class_docstr: Add to Meshdata class the capability to export good data for gloo 
docstr: Build vertices for a colored mesh.
      V  is the vertices
      I1 is the indices for a filled mesh (use with GL_TRIANGLES)
      I2 is the indices for an outline mesh (use with GL_LINES)
docstr_tok: ["Build","vertices","for","a","colored","mesh",".","V","is","the","vertices","I1","is","the","indices","for","a","filled","mesh","(","use","with","GL_TRIANGLES",")","I2","is","the","indices","for","an","outline","mesh","(","use","with","GL_LINES",")"]
code: def get_glTriangles(self):
      """
      Build vertices for a colored mesh.
          V  is the vertices
          I1 is the indices for a filled mesh (use with GL_TRIANGLES)
          I2 is the indices for an outline mesh (use with GL_LINES)
      """
      vtype = [
          ("a_position", np.float32, 3),
          ("a_normal", np.float32, 3),
          ("a_color", np.float32, 4),
      ]
      vertices = self.get_vertices()
      normals = self.get_vertex_normals()
      faces = np.uint32(self.get_faces())
  
      edges = np.uint32(self.get_edges().reshape((-1)))
      colors = self.get_vertex_colors()
  
      nbrVerts = vertices.shape[0]
      V = np.zeros(nbrVerts, dtype=vtype)
      V[:]["a_position"] = vertices
      V[:]["a_normal"] = normals
      V[:]["a_color"] = colors
  
      return V, faces.reshape((-1)), edges.reshape((-1))
  
imports: from PyQt5 import QtCore, QtWidgets
  import sys
  import numpy
  from vispy import app, gloo
  from vispy.util.transforms import perspective, translate, rotate
  from vispy.geometry import meshdata
  from vispy.geometry import generation
label_desc: Use image node_id 2 for calling the MyMeshData obj's underlying member method code with example usage: obj.get_glTriangles() and returns: V,  faces,  edges