Its available here: http://download.blender.org/ftp/ton/dspline.pdf
On Mon, Dec 29, 2014 at 7:28 AM, joe <[email protected]> wrote: > Do you have a link to a paper? > On Sep 28, 2014 10:45 AM, "Fred" <[email protected]> wrote: > >> Hi Campbell Barton, >> >> The amount of interpolation dots is 2^i, at the start of the demo i = >> 4 (16 dots) >> if you change i = 7 (the limit in the demo) than there are 128 >> interpolation dots. >> >> if I had set the limit in the demo to 10 then 1024 interpolation dots >> was possible. >> >> If the spline is used in a 3 dimensional space, >> to compute an interpolated dot position takes: dim * 10 clock cycles = >> 30 clock cycles. >> I hope that it is fast enough. >> >> If you like to have a curve to the last plotted dot you have to put two >> dots on each other at the end. >> You will see that it is symmetrical again. >> >> Please change the number to 7 in the demo and you see a curved line in >> stead of dots. >> >> Much more is possible with this spline because the first, second and >> third derivative (parameterized ) of the curve >> is available in real time. >> >> I think that much more can be invented with this spline technique. >> I think that with some research tangent handles can be constructed as >> well (if you like them?). >> What I did in the demo was the most simple way of using it. >> >> The essence is: a 3th degree curve in two (x,y) or more directions is >> differentiated three times, and then again integrated 3 times. >> With floating point this is impossible , because it is not exact, the >> curve runs away. >> But with integer computing it is exact and the spline exact a 3th degree >> curve. >> >> It can also be used in ten or more directions, but more then 3 >> dimensions (x,y,z) is not practical. >> >> Fred. >> -------------------------------------- >> Fred schreef op 28-9-2014 om 18:30: >> > That is in the demo the case, because I programmed that the first plot >> > point is actually two points. >> > the spline uses 4 points p0, p1, p2, p3 and the interpolation is >> > between p1 and p2. >> > >> > Campbell Barton schreef op 28-9-2014 om 17:42: >> >> Checked the test application, and not sure if this is intended but a >> >> simple triangle has uneven distribution. >> >> >> >> see: http://www.graphicall.org/ftp/ideasman42/fred_curve.png >> >> >> >> On Mon, Sep 29, 2014 at 1:32 AM, Dan McGrath <[email protected]> >> wrote: >> >>> Cool, got them. Will take a look later. o/ >> >>> >> >>> Dan >> >>> >> >>> On Sun, Sep 28, 2014 at 11:28 AM, Fred <[email protected]> wrote: >> >>> >> >>>> Ok, It is uploaded to the directory incoming >> >>>> >> >>>> Dan schreef op 28-9-2014 om 17:15: >> >>>>> You could always upload it to our anonymous ftp via >> download.blender.org >> >>>>> (or ftp.blender.org) and put it into the incoming directory (use >> passive >> >>>>> mode). From there was can fetch the files via >> >>>>> http://download.blender.org/ftp/incoming/ >> >>>>> >> >>>>> Dan >> >>>>> >> >>>>> On Sun, Sep 28, 2014 at 11:05 AM, Fred <[email protected]> wrote: >> >>>>> >> >>>>>> Campbell Barton >> >>>>>> >> >>>>>> I have tried to send it but it is rejected. So send me an addres for >> >>>>>> upload. >> >>>>>> >> >>>>>> fred >> >>>>>> >> >>>>>> >> >>>>>> Campbell Barton schreef op 28-9-2014 om 16:51: >> >>>>>>> Could the project files be posted to a public URL?, Id like to be >> able >> >>>>>>> to look into this. but probably wont have time over the coming >> weeks. >> >>>>>>> >> >>>>>>> The main source file compiles for me with minor edits on >> >>>>>>> Linux/FreePascal, but the demo relies on `Window` unit, which I >> assume >> >>>>>>> is provided by delphi/windows. >> >>>>>>> >> >>>>>>> On Mon, Sep 29, 2014 at 12:36 AM, Dan McGrath < >> [email protected] >> >>>>>> wrote: >> >>>>>>>> Hey, >> >>>>>>>> >> >>>>>>>> Just save out the delphi project and zip it up and email it to me >> >>>> direct >> >>>>>>>> via email I guess (the mailing list wouldn't allow such a large >> >>>>>>>> attachement). I was attempting to