/// <summary>
/// Create the main section of the road. EG the road
/// </summary>
/// <param name="rA">Start of road</param>
/// <param name="rB">End of the road</param>
/// <param name="texturePercent">The percentage of texture to use</param>
/// <returns>The flip flag</returns>
private bool AddMainRoadSection(RoadCrossSection rA, RoadCrossSection rB, List <int> triangles, float texturePercent)
{
bool flip = false;
// TODO: ADD subdivde here: Debug.Log("_subDivide = "+ _subDivide);
_roadObject.MeshUVs.Add(new Vector2(UVDATA.StraightStart, UVDATA.CurbRightLipInner));
_roadObject.MeshUVs.Add(new Vector2(UVDATA.StraightStart, UVDATA.CurbLeftLipInner));
_roadObject.MeshUVs.Add(new Vector2(UVDATA.StraightLength * texturePercent, UVDATA.CurbRightLipInner));
_roadObject.MeshUVs.Add(new Vector2(UVDATA.StraightLength * texturePercent, UVDATA.CurbLeftLipInner));
_roadObject.MeshVertices.Add(rA.Left);
_roadObject.MeshVertices.Add(rA.Right);
_roadObject.MeshVertices.Add(rB.Left);
_roadObject.MeshVertices.Add(rB.Right);
int v = _roadObject.MeshVertices.Count - 4;
// now we can work out if we need to flip the normals
Vector3 nA = MathsHelper.NormalTri(
_roadObject.MeshVertices[v],
_roadObject.MeshVertices[v + 1],
_roadObject.MeshVertices[v + 2]);
nA.Normalize();
Vector3 nB = MathsHelper.NormalTri(
_roadObject.MeshVertices[v + 3],
_roadObject.MeshVertices[v + 2],
_roadObject.MeshVertices[v + 1]);
nB.Normalize();
if (nA.y < 0 && nB.y < 0)
{
flip = true;
}
AddTriangles(flip, triangles);
return(flip);
}