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📄 SpotLightShadow.js

📊 Analysis Summary

Metric	Count
🔧 Functions	2
🧱 Classes	1
📦 Imports	3
📊 Variables & Constants	4

📚 Table of Contents

• Imports
• Variables & Constants
• Functions
• Classes

🛠️ File Location:

📂 src/lights/SpotLightShadow.js

📦 Imports

Name	Source
LightShadow	./LightShadow.js
RAD2DEG	../math/MathUtils.js
PerspectiveCamera	../cameras/PerspectiveCamera.js

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Variables & Constants

Name	Type	Kind	Value	Exported
camera	Camera	let/var	this.camera	✗
fov	number	let/var	RAD2DEG * 2 * light.angle * this.focus	✗
aspect	number	let/var	( this.mapSize.width / this.mapSize.height ) * this.aspect	✗
far	any	let/var	light.distance \|\| camera.far	✗

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Functions

SpotLightShadow.updateMatrices(light: any): void

Parameters:

• light any

Returns: void

Calls:

• camera.updateProjectionMatrix
• super.updateMatrices

Code

updateMatrices( light ) {

        const camera = this.camera;

        const fov = RAD2DEG * 2 * light.angle * this.focus;
        const aspect = ( this.mapSize.width / this.mapSize.height ) * this.aspect;
        const far = light.distance || camera.far;

        if ( fov !== camera.fov || aspect !== camera.aspect || far !== camera.far ) {

            camera.fov = fov;
            camera.aspect = aspect;
            camera.far = far;
            camera.updateProjectionMatrix();

        }

        super.updateMatrices( light );

    }

SpotLightShadow.copy(source: any): this

Parameters:

• source any

Returns: this

Calls:

• super.copy

Code

copy( source ) {

        super.copy( source );

        this.focus = source.focus;

        return this;

    }

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Classes

SpotLightShadow

Class Code

class SpotLightShadow extends LightShadow {

    /**
     * Constructs a new spot light shadow.
     */
    constructor() {

        super( new PerspectiveCamera( 50, 1, 0.5, 500 ) );

        /**
         * This flag can be used for type testing.
         *
         * @type {boolean}
         * @readonly
         * @default true
         */
        this.isSpotLightShadow = true;

        /**
         * Used to focus the shadow camera. The camera's field of view is set as a
         * percentage of the spotlight's field-of-view. Range is `[0, 1]`.
         *
         * @type {number}
         * @default 1
         */
        this.focus = 1;

        /**
         * Texture aspect ratio.
         *
         * @type {number}
         * @default 1
         */
        this.aspect = 1;

    }

    updateMatrices( light ) {

        const camera = this.camera;

        const fov = RAD2DEG * 2 * light.angle * this.focus;
        const aspect = ( this.mapSize.width / this.mapSize.height ) * this.aspect;
        const far = light.distance || camera.far;

        if ( fov !== camera.fov || aspect !== camera.aspect || far !== camera.far ) {

            camera.fov = fov;
            camera.aspect = aspect;
            camera.far = far;
            camera.updateProjectionMatrix();

        }

        super.updateMatrices( light );

    }

    copy( source ) {

        super.copy( source );

        this.focus = source.focus;

        return this;

    }

}

Methods

updateMatrices(light: any): void

Code

updateMatrices( light ) {

        const camera = this.camera;

        const fov = RAD2DEG * 2 * light.angle * this.focus;
        const aspect = ( this.mapSize.width / this.mapSize.height ) * this.aspect;
        const far = light.distance || camera.far;

        if ( fov !== camera.fov || aspect !== camera.aspect || far !== camera.far ) {

            camera.fov = fov;
            camera.aspect = aspect;
            camera.far = far;
            camera.updateProjectionMatrix();

        }

        super.updateMatrices( light );

    }

copy(source: any): this

Code

copy( source ) {

        super.copy( source );

        this.focus = source.focus;

        return this;

    }

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