I am in possession of 10,000 entities in cesium. What is the best way to avoid using a loop to modify their material?

Starting

new Cesium.PolylineGlowMaterialProperty({
            glowPower: 0.15,
            color: Cesium.Color.fromCssColorString("rgba(42,92,170, 0.15)")
        });

Ending

new Cesium.PolylineGlowMaterialProperty({
            glowPower: 0.3,
            color: Cesium.Color.fromCssColorString("rgba(255,255,255, 0.15)")
        });

Can we update all the materials collectively?

Answer №1

To efficiently update the properties of all entities, consider looping through them without creating a new PolylingGlowMaterial for each entity. Instead, modify the existing material to improve performance. If the property is constant and non-time-varying, use the setValue method as shown below:

entity.polyline.material.glowPower.setValue(0.3);
entity.polyline.material.color.setValue(Cesium.Color.WHITE.withAlpha(0.15));

Another tip is to preallocate the color outside the loop if all entities will have the same color. This way, you avoid parsing numerous color strings repeatedly.

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