2] [1/mm] value
        Returns:
        return [1/inch] value

      • ppmmToPPI

        public static float[] ppmmToPPI​(float[] ppmm,
                                float[] res)
        Converts [1/mm] to [1/inch] into res storage
        Parameters:
        ppmm - float[2] [1/mm] value
        res - the float[2] result storage
        Returns:
        return [1/inch] value, i.e. the given res storage

      • ppiToPPMM

        public static float[] ppiToPPMM​(float[] ppi)
        Converts [1/inch] to [1/mm] in place
        Parameters:
        ppi - float[2] [1/inch] value
        Returns:
        return [1/mm] value

      • ppiToPPMM

        public static float[] ppiToPPMM​(float[] ppi,
                                float[] res)
        Converts [1/inch] to [1/mm] into res storage
        Parameters:
        ppi - float[2] [1/inch] value
        res - the float[2] result storage
        Returns:
        return [1/mm] value, i.e. the given res storage