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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…

    ... QUOTE=Arjun;171178]You can draw an arc by specifying a third ... parameter in the DRAW command.[/QUOTE ... s a simple way to draw sprites, screens for adventure ... a lot of individual LINE, DRAW or PLOT (Applesoft BASIC) statements.
    JamesD JamesD February 2007 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 …

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

    The Z88 source ... ?) line.

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

    ...
    Jimmy Jimmy August 2008 Development
  • Best way to store vector images in Sinclair BASIC?Let's forget for a moment that Sinclair BASIC is slow. If I have a picture made entirely of vector images, what would be the best way to store that d…

    ... ] would be the coordinates for PLOT, and [I]a[/I] and ... be the parameters for DRAW. Since PLOT is only necessary if the ... , 256, the routine would skip PLOT, DRAW a,b and jump to ...
    zxbruno zxbruno May 2009 Sinclair Basic
  • Is it me or is the +2 manual nowhere as good as the original?I think it's probably as much to do with my ageing brain as the bloody manual for the Spectrum +2 from Amstrad but the explanations don't make as muc…

    ... including the info about using draw and plot along with the chart ... coordinates for both PRINT and PLOT.

    Then again, what ...
    mik3d3nch mik3d3nch October 2020 Sinclair Basic
  • Spectrum Basic InterpreterHello. I started this days a strange project: an interpreter of the Spectrum Basic that can run in a Spectrum. Here is a very preliminar version: […

    so your basic interpreter will not be able to support DRAW/LINE/PLOT commands for CP/M, for it's only text based.

    Will they give any error or they will just do nothing?
    Arda Arda December 2006 Development
  • Spectrum Basic InterpreterHello. I started this days a strange project: an interpreter of the Spectrum Basic that can run in a Spectrum. Here is a very preliminar version: […

    ... not be able to support DRAW/LINE/PLOT commands for CP/M ...
    NotFound NotFound December 2006 Development
  • New oneliners for 2008[INDENT][INDENT][INDENT]Here's my attempt at a first-person-perspective 3d game in one line of BASIC. It's called 'wormhole', and you've got to get t…

    Just another idea:

    When set the PLOT in the negative range, you don't need to give the sign
    in the draw command.

    PLOT 128*e+a,88-D-F*W
    DRAW C-A,F*W
    DRAW 0,D+D
    DRAW A-C,F*W
    Dr BEEP Dr BEEP March 2008 Development
  • New oneliners for 2008[INDENT][INDENT][INDENT]Here's my attempt at a first-person-perspective 3d game in one line of BASIC. It's called 'wormhole', and you've got to get t…

    ... :

    When set the PLOT in the negative range, you ...
    in the draw command.

    PLOT 128*e+a,88 ... -D-F*W
    DRAW C ... ,F*W
    DRAW 0,D+D
    DRAW A-C,F ... )/21)*m(q)=0:
    PLOT 256*e+a,88-d ...
    Dr BEEP Dr BEEP March 2008 Development
  • Graphical Amusementsstefano (another z88dk bod) has been working on something interesting: run them with the usual LOAD "" [url]http://stefanob.webs.com/rabbit.tap[/ur…

    ... the converter, not by the draw routines though I suppose this ... ). svg has things like draw bezier and draw arc but the converter substitutes ...
    Alcoholics Anonymous Alcoholics Anonymous November 2009 Development
  • ZX Flight - flight simulator (Basic)Yesterday I found this BASIC flight simulator on an old tape. Obviously this is a my type-in from an old ex-Yugoslavian magazine from mid 80s. I did …

    ... the if's, tweaked the draw and plot, and sorted incompatible statements ... with ZX Basic's faster draw routines over Sinclair basic's ...
    Gedlion Gedlion December 2010 Games
  • Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…

    ... print character routine and the plot routine. This is responsible ... It is now possible to draw and plot in full colour, every ... colour using standard sinclair basic plot, draw and circle commands.
    < ... Hobbit, which uses the ROM plot routine, and it works ...
    Basher Basher April 2014 Hardware
  • 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…

    ... I have made CIRCLE, DRAW and PLOT use the full screen, changed ...
    Paddy Coleman Paddy Coleman October 2018 Hardware
  • 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 ... range error.

