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Initial MML Documentation work.

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This commit is contained in:
Merlijn Wajer 2011-10-11 16:36:11 +02:00
parent e60a542c45
commit b9fe547613
5 changed files with 488 additions and 65 deletions
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45
Doc/Makefile
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@ -1,39 +1,16 @@
.PHONY: default clean tarball
.PHONY: default clean intro psbook html all
core = client ocr
intro_ := mufasa_intro
psbook_ := mufasa_ps_handbook
book_ := mufasa_handbook
dev_ := mufasa_developers
default: tex
all:
@python docgen.py `echo $(core) | sed -r \
's/(\w+)/..\/Units\/MMLCore\/\1.pas/g'` > /dev/null
@make -C sphinx/ html
clean:
rm -rvf $(intro_)
rm -rvf $(psbook_)
rm -rvf $(book_)
rm -rvf $(dev_)
find -iname "$(intro_)*" | grep -v svn | grep -v tex | xargs rm -vf
find -iname "$(psbook_)*" | grep -v svn | grep -v tex | xargs rm -vf
find -iname "$(book_)*" | grep -v svn | grep -v tex | xargs rm -vf
find -iname "$(dev_)*" | grep -v svn | grep -v tex | xargs rm -vf
$(MAKE) -C Pics/ clean
@rm -f `echo $(core) | sed -r 's/(\w+)/sphinx\/\1.rst/g'`
@make -C sphinx/ clean
tex:
$(MAKE) -C Pics/
texi2pdf $(intro_).tex #--silent
texi2pdf $(psbook_).tex #--silent
texi2pdf $(book_).tex #--silent
texi2pdf $(dev_).tex #--silent
html:
$(MAKE) -C Pics/
latex2html $(intro_).tex -local_icons -nofootnode
latex2html $(psbook_).tex -local_icons -nofootnode
latex2html $(book_).tex -local_icons -nofootnode
latex2html $(dev_).tex -local_icons -nofootnode
sphinx:
$(MAKE) -C Pics/
$(MAKE) html -C sphinx
tarball:
@$(MAKE) all
@tar cjf doc.tar.bz2 -C sphinx/_build/ html

39
Doc/Makefile_outdated Normal file
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@ -0,0 +1,39 @@
.PHONY: default clean intro psbook html all
intro_ := mufasa_intro
psbook_ := mufasa_ps_handbook
book_ := mufasa_handbook
dev_ := mufasa_developers
default: tex
clean:
rm -rvf $(intro_)
rm -rvf $(psbook_)
rm -rvf $(book_)
rm -rvf $(dev_)
find -iname "$(intro_)*" | grep -v svn | grep -v tex | xargs rm -vf
find -iname "$(psbook_)*" | grep -v svn | grep -v tex | xargs rm -vf
find -iname "$(book_)*" | grep -v svn | grep -v tex | xargs rm -vf
find -iname "$(dev_)*" | grep -v svn | grep -v tex | xargs rm -vf
$(MAKE) -C Pics/ clean
tex:
$(MAKE) -C Pics/
texi2pdf $(intro_).tex #--silent
texi2pdf $(psbook_).tex #--silent
texi2pdf $(book_).tex #--silent
texi2pdf $(dev_).tex #--silent
html:
$(MAKE) -C Pics/
latex2html $(intro_).tex -local_icons -nofootnode
latex2html $(psbook_).tex -local_icons -nofootnode
latex2html $(book_).tex -local_icons -nofootnode
latex2html $(dev_).tex -local_icons -nofootnode
sphinx:
$(MAKE) -C Pics/
$(MAKE) html -C sphinx

22
Doc/docgen.py Normal file
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@ -0,0 +1,22 @@
import re
from sys import argv
files = argv[1:]
commentregex = re.compile('\(\*.+?\*\)', re.DOTALL)
for file in files:
print file
f = open(file)
p = file.rfind('/')
filetrim = file[p+1:]
p = filetrim.rfind('.pas')
filetrim2 = filetrim[:p]
o = open('sphinx/mmlref/%s.rst' % filetrim2, 'w+')
c = ''.join([x for x in f])
res = commentregex.findall(c)
for y in res:
o.write(y[2:][:-2])
o.close()
f.close()

73
Units/MMLCore/client.pas
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@ -34,10 +34,31 @@ uses
{$IFDEF MSWINDOWS} os_windows {$ENDIF}
{$IFDEF LINUX} os_linux {$ENDIF};
{
TClient is a full-blown instance of the MML.
It binds all the components together.
}
(*
Client Class
============
The ``TClient`` class is the class that glues all other MML classes together
into one usable class. Internally, quite some MML classes require other MML
classes, and they access these other classes through their "parent"
``TClient``
class.
