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Simba/Doc/sphinx/scriptref/bitmaps.rst
2011-09-28 13:17:01 +02:00

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.. _scriptref-bitmaps:
Bitmaps
=======
A bitmap in Simba is simply a two dimensional *field of colours*. These colours
can all be the same, or they can be of different colours. Simba features
functions to create, manipulate and search for bitmaps.
.. INSERT BITMAP EXAMPLE HERE (Picture, etc)
The bitmaps are - just as files - represented as integer in Simba (they point to
a list of bitmaps, and the value of the integer is the position in the list).
So typically, when referring to bitmaps in Simba, you simply represent them as
an integer:
.. code-block:: pascal
var bmp, x, y: integer;
begin
bmp := CreateBitmap(10, 10); // Create a bitmap of size (10, 10)
if FindBitmapIn(bmp, x, y, 0, 0, 300, 300) then
writeln('Found it!');
FreeBitmap(bmp); // Don't forget to free it when we are done.
end;
Note that the previous example doesn't make a lot of sense as the bitmap has
only been created and not filled with any colours, they are as of yet,
undefined. You can also create bitmaps from screenshots and load them when your
script starts using the :ref:`scriptref-bitmapfromstring` function, or
simple store them as files and load them using the :ref:`scriptref-loadbitmap`
function.
Word of caution on bitmap creation
----------------------------------
Bitmaps in Simba are internally all instances of *TMufasaBitmap*. Scripts should
generally access bitmaps using their *handle*: an integer. All functions
referenced here either require a bitmap *handle* or return one.
If you want to gain more access over a specific bitmap, see the
*GetMufasaBitmap* function. It is highly unrecommended to create bitmaps like
this, because Simba will not free them automatically for you. (There's no
problem doing it like this if you only want to perform operations on it and then
free it again)
.. code-block:: pascal
var bmp: TMufasaBitmap;
begin
bmp := TMufasBitmap.Create;
end;
Because there is no way to get a *handle* to this bitmap; as it will not be
managed by Simba internally. (All Bitmaps created by *CreateBitmap* are managed
by Simba, if you don't know what this means: you generally want Simba to manage
the bitmaps)
If you still want access to the TMufasaBitmap, use *GetMufasaBitmap*, described
below.
GetMufasaBitmap
---------------
.. code-block:: pascal
function GetMufasaBitmap(bmp : integer) : TMufasaBitmap;
Returns the *TMufasaBitmap* for the given bitmap. They both reference the same
bitmap. TMufasaBitmap is a more advanced interface to bitmaps in Simba.
There is no way to get a *internal* (integer)
reference to a bitmap if you create it with TMufasaBitmap.Create; so the
recommended way is to use *CreateBitmap* to get the integer reference/handle and
then call this function to get the class reference.
.. code-block:: pascal
var bmp: TMufasaBitmap;
bmph: integer;
begin;
bmph := CreateBitmap(100, 100);
bmp := GetMufasaBitmap(bmph);
bmp.SetSize(150,150); // also changes bmph, as they are the same bitmap.
end;
.. _scriptref-createbitmapstring:
CreateBitmapString
------------------
.. code-block:: pascal
function CreateBitmapString(bmp : integer) : string;
Creates a string for the given bitmap, you can use this to save a bitmap for
later us, for example loading it again using :ref:`scriptref-bitmapfromstring`.
.. _scriptref-createbitmap:
CreateBitmap
------------
.. code-block:: pascal
function CreateBitmap(w,h :integer) : integer;
Create a bitmap with width *h* and height *h*.
Returns the reference to the created bitmap.
.. _scriptref-freebitmap:
FreeBitmap
----------
.. code-block:: pascal
procedure FreeBitmap(Bmp : integer);
Free the bitmap. You should do this when you no longer need the bitmap.
Be careful when working with bitmaps: not freeing it when you no longer need it
leads to memory leaks, which will eventually make your script crash. (Unless you
stop it in time, in which case Simba will free the bitmaps for you)
.. _scriptref-savebitmap:
SaveBitmap
----------
.. code-block:: pascal
procedure SaveBitmap(Bmp : integer; path : string);
Save the given bitmap to the specified path.
.. _scriptref-bitmapfromstring:
BitmapFromString
----------------
.. code-block:: pascal
function BitmapFromString(Width,Height : integer; Data : string): integer;
Load a bitmap from the given string. This command is usually generated with the
Bitmap to String feature in Simba.
.. _scriptref-loadbitmap:
LoadBitmap
----------
.. code-block:: pascal
function LoadBitmap(Path : string) : integer;
Load a bitmap from a path to a file. Formats known to work are BMP and PNG
images.
