[x3d-public] Formulas of flowers

John Carlson yottzumm at gmail.com
Sat Jul 3 17:40:32 PDT 2021

Not using my imagination here much…would something like this do the trick?


On Sat, Jul 3, 2021 at 7:37 PM Konstantin Smirnov <
konstantin.e.smirnov at gmail.com> wrote:

> Thanks! I saw your links
> Fibonacci on other sites really exist. Formulas for roses not clear how to
> apply,
> I am looking for those that can be plugged in simple languages such as php
> or JavaScript,
> More important is to have formulas. For example for drawing leaves. At
> first for php, then for 3d
> вс, 4 июл. 2021 г., 03:15 John Carlson <yottzumm at gmail.com>:
>> Ah, GD, I’ve used that in Perl, not PHP.   I was never really impressed
>> by GD, but it may work for 2D.   I can help with JavaScript, GLSL or maybe
>> Perl (OBJ file) if you want 3D.  I don’t have my AppleSoft Basic around any
>> more.
>> Maybe you want something like vpython?
>> You seem to be lazy and not even using resources given to you?   What
>> kind of flower do you want to draw?
>> Look up converting converting polar or spherical coordinates to Cartesian
>> coordinates would be a good start.  Also look up L-systems and graftals.
>> John
>> On Sat, Jul 3, 2021 at 6:53 PM John Carlson <yottzumm at gmail.com> wrote:
>>> I would start out with something like Processing, not php.
>>> Good luck!
>>> On Sat, Jul 3, 2021 at 6:51 PM John Carlson <yottzumm at gmail.com> wrote:
>>>> I’ve never heard of php doing drawings.  You mean SVG or X3D?
>>>> https://en.m.wikipedia.org/wiki/Rose_(mathematics)
>>>> I don’t know about real flowers.   Good luck with that.
>>>> Number theory is really an odd choice, but I guess I suggested
>>>> Fibonacci.  That was more for numbers of petals.
>>>> John
>>>> On Sat, Jul 3, 2021 at 6:41 PM Konstantin Smirnov <
>>>> konstantin.e.smirnov at gmail.com> wrote:
>>>>> Thanks! I mean simple algorithm or formulas, for example on php, that
>>>>> can easily draw flowers with math, number theory. For example, some flowers
>>>>> may have structure like math equations solutions.
>>>>> Or for beginning, simply drawing a flower on php code.
>>>>> вс, 4 июл. 2021 г., 01:19 John Carlson <yottzumm at gmail.com>:
>>>>>> Mathematical Roses or Rhodonea should jump start you.   Also look up
>>>>>> @sxywu on Twitter.   Her data sketches book may have specifics for a
>>>>>> variety of “flowers”. For a more techy look, find Maurer Roses.
>>>>>> I don’t know what you mean by Nt.   You can find shaders or
>>>>>> JavaScript code in X3DJSONLD.   File names with “flower” or contents of
>>>>>> “rose” will likely give you a jump start in 3D, but they are quite
>>>>>> artificial and even more so animated.  Plus it seems like my code is
>>>>>> currently in a non-working state.
>>>>>> I would try something with Fibonacci, golden ratio to get things more
>>>>>> natural, or perhaps particle systems for imperfections.
>>>>>> For previews, checkout https://codextreme.net. One can get quite a
>>>>>> lot of diversity with parametric equations, especially when animating
>>>>>> parameters.
>>>>>> http://www.grad.hr/sgorjanc/Links/roses.pdf
>>>>>> Good luck!
>>>>>> On Sat, Jul 3, 2021 at 11:45 AM Konstantin Smirnov <
>>>>>> konstantin.e.smirnov at gmail.com> wrote:
>>>>>>> Hi
>>>>>>> Who knows formulas that can be used for drawing of flowers? Nt or
>>>>>>> algorithms
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