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📄 WebGLObjects.js

📊 Analysis Summary

Metric	Count
🔧 Functions	4
📊 Variables & Constants	5

📚 Table of Contents

• Variables & Constants
• Functions

🛠️ File Location:

📂 src/renderers/webgl/WebGLObjects.js

Variables & Constants

Name	Type	Kind	Value	Exported
updateMap	WeakMap<WeakKey, any>	let/var	new WeakMap()	✗
frame	any	let/var	info.render.frame	✗
geometry	any	let/var	object.geometry	✗
skeleton	any	let/var	object.skeleton	✗
instancedMesh	any	let/var	event.target	✗

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Functions

WebGLObjects(gl: any, geometries: any, attributes: any, info: any): { update: (object: any) => any; dispose: () => void; }

Parameters:

• gl any
• geometries any
• attributes any
• info any

Returns: { update: (object: any) => any; dispose: () => void; }

Calls:

• geometries.get
• updateMap.get
• geometries.update
• updateMap.set
• object.hasEventListener
• object.addEventListener
• attributes.update
• skeleton.update
• instancedMesh.removeEventListener
• attributes.remove

Internal Comments:

// Update once per frame

Code

function WebGLObjects( gl, geometries, attributes, info ) {

    let updateMap = new WeakMap();

    function update( object ) {

        const frame = info.render.frame;

        const geometry = object.geometry;
        const buffergeometry = geometries.get( object, geometry );

        // Update once per frame

        if ( updateMap.get( buffergeometry ) !== frame ) {

            geometries.update( buffergeometry );

            updateMap.set( buffergeometry, frame );

        }

        if ( object.isInstancedMesh ) {

            if ( object.hasEventListener( 'dispose', onInstancedMeshDispose ) === false ) {

                object.addEventListener( 'dispose', onInstancedMeshDispose );

            }

            if ( updateMap.get( object ) !== frame ) {

                attributes.update( object.instanceMatrix, gl.ARRAY_BUFFER );

                if ( object.instanceColor !== null ) {

                    attributes.update( object.instanceColor, gl.ARRAY_BUFFER );

                }

                updateMap.set( object, frame );

            }

        }

        if ( object.isSkinnedMesh ) {

            const skeleton = object.skeleton;

            if ( updateMap.get( skeleton ) !== frame ) {

                skeleton.update();

                updateMap.set( skeleton, frame );

            }

        }

        return buffergeometry;

    }

    function dispose() {

        updateMap = new WeakMap();

    }

    function onInstancedMeshDispose( event ) {

        const instancedMesh = event.target;

        instancedMesh.removeEventListener( 'dispose', onInstancedMeshDispose );

        attributes.remove( instancedMesh.instanceMatrix );

        if ( instancedMesh.instanceColor !== null ) attributes.remove( instancedMesh.instanceColor );

    }

    return {

        update: update,
        dispose: dispose

    };

}

update(object: any): any

Parameters:

• object any

Returns: any

Calls:

• geometries.get
• updateMap.get
• geometries.update
• updateMap.set
• object.hasEventListener
• object.addEventListener
• attributes.update
• skeleton.update

Internal Comments:

// Update once per frame

Code

function update( object ) {

        const frame = info.render.frame;

        const geometry = object.geometry;
        const buffergeometry = geometries.get( object, geometry );

        // Update once per frame

        if ( updateMap.get( buffergeometry ) !== frame ) {

            geometries.update( buffergeometry );

            updateMap.set( buffergeometry, frame );

        }

        if ( object.isInstancedMesh ) {

            if ( object.hasEventListener( 'dispose', onInstancedMeshDispose ) === false ) {

                object.addEventListener( 'dispose', onInstancedMeshDispose );

            }

            if ( updateMap.get( object ) !== frame ) {

                attributes.update( object.instanceMatrix, gl.ARRAY_BUFFER );

                if ( object.instanceColor !== null ) {

                    attributes.update( object.instanceColor, gl.ARRAY_BUFFER );

                }

                updateMap.set( object, frame );

            }

        }

        if ( object.isSkinnedMesh ) {

            const skeleton = object.skeleton;

            if ( updateMap.get( skeleton ) !== frame ) {

                skeleton.update();

                updateMap.set( skeleton, frame );

            }

        }

        return buffergeometry;

    }

dispose(): void

Returns: void

Code

function dispose() {

        updateMap = new WeakMap();

    }

onInstancedMeshDispose(event: any): void

Parameters:

• event any

Returns: void

Calls:

• instancedMesh.removeEventListener
• attributes.remove

Code

function onInstancedMeshDispose( event ) {

        const instancedMesh = event.target;

        instancedMesh.removeEventListener( 'dispose', onInstancedMeshDispose );

        attributes.remove( instancedMesh.instanceMatrix );

        if ( instancedMesh.instanceColor !== null ) attributes.remove( instancedMesh.instanceColor );

    }

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