org.hd.d.pg2k.webSvr.bgImg
Class BgImageUtils.Sine2DColourImageGen

java.lang.Object
  org.hd.d.pg2k.webSvr.bgImg.BgImageUtils.Sine2DColourImageGen

All Implemented Interfaces:

BgImageUtils.DynImageGen

Enclosing class:

BgImageUtils

public static final class BgImageUtils.Sine2DColourImageGen
extends java.lang.Object
implements BgImageUtils.DynImageGen

Makes 2D sine-plus-noise colour image. This is slowly varying, and light, so should be easy to read dark text against.

This may revert to mono dependending on the seed.

BgImageUtils.Sine2DColourImageGen

public BgImageUtils.Sine2DColourImageGen()

createImage

public java.awt.image.BufferedImage createImage(int seed)

Generate 2D sine-based colour with each colour distributed between max and min Y. The image parameters are mostly entirely derived from the seed.

Specified by:

createImage in interface BgImageUtils.DynImageGen

getRndCycles

private static int getRndCycles(java.util.Random pRnd)

Chose a number of cycles for the background pattern across the image; strictly positive. The result is always (much) less than the number of pixels, and always at least 1.

Parameters:

pRnd - the pseudo-random (repeatable) source; never null