185 lines
3.3 KiB
JavaScript
185 lines
3.3 KiB
JavaScript
/**
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* @author mrdoob / http://mrdoob.com/
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*/
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import { Uint16BufferAttribute, Uint32BufferAttribute } from '../../core/BufferAttribute.js';
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import { BufferGeometry } from '../../core/BufferGeometry.js';
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import { arrayMax } from '../../utils.js';
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function WebGLGeometries( gl, attributes, info ) {
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var geometries = {};
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var wireframeAttributes = {};
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function onGeometryDispose( event ) {
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var geometry = event.target;
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var buffergeometry = geometries[ geometry.id ];
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if ( buffergeometry.index !== null ) {
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attributes.remove( buffergeometry.index );
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}
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for ( var name in buffergeometry.attributes ) {
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attributes.remove( buffergeometry.attributes[ name ] );
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}
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geometry.removeEventListener( 'dispose', onGeometryDispose );
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delete geometries[ geometry.id ];
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var attribute = wireframeAttributes[ buffergeometry.id ];
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if ( attribute ) {
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attributes.remove( attribute );
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delete wireframeAttributes[ buffergeometry.id ];
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}
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//
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info.memory.geometries --;
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}
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function get( object, geometry ) {
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var buffergeometry = geometries[ geometry.id ];
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if ( buffergeometry ) return buffergeometry;
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geometry.addEventListener( 'dispose', onGeometryDispose );
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if ( geometry.isBufferGeometry ) {
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buffergeometry = geometry;
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} else if ( geometry.isGeometry ) {
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if ( geometry._bufferGeometry === undefined ) {
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geometry._bufferGeometry = new BufferGeometry().setFromObject( object );
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}
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buffergeometry = geometry._bufferGeometry;
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}
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geometries[ geometry.id ] = buffergeometry;
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info.memory.geometries ++;
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return buffergeometry;
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}
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function update( geometry ) {
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var index = geometry.index;
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var geometryAttributes = geometry.attributes;
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if ( index !== null ) {
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attributes.update( index, gl.ELEMENT_ARRAY_BUFFER );
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}
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for ( var name in geometryAttributes ) {
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attributes.update( geometryAttributes[ name ], gl.ARRAY_BUFFER );
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}
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// morph targets
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var morphAttributes = geometry.morphAttributes;
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for ( var name in morphAttributes ) {
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var array = morphAttributes[ name ];
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for ( var i = 0, l = array.length; i < l; i ++ ) {
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attributes.update( array[ i ], gl.ARRAY_BUFFER );
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}
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}
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}
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function getWireframeAttribute( geometry ) {
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var attribute = wireframeAttributes[ geometry.id ];
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if ( attribute ) return attribute;
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var indices = [];
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var geometryIndex = geometry.index;
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var geometryAttributes = geometry.attributes;
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// console.time( 'wireframe' );
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if ( geometryIndex !== null ) {
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var array = geometryIndex.array;
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for ( var i = 0, l = array.length; i < l; i += 3 ) {
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var a = array[ i + 0 ];
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var b = array[ i + 1 ];
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var c = array[ i + 2 ];
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indices.push( a, b, b, c, c, a );
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}
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} else {
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var array = geometryAttributes.position.array;
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for ( var i = 0, l = ( array.length / 3 ) - 1; i < l; i += 3 ) {
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var a = i + 0;
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var b = i + 1;
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var c = i + 2;
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indices.push( a, b, b, c, c, a );
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}
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}
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// console.timeEnd( 'wireframe' );
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attribute = new ( arrayMax( indices ) > 65535 ? Uint32BufferAttribute : Uint16BufferAttribute )( indices, 1 );
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attributes.update( attribute, gl.ELEMENT_ARRAY_BUFFER );
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wireframeAttributes[ geometry.id ] = attribute;
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return attribute;
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}
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return {
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get: get,
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update: update,
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getWireframeAttribute: getWireframeAttribute
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};
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}
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export { WebGLGeometries };
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