[x3d-public] Your mission, should you choose to accept it. ComposedShader+ParticleSystem

[John Carlson]

This may be easier to view:

coderextreme.net/X3DJSONLD/src/main/html/particles.html

It's essentially the same as the .x3d file, just with an HTML wrapping for
viewing.

John

On Mon, Apr 22, 2024 at 3:40 PM John Carlson <yottzumm at gmail.com> wrote:

> Woohoo!
>
> $ npx sunrize
> https://coderextreme.net/X3DJSONLD/src/main/data/particleflowers.x3d
>
> Now to think about animating individual flowers! Here are the fields to
> the Shader:
>
>                   <field name='a' type='SFFloat' accessType='inputOutput'
> value='2'></field>
>                   <field name='b' type='SFFloat' accessType='inputOutput'
> value='1'></field>
>                   <field name='c' type='SFFloat' accessType='inputOutput'
> value='5'></field>
>                   <field name='d' type='SFFloat' accessType='inputOutput'
> value='5'></field>
>                   <field name='tdelta' type='SFFloat'
> accessType='inputOutput' value='0'></field>
>                   <field name='pdelta' type='SFFloat'
> accessType='inputOutput' value='0'></field>
>
> I want different values for each instance, and I want them animated over
> time.
>
> My guess is to do randomness in the shader (Thanks Holger!).
>
> John
>
> On Sun, Apr 21, 2024 at 12:32 PM John Carlson <yottzumm at gmail.com> wrote:
>
>> Michalis, Holger, Doug, Don,
>>
>> On the tails of Holger's message about GPU instancing...
>>
>> It's easier to send email to you all rather than filing a report on your
>> websites.
>>
>> I'd like to get a fairly simple Particle System working with a
>> ComposedShader (different for each of you).
>>
>> I am attaching the .x3d file and the shaders.
>>
>> I've gotten the ComposedShader working for a single sphere for each of
>> your systems, but getting it working with a Particle System and
>> ComposedShader seems difficult.
>>
>> I've gotten the Particle System working in sunrize.
>>
>> There's a Problem with BoundedPhysicsModel geometry in view3dscene.
>>
>> Don,
>>
>> CommandLine doesn't validate the scene AFAICT.
>>
>> $ java -cp ~/Downloads/X3DJSAIL.4.0.full.jar
>> org.web3d.x3d.jsail.CommandLine -validate `pwd`/particleflowers.x3d
>> CommandLine parameter: "-validate" for model validation
>> parameter: source file particleflowers.x3d filesize 6208 bytes
>> Parsing using Document Object Model (DOM) based X3DLoaderDOM...
>> [error] X3DLoaderDOM: Incorrectly handled X3DJSAIL object construction,
>> current elementObject=BoundedPhysicsModel (BoundedPhysicsModel),
>> child="Sphere", containerField="geometry", java.lang.ClassCastException:
>> class org.web3d.x3d.jsail.ParticleSystems.BoundedPhysicsModel cannot be
>> cast to class org.web3d.x3d.jsail.Shape.Shape
>> (org.web3d.x3d.jsail.ParticleSystems.BoundedPhysicsModel and
>> org.web3d.x3d.jsail.Shape.Shape are in unnamed module of loader 'app')
>>     This error can be caused by incorrect parent-child node relationships
>> or incorrect containerField values.
>>     X3D node typing is strict, check or validate your scene graph!
>>     This error can also be caused by X3DLoaderDOM DOM omissions in
>> X3DJSAIL. Please report mysterious problems, thank you.
>>
>> java.lang.ClassCastException: class
>> org.web3d.x3d.jsail.ParticleSystems.BoundedPhysicsModel cannot be cast to
>> class org.web3d.x3d.jsail.Shape.Shape
>> (org.web3d.x3d.jsail.ParticleSystems.BoundedPhysicsModel and
>> org.web3d.x3d.jsail.Shape.Shape are in unnamed module of loader 'app')
>>         at
>> org.web3d.x3d.jsail.X3DLoaderDOM.toX3dModelInstance(X3DLoaderDOM.java:972)
>>         at
>> org.web3d.x3d.jsail.X3DLoaderDOM.toX3dModelInstance(X3DLoaderDOM.java:619)
>>         at
>> org.web3d.x3d.jsail.X3DLoaderDOM.toX3dModelInstance(X3DLoaderDOM.java:619)
>>         at
>> org.web3d.x3d.jsail.X3DLoaderDOM.toX3dModelInstance(X3DLoaderDOM.java:619)
>>         at
>> org.web3d.x3d.jsail.X3DLoaderDOM.toX3dModelInstance(X3DLoaderDOM.java:619)
>>         at
>> org.web3d.x3d.jsail.X3DLoaderDOM.toX3dModelInstance(X3DLoaderDOM.java:490)
>>         at
>> org.web3d.x3d.jsail.X3DLoaderDOM.toX3dModelInstance(X3DLoaderDOM.java:453)
>>         at
>> org.web3d.x3d.jsail.X3DLoaderDOM.loadModelFromFileX3D(X3DLoaderDOM.java:247)
>>         at
>> org.web3d.x3d.jsail.X3DLoaderDOM.loadModelFromFileX3D(X3DLoaderDOM.java:231)
>>         at
>> org.web3d.x3d.jsail.X3DLoaderDOM.loadModelFromFileX3D(X3DLoaderDOM.java:205)
>>         at org.web3d.x3d.jsail.CommandLine.run(CommandLine.java:922)
>>         at org.web3d.x3d.jsail.CommandLine.main(CommandLine.java:242)
>> [error] X3DLoaderDOM: Parent-child node relationship not found! (parent
>> ParticleSystem, child BoundedPhysicsModel, containerField='physics') Please
>> report this problem to brutzman at nps.edu
>>
>> Interesting challenge!
>>
>> Thanks,
>>
>> John
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://web3d.org/pipermail/x3d-public_web3d.org/attachments/20240422/ba77346d/attachment-0001.html>