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<1234567…34>
  • ANN: Write Spectrum Games in C with speclib121 Announcing the sprite pack C library for the z88dk C cross compiler available from: [url="http://justme895.tripod.com/main.htm"]http://justme895.tr…

    ... loading and basic graphics primitives (circle, draw, plot, etc, and even some ...
    Alcoholics Anonymous Alcoholics Anonymous February 2003 Announcements
  • RGB on speccy ?hi, just a question : are you aware of scene demo trying emulate rgb ? i was a bit ill last few days so laying in bad i come with a (stupid ?) idea.…

    ... buffer every frame. but line/circle draw routines are running as interrupted ...
    Fikee Fikee November 2008 Development
  • Games with good sound of engineSpectrum beeper and AY chip aren't too good with generating the sound of (car, motorbike etc.) engine. But sometimes engine sound in Speccy game is q…

    Enduro Racer isn't excellent, but I like it.

    This thread reminds me of my attempt (in BASIC) at creating a Test Driver clone. The whole thing worked with CIRCLE, DRAW, PRINT and BEEP commands for the 'sound engine'. :lol:
    zxbruno zxbruno December 2008 Games
  • Sinclair BASIC compiler for PC?Boriel's compiler is very powerful but it isn't meant for Sinclair BASIC, and the old compilers in the archive have their limitations: BASIC listing …

    ... same applies to DRAW & CIRCLE.

    DRAW & CIRCLE uses Bresenham's ... and are MUCH faster (specially CIRCLE).

    Anyway: Unused rutines ...
    boriel boriel May 2009 Development
  • That thing on ZX_Beccy's shelfI am sure I am not the only one who thinks ZX_Beccy has the most amazing Sinclair collection but has anyone else been curious about that white spectr…

    [QUOTE=murtceps;534043]there's also two < Symbols and two > Where = ended up.[/QUOTE]

    Also, no CIRCLE, DRAW, DEF FN, FN, OPEN#, CLOSE#, CAT, MOVE, ERASE, FORMAT :)
    memrah memrah May 2011 Chit chat
  • question re. STR$ bugCould someone point me to whereabouts in the ROM this goes wrong? [code]PRINT PAPER 5;1;STR$ 234[/code] (Only the "1" prints in cyan.) It's not the m…

    This routine (48 bytes) provides a BASIC replacement for STR$ which fixes those two bugs; use "FN s$(numeric_expression)" instead of "STR$ numeric_expression". I copied the ROM's method used in CIRCLE & DRAW for checking -1
    Battle Bunny Battle Bunny May 2012 Sinclair Basic
  • Bug fixed ROMHi Folks, Is there a bug fixed 48K ROM that is totally compatible with the original? I have searched the internet but the ROMs I have found all s…

    ... . So far I have made CIRCLE, DRAW and PLOT use the full ...
    Paddy Coleman Paddy Coleman October 2018 Hardware
  • Pseudocode for CIRCLE algorithm?Can anyone provide me with the pseudocode for the Spectrum's CIRCLE algorithm? My machine code knowledge isn't up to reading the ROM routine. I'm try…

    ... only faking to draw a circle, then just draw a circle.

    If ... you can see in the circle draw command
    3) plot them ...
    Timmy Timmy February 2020 BASIC
  • Bresenhams circle algorithmI post here my final circle code to replace, if you want, the one in the ROM. It only uses integer math and runs very fast and is very compact. It is…

    ...

    ;Bresenhams circle algorithm calculates the locations of ... draw a pixel in each of the 8 octants of the circle ... radius

    call circle

    ret

    ;******Circle ******
    circle:

    ld ...
    rtunes rtunes September 2008 Development
  • CIRCLEHi, I'd like to draw a circle x,y,r using the BASIC-ROM subroutines. I've put x, y and r onto the calculator stack and used CALL #232D and RET. I g…

    ... /> I'd like to draw a circle x,y,r using the ... RET.
    I got a circle on the screen but after ...
    HZJ HZJ March 2014 Development
  • CIRCLE Help. Please.Hello. I have been reading the Spectrum Basic programming manual. Chapter 10 - Mathematical Functions - p52 - 53 i am trying to understand circles…

    ... round the circumference of the circle.
    So the manual starts ... /> so they walk round the circle in a right to left ... .
    So I want to draw this on my emulator.
    circle at 0, pi/2, pi ...
    rholduser rholduser December 2020 Sinclair Basic
  • GraphicsI can't find this posted anywhere else, but how do you use graphics, other than circle, pixels and lines? For example, how do you draw a filled box o…

