AminetAminet
Search:
84538 packages online
About
Recent
Browse
Search
Upload
Setup
Services

dev/asm/ChunkyFunctions.lha

Mirror:Random
Showing:i386-arosgeneric
No screenshot available
Short:Clipped Chunky Line & Circlefunctions
Author:Holger.Hippenstiel AT gmx.de
Uploader:Holger Hippenstiel gmx de
Type:dev/asm
Version:1.2
Replaces:dev/asm/ChunkyFunctions.lha
Architecture:m68k-amigaos >= 2.0.0; generic
Distribution:Aminet
Kurz:Geklippte Linien & Kreisfunktionen
Date:2023-06-03
Download:http://aminet.net/dev/asm/ChunkyFunctions.lha - View contents
Readme:http://aminet.net/dev/asm/ChunkyFunctions.readme
Downloads:438

******************************************************************************
D0h, forgot to remove a debug-call in the beginning of ClippedChunkyCircle
(and the ChunkyExample Executable), could trash your chipram. Sorry for that.
For most of the CircleFunctions you need a 68020 or higher,
i've included 68000-versions for those cases.
ChunkyExample now also only need 68000.
******************************************************************************
Update: 8 new variants for really big circles which need full clipping
Had bug in variant-checking when clipping MinX&MinY (only if both X and Y
would go negative), most variants in that case wouldn't be used.
There was one missing clipping for MaxY in a loop.
Included FullChunkyCircle.s if you just want a fast & small-circleroutine
without all the bells & whistles. :)
I put some more comments in ClippedChunkyCircle to make it easier to see
what part does what.
The ClipLine-function could also be used for blitter-lines.
I've included a ChunkyExample executable, which draws lines on top and
circles on the bottom half, you need the rtgmaster.library and a display
with chunky pixels (CybergraphX, Picasso96, and so on).
http://aminet.net/driver/video/rtgmaster_user.lha
******************************************************************************

After checking the rtgmaster.lib and doing a fix for it:
http://aminet.net/driver/video/rtgmaster_asmfix.lha

I noticed the functions it got where quiet slow, here are some functions
i wrote somewhere around 1994-95 and where used for example for EGSTurbo.
I've tuned them a bit for speed & high-resolution compability.

The Functions are:
******************************************************************************
in ChunkyMultab.s
MakeChunkyMultab *** creates the Multiplication Table for the Circle-Functions
Parameter: d0=pixelwidth
******************************************************************************
in ClippedChunkyCircle.s
ClippedChunkyCircle *** Draws a clipped circle

Parameter: a0=ChunkyScreen, d0=X, d1=Y, d3=Size (max 3840), d4=Color,
           d5=pixelwidth, d6=pixelheight
Included special loops which for example only clip MinY & MinX, and if
both are negative will only try to draw lower right quadrant.
Total of draw-loops is 43 variants.
******************************************************************************
in ChunkyCircleQuadrant.s

ChunkyCircleQuadrant *** Draw a quadrant of a circle
Paramter: a0=ChunkyScreen, d0=X, d1=Y, d2=Quadrants, d3=Size, d4=Color,
          d5=pixelwidth
Quadrant: 1=top right, 2=bottom right, 4=bottom left, 8=top left
          ofcourse you can combine them 1+2 = right half of a circle
Both ClippedChunkyCircle.s & ChunkyCircleQuadrant.s include ChunkyMultab.s,
so if you want both remove one include.
You have to call MakeChunkyMultab width screenwidth in d0 once before using a
Circle-Function and when the screenwidth changes.
******************************************************************************
in ChunkyLine.s
ChunkyRectangle
Paramters: a0=ChunkyScreen, d0=x0, d1=y0, d2=x1, d3=y1, d4=Color,
           d5=pixelwidth, d6=pixelheight
(without clipping pixelheight is not needed)

ChunkyLine
Paramters: a0=ChunkyScreen, d0=x0, d1=y0, d2=x1, d3=y1, d4=Color,
           d5=pixelwidth, d6=pixelheight
(without clipping pixelheight is not needed)

if ChunkyLine.s defines:
CLIPLINES SET 1

then ClipLine.s will be included and called.
******************************************************************************
in ClipLine.s
ClipLine
Paramters: d0=x0, d1=y0, d2=x1, d3=y1, d5=pixelwidth, d6=pixelheight
Clips x0,y0,x1&y1 to the screenborders.
returns zero when the line should be drawn. i.e:
	bsr ClipLine
	bne.b SkipThisLine
...
******************************************************************************

Would be nice if you mention me when using these functions.

******************************************************************************

Check out my other tools:
http://aminet.net/search?readme=%22Holger+Hippenstiel%22&sort=date&ord=DESC

    DISCLAIMER

        This software is subject to the "Standard Amiga FD-Software Copyright
        Note". It is Giftware as defined in paragraph 4g. If you like it and
		use it regulary, please send me a small gift.
		For more information please read "AFD-COPYRIGHT".

        Diese Software unterliegt der "Standard Amiga FD-Software Copyright
        Note". Sie ist Giftware wie definiert in Absatz 4g. Falls du sie magst
		und regelmaessig benutzt, sende bitte ein kleines Geschenk.
		Fuer mehr Informationen lies bitte "AFD-COPYRIGHT".

        (/pub/aminet/docs/misc/AFD-FilesV-XX.lha V=Version,XX=Languages)

    AUTHOR

        Please send comments, bug-reports or small gifts or Paypal me to:

        Holger.Hippenstiel AT gmx.de
        Furtwanger Str. 14
        71034 Böblingen
        Germany


Contents of dev/asm/ChunkyFunctions.lha
PERMISSION  UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP     NAME
---------- ----------- ------- ------- ------ ---------- ------------ ----------
[unknown]                 1473   11090  13.3% -lh5- 4141 Jun  3 14:31 ChunkyCircleQuadrant.s
[unknown]                 1496   11146  13.4% -lh5- cad2 Jun  3 14:39 ChunkyCircleQuadrant_000.s
[unknown]                 4359    5080  85.8% -lh5- 2799 Jun  3 14:43 ChunkyExample
[unknown]                 2039    5199  39.2% -lh5- ba04 Jun  3 14:46 ChunkyFunctions.readme
[unknown]                 1382    4413  31.3% -lh5- 9035 May 26 10:01 ChunkyLine.s
[unknown]                  431     926  46.5% -lh5- 336a May 22 20:51 ChunkyMultab.s
[unknown]                  737    2240  32.9% -lh5- fbce May 22 20:51 ClipLine.s
[unknown]                 8401   82748  10.2% -lh5- 62e1 Jun  3 14:39 ClippedChunkyCircle.s
[unknown]                 8420   82847  10.2% -lh5- 4df8 Jun  3 14:40 ClippedChunkyCircle_000.s
[unknown]                  635    1871  33.9% -lh5- 6f01 Jun  3 14:35 FullChunkyCircle.s
[unknown]                  648    1922  33.7% -lh5- 30cb Jun  3 14:38 FullChunkyCircle_000.s
---------- ----------- ------- ------- ------ ---------- ------------ ----------
 Total        11 files   30021  209482  14.3%            Jun  4 04:15

Aminet © 1992-2024 Urban Müller and the Aminet team. Aminet contact address: <aminetaminet net>