function [ils] = getHTIndexedLineSet()
% [ils] = getHTIndexedLineSet()
% Utility function to obtain an indexed line set structure to be used with
% the function hapticTool. hapticViewer internally uses hapticToolMex which 
% in turn uses the h3d scene graph api 
% 
% Author: Johann Strasser
% Date: 070402 (YYMMDD)
% 
% Revision #1

ils.name = 'indexedLineSet1';
ils.parentTransform = 'world';
ils.vertices = [];
ils.lineIndices = [];
ils.interactionMode = 'move';
ils.vertexColours = [];
ils.lineColours = [];
ils.lineColoursPerVertex = 'false';
ils.vertexStiffness = 0.6;
ils.lineStiffness = 0.3;