An image tells more than a thousands words:
.. image:: ../../Pics/Client_Classes.png
And the class dependency graph: (An arrow indicates a dependency)
.. image:: ../../Pics/client_classes_dependencies.png
The client class does not do much else except creating the classes when it
is
created and destroying the classes when it is being destroyed.
*)
type
@ -57,9 +78,31 @@ type
destructor Destroy; override;
end;
(*
Properties:
- IOManager
- MFiles
- MFinder
- MBitmaps
- MDTMs
- MOCR
- WriteLnProc
*)
implementation
(*
TClient.WriteLn
~~~~~~~~~~~~~~~
.. code-block:: pascal
procedure TClient.WriteLn(s: string);
*)
procedure TClient.WriteLn(s: string);
begin
@ -69,6 +112,17 @@ begin
mDebugLn(s);
end;
(*
TClient.Create
~~~~~~~~~~~~~~
.. code-block:: pascal
constructor TClient.Create(const plugin_dir: string = ''; const UseIOManager : TIOManager = nil);
*)
// Possibly pass arguments to a default window.
constructor TClient.Create(const plugin_dir: string = ''; const UseIOManager : TIOManager = nil);
begin
@ -86,6 +140,17 @@ begin
MOCR := TMOCR.Create(self);
end;
(*
TClient.Destroy
~~~~~~~~~~~~~~~
.. code-block:: pascal
destructor TClient.Destroy;
*)
destructor TClient.Destroy;
begin
if FOwnIOManager then

346
Units/MMLCore/ocr.pas
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@ -33,6 +33,18 @@ uses
graphtype, intfgraphics,graphics;
{End To-Remove unit}
(*
.. _mmlref-ocr:
TMOCR Class
===========
The TMOCR class uses the powerful ``ocrutil`` unit to create some default but
useful functions that can be used to create and identify text. It also contains
some functions used in special cases to filter noise. Specifically, these are
all the ``Filter*`` functions.
*)
type
{ TMOCR }
@ -131,10 +143,18 @@ begin
inherited Destroy;
end;
{
(*
InitTOCR
~~~~~~~~
.. code-block:: pascal
function TMOCR.InitTOCR(const path: string): boolean;
InitTOCR loads all fonts in path
We don't do this in the constructor because we may not yet have the path.
}
*)
function TMOCR.InitTOCR(const path: string): boolean;
var
dirs: array of string;
@ -188,6 +208,7 @@ begin
Self.FFonts := NewFonts.Copy(Self.Client);
end;
{
Filter UpText by a very rough colour comparison / range check.
We first convert the colour to RGB, and if it falls into the following
@ -208,6 +229,16 @@ end;
We will match shadow as well; we need it later on.
}
(*
FilterUpTextByColour
~~~~~~~~~~~~~~~~~~~~
.. code-block:: pascal
procedure TMOCR.FilterUpTextByColour(bmp: TMufasaBitmap);
*)
procedure TMOCR.FilterUpTextByColour(bmp: TMufasaBitmap);
var
x, y,r, g, b: Integer;
@ -351,6 +382,16 @@ end;
We don't need to do this from the right bottom to left top.
}
(*
FilterUpTextByCharacteristics
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. code-block:: pascal
procedure TMOCR.FilterUpTextByCharacteristics(bmp: TMufasaBitmap; w,h: integer);
*)
procedure TMOCR.FilterUpTextByCharacteristics(bmp: TMufasaBitmap; w,h: integer);
var
x,y: Integer;
@ -457,7 +498,18 @@ begin
setlength(result,c);
end;
{ Remove anything but the shadows on the bitmap (Shadow = clPurple, remember?) }
(*
FilterShadowBitmap
~~~~~~~~~~~~~~~~~~
.. code-block:: pascal
procedure TMOCR.FilterShadowBitmap(bmp: TMufasaBitmap);
Remove anything but the shadows on the bitmap (Shadow = clPurple)
*)
procedure TMOCR.FilterShadowBitmap(bmp: TMufasaBitmap);
var
x,y:integer;
@ -473,13 +525,20 @@ begin
end;
end;
{
(*
FilterCharsBitmap
~~~~~~~~~~~~~~~~~
.. code-block:: pascal
procedure TMOCR.FilterCharsBitmap(bmp: TMufasaBitmap);
Remove all but uptext colours clWhite,clGreen, etc.
See constants above.
This assumes that the bitmap only consists of colour 0, and the other
constants founds above the functionss
}
constants founds above the functions
*)
procedure TMOCR.FilterCharsBitmap(bmp: TMufasaBitmap);
var
x,y: integer;
@ -509,6 +568,16 @@ end;
{
}
(*
getTextPointsIn
~~~~~~~~~~~~~~~
.. code-block:: pascal
function TMOCR.getTextPointsIn(sx, sy, w, h: Integer; shadow: boolean;
var _chars, _shadows: T2DPointArray): Boolean;
This uses the two filters, and performs a split on the bitmap.