    PLOT x1,y1
    DRAW ????.????

    I ...
    zxbruno zxbruno May 2009 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 ... of the DRAW command implemented in BASIC - but not the arc drawing ... , or Pascal!) implementation of the Arc drawing algorithm implemented by the ... be clear, I can already draw bezier curves (and therefore, so ...
    Dunny Dunny August 2010 Sinclair Basic
  • 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]…

    ... plot, but on a line draw ... ; ---------------------------------------------------------------------
    ; DRAW using Bresenham's algorithm ... br />
    ;; DRAW PROCEDURE
    PROC
    boriel boriel December 2010 Development
  • Why no PLOT, etc. on bottom two lines?I was pondering if there was any way to get PLOT, etc. to address the full screen from BASIC without having to write a few lines of assembler to bypa…

    ... was any way to get PLOT, etc. to address the full ... A,$AF)

    then PLOT, DRAW, CIRCLE, POINT will all work ...
    Battle Bunny Battle Bunny August 2014 Sinclair Basic
  • Where does the the Spectrum store the PLOT position ?So try this and it works just fine. The Spectrum must store the PLOT position somewhere as the line moves along. I'm sure someone knows where this is…

    ... . The Spectrum must store the PLOT position somewhere as the line ... :CLS
    10 PLOT 0,0
    20 DRAW RND*20,RND ...
    ivanb303 ivanb303 December 2016 Sinclair Basic
  • Just remembered - Spirograph Effect. - Please ExplainJust remembered that we used to mess about with the Draw command to get a spirograph effect in Sinclar Basic. Squares 10 plot 75,75 20 draw 80,48,…

    ... to mess about with the Draw command to get a ... of course, tell BASIC to draw a curve, and that third ... much of a curve to draw.

    You'd ... for part of an arc, and BASIC would plot a point, move ... it knows it has to draw a number of segments, but ...
    Dunny Dunny February 2005 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…

    [QUOTE=Arjun;171178]You can draw an arc by specifying a third parameter ... />
    [CODE]10 PLOT 100,100
    20 DRAW 50,0,PI ... />
    [CODE]10 PLOT 100,100
    20 DRAW 40,0,12000 ... ]

    As for a DRAW routine that could manage arbitrary ...
    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…

    ... =Matt_B;171342]Sort of. The arc is broken up into a ... ones made with a single PLOT/DRAW pair) repeat over themselves with ... : PRINT "Triangle"
    12 PLOT 100,88: DRAW 0,-.000009,252*PI ... : PRINT "Square"
    22 PLOT 40,110: DRAW .00001,.00001,252*PI ...
    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=Arjun;171178]You can draw an arc by specifying a third parameter in the DRAW command.[/QUOTE]

    [code]
    10 PLOT 50,50
    20 DRAW 100,100,PI[/code]
    Edit: Oh, I see that an example has already been given!
    BloodBaz BloodBaz March 2007 Development
  • What did Spectrum BASIC lack (and was BBC BASIC so good?)Over the years, I've read in various multi-format magazines, that BBC BASIC was probably the best BASIC available on an 8-bit machine. I've never use…

    ... ;215158]MODE worked on the Arc the same as it did ... you wrote a program to draw graphics in MODE 0, it ... "LET XRG=1,YRG=1: PLOT 0.5,0.5" would ... plot in the middle of the ... =1280,YRG=1024, Although unfortunately, PLOT 1279,1023 would fail, as ...
    zub zub September 2007 Sinclair Basic
  • New oneliners for 2008[INDENT][INDENT][INDENT]Here's my attempt at a first-person-perspective 3d game in one line of BASIC. It's called 'wormhole', and you've got to get t…

    ... =Einar Saukas;247228]Actually a PLOT/DRAW would eliminate the UDG characters ... altogether and go totally with PLOT/DRAW instead.

    The thought ... DRAW in order to draw an arc.

    If we could draw an arc ...
    Digital Prawn Digital Prawn February 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 …

    ... /> imagine you have some quick plot routine inlined

    [code ... . BASICs CIRCLE is just DRAW x, y, arc command with specific parameters ... , bresenham implemented in basic will draw circle a bit faster than ...
    Fikee Fikee September 2008 Development
<1234567…34>

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