getVertexPosition method

Vector3 getVertexPosition(int index, Vector3 target)

Returns the local-space position of the vertex at the given index, taking into account the current animation state of both morph targets and skinning.

index - The vertex index. target - The target object that is used to store the method's result. return Vector3 The vertex position in local space.

Implementation

Vector3 getVertexPosition(int index, Vector3 target ) {
		final geometry = this.geometry;
		final position = geometry?.attributes['position'];
		final morphPosition = geometry?.morphAttributes['position'];
		final morphTargetsRelative = geometry?.morphTargetsRelative;

		target.fromBuffer( position, index );

		final morphInfluences = this.morphTargetInfluences;

		if ( morphPosition != null && morphInfluences.isNotEmpty) {
			_morphA.setValues( 0, 0, 0 );

			for (int i = 0, il = morphPosition.length; i < il; i ++ ) {
				final influence = morphInfluences[ i ];
				final morphAttribute = morphPosition[ i ];

				if ( influence == 0 ) continue;

				_tempA.fromBuffer( morphAttribute, index );

				if ( morphTargetsRelative != null) {
					_morphA.addScaled( _tempA, influence );
				} else {
					_morphA.addScaled( _tempA.sub( target ), influence );
				}
			}

			target.add( _morphA );
		}

		return target;
	}