[x3d-public] Formulas of flowers

[Konstantin Smirnov]

Yes! I am looking for simple code that can use curves of roses to draw them

вс, 4 июл. 2021 г., 03:40 John Carlson <yottzumm at gmail.com>:

> Not using my imagination here much…would something like this do the trick?
>
> https://www.php.net/manual/en/function.imageline.php
>
>
> 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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>>>>>>>>
>>>>>>>
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