private void GenerateRoad()
{
if (mMesh == null)
{
mMesh = new Mesh();
mMesh.name = "RoadSegment";
m_MeshFilter.sharedMesh = mMesh;
}
mMesh.Clear();
//vertices
List <Vector3> allVertsAlongRoad = new List <Vector3> ();
List <Vector3> allNormals = new List <Vector3> ();
for (int ring = 0; ring < m_VerticalSliceCount; ring++)
{
float t = ring / (m_VerticalSliceCount - 1f);
OrientedPoint op = GetBezierOrientation(t);
for (int i = 0; i < m_Shape2D.vertices.Length; i++)
{
allVertsAlongRoad.Add(op.LocalToWorld(m_Shape2D.vertices[i].points));
allNormals.Add(op.LocalToWorldVec(m_Shape2D.vertices[i].normals));
//allNormals.Add (m_Shape2D.vertices[i].normals);//without rotation
}
}
//Trianlges
List <int> allTriangles = new List <int> ();
for (int ring = 0; ring < m_VerticalSliceCount - 1; ring++)
{
int rootIndex = ring * m_Shape2D.GetVertexCount();
int rootIndexForward = (ring + 1) * m_Shape2D.GetVertexCount();
for (int line = 0; line < m_Shape2D.GetLineCount(); line += 2)
{
int lineA = m_Shape2D.lineIndices[line];
int lineB = m_Shape2D.lineIndices[line + 1];
int currentA = rootIndex + lineA;
int currentB = rootIndex + lineB;
int nextA = rootIndexForward + lineA;
int nextB = rootIndexForward + lineB;
allTriangles.Add(currentA);
allTriangles.Add(nextA);
allTriangles.Add(nextB);
allTriangles.Add(nextB);
allTriangles.Add(currentB);
allTriangles.Add(currentA);
}
}
mMesh.SetVertices(allVertsAlongRoad);
mMesh.SetTriangles(allTriangles, 0);
mMesh.SetNormals(allNormals);
}
void GenerateMesh()
{
mesh.Clear();
// Vertices
List <Vector3> verts = new List <Vector3>();
List <Vector3> normals = new List <Vector3>();
for (int ring = 0; ring < edgeRingCount; ring++)
{
float t = ring / (edgeRingCount - 1f);
OrientedPoint op = GetBezierOP(t);
for (int i = 0; i < shape2D.VertexCount; i++)
{
verts.Add(op.LocalToWorldPos(shape2D.vertices[i].point));
normals.Add(op.LocalToWorldVec(shape2D.vertices[i].normal));
}
}
// Triangles
List <int> triIndices = new List <int>();
for (int ring = 0; ring < edgeRingCount - 1; ring++)
{
int rootIndex = ring * shape2D.VertexCount;
int rootIndexNext = (ring + 1) * shape2D.VertexCount;
for (int line = 0; line < shape2D.LineCount; line += 2)
{
int lineIndexA = shape2D.lineIndices[line];
int lineIndexB = shape2D.lineIndices[line + 1];
int currentA = rootIndex + lineIndexA;
int currentB = rootIndex + lineIndexB;
int nextA = rootIndexNext + lineIndexA;
int nextB = rootIndexNext + lineIndexB;
triIndices.Add(currentA);
triIndices.Add(nextA);
triIndices.Add(nextB);
triIndices.Add(currentA);
triIndices.Add(nextB);
triIndices.Add(currentB);
}
}
mesh.SetVertices(verts);
mesh.SetNormals(normals);
mesh.SetTriangles(triIndices, 0);
}
/// <summary>
/// Smesh goes brrr
/// </summary>
/// <param name="uv"></param>
private void GenerateMesh(Vector2 uv)
{
// On vide nos listes
Mesh.Clear();
vertices.Clear();
triangles.Clear();
normals.Clear();
uv0.Clear();
uv1.Clear();
CubicBezierCurve bezier = GetBezierRepresentation(Space.Self);
float curveArcLegth = bezier.GetArcLength();
float tiling = GetTextureAspectRatio();
int edgeCount = Mathf.Max(2, Mathf.RoundToInt(curveArcLegth * RoadChain.trianglesPerSegment)); // 2 triangles minimum sinon kaboom
// Generation vertices normales & map texture
for (int i = 0; i < edgeCount; ++i)
{
float t = i / (edgeCount - 1f);
OrientedPoint op = bezier.GetOrientedPoint(t);
float uv0V = t * tiling;
float uv1U = Mathf.Lerp(uv.x, uv.y, t);
for (int j = 0; j < RoadChain.mesh2D.VertexCount; ++j)
{
vertices.Add(op.LocalToWorldPos(RoadChain.mesh2D.vertices[j].point));
normals.Add(op.LocalToWorldVec(RoadChain.mesh2D.vertices[j].normal));
uv0.Add(new Vector2(RoadChain.mesh2D.vertices[j].u, uv0V));
uv1.Add(new Vector2(uv1U, 0));
}
}
// Generation des triangles
for (int i = 0; i < edgeCount - 1; ++i)
{
int ifv = i * RoadChain.mesh2D.VertexCount;
int ipofv = (i + 1) * RoadChain.mesh2D.VertexCount;
for (int j = 0; j < RoadChain.mesh2D.LineCount; j += 2)
{
int t = RoadChain.mesh2D.triangles[j];
int tpo = RoadChain.mesh2D.triangles[j + 1];
triangles.Add(ifv + t);
triangles.Add(ipofv + t);
triangles.Add(ipofv + tpo);
triangles.Add(ifv + t);
triangles.Add(ipofv + tpo);
triangles.Add(ifv + tpo);
}
}
Mesh.SetVertices(vertices);
Mesh.SetTriangles(triangles, 0);
Mesh.SetNormals(normals);
Mesh.SetUVs(0, uv0);
Mesh.SetUVs(1, uv1);
Mesh.RecalculateBounds();
MeshCollider collider = GetComponent <MeshCollider>();
collider.sharedMesh = Mesh;
}