compile it on linux, so the >> compiled >> >>>>>>>> dll's wouldn't be of much use to me unfortunately. >> >>>>>>>> >> >>>>>>>> Thanks! >> >>>>>>>> >> >>>>>>>> >> >>>>>>>> Dan >> >>>>>>>> >> >>>>>>>> On Sun, Sep 28, 2014 at 10:06 AM, Fred <[email protected]> >> wrote: >> >>>>>>>> >> >>>>>>>>> Hi Dan, >> >>>>>>>>> >> >>>>>>>>> Of course I can send you the project. >> >>>>>>>>> I have made two versions: >> >>>>>>>>> 1) The spline is embedded in de demo: >> >>>>>>>>> 2) The spline is an external .dll, de demo calls PSpline.dll >> >>>>>>>>> >> >>>>>>>>> Which one do you prefer? >> >>>>>>>>> >> >>>>>>>>> Fred. >> >>>>>>>>> ---------------- >> >>>>>>>>> >> >>>>>>>>> >> >>>>>>>>> >> >>>>>>>>> Dan McGrath schreef op 28-9-2014 om 15:42: >> >>>>>>>>>> So is/was Turbo Pascal (limited in features; eg: objects but no >> >>>>>> classes) >> >>>>>>>>>> and FreePascal+Lazarus (supports almost everything Delphi does >> >>>> still? >> >>>>>>>>>> http://wiki.freepascal.org/Lazarus_For_Delphi_Users). >> >>>>>>>>>> >> >>>>>>>>>> Anyway, just thought it was neat to see code in pascal (an >> elegant >> >>>>>>>>>> language, imho). Curious though, why not just give the whole >> delphi >> >>>>>>>>> project >> >>>>>>>>>> and resource files so your forms can be built etc.? The code >> seems >> >>>> to >> >>>>>>>>>> compile with some modifications here, but without the {$R *.DFM} >> >>>>>> (*.lfm >> >>>>>>>>> in >> >>>>>>>>>> fp), one would have to manually rebuild the form :( >> >>>>>>>>>> >> >>>>>>>>>> >> >>>>>>>>>> >> >>>>>>>>>> On Sun, Sep 28, 2014 at 8:55 AM, Fred <[email protected]> >> wrote: >> >>>>>>>>>> >> >>>>>>>>>>> It's true, but Delphi is object oriented. >> >>>>>>>>>>> >> >>>>>>>>>>> Dan McGrath schreef op 28-9-2014 om 14:53: >> >>>>>>>>>>>> Standard Pascal, Turbo Pascal, Freepascal, Delphi; same >> language, >> >>>>>>>>>>> different >> >>>>>>>>>>>> dialect :) >> >>>>>>>>>>>> >> >>>>>>>>>>>> On Sun, Sep 28, 2014 at 8:43 AM, Fred <[email protected]> >> >>>> wrote: >> >>>>>>>>>>>>> Actually it is Delphi >> >>>>>>>>>>>>> >> >>>>>>>>>>>>> >> >>>>>>>>>>>>> Dan McGrath schreef op 28-9-2014 om 14:35: >> >>>>>>>>>>>>>> Pascal, with inline assembler to boot! \o/ :) >> >>>>>>>>>>>>>> >> >>>>>>>>>>>>>> On Sun, Sep 28, 2014 at 6:46 AM, Ton Roosendaal < >> >>>> [email protected]> >> >>>>>>>>>>> wrote: >> >>>>>>>>>>>>>>> Hi, >> >>>>>>>>>>>>>>> >> >>>>>>>>>>>>>>> Fred told me he's not interested in getting involved, or >> >>>> setting >> >>>>>> up >> >>>>>>>>> a >> >>>>>>>>>>>>>>> project for his work. >> >>>>>>>>>>>>>>> He's retired now and just thought we might be interested >> in a >> >>>>>>>>> research >> >>>>>>>>>>>>>>> topic he did. >> >>>>>>>>>>>>>>> >> >>>>>>>>>>>>>>> I've copied files he sent to me here; >> >>>>>>>>>>>>>>> http://download.blender.org/ftp/ton/ >> >>>>>>>>>>>>>>> >> >>>>>>>>>>>>>>> It's a Dutch pdf and two pascal files. >> >>>>>>>>>>>>>>> >> >>>>>>>>>>>>>>> -Ton- >> >>>>>>>>>>>>>>> >> >>>>>>>>>>>>>>> -------------------------------------------------------- >> >>>>>>>>>>>>>>> Ton Roosendaal - [email protected] - www.blender.org >> >>>>>>>>>>>>>>> Chairman Blender Foundation - Producer Blender Institute >> >>>>>>>>>>>>>>> Entrepotdok 57A - 1018AD Amsterdam - The Netherlands >> >>>>>>>>>>>>>>> >> >>>>>>>>>>>>>>> >> >>>>>>>>>>>>>>> >> >>>>>>>>>>>>>>> On 28 Sep, 2014, at 9:28, Aditia A. Pratama wrote: >> >>>>>>>>>>>>>>> >> >>>>>>>>>>>>>>>> HI Fred, >> >>>>>>>>>>>>>>>> >> >>>>>>>>>>>>>>>> Can you record a screencast/video demo to show how it >> works? >> >>>>>>>>>>>>>>>> >> >>>>>>>>>>>>>>>> Regards, >> >>>>>>>>>>>>>>>> On Sep 28, 2014 2:14 PM, "Fred" <[email protected]> >> wrote: >> >>>>>>>>>>>>>>>> >> >>>>>>>>>>>>>>>>> I forgot to say, I have a two dimensional demo but it is >> >>>>>> working >> >>>>>>>>> on >> >>>>>>>>>>> a >> >>>>>>>>>>>>>>>>> windows computer. >> >>>>>>>>>>>>>>>>> >> >>>>>>>>>>>>>>>>> Jacob Merrill schreef op 28-9-2014 om 02:07: >> >>>>>>>>>>>>>>>>>> would this make it so you can record F-curves over time >> >>>>>> better? >> >>>>>>>>>>>>>>>>>> right now