watercolor books reviews

Fill Your Watercolor With Natures Light: Features Masking, Pouring & Spatering Techniques by Roland Roycraft

I don’t like this book, the description is rather vague.  The author’s 4-step method is as written in the title “masking, pouring, spattering, brushing”. It sounds simple enough as description, but not when you try to paint your own landscape (honestly, I have not tried this method, simply that this book doesn’t even get me excited to try it out). As a side note, I dislike masking liquid.

Atmosphere, Mood And Light: Paint a Watercolour Landscape in Minutes
by Keith Fenwick

cookbook style but extremely poorly written. A total lack of instruction, basically there is no work-in-progress photo. I don’t like the style of the author’s painting, which is too realistic for my taste but too unrealistic to be realistic.

lablgtk compile

ocamlc -I +lablgtk2 -o base lablgtk.cma gtkInit.cmo base.ml

windows installation:

cygwin standard installation (select also binutils)

ocaml-mingw

gtk+-win32-devel : 2.10 :

lablgtk2, read the install file

drawing cat’s eye

Here are extract of the book “The Complete Guide to Coloured Pencil Techniques”, this project looks interesting, especially for a cat lover like me. I’ll post some finished pictures later.

module

Please ignore all the posts tagged with “ocaml”, I’m just posting them here for my reference.

renaming module:  module Gr = Graphics;; (* all subsequent calls to Graphics will be Gr.xxx *)

named tuple: type tuple = {a : int; b : int}

string concatenation: ^

pattern guard: match x with SomePattern(a,b) [when  a = b] -> …

assert: assert (x=5);;

print:

prerr_endline (“radius is ” ^ (string_of_int radius));

eprintf “radius is %d\n” radius;

compilation: (in cgywin with binutils and gcc installed)

ocamlopt -c amodule.ml
ocamlopt -c bmodule.ml
ocamlopt -o hello amodule.cmx bmodule.cmx

with interface (inerface must be compild first)

ocamlc -c amodule.mli
ocamlopt -c amodule.ml

module extension

module List =
struct
include List
let rec optmap f = function
[] -> []
| hd :: tl -> match f hd with
None -> optmap f tl
| Some x -> x :: optmap f tl
end

usage: open Extensions…
List.optmap …