A split per character, that is. So we can more easily identify it.
@ -518,8 +587,8 @@ end;
noise; weird positions or boxes compared to the rest, etc.
*
Split each colours seperately, and combine only later, after removing noise.
*)
}
function TMOCR.getTextPointsIn(sx, sy, w, h: Integer; shadow: boolean;
var _chars, _shadows: T2DPointArray): Boolean;
var
@ -685,14 +754,20 @@ begin
Result := true;
end;
{
GetUpTextAtEx combines/uses the functions above.
(*
GetUpTextAtEx
~~~~~~~~~~~~~
It will identify each character, and also keep track of the previous
chars' final `x' bounds. If the difference between the .x2 of the previous
.. code-block:: pascal
function TMOCR.GetUpTextAtEx(atX, atY: integer; shadow: boolean): string;
GetUpTextAtEx will identify each character, and also keep track of the previous
chars' final *x* bounds. If the difference between the .x2 of the previous
character and the .x1 of the current character is bigger than 5, then there
was a space between them. (Add ' ' to result)
}
*)
function TMOCR.GetUpTextAtEx(atX, atY: integer; shadow: boolean): string;
var
@ -763,6 +838,17 @@ begin
end;
end;
(*
GetUpTextAt
~~~~~~~~~~~
.. code-block:: pascal
function TMOCR.GetUpTextAt(atX, atY: integer; shadow: boolean): string;
Retreives the (special) uptext.
*)
function TMOCR.GetUpTextAt(atX, atY: integer; shadow: boolean): string;
begin
@ -772,6 +858,18 @@ begin
result := GetUpTextAtEx(atX, atY, false);
end;
(*
GetTextATPA
~~~~~~~~~~~
.. code-block:: pascal
function TMOCR.GetTextATPA(const ATPA : T2DPointArray;const maxvspacing : integer; font: string): string;
Returns the text defined by the ATPA. Each TPA represents one character,
approximately.
*)
function TMOCR.GetTextATPA(const ATPA : T2DPointArray;const maxvspacing : integer; font: string): string;
var
b, lb: TBox;
@ -831,6 +929,17 @@ begin
end;
end;
(*
GetTextAt
~~~~~~~~~
.. code-block:: pascal
function TMOCR.GetTextAt(xs, ys, xe,ye, minvspacing, maxvspacing, hspacing,
color, tol: integer; font: string): string;
General text-finding function.
*)
function TMOCR.GetTextAt(xs, ys, xe,ye, minvspacing, maxvspacing, hspacing,
color, tol: integer; font: string): string;
var
@ -851,6 +960,17 @@ begin;
result := gettextatpa(STPA,maxvspacing,font);
end;
(*
GetTextAt (2)
~~~~~~~~~~~~~
.. code-block:: pascal
function TMOCR.GetTextAt(atX, atY, minvspacing, maxvspacing, hspacing,
color, tol, len: integer; font: string): string;
General text-finding function. Different parameters than other GetTextAt.
*)
function TMOCR.GetTextAt(atX, atY, minvspacing, maxvspacing, hspacing,
color, tol, len: integer; font: string): string;
var
@ -873,6 +993,19 @@ begin
end;
(*
TextToFontTPA
~~~~~~~~~~~~~
.. code-block:: pascal
function TMOCR.TextToFontTPA(Text, font: String; out w, h: integer): TPointArray;
Returns a TPA of a specific *Text* of the specified *Font*.
*)
function TMOCR.TextToFontTPA(Text, font: String; out w, h: integer): TPointArray;
var
@ -918,6 +1051,17 @@ begin
{ writeln('C: ' + inttostr(c)); }
end;
(*
TextToFontBitmap
~~~~~~~~~~~~~~~~
.. code-block:: pascal
function TMOCR.TextToFontBitmap(Text, font: String): TMufasaBitmap;
Returns a Bitmap of the specified *Text* of the specified *Font*.
*)
function TMOCR.TextToFontBitmap(Text, font: String): TMufasaBitmap;
var
TPA: TPointArray;
@ -968,3 +1112,179 @@ end;
end.
(*
.. _uptext-filter:
Uptext
======
To read the UpText, the TMOCR class applies several filters on the client data
before performing the actual OCR. We will take a look at the two filters first.
Filter 1: The Colour Filter
~~~~~~~~~~~~~~~~~~~~~~~~~~~
We first filter the raw client image with a very rough and tolerant colour
comparison / check.
We first convert the colour to RGB, and if it falls into the following
defined ranges, it may be part of the uptext. We also get the possible
shadows.
