📄 `WebGLGeometries.js`¶

📊 Analysis Summary¶

Metric	Count
🔧 Functions	6
📦 Imports	3
📊 Variables & Constants	18

📚 Table of Contents¶

Imports
Variables & Constants
Functions

🛠️ File Location:¶

📂 src/renderers/webgl/WebGLGeometries.js

📦 Imports¶

Name	Source
`Uint16BufferAttribute`	`../../core/BufferAttribute.js`
`Uint32BufferAttribute`	`../../core/BufferAttribute.js`
`arrayNeedsUint32`	`../../utils.js`

Variables & Constants¶

Name	Type	Kind	Value	Exported
`geometries`	`{}`	let/var	`{}`	✗
`wireframeAttributes`	`WeakMap<WeakKey, any>`	let/var	`new WeakMap()`	✗
`geometry`	`any`	let/var	`event.target`	✗
`geometryAttributes`	`any`	let/var	`geometry.attributes`	✗
`indices`	`any[]`	let/var	`[]`	✗
`geometryIndex`	`any`	let/var	`geometry.index`	✗
`geometryPosition`	`any`	let/var	`geometry.attributes.position`	✗
`version`	`number`	let/var	`0`	✗
`array`	`any`	let/var	`geometryIndex.array`	✗
`a`	`any`	let/var	`array[ i + 0 ]`	✗
`b`	`any`	let/var	`array[ i + 1 ]`	✗
`c`	`any`	let/var	`array[ i + 2 ]`	✗
`array`	`any`	let/var	`geometryPosition.array`	✗
`a`	`number`	let/var	`i + 0`	✗
`b`	`number`	let/var	`i + 1`	✗
`c`	`number`	let/var	`i + 2`	✗
`attribute`	`Uint32BufferAttribute \\| Uint16Buffer...`	let/var	`new ( arrayNeedsUint32( indices ) ? Uint32BufferAttribute : Uint16BufferAttri...`	✗
`geometryIndex`	`any`	let/var	`geometry.index`	✗

Functions¶

`WebGLGeometries(gl: any, attributes: any, info: any, bindingStates: any): { get: (object: any, geometry: any) => any; update: (geometry: any) => void; getWireframeAttribute: (geometry: any) => any; }`¶

Parameters:

gl any
attributes any
info any
bindingStates any

Returns: { get: (object: any, geometry: any) => any; update: (geometry: any) => void; getWireframeAttribute: (geometry: any) => any; }

Calls:

attributes.remove
geometry.removeEventListener
wireframeAttributes.get
wireframeAttributes.delete
bindingStates.releaseStatesOfGeometry
geometry.addEventListener
attributes.update
indices.push
arrayNeedsUint32 (from ../../utils.js)
wireframeAttributes.set
updateWireframeAttribute

Internal Comments:

// (x11)
// Updating index buffer in VAO now. See WebGLBindingStates.
// Updating index buffer in VAO now. See WebGLBindingStates (x2)
// if the attribute is obsolete, create a new one

Code

function WebGLGeometries( gl, attributes, info, bindingStates ) {

    const geometries = {};
    const wireframeAttributes = new WeakMap();

    function onGeometryDispose( event ) {

        const geometry = event.target;

        if ( geometry.index !== null ) {

            attributes.remove( geometry.index );

        }

        for ( const name in geometry.attributes ) {

            attributes.remove( geometry.attributes[ name ] );

        }

        geometry.removeEventListener( 'dispose', onGeometryDispose );

        delete geometries[ geometry.id ];

        const attribute = wireframeAttributes.get( geometry );

        if ( attribute ) {

            attributes.remove( attribute );
            wireframeAttributes.delete( geometry );

        }

        bindingStates.releaseStatesOfGeometry( geometry );

        if ( geometry.isInstancedBufferGeometry === true ) {

            delete geometry._maxInstanceCount;

        }

        //

        info.memory.geometries --;