.. _scriptref-setbitmapsize:
SetBitmapSize
-------------
.. code-block:: pascal
procedure SetBitmapSize(Bmp,NewW,NewH : integer);
Change the size of the bitmap.
Previous data will be preserved (if possible), so enlarging the bitmap won't
destroy the old data, but shrinking it will inevitably destroy some data.
(Everything that falls out of the new bounds)
.. _scriptref-getbitmapsize:
GetBitmapSize
-------------
.. code-block:: pascal
procedure GetBitmapSize(Bmp : integer; var BmpW,BmpH : integer);
Returns the size of the bitmap in *BmpW*, *BmpH*.
.. _scriptref-stretchbitmapresize:
StretchBitmapResize
-------------------
.. code-block:: pascal
procedure StretchBitmapResize(Bmp,NewW,NewH : integer);
.. _scriptref-createmirroredbitmap:
CreateMirroredBitmap
--------------------
.. code-block:: pascal
function CreateMirroredBitmap(Bmp : integer) : integer;
.. _scriptref-createmirroredbitmapex:
CreateMirroredBitmapEx
----------------------
.. code-block:: pascal
function CreateMirroredBitmapEx(Bmp : integer; MirrorStyle : TBmpMirrorStyle) : integer;
.. _scriptref-fastsetpixel:
FastSetPixel
------------
.. code-block:: pascal
procedure FastSetPixel(bmp,x,y : integer; Color : TColor);
Set the pixel on the bitmap at position x, y to *color*.
.. _scriptref-fastsetpixels:
FastSetPixels
-------------
.. code-block:: pascal
procedure FastSetPixels(bmp : integer; TPA : TPointArray; Colors : TIntegerArray);
Set the pixels on the bitmap at position TPA[index] to Colors[index].
.. _scriptref-fastgetpixel:
FastGetPixel
------------
.. code-block:: pascal
function FastGetPixel(bmp, x,y : integer) : TColor;
Return the colour of pixel on the bitmap, position specified by x, y.
.. _scriptref-fastgetpixels:
FastGetPixels
-------------
.. code-block:: pascal
function FastGetPixels(Bmp : integer; TPA : TPointArray) : TIntegerArray;
Return an array of the colours on the bitmap; positions specified by *TPA*.
.. _scriptref-getbitmapareacolors:
GetBitmapAreaColors
-------------------
.. code-block:: pascal
function GetBitmapAreaColors(bmp,xs, ys, xe, ye: Integer): T2DIntegerArray;
Returns all the colours in the area defined by (*xs*, *xy*, *xe*, *ye*) on the
bitmap in a two dimensions integer array.
.. _scriptref-fastdrawclear:
FastDrawClear
-------------
.. code-block:: pascal
procedure FastDrawClear(bmp : integer; Color : TColor);
Draw *Color* on every pixel on the bitmap.
.. _scriptref-fastdrawtransparent:
FastDrawTransparent
-------------------
.. code-block:: pascal
procedure FastDrawTransparent(x, y: Integer; SourceBitmap, TargetBitmap: Integer);
.. _scriptref-setransparentcolor:
SetTransparentColor
-------------------
.. code-block:: pascal
procedure SetTransparentColor(bmp : integer; Color : TColor);
.. _scriptref-getransparentcolor:
GetTransparentColor
-------------------
.. code-block:: pascal
function GetTransparentColor(bmp: integer) : TColor;
.. _scriptref-fastreplacecolor:
FastReplaceColor
----------------
.. code-block:: pascal
procedure FastReplaceColor(Bmp : integer; OldColor,NewColor : TColor);
.. _scriptref-copyclienttobitmap:
CopyClientToBitmap
------------------
.. code-block:: pascal
procedure CopyClientToBitmap(bmp, xs, ys, xe, ye: Integer);
Copy client area *xs, ys, xe, ye* to specified bitmap.
.. _scriptref-bitmapfromclient:
BitmapFromClient
----------------
.. code-block:: pascal
function BitmapFromClient(const xs, ys, xe, ye: Integer): Integer;
Create a bitmap from the client. Area specified by *xs, ye, xe, ye*.
.. _scriptref-setbitmapname:
SetBitmapName
-------------
.. code-block:: pascal
procedure SetBitmapName(Bmp : integer; name : string);
Assign a name to the bitmap. Mainly for debugging purposes. (It will write the
name of the bitmap if it hasn't been freed.)
