⬅️ Back to Table of Contents

📄 MaxMipLevelNode.js

📊 Analysis Summary

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

📚 Table of Contents

• Imports
• Variables & Constants
• Functions
• Classes

🛠️ File Location:

📂 src/nodes/utils/MaxMipLevelNode.js

📦 Imports

Name	Source
UniformNode	../core/UniformNode.js
NodeUpdateType	../core/constants.js
nodeProxy	../tsl/TSLBase.js

---

Variables & Constants

Name	Type	Kind	Value	Exported
texture	Texture	let/var	this.texture	✗
images	any	let/var	texture.images	✗
image	any	let/var	( images && images.length > 0 ) ? ( ( images[ 0 ] && images[ 0 ].image ) \|\|...	✗

---

Functions

MaxMipLevelNode.update(): void

Returns: void

Calls:

• Math.log2
• Math.max

Code

update() {

        const texture = this.texture;
        const images = texture.images;
        const image = ( images && images.length > 0 ) ? ( ( images[ 0 ] && images[ 0 ].image ) || images[ 0 ] ) : texture.image;

        if ( image && image.width !== undefined ) {

            const { width, height } = image;

            this.value = Math.log2( Math.max( width, height ) );

        }

    }

---

Classes

MaxMipLevelNode

Class Code

class MaxMipLevelNode extends UniformNode {

    static get type() {

        return 'MaxMipLevelNode';

    }

    /**
     * Constructs a new max mip level node.
     *
     * @param {TextureNode} textureNode - The texture node to compute the max mip level for.
     */
    constructor( textureNode ) {

        super( 0 );

        /**
         * The texture node to compute the max mip level for.
         *
         * @private
         * @type {TextureNode}
         */
        this._textureNode = textureNode;

        /**
         * The `updateType` is set to `NodeUpdateType.FRAME` since the node updates
         * the texture once per frame in its {@link MaxMipLevelNode#update} method.
         *
         * @type {string}
         * @default 'frame'
         */
        this.updateType = NodeUpdateType.FRAME;

    }

    /**
     * The texture node to compute the max mip level for.
     *
     * @readonly
     * @type {TextureNode}
     */
    get textureNode() {

        return this._textureNode;

    }

    /**
     * The texture.
     *
     * @readonly
     * @type {Texture}
     */
    get texture() {

        return this._textureNode.value;

    }

    update() {

        const texture = this.texture;
        const images = texture.images;
        const image = ( images && images.length > 0 ) ? ( ( images[ 0 ] && images[ 0 ].image ) || images[ 0 ] ) : texture.image;

        if ( image && image.width !== undefined ) {

            const { width, height } = image;

            this.value = Math.log2( Math.max( width, height ) );

        }

    }

}

Methods

update(): void

Code

update() {

        const texture = this.texture;
        const images = texture.images;
        const image = ( images && images.length > 0 ) ? ( ( images[ 0 ] && images[ 0 ].image ) || images[ 0 ] ) : texture.image;

        if ( image && image.width !== undefined ) {

            const { width, height } = image;

            this.value = Math.log2( Math.max( width, height ) );

        }

    }

---