[x3d-public] Formulas of flowers

[John Carlson]

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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