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node_modules/three/src/lights/RectAreaLight.js

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+import { Light } from './Light.js';
+
+class RectAreaLight extends Light {
+
+	constructor( color, intensity, width = 10, height = 10 ) {
+
+		super( color, intensity );
+
+		this.isRectAreaLight = true;
+
+		this.type = 'RectAreaLight';
+
+		this.width = width;
+		this.height = height;
+
+	}
+
+	get power() {
+
+		// compute the light's luminous power (in lumens) from its intensity (in nits)
+		return this.intensity * this.width * this.height * Math.PI;
+
+	}
+
+	set power( power ) {
+
+		// set the light's intensity (in nits) from the desired luminous power (in lumens)
+		this.intensity = power / ( this.width * this.height * Math.PI );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.width = source.width;
+		this.height = source.height;
+
+		return this;
+
+	}
+
+	toJSON( meta ) {
+
+		const data = super.toJSON( meta );
+
+		data.object.width = this.width;
+		data.object.height = this.height;
+
+		return data;
+
+	}
+
+}
+
+export { RectAreaLight };