    I can't find this posted anywhere else, but how do you use graphics, other than circle, pixels and lines? For example, how do you draw a filled box on the screen i.e. a box filled with colour?
    sonic91 sonic91 July 2005 Sinclair Basic
  • Complex DRAW command?After looking at some Speccy code I noticed that the DRAW statement is used to draw lines (or it looked that way). On the Coco, the LINE command was…

    ... noticed that the DRAW statement is used to draw lines (or it ... command was used to draw lines and the DRAW statement was completely ... position isn't updated after draw)
    B = blank (move but ... don't draw)

    "U8R8D8L8" would draw a square 8 ...
    JamesD JamesD February 2007 Development
  • BASIC Keyword ReferenceRealised that the Sinclair Basic section would be a better place for discussion of BASIC keywords, so for reference the old thread is in [thread=2005…

    ... OVER : E : SYM + N
    CIRCLE : E : SYM + H PAPER : E ... : D REM : K : E
    DRAW : K : W RESTORE : E : S ...
    icabod icabod March 2008 Sinclair Basic
  • Bresenham's line algorithmHelp - I really am struggling to get my head around this algorithm. I don't know why, I coped with Cordic (SIN/COS) and integer divide routines (/10 …

    ... of the Spectrum ROM for DRAW-LINE at $24B7 is disappointingly ... consider the detail given for CIRCLE and DRAW ARC).

    The ... line.

    [CODE];now draw the line
    ;Bresenham line ... ,writefinish ;finished if trying to draw 0,0!

    ...
    Jimmy Jimmy August 2008 Development
  • Fastest way to decide which pixel to paint in order to draw a straight line(after I saw "Bresenhams circle algorithm" in development forum, I decided to ask this in here) in fact, I want to accelerate a car towards a direct…

    (after I saw "Bresenhams circle algorithm" in development forum, I ...
    Arda Arda September 2008 Sinclair Basic
  • Please help an absolute novice with some simple(ish) programming.I'm very, very rusty at BASIC. I'm using BASin, for my GCSE Astronomy coursework [quote] Use a spreadsheet and/or a graphing package, or write a com…

    I'm very, very rusty at BASIC. I'm using BASin, for my GCSE Astronomy coursework
    [quote] Use a spreadsheet and/or a graphing package, or write a computer program which simulates the scaled orbits of either at least four planets around the Sun, or ...
    thx1138 thx1138 December 2008 Sinclair Basic
  • Draw (x1,y1) to (x2, y2)?I was never very good at math. :( Given the above variables, what should I do to draw a line between the two pixels? How do I calculate the values fo…

    ... , what should I do to draw a line between the two ... I calculate the values for DRAW?

    I thought it ... />
    PLOT x1,y1
    DRAW ????.????

    I've seen ...
    zxbruno zxbruno May 2009 Sinclair Basic
  • wanna draw zx graphics :)Is anybody looking for a zx graphics ? I would like to help with graphics if there are projects that need it. Here is an example of a sprite (may be …

    ... big for a sprite) i draw today just for test :)))
    beZz beZz August 2009 Development
  • Oooh! Good draw!England has come up trumps with the World Cup 2010 draw. We're in group C, playing against USA, Slovenia and Algeria. I think it's pretty safe to say…

    England has come up trumps with the World Cup 2010 draw. We're in group C, playing against USA, Slovenia and Algeria. I think it's pretty safe to say that we won't be knocked out of the 1st round :D
    The Starglider The Starglider December 2009 Chit chat
  • How works the Line-Draw ROM routine ?The 'complete spectrum rom dissasembly.pdf' show info related to the draw rom subroutine. The Line-Draw require two sets of parameters: X,Y coordinat…

    ... related to the draw rom subroutine. The Line-Draw require two sets ... show a working example to draw a line in asm ? because ...
    arfgh arfgh June 2010 Sinclair Basic
  • DRAW x,y,a Algorithm - how does the ROM do it?Hi all, Getting on with SpecOS, and one of the things I would love to do is to preserve the original ROM's behaviour when drawing Arcs. This is don…

    ... . This is done by using DRAW x,y,a where the ... provide an example of the DRAW command implemented in BASIC - but ... be clear, I can already draw bezier curves (and therefore, so ...
    Dunny Dunny August 2010 Sinclair Basic
  • [SpecOS] Question about OVEROk folks, this one has me (and a few friends) stumped. How would you implement OVER in SpecOS? Bear in mind that I'm after an algorithm which I appl…

