Default model & measurement units in Autodesk Forge Viewer3D

Question

Is there any way to globally set measure units and precision in Viewer3D? We do following steps after extension is loaded:

onExtensionLoaded(e) {
    if (e.extensionId === 'Autodesk.Measure') {
        const ext = this.viewer.getExtension('Autodesk.Measure');
        ext.snapper.setSnapToPixel(true);
        ext.sharedMeasureConfig.units = 'm';
        ext.sharedMeasureConfig.precision = 3;
        ext.measureTool.setUnits('m');
    }
    ...
}

We are not successful with predefining measure unit in Calibration dialog to meters. Also call:

ext.calibrationTool.getCurrentUnits();

Returns inches.

After investigation we found this magic line of code, where the zero index in combobox is selected:

CalibrationPanel.js:

this.unitList = new avp.OptionDropDown("Unit type", this.tbody, unitNames, 0, null, { paddingLeft: 0, paddingRight: 15});

We have not found any way to globally set units in Viewer3D. Are we missing anything?

Thanks for help.

Answer 1

There is no global way to obtain the info. you wanted since the measure tool now is a viewer extension. So, please use the following functions instead:

• For units: ext.getUnits()
• For precision: ext.getPrecision()