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

[John Carlson]

Question: Why can't I put

        <style>
            x3d-canvas { width: 100%; height:100% }
        </style>

I think I've got the numbers right.

Thanks!

John

On Mon, Apr 22, 2024 at 5:32 PM John Carlson <yottzumm at gmail.com> wrote:

> 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
>>>
>>
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