import { _Math } from '../math/Math';

/**

* @author benaadams / https://twitter.com/ben_a_adams

*/

function InterleavedBuffer( array, stride ) {

this.uuid = _Math.generateUUID();

this.array = array;

this.stride = stride;

this.count = array !== undefined ? array.length / stride : 0;

this.dynamic = false;

this.updateRange = { offset: 0, count: - 1 };

this.version = 0;

}

InterleavedBuffer.prototype = {

constructor: InterleavedBuffer,

isInterleavedBuffer: true,

set needsUpdate( value ) {

if ( value === true ) this.version ++;

},

setDynamic: function ( value ) {

this.dynamic = value;

return this;

},

copy: function ( source ) {

this.array = new source.array.constructor( source.array );

this.count = source.count;

this.stride = source.stride;

this.dynamic = source.dynamic;

return this;

},

copyAt: function ( index1, attribute, index2 ) {

index1 *= this.stride;

index2 *= attribute.stride;

for ( var i = 0, l = this.stride; i < l; i ++ ) {

this.array[ index1 + i ] = attribute.array[ index2 + i ];

}

return this;

},

set: function ( value, offset ) {

if ( offset === undefined ) offset = 0;

this.array.set( value, offset );

return this;

},

clone: function () {

return new this.constructor().copy( this );

}

};

export { InterleavedBuffer };