recording in the engine gets slower the >> longer it >> >>>>>> runs, >> >>>>>>>>>>>>>>>>>> _______________________________________________ >> >>>>>>>>>>>>>>>>>> Bf-committers mailing list >> >>>>>>>>>>>>>>>>>> [email protected] >> >>>>>>>>>>>>>>>>>> http://lists.blender.org/mailman/listinfo/bf-committers >> >>>>>>>>>>>>>>>>>> >> >>>>>>>>>>>>>>>>> _______________________________________________ >> >>>>>>>>>>>>>>>>> Bf-committers mailing list >> >>>>>>>>>>>>>>>>> [email protected] >> >>>>>>>>>>>>>>>>> http://lists.blender.org/mailman/listinfo/bf-committers >> >>>>>>>>>>>>>>>>> >> >>>>>>>>>>>>>>>> _______________________________________________ >> >>>>>>>>>>>>>>>> Bf-committers mailing list >> >>>>>>>>>>>>>>>> [email protected] >> >>>>>>>>>>>>>>>> http://lists.blender.org/mailman/listinfo/bf-committers >> >>>>>>>>>>>>>>> _______________________________________________ >> >>>>>>>>>>>>>>> Bf-committers mailing list >> >>>>>>>>>>>>>>> [email protected] >> >>>>>>>>>>>>>>> http://lists.blender.org/mailman/listinfo/bf-committers >> >>>>>>>>>>>>>>> >> >>>>>>>>>>>>>> _______________________________________________ >> >>>>>>>>>>>>>> Bf-committers mailing list >> >>>>>>>>>>>>>> [email protected] >> >>>>>>>>>>>>>> http://lists.blender.org/mailman/listinfo/bf-committers >> >>>>>>>>>>>>>> >> >>>>>>>>>>>>> _______________________________________________ >> >>>>>>>>>>>>> Bf-committers mailing list >> >>>>>>>>>>>>> [email protected] >> >>>>>>>>>>>>> http://lists.blender.org/mailman/listinfo/bf-committers >> >>>>>>>>>>>>> >> >>>>>>>>>>>> _______________________________________________ >> >>>>>>>>>>>> Bf-committers mailing list >> >>>>>>>>>>>> [email protected] >> >>>>>>>>>>>> http://lists.blender.org/mailman/listinfo/bf-committers >> >>>>>>>>>>>> >> >>>>>>>>>>> _______________________________________________ >> >>>>>>>>>>> Bf-committers mailing list >> >>>>>>>>>>> [email protected] >> >>>>>>>>>>> http://lists.blender.org/mailman/listinfo/bf-committers >> >>>>>>>>>>> >> >>>>>>>>>> _______________________________________________ >> >>>>>>>>>> Bf-committers mailing list >> >>>>>>>>>> [email protected] >> >>>>>>>>>> http://lists.blender.org/mailman/listinfo/bf-committers >> >>>>>>>>>> >> >>>>>>>>> _______________________________________________ >> >>>>>>>>> Bf-committers mailing list >> >>>>>>>>> [email protected] >> >>>>>>>>> http://lists.blender.org/mailman/listinfo/bf-committers >> >>>>>>>>> >> >>>>>>>> _______________________________________________ >> >>>>>>>> Bf-committers mailing list >> >>>>>>>> [email protected] >> >>>>>>>> http://lists.blender.org/mailman/listinfo/bf-committers >> >>>>>> _______________________________________________ >> >>>>>> Bf-committers mailing list >> >>>>>> [email protected] >> >>>>>> http://lists.blender.org/mailman/listinfo/bf-committers >> >>>>>> >> >>>>> _______________________________________________ >> >>>>> Bf-committers mailing list >> >>>>> [email protected] >> >>>>> http://lists.blender.org/mailman/listinfo/bf-committers >> >>>>> >> >>>> _______________________________________________ >> >>>> Bf-committers mailing list >> >>>> [email protected] >> >>>> http://lists.blender.org/mailman/listinfo/bf-committers >> >>>> >> >>> _______________________________________________ >> >>> Bf-committers mailing list >> >>> [email protected] >> >>> http://lists.blender.org/mailman/listinfo/bf-committers >> >> >> > _______________________________________________ >> > Bf-committers mailing list >> > [email protected] >> > http://lists.blender.org/mailman/listinfo/bf-committers >> > >> >> _______________________________________________ >> Bf-committers mailing list >> [email protected] >> http://lists.blender.org/mailman/listinfo/bf-committers >> > _______________________________________________ > Bf-committers mailing list > [email protected] > http://lists.blender.org/mailman/listinfo/bf-committers -- - Campbell _______________________________________________ Bf-committers mailing list [email protected] http://lists.blender.org/mailman/listinfo/bf-committers
