From c3ea5d343ccdc2945b6ee3bc157af66f89433fd9 Mon Sep 17 00:00:00 2001 From: giraffedata Date: Sat, 6 Mar 2021 18:13:34 +0000 Subject: miscellaneous update git-svn-id: http://svn.code.sf.net/p/netpbm/code/userguide@4032 9d0c8265-081b-0410-96cb-a4ca84ce46f8 --- pampaintspill.html | 11 ++++++++++- pnmtopng.html | 18 +++++++++--------- ppmspread.html | 26 +++++++++++++++++++++----- 3 files changed, 40 insertions(+), 15 deletions(-) diff --git a/pampaintspill.html b/pampaintspill.html index eeb1cac6..43e17ba3 100644 --- a/pampaintspill.html +++ b/pampaintspill.html @@ -2,7 +2,7 @@ Pampaintspill User Manual

pampaintspill

-Updated: 09 February 2020 +Updated: 06 March 2021
Table Of Contents @@ -17,6 +17,8 @@ pampaintspill - smoothly spill colors into the background [--wrap] [--all] [--downsample=number] [--power=number] [filename] +[-randomseed=integer] +

Minimum unique abbreviations of option are acceptable. You may use double hyphens instead of single hyphen to denote options. You may use @@ -101,6 +103,13 @@ command line options: the number of paint sources increases. Positive numbers (e.g., 1.0 and 2.0) make the paint sources stand out in the output image by pushing the gradients away from them. +

-randomseed=integer +

This is the seed for the random number generator that generates the + pixels. + +

Use this to ensure you get the same image on separate invocations. + +

This option was new in Netpbm 10.94 (March 2021). diff --git a/pnmtopng.html b/pnmtopng.html index 5067dd63..0c605c7f 100644 --- a/pnmtopng.html +++ b/pnmtopng.html @@ -145,14 +145,14 @@ command line options:

This causes pnmtopng to display information about the format of the output file. -

-downscale

This enables pnmtopng to scale maxvalues of more then 65535 to 16 bits. Since this means loss of image data, pnmtopng does not do it by default. -

-interlace

@@ -170,7 +170,7 @@ top, so the displayer could display each row of the image as it arrives and gradually paint down to the bottom. But with an interlaced image, the displayer can start by showing a low-resolution version of the image, then gradually improve the display as more data arrives. -

-alpha=filename @@ -182,7 +182,7 @@ in the PNG format. If it can represent the transparency information through a palette, it will do so in order to make a smaller PNG file. pnmtopng even sorts the palette so it can omit the opaque colors from the transparency part of the palette and save space for the palette. -

-transparent=color

@@ -216,7 +216,7 @@ color does not appear in the image, there will be no transparency. Causes pnmtopng to create a background color chunk in the PNG output which can be used for subsequent transparency channel or transparent color conversions. Specify color the same as for -transparent. -

-palette=palettefile @@ -255,13 +255,13 @@ case of this is when the image is created by simple hardware that doesn't have digital computational ability. Also, some simple programs that generate images from scratch do it with a gamma transfer in which the gamma value is 1.0. -

-hist

Use this parameter to create a chunk that specifies the frequency (or histogram) of the colors in the image. -

-text=filename @@ -310,7 +310,7 @@ key for the text string starts with "A" or "T". This odd exception exists for backward compatibility; we don't know why the program was originally designed this way, except that the distinction was meant to roughly identify the keys "Author" and "Title". -

-rgb=chroma_list @@ -490,7 +490,7 @@ resulting PNG output is as similar to the Netpbm input as possible. For example, the PNG output will not be paletted and the transparency channel will be represented as a full transparency channel even if the information could be represented more succinctly with a transparency chunk. -

-libversion diff --git a/ppmspread.html b/ppmspread.html index 8ffaf167..e03c3f95 100644 --- a/ppmspread.html +++ b/ppmspread.html @@ -2,7 +2,7 @@ Ppmspread User Manual

ppmspread

-Updated: 20 November 2008 +Updated: 06 March 2021
Table Of Contents @@ -13,6 +13,8 @@ ppmspread - displace a PPM image's pixels by a random amount

SYNOPSIS

ppmspread amount [ppmfile] +[-randomseed=integer] +

DESCRIPTION

@@ -33,11 +35,25 @@ identical output.

OPTIONS

There are no command line options defined specifically -for ppmspread, but it recognizes the options common to all -programs based on libnetpbm (See -Common Options.) +

In addition to the options common to all programs based on libnetpbm +(most notably -quiet, see +Common Options), ppmspread recognizes the following +command line options: + +

-randomseed=integer + +

This is the seed for the random number generator that generates the +pixels. + +