CONTENT_VALIDATION_ERROR

[Ananthu-Prakash]

Hello,
I have successfully generated 3d tiles using following command
java -jar /home/akshay/Desktop/mago_1.8/mago-3d-tiler-1.8.1-natives-linux.jar --input "/home/akshay/Desktop/mago_1.8/bhavnagar/water_line_z/bhavnagr_water_z.shp" --inputType shp -c 32643 -hc pipe_depth -dc pipe_dia_i --output "/home/akshay/Desktop/mago_1.8/bhavnagar/water_3d/"

I am trying to visualise it using cesium, there it is giving me this error
A 3D tile failed to load: http://192.168.20.66:5501/PCMC/data/pcmc_water/data/R00C31.b3dm

so I tried to use this command to check if tiles are in proper format
npx 3d-tiles-validator --tilesetFile data/pcmc_water/tileset.json

there i get this in response which states 'The feature table binary must be aligned to 8 bytes'

this is the response for single tile for showing purpose, similar responses can also be seen for other tiles
{
"type": "CONTENT_VALIDATION_ERROR",
"path": "data/R00C20.b3dm",
"message": "data/R00C20.b3dm caused validation errors",
"severity": "ERROR",
"causes": [
{
"type": "BINARY_INVALID_ALIGNMENT",
"path": "data/R00C20.b3dm",
"message": "The feature table binary must be aligned to 8 bytes",
"severity": "ERROR"
}
]
}

How can it be corrected, this is the sample shapefile data that I am using to generate 3d tiles
selected_water_line.zip

[sdson]

Hi @Ananthu-Prakash !

The error produced in the b3dm conversion of "selected_water_line" is an error of the Mago3DTiler.
This is error is produced when the input data has less than 100 water-pipe-lines.
This error is produced by the progress-bar made by us.

Probably the b3dm you made has no geometry data.
if your "selected_water_lines" file has more than 100 water-pipe-lines, there are no error.

You must convert the water-pipes-lines as always.

Wait few days to correct this error in the release version.

[Ananthu-Prakash]

Hello,
Thanks for the response.
Actually no. of pipelines that I am converting is more than 100, but for only showing purpose I shared limited data.
I am trying to avail the selective visibility of 3d pipelines, based on certain criteria entered by the user for that in cesium, I am using following code

tileset.tileLoad.addEventListener(function (tile) {
const content = tile.content;

for (let i = 0; i < content.innerContents.length; i++) {
const innerContent = content.innerContents[i];
const groupMetadata = innerContent.group?.metadata;
if (Cesium.defined(groupMetadata)) {
const diameter = groupMetadata.getProperty("pipe_depth");
if (Cesium.defined(diameter)) {
console.log('diameter do exists')
}
}

when i try to run this code, it is giving me error
A 3D tile failed to load: http://192.168.20.66:5501/PCMC/data/pcmc_water/data/R00C31.b3dm

even though I can see the 3d tiles on the screen, this might be probably because innerContents inside content is coming undefined when i try to see content by console logging it.

I want to know like is it really a possibility or is there any other thing that I can try.

Thank you.

[sdson]

Hi @Ananthu-Prakash !

Ok. We reproduced the same error.

"A 3D tile failed to load: http://localhost/f4d/3dtiles/selected_water_line.shp/data/RC0.b3dm
Cesium3DTileset.js:2648 Error: Cannot read properties of undefined (reading 'length')"

wait a little please

[Ananthu-Prakash]

Thank you sir. Please let me know when it is done.

[sdson]

Using this script :

tileset.tileLoad.addEventListener(function (tile) {  
const content = tile.content;

let featuresLength = content.featuresLength;
for(let j=0; j<featuresLength; j++){
	let feature = content.getFeature(j);
	if(feature instanceof Cesium.Cesium3DTileFeature){
		let propertyNames = feature.getPropertyIds();
		for(let i=0; i<propertyNames.length; i++){
			let propertyName = propertyNames[i];
			let propertyValue = feature.getProperty(propertyName);
			console.log(propertyName + " : " + propertyValue);
		}
	}
}
});

you can obtain all propertieNames & propertiesValues.

The output in the console :

this is useful?

[Ananthu-Prakash]

Hello sir,
Thanks for the response.
Yesterday I tried with the above code and it was giving me tile-wise attribute info also, but actually I do not know as to how can I lead this to visualising only that portion of the pipeline that satisfies criteria given by user based on this attribute info. So that's why I consider earlier approach, but I am also fine with this one.

It will be really helpful if you could guide me as to how can I lead this info to selective visualisation.

updateModelRotation(finalLongitude, finalLatitude,
278.53668, 0, 0)

currently I am using above cesium function through which I am able to zoom to pipe location that is satisfying given criteria, but now I want only that particular pipe visble, but currently all pipes are visible and it is only zooming to pipe satisfying the criteria.
Thank you.

[sdson]

I really no expert in cesium, but you can go to webpage "https://cesium.com/learn/cesiumjs-learn/cesiumjs-3d-tiles-styling/" and there are ways to filter objects by the propertiy.

in the webpage there are a sandcastle example and you can see the code. There are a script to filter objects by property.

In the example code, filters objects and shows only objects that are "residential" or "apartments" :

// Show features based on property
function showFeaturesWithProperty() {
  osmBuildingsTileset.style = new Cesium.Cesium3DTileStyle({
    show: "${feature['building']} === 'residential' || ${feature['building']} === 'apartments'",
  });
}

[Ananthu-Prakash]

ok sir, I will try this.

[sdson]

ok. The web page :