We will iterate over each pixel in the bitmap, and if it matches any of the
*rules* for the colour; we will set it to a constant colour which
represents this colour (and corresponding rule). Usually the *base*
colour. If it doesn't match any of the rules, it will be painted black.
We won't just check for colours, but also for differences between specific
R, G, B values. For example, if the colour is white; R, G and B should all
lie very close to each other. (That's what makes a colour white.)
The tolerance for getting the pixels is quite large. The reasons for the
high tolerance is because the uptext colour vary quite a lot. They're also
transparent and vary thus per background.
We will store/match shadow as well; we need it later on in filter 2.
To my knowledge this algorithm doesn't remove any *valid* points. It does
not remove *all* invalid points either; but that is simply not possible
based purely on the colour. (If someone has a good idea, let me know)
In code:
.. code-block:: pascal
for y := 0 to bmp.Height - 1 do
for x := 0 to bmp.Width - 1 do
begin
colortorgb(bmp.fastgetpixel(x,y),r,g,b);
if (r < ocr_Limit_Low) and (g < ocr_Limit_Low) and
(b < ocr_Limit_Low) then
begin
bmp.FastSetPixel(x,y, ocr_Purple);
continue;
end;
// Black if no match
bmp.fastsetpixel(x,y,0);
end;
Filter 2: The Characteristics Filter
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This second filter is easy to understand but also very powerful:
- It removes *all* false shadow pixels.
- It removes uptext pixels that can't be uptext according to specific
rules. These rules are specifically designed so that it will never
throw away proper points.
It also performs another filter right at the start, but we'll disregard that
filter for now.
Removing shadow points is trivial if one understands the following insight.
If there some pixel is shadow on *x, y*, then it's neighbour *x+1, y+1*
may not be a shadow pixel. A shadow is always only one pixel *thick*.
With this in mind, we can easily define an algorithm which removes all false
shadow pixels. In code:
.. code-block:: pascal
{
The tricky part of the algorithm is that it starts at the bottom,
removing shadow point x,y if x-1,y-1 is also shadow. This is
more efficient than the obvious way. (It is also easier to implement)
}
for y := bmp.Height - 1 downto 1 do
for x := bmp.Width - 1 downto 1 do
begin
// Is it shadow?
if bmp.fastgetpixel(x,y) <> clPurple then
continue;
// Is the point at x-1,y-1 shadow? If it is
// then x, y cannot be shadow.
if bmp.fastgetpixel(x,y) = bmp.fastgetpixel(x-1,y-1) then
begin
bmp.fastsetpixel(x,y,clSilver);
continue;
end;
if bmp.fastgetpixel(x-1,y-1) = 0 then
bmp.fastsetpixel(x,y,clSilver);
end;
We are now left with only proper shadow pixels.
Now it is time to filter out false Uptext pixels.
Realize:
- If *x, y* is uptext, then *x+1, y+1* must be either uptext or shadow.
In code:
.. code-block:: pascal
for y := bmp.Height - 2 downto 0 do
for x := bmp.Width - 2 downto 0 do
begin
if bmp.fastgetpixel(x,y) = clPurple then
continue;
if bmp.fastgetpixel(x,y) = clBlack then
continue;
// Is the other pixel also uptext?
// NOTE THAT IT ALSO HAS TO BE THE SAME COLOUR
// UPTEXT IN THIS CASE.
// I'm still not sure if this is a good idea or not.
// Perhaps it should match *any* uptext colour.
if (bmp.fastgetpixel(x,y) = bmp.fastgetpixel(x+1,y+1) ) then
continue;
// If it isn't shadow (and not the same colour uptext, see above)
// then it is not uptext.
if bmp.fastgetpixel(x+1,y+1) <> clPurple then
begin
bmp.fastsetpixel(x,y,clOlive);
continue;
end;
// If we make it to here, it means the pixel is part of the uptext.
end;
Identifying characters
~~~~~~~~~~~~~~~~~~~~~~
.. note::
This part of the documentation is a bit vague and incomplete.
To actually identify the text we split it up into single character and then
pass each character to the OCR engine.
In the function *getTextPointsIn* we will use both the filters mentioned above.
After these have been applied, we will make a bitmap that only contains the
shadows as well as a bitmap that only contains the uptext chars (not the
shadows)
Now it is a good idea to count the occurances of all colours
(on the character bitmap); we will also use this later on.
To split the characters we use the well known *splittpaex* function.
We will then sort the points for in each character TPA, as this makes
makes looping over them and comparing distances easier. We will also
calculate the bounding box of each characters TPA.
.. note::
Some more hackery is then used to seperate the characters and find
spaces; but isn't yet documented here.
Normal OCR
----------
.. note::
To do :-)
A large part is already explained above.
Most of the other OCR functions are simply used for plain identifying
and have no filtering tasks.
*)