//Build the mesh for the base
private static Mesh CreateBoardBaseMesh(int width, int height, float unitSize, List <int>[] allPorts)
{
//Create the mesh
Mesh mesh = new Mesh();
List <Vector3> vertices = new List <Vector3>();
List <int> triangles = new List <int>();
//Create base
var h = height * unitSize;
var w = width * unitSize;
var quad = new RectangleQuad(0, 0, w, h);
quad.Build(vertices, triangles);
#region Create Borders
float offset = 0.0f;
//horizontal
var topStrip = new Strip();
var bottomStrip = new Strip();
var topPorts = allPorts[1];
var bottomPorts = allPorts[3];
var edgei = new Edge(0, h, 0, h + BordersWidth);
topStrip.AddEdge(edgei);
edgei = new Edge(0, -BordersWidth, 0, 0);
bottomStrip.AddEdge(edgei);
for (var i = 0; i < width; i++)
{
//top
offset = (topPorts.Exists(u => u == i))? BordersOffset : 0.0f;
var edge0 = new Edge(unitSize * i + 0.1f, h, unitSize * i + 0.1f, h + BordersWidth + offset);
var edge1 = new Edge(unitSize * i + 1.9f, h, unitSize * i + 1.9f, h + BordersWidth + offset);
topStrip.AddEdge(edge0);
topStrip.AddEdge(edge1);
//bottom
offset = (bottomPorts.Exists(u => u == i))? BordersOffset : 0.0f;
edge0 = new Edge(unitSize * i + 0.1f, -BordersWidth - offset, unitSize * i + 0.1f, 0);
edge1 = new Edge(unitSize * i + 1.9f, -BordersWidth - offset, unitSize * i + 1.9f, 0);
bottomStrip.AddEdge(edge0);
bottomStrip.AddEdge(edge1);
}
edgei = new Edge(unitSize * width, h, unitSize * width, h + BordersWidth);
topStrip.AddEdge(edgei);
edgei = new Edge(unitSize * width, -BordersWidth, unitSize * width, 0);
bottomStrip.AddEdge(edgei);
var top = topStrip.Build(vertices, triangles);
var bottom = bottomStrip.Build(vertices, triangles);
//vertical
var leftStrip = new Strip();
var rightStrip = new Strip();
var leftPorts = allPorts[0];
var rightPorts = allPorts[2];
edgei = new Edge(0, 0, -BordersWidth, 0);
leftStrip.AddEdge(edgei);
edgei = new Edge(w + BordersWidth, 0, w, 0);
rightStrip.AddEdge(edgei);
for (var i = 0; i < height; i++)
{
//left
offset = (leftPorts.Exists(u => u == i)) ? BordersOffset : 0.0f;
var edge0 = new Edge(0, unitSize * i + 0.1f, -BordersWidth - offset, unitSize * i + 0.1f);
var edge1 = new Edge(0, unitSize * i + 1.9f, -BordersWidth - offset, unitSize * i + 1.9f);
leftStrip.AddEdge(edge0);
leftStrip.AddEdge(edge1);
//right
offset = (rightPorts.Exists(u => u == i)) ? BordersOffset : 0.0f;
edge0 = new Edge(w + BordersWidth + offset, unitSize * i + 0.1f, w, unitSize * i + 0.1f);
edge1