.. code-block:: pascal
program new;
var bmp: integer;
begin
bmp := CreateBitmap(10, 10);
SetBitmapName(bmp, 'We will not free this bitmap');
end.
// Simba will print what bitmap has not been freed (along with his long
// name)
.. _scriptref-findbitmap:
FindBitmap
----------
.. code-block:: pascal
function FindBitmap(bitmap: integer; var x, y: Integer): Boolean;
Searches for the Bitmap *bmp* on the entire client. Returns true if found.
If found, *x, y* specifies the position where the bitmap was found.
.. _scriptref-findbitmapin:
FindBitmapIn
------------
.. code-block:: pascal
function FindBitmapIn(bitmap: integer; var x, y: Integer; xs, ys, xe, ye: Integer): Boolean;
Searches for the Bitmap *bmp* on the client in the area defined by *xs,ys,xe,ye*.
Returns true if found. If found, *x, y* specifies the position where the bitmap
was found.
.. _scriptref-findbitmaptolerancein:
FindBitmapToleranceIn
---------------------
.. code-block:: pascal
function FindBitmapToleranceIn(bitmap: integer; var x, y: Integer; xs, ys, xe, ye: Integer; tolerance: Integer): Boolean;
Searches for the Bitmap *bmp* on the client in the area defined by *xs,ys,xe,ye*.
Tolerance defines the tolerance per pixel when matching bitmaps. See
:ref:`scriptref-CTS` for more information on tolerance.
Returns true if found. If found, *x, y* specifies the position where the bitmap
was found.
.. _scriptref-findbitmapspiral:
FindBitmapSpiral
----------------
.. code-block:: pascal
function FindBitmapSpiral(bitmap: Integer; var x, y: Integer; xs, ys, xe, ye: Integer): Boolean;
Searches for the Bitmap *bmp* on the client in the area defined by *xs,ys,xe,ye*.
Returns true if found. If found, *x, y* specifies the position where the bitmap
was found. Search starts from a point defined by *x, y*.
.. _scriptref-findbitmapsspiraltolerance:
FindBitmapsSpiralTolerance
--------------------------
.. code-block:: pascal
function FindBitmapsSpiralTolerance(bitmap: integer; x, y: Integer; var Points : TPointArray; xs, ys, xe, ye,tolerance: Integer): Boolean;
Searches for the Bitmap *bmp* on the client in the area defined by *xs,ys,xe,ye*.
Tolerance defines the tolerance per pixel when matching bitmaps. See
:ref:`scriptref-CTS` for more information on tolerance.
Search starts from a point defined by *x, y*.
Returns true if found. If found, each point in *TPA* specifies a match.
.. _scriptref-findbitmapspiraltolerance:
FindBitmapSpiralTolerance
-------------------------
.. code-block:: pascal
function FindBitmapSpiralTolerance(bitmap: integer; var x, y: Integer; xs, ys, xe, ye,tolerance : integer): Boolean;
Searches for the Bitmap *bmp* on the client in the area defined by *xs,ys,xe,ye*.
Tolerance defines the tolerance per pixel when matching bitmaps. See
:ref:`scriptref-CTS` for more information on tolerance.
Search starts from a point defined by *x, y*.
Returns true if found. If found, *x, y* specifies the position where the bitmap
was found.
.. _scriptref-rotatebitmap:
RotateBitmap
------------
.. code-block:: pascal
function RotateBitmap(bitmap: Integer; angle: Extended): Integer;
.. _scriptref-desaturatebitmap:
DesaturateBitmap
----------------
.. code-block:: pascal
function DesaturateBitmap(Bitmap : integer) : integer;
.. _scriptref-invertbitmap:
InvertBitmap
------------
.. code-block:: pascal
procedure InvertBitmap(Bitmap : integer);
.. _scriptref-copybitmap:
CopyBitmap
----------
.. code-block:: pascal
function CopyBitmap(Bitmap: integer) : integer)
Creates a copy of the *Bitmap*. Returns the bitmap copy.
.. _scriptref-greyscalebitmap:
GreyScaleBitmap
---------------
.. code-block:: pascal
function GreyScaleBitmap(bitmap : integer) : integer
Creates a copy of the bitmap, greyscaled.
.. _scriptref-brightnessbitmap:
BrightnessBitmap
----------------
.. code-block:: pascal
function BrightnessBitmap(Bitmap,br : integer) : integer;
Changes the brightness of a bitmap, intensity defined by *br*.
Returns a new bitmap with the brightness applied.