    ... command, or graphics commands like CIRCLE, ELLIPSE, DRAW, PLOT etc), and information ...
    Dunny Dunny September 2010 Sinclair Miscellaneous
  • A fast DRAW routineI was investigating how to speed up the line drawing for the [URL="http://www.worldofspectrum.org/forums/showthread.php?t=20225"]BASIC compiler[/URL]…

    ... CODE]
    ; ---------------------------------------------------------------------
    ; DRAW using Bresenham's algorithm and ... ; ---------------------------------------------------------------------

    ;; DRAW PROCEDURE
    PROC
    < ...
    boriel boriel December 2010 Development
  • line, plot and circle in whole 256x192 displayhi! are there some way to draw lines, or whatever, in the whole 256x192 display, than just the above 256x176 part? (this is the msx1 version i made o…

    ... /> are there some way to draw lines, or whatever, in the ...
    nitrofurano nitrofurano September 2011 Sinclair Basic
  • Oceans 'Melbourne Draw+' utility and MOREWas this preserved? I thought I had all my microdrives from Ocean salvaged but I don't seem to remember this being put on WOS? It's Melbourne Draw bu…

    ... on WOS? It's Melbourne Draw but with stuff bolted on ...
    Mark R. Jones Mark R. Jones October 2011 Sinclair Miscellaneous
  • SpecBAS 0.747 Now available!Hiya folks - it's update time again! SpecBAS has had a load of new fixes, as well as some new additions! Firstly, as you all wanted it, SpecBAS can…

    ... /> Now all graphics commands (PLOT, DRAW, CIRCLE etc) will use coordinates in ...
    Dunny Dunny July 2012 Sinclair Miscellaneous
  • New ZX Spectrum emulator for Jupiter AceProject page (sorry in Spanish) [url]http://retrolandia.net/foro/showthread.php?tid=36[/url] Try it in a Jupiter Ace emulator [url]http://jupiler.re…

    ... pure BASIC games. PLOT, CIRCLE and DRAW are also emulated but only ...
    antoniovillena antoniovillena September 2012 Emulators
  • Image to BASIC commandsHi all I'm looking for an app that read an image (jpg, gif, etc...) and convert it to BASIC commands (DRAW, CIRCLE, etc...) The images to convert wi…

    ... convert it to BASIC commands (DRAW, CIRCLE, etc...) The images to convert ...
    oblo oblo October 2012 Development
  • Can anyone draw pixels?I'm not sure where is best to post this request, but I would like to know if anyone out there would like to draw some Speccy graphics for me. It's no…

    ... out there would like to draw some Speccy graphics for me ...
    Shaun.Bebbington Shaun.Bebbington January 2013 Sinclair Miscellaneous
<1234567…34>

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  • Complex DRAW command?After looking at some Speccy code I noticed that the DRAW statement is used to draw lines (or it looked that way).<br /> <br /> On the Coco, the LINE…
  • Lerm MicroMate - A Full CircleWell, it's taken a long time... but while eventually making an image of my [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0008433"]MicroMate[…
  • Bresenhams circle algorithmI post here my final circle code to replace, if you want, the one in the ROM.<br /> It only uses integer math and runs very fast and is very compact.…
  • Fastest way to decide which pixel to paint in order to draw a straight line(after I saw "Bresenhams circle algorithm" in development forum, I decided to ask this in here)<br /> <br /> in fact, I want to accelerate a car towa…
  • Draw (x1,y1) to (x2, y2)?I was never very good at math. :( Given the above variables, what should I do to draw a line between the two pixels? How do I calculate the values fo…
  • wanna draw zx graphics :)Is anybody looking for a zx graphics ? I would like to help with graphics if there are projects that need it. Here is an example of a sprite (may be …
  • Oooh! Good draw!England has come up trumps with the World Cup 2010 draw. We're in group C, playing against USA, Slovenia and Algeria. I think it's pretty safe to say…
  • How works the Line-Draw ROM routine ?The 'complete spectrum rom dissasembly.pdf' show info related to the draw rom subroutine. The Line-Draw require two sets of parameters: X,Y coordinat…
  • Stusoft Draw by Stuart LincolnJust found this on a C15, I can't find any info. I loaded it into spin, but it crashed when I selected an option from the menu.<br /> [IMG]http://i2…
  • DRAW x,y,a Algorithm - how does the ROM do it?Hi all, <br /> <br /> Getting on with SpecOS, and one of the things I would love to do is to preserve the original ROM's behaviour when drawing Arcs.…

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