Wrong edges on large STL files

[Artur-Sampaio]

Describe the bug When loading large STL files, enabling edge rendering causes edges to be completely wrong.

To Reproduce Steps to reproduce the behavior:

1. On line 616 of STLModel.js, replace

var mesh = new xeogl.Mesh(model, { id: model.id + "#" + entityCount++, geometry: geometry, material: material });

with

var mesh = new xeogl.Mesh(model, { id: model.id + "#" + entityCount++, geometry: geometry, material: material, edges: true, edgeThreshold: 20 });

2. Run the importing_stl_F1Concept example
3. See error

Expected behavior The object edges will be all over the place.

Screenshots

Desktop (please complete the following information):

• OS: Windows 10
• Browser: chrome and firefox, fully updated