If you instead want to apply brightness to the current bitmap, see
:ref:`filter_apply_bitmap`
.. _scriptref-contrastbitmap:
ContrastBitmap
--------------
.. code-block:: pascal
function ContrastBitmap(bitmap : integer; co : extended) : integer;
Changes the constrast of a bitmap, returns a new bitmap with the contrast
applied.
.. _scriptref-posterizebitmap:
PosterizeBitmap
---------------
.. code-block:: pascal
function PosterizeBitmap(Bitmap : integer; po : integer) : integer;
Posterizes a bitmap, intensity defined by *po*; returns a new bitmap with the
posterisation applied.
.. _filter_apply_bitmap:
Applying a filter on the current bitmap
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. code-block:: pascal
var b: integer;
begin
// Dummy bitmap. You'll want something that's not just a blank bitmap.
B:=CreateBitmap(100,100);
// Apply the filter (Posterize in this case) without making a copy.
GetMufasaBitmap(b).Posterize(GetMufasaBitmap(b), 10);
// Always free your bitmaps when you no longer use them. :)
FreeBitmap(b);
end.
.. _scriptref-createmaskfrombitmap:
CreateMaskFromBitmap
--------------------
.. code-block:: pascal
function CreateMaskFromBitmap(Bitmap : integer) : TMask;
.. _scriptref-findmasktolerance:
FindMaskTolerance
-----------------
.. code-block:: pascal
function FindMaskTolerance(const mask: TMask; var x, y: Integer; xs,ys, xe, ye: Integer; Tolerance, ContourTolerance: Integer): Boolean;
.. _scriptref-findbitmapmasktolerance:
FindBitmapMaskTolerance
-----------------------
.. code-block:: pascal
function FindBitmapMaskTolerance(mask: Integer; var x, y: Integer; xs, ys, xe, ye: Integer; Tolerance, ContourTolerance: Integer): Boolean;
.. _scriptref-finddeformedbitmaptolerancein:
FindDeformedBitmapToleranceIn
-----------------------------
.. code-block:: pascal
function FindDeformedBitmapToleranceIn(bitmap: integer; var x,y: Integer; xs, ys, xe, ye: Integer; tolerance: Integer; Range: Integer; AllowPartialAccuracy: Boolean; var accuracy: Extended): Boolean;
.. _scriptref-drawtpabitmap:
DrawTPABitmap
-------------
.. code-block:: pascal
procedure DrawTPABitmap(bitmap: integer; TPA: TPointArray; Color: integer);
*Draws* a TPointArray on a bitmap. Each point in the TPointArray is *painted*
on the bitmap by setting the pixel on the bitmap (position defined by tpa point)
to *color*.
.. _scriptref-drawatpabitmap:
DrawATPABitmap
--------------
.. code-block:: pascal
procedure DrawATPABitmap(bitmap: integer; ATPA: T2DPointArray);
*Draws* a Array of TPointArray on a bitmap.
Each point in the TPointArray is *painted* on the bitmap by setting
the pixel on the bitmap (position defined by tpa point)
to a color. Colors differ per TPointArray (group).
.. _scriptref-drawatpabitmapex:
DrawATPABitmapEx
----------------
.. code-block:: pascal
procedure DrawATPABitmapEx(bitmap: integer; ATPA: T2DPointArray; Colors: TIntegerArray);
*Draws* a Array of TPointArray on a bitmap.
Each point in the TPointArray is *painted* on the bitmap by setting
the pixel on the bitmap (position defined by tpa point)
to a color. Colors are defined by *Colors*.
.. _scriptref-drawbitmap:
DrawBitmap
----------
.. code-block:: pascal
procedure DrawBitmap(Bmp: Integer; Dest: TCanvas; x, y: Integer);
Draw the bitmap to a TCanvas.
.. _scriptref-rectanglebitmap:
RectangleBitmap
---------------
.. code-block:: pascal
procedure RectangleBitmap(bitmap : integer; const box : TBox; Color : TColor);
.. _scriptref-floodfillbitmap:
FloodFillBitmap
---------------
.. code-block:: pascal
procedure FloodFillBitmap(bitmap : integer; const StartPoint : TPoint; const SearchCol,ReplaceCol : TColor);
.. _scriptref-calculatepixelshift:
CalculatePixelShift
-------------------
.. code-block:: pascal
function CalculatePixelShift(Bmp1,Bmp2 : Integer; CompareBox : TBox) : integer;
.. _scriptref-calculatepixeltolerance:
CalculatePixelTolerance
-----------------------
.. code-block:: pascal
function CalculatePixelTolerance(Bmp1,Bmp2 : Integer; CompareBox : TBox; CTS : integer) : extended;')