    }

    function get( object, geometry ) {

        if ( geometries[ geometry.id ] === true ) return geometry;

        geometry.addEventListener( 'dispose', onGeometryDispose );

        geometries[ geometry.id ] = true;

        info.memory.geometries ++;

        return geometry;

    }

    function update( geometry ) {

        const geometryAttributes = geometry.attributes;

        // Updating index buffer in VAO now. See WebGLBindingStates.

        for ( const name in geometryAttributes ) {

            attributes.update( geometryAttributes[ name ], gl.ARRAY_BUFFER );

        }

    }

    function updateWireframeAttribute( geometry ) {

        const indices = [];

        const geometryIndex = geometry.index;
        const geometryPosition = geometry.attributes.position;
        let version = 0;

        if ( geometryIndex !== null ) {

            const array = geometryIndex.array;
            version = geometryIndex.version;

            for ( let i = 0, l = array.length; i < l; i += 3 ) {

                const a = array[ i + 0 ];
                const b = array[ i + 1 ];
                const c = array[ i + 2 ];

                indices.push( a, b, b, c, c, a );

            }

        } else if ( geometryPosition !== undefined ) {

            const array = geometryPosition.array;
            version = geometryPosition.version;

            for ( let i = 0, l = ( array.length / 3 ) - 1; i < l; i += 3 ) {

                const a = i + 0;
                const b = i + 1;
                const c = i + 2;

                indices.push( a, b, b, c, c, a );

            }

        } else {

            return;

        }

        const attribute = new ( arrayNeedsUint32( indices ) ? Uint32BufferAttribute : Uint16BufferAttribute )( indices, 1 );
        attribute.version = version;

        // Updating index buffer in VAO now. See WebGLBindingStates

        //

        const previousAttribute = wireframeAttributes.get( geometry );

        if ( previousAttribute ) attributes.remove( previousAttribute );

        //

        wireframeAttributes.set( geometry, attribute );

    }

    function getWireframeAttribute( geometry ) {

        const currentAttribute = wireframeAttributes.get( geometry );

        if ( currentAttribute ) {

            const geometryIndex = geometry.index;

            if ( geometryIndex !== null ) {

                // if the attribute is obsolete, create a new one

                if ( currentAttribute.version < geometryIndex.version ) {

                    updateWireframeAttribute( geometry );

                }

            }

        } else {

            updateWireframeAttribute( geometry );

        }

        return wireframeAttributes.get( geometry );

    }

    return {

        get: get,
        update: update,

        getWireframeAttribute: getWireframeAttribute

    };

}

`onGeometryDispose(event: any): void`¶

Parameters:

event any

Returns: void

Calls:

attributes.remove
geometry.removeEventListener
wireframeAttributes.get
wireframeAttributes.delete
bindingStates.releaseStatesOfGeometry

Internal Comments:

// (x5)

Code

function onGeometryDispose( event ) {

        const geometry = event.target;

        if ( geometry.index !== null ) {

            attributes.remove( geometry.index );

        }

        for ( const name in geometry.attributes ) {

            attributes.remove( geometry.attributes[ name ] );

        }

        geometry.removeEventListener( 'dispose', onGeometryDispose );

        delete geometries[ geometry.id ];

        const attribute = wireframeAttributes.get( geometry );

        if ( attribute ) {

            attributes.remove( attribute );
            wireframeAttributes.delete( geometry );

        }

        bindingStates.releaseStatesOfGeometry( geometry );

        if ( geometry.isInstancedBufferGeometry === true ) {

            delete geometry._maxInstanceCount;

        }

        //

        info.memory.geometries --;

    }

`get(object: any, geometry: any): any`¶

Parameters:

object any
geometry any

Returns: any

Calls:

geometry.addEventListener

Code

function get( object, geometry ) {

        if ( geometries[ geometry.id ] === true ) return geometry;

        geometry.addEventListener( 'dispose', onGeometryDispose );

        geometries[ geometry.id ] = true;

        info.memory.geometries ++;

        return geometry;

    }

`update(geometry: any): void`¶

Parameters:

geometry any

Returns: void

Calls:

attributes.update

Internal Comments:

// Updating index buffer in VAO now. See WebGLBindingStates.

