Can ModelSymbol (or something else) use feature attributes for model placement?

[mikeucfl]

When rendering a point vector dataset, is there already a way to use attributes from the feature data (for example, a model_path field and an orientation field) to determine both which model to place and how it’s positioned at each location?

I came across osgEarth::ModelSymbol, but from what I can tell, I don't believe I can define it in a way that it pulls the value from the dataset itself.

[gwaldron]

In ModelSymbol most of the properties are Expressions, so that means you can use JavaScript to access the feature data. For example

auto* model = style.getOrCreate<ModelSymbol>();
model->url() = StringExpression("return feature.properties.model_path;");
model->heading() = NumericExpression("return parseFloat(feature.properties.heading);";

Or in an earth file you would say

<style>
    default {
        model : feature.properties.model_path;
        model-heading : parseFloat(feature.properties.heading);
...

See the feature_models.earth example in the repo tests folder.

[mikeucfl]

Ahh okay thanks, I didn't have the syntax correct.