[x3d-public] Fwd: Wed Nov 19 - X3D-AI Working Group Meeting

[John Carlson]

Sorry for double post.  I was unaware of images included.

Apparently, this JavaScript code:

function readfloat(name, view) {
        const f = view.getFloat32(offset, true); offset += 4;
        // console.log(name, f);
        return f;
}

puts out Infinity, which Castle complains about, which it should.
Apparently, the infinity is originally found in a .ply Gaussian splat file
for a color or opacity float32 field.  Yes, I realize that the color
channel color values are very strange!  Note that -Infinity has a different
error than Infinity.

This is in a  ColorRGBA.color field:

$ fold mug_space.x3d Merrifield_fireplace.x3d |grep Infinity
589,0.298884,0.229376,-1.43606,-1.77245,-1.77245,-1.77245,-Infinity,1.18859,1.06
7,1.03418,Infinity,1.08301,0.969727,0.860352,15.9424,1.96289,1.96777,1.92773,-1.
1.38965,1.33789,1.28711,Infinity,1.50879,1.79102,1.36328,-1.03186,2.01367,2.0195

Here's current test code:

X3DJSONLD/src/main/node/convertPlyToX3d.js at master ·
coderextreme/X3DJSONLD
<https://github.com/coderextreme/X3DJSONLD/blob/master/src/main/node/convertPlyToX3d.js>
X3DJSONLD/src/main/node/testPlyToX3d.js at master · coderextreme/X3DJSONLD
<https://github.com/coderextreme/X3DJSONLD/blob/master/src/main/node/testPlyToX3d.js>

It will download appropriate .ply file and place the .x3d in the local
folder after converting.

Requires a node.js compatible JavaScript run-time.


Thanks,

John
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