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<1234567…34>
  • 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
  • Whatever happened to Geoff Crammond?I know he was never a Speccy programmer but he did create some classic games during the 80's, 90's and 00's. Over the last few weeks I've got into F…

    ... old Grand Prix 4 by Geoff, which initially I was a ...
    Vampyre Vampyre March 2008 Chit chat
  • 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
  • New Vector utility (and questions)I was taking a look at the new version of vector creation utility from the Mojon Twins. The program exports a binary file that can either be read fro…

    ... level of transparency, and then draw the vectors on top of ... processed.

    I remember Geoff did some vector work and ...
    zxbruno zxbruno 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
  • 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
  • Measuring the Geoff Wearmouth problemTo paraphrase NickH: Please vote if you've received harassment from Geoff Wearmouth during this year, be it theft of your copyright material, or mal…

    ... you've received harassment from Geoff Wearmouth during this year, be ...
    chev chev April 2012 Chit chat
  • 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
  • melbourne drawIt could be said I am easly pleased,:grin: Very nice peice of software. I was realy impressed by its ease of use. I think a lot of time and effort w…

    ... if i realy want to draw fancy shapes I can just ... the hobbit graphics to melborne draw. any ideas?

    Side ...
    wibble wibble August 2013 Development
  • draw single pixel in the borderI have problems with drawing in the border. I can get it to draw a line ,but it always becomes a line and not a single pixel. <br><br>rept 3580 <br…

    ... . I can get it to draw a line ,but it always ...
    micken micken May 2015 Development
  • Euro 2016 Draw AKA The 'England Are Gonna Win' ThreadNow I know it's currently the 'in thing' to think the England footie team are overrated, overpaid, uninterested twonks, but thought I'd start a threa…

    ... start a thread as the draw is at 5.30pm (GMT ...
    Maroc's Other Projection Maroc's Other Projection December 2015 Chit chat
  • How to draw a picture on ZX Spectrum Basic?How can i draw a picture on ZX Spectrum like this?? http://www.worldofspectrum.org/infoseekid.cgi?id=0026662

    How can i draw a picture on ZX Spectrum like this?? http://www.worldofspectrum.org/infoseekid.cgi?id=0026662
    DerekAutista DerekAutista December 2016 Games
  • WoS Charity draw.As a thank you for everyone donating to WoS last year, I have generated a random set of raffle number for all donations. In a change to the charit…

    ... /> We will be doing the draw throughout March - later than planned ... be added to the charity draw - lots of prizes on offer ... will add you to the draw.

    Good luck everyone ...
    Lee Fogarty Lee Fogarty January 2019 Sinclair Miscellaneous
  • 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…

    ... , Geoff wrote:

    I recently discovered that special cases of DRAW ...
    Dr BEEP Dr BEEP July 2005 Sinclair Basic
  • ZX80 software wanted for a ZX80 siteHi everyone - I'm putting together a site about the ZX80 - I've noticed there's virtually no software available for it on the net so that's the part …

    ... pseudo-hires display file and draw that instead. No hardware emulation ... different ZX81 keyboards. AFAIR (Ask Geoff - he knows more about this ...
    MikeW MikeW February 2006 Sinclair Miscellaneous
  • 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…

    How does Geoff's DRAW program work? The three argument DRAW command is meant to draw arcs, not regular polygons and stars. Is it some rounding error thing?
    JamesW JamesW February 2007 Development
  • 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…

    [QUOTE=JamesW;171327]How does Geoff's DRAW program work? The three argument ... DRAW command is meant to draw arcs, not regular ... number of straight line segments. Geoff's example exploits the fact ...
    Matt_B Matt_B February 2007 Development
  • 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…

    [quote=Geoff;171195]Steven John Vickers who wrote the DRAW command for ... of straight line segments. Geoff's example exploits the fact ... this, I just modded Geoff's program to include an ... DRAW pair) repeat over themselves with BASin. The final listing, if Geoff ...
    Marcelo Marcelo February 2007 Development
  • 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…

    [QUOTE=JamesW;171327]How does Geoff's DRAW program work? The three argument ... DRAW command is meant to draw arcs, not regular ...
    NotFound NotFound February 2007 Development
  • Are you a serious programmer of the Spectrum?A statement at the back of "The complete Spectrum ROM disassembly". [quote] The "Complete Spectrum ROM disassembly" is a must for all serious progra…

    ... ://www.wearmouth.demon.co.uk/"]Geoff Wearmouth[/URL].
    [/QUOTE]
    DRAW command. I then thought the ...
    Geoff Geoff March 2007 Sinclair Miscellaneous
  • 48K games that don't work on a +2Not sure if there is already a thread about this but recently I've noticed some old 48K games will not run on my +2 - even in 48K mode. Examples are…

    ... to make it work. See Geoff's ROM disassembly for a ... when it is "safe" to draw on the screen - all in ... screen timings. Some games that draw in the border area (such ...
    Jimmy Jimmy June 2008 Games
  • 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 …

    ... 've just discovered that the DRAW-LINE routine is described in ... original "Complete ROM disassembly" book. (Geoff - perhaps you can update your ... this :
    [CODE] 500 REM 'DRAW A LINE' from last position ...
    Jimmy Jimmy August 2008 Development
  • 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 …

    ... ve just discovered that the DRAW-LINE routine is described ... original "Complete ROM disassembly" book. (Geoff - perhaps you can update your ... Hara book and I left DRAW-LINE blank after someone ... /> I'll start with DRAW-LINE. The DRAW and UNDRAW commands were ...
    Geoff Geoff August 2008 Development
  • 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 …

    [QUOTE=Geoff;296639]Steven John Vickers still teaches people how to draw circles ...
    Digital Prawn Digital Prawn August 2008 Development
  • 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 …

    [QUOTE=Geoff;296743]As an example of ... the screen address set to draw patterned lines. If you want ...
    Alcoholics Anonymous Alcoholics Anonymous September 2008 Development
<1234567…34>

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Related Threads

  • 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…
  • Whatever happened to Geoff Crammond?I know he was never a Speccy programmer but he did create some classic games during the 80's, 90's and 00's.<br /> <br /> Over the last few weeks I'v…
  • 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…
  • ATTN: Geoff WearmouthPlease could you PM me with an email address, I need to ask you somthing - thanks
  • 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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