0022106: EDF 2464 SMESH : Split quadrangles in 4 triangles

0022106: EDF 2464 SMESH : Split quadrangles in 4 triangles

Fix position of a central node of a distorted bi-quadratic triangle

+   * \brief Return UV for the central node of a biquadratic triangle
+   */
+  static gp_XY GetCenterUV(const gp_XY& uv1,
+                           const gp_XY& uv2,
+                           const gp_XY& uv3,
+                           const gp_XY& uv12,
+                           const gp_XY& uv23,
+                           const gp_XY& uv31,
+                           bool *       isBadTria=0);