Code

function update( geometry ) {

        const geometryAttributes = geometry.attributes;

        // Updating index buffer in VAO now. See WebGLBindingStates.

        for ( const name in geometryAttributes ) {

            attributes.update( geometryAttributes[ name ], gl.ARRAY_BUFFER );

        }

    }

`updateWireframeAttribute(geometry: any): void`¶

Parameters:

geometry any

Returns: void

Calls:

indices.push
arrayNeedsUint32 (from ../../utils.js)
wireframeAttributes.get
attributes.remove
wireframeAttributes.set

Internal Comments:

// Updating index buffer in VAO now. See WebGLBindingStates (x2)
// (x6)

Code

function updateWireframeAttribute( geometry ) {

        const indices = [];

        const geometryIndex = geometry.index;
        const geometryPosition = geometry.attributes.position;
        let version = 0;

        if ( geometryIndex !== null ) {

            const array = geometryIndex.array;
            version = geometryIndex.version;

            for ( let i = 0, l = array.length; i < l; i += 3 ) {

                const a = array[ i + 0 ];
                const b = array[ i + 1 ];
                const c = array[ i + 2 ];

                indices.push( a, b, b, c, c, a );

            }

        } else if ( geometryPosition !== undefined ) {

            const array = geometryPosition.array;
            version = geometryPosition.version;

            for ( let i = 0, l = ( array.length / 3 ) - 1; i < l; i += 3 ) {

                const a = i + 0;
                const b = i + 1;
                const c = i + 2;

                indices.push( a, b, b, c, c, a );

            }

        } else {

            return;

        }

        const attribute = new ( arrayNeedsUint32( indices ) ? Uint32BufferAttribute : Uint16BufferAttribute )( indices, 1 );
        attribute.version = version;

        // Updating index buffer in VAO now. See WebGLBindingStates

        //

        const previousAttribute = wireframeAttributes.get( geometry );

        if ( previousAttribute ) attributes.remove( previousAttribute );

        //

        wireframeAttributes.set( geometry, attribute );

    }

`getWireframeAttribute(geometry: any): any`¶

Parameters:

geometry any

Returns: any

Calls:

wireframeAttributes.get
updateWireframeAttribute

Internal Comments:

// if the attribute is obsolete, create a new one

Code

function getWireframeAttribute( geometry ) {

        const currentAttribute = wireframeAttributes.get( geometry );

        if ( currentAttribute ) {

            const geometryIndex = geometry.index;

            if ( geometryIndex !== null ) {

                // if the attribute is obsolete, create a new one

                if ( currentAttribute.version < geometryIndex.version ) {

                    updateWireframeAttribute( geometry );

                }

            }

        } else {

            updateWireframeAttribute( geometry );

        }

        return wireframeAttributes.get( geometry );

    }

📄 WebGLGeometries.js¶

📊 Analysis Summary¶

📚 Table of Contents¶

🛠️ File Location:¶

📦 Imports¶

Variables & Constants¶

Functions¶

WebGLGeometries(gl: any, attributes: any, info: any, bindingStates: any): { get: (object: any, geometry: any) => any; update: (geometry: any) => void; getWireframeAttribute: (geometry: any) => any; }¶

onGeometryDispose(event: any): void¶

get(object: any, geometry: any): any¶

update(geometry: any): void¶

updateWireframeAttribute(geometry: any): void¶

getWireframeAttribute(geometry: any): any¶

📄 `WebGLGeometries.js`¶

`WebGLGeometries(gl: any, attributes: any, info: any, bindingStates: any): { get: (object: any, geometry: any) => any; update: (geometry: any) => void; getWireframeAttribute: (geometry: any) => any; }`¶

`onGeometryDispose(event: any): void`¶

`get(object: any, geometry: any): any`¶

`update(geometry: any): void`¶

`updateWireframeAttribute(geometry: any): void`¶

`getWireframeAttribute(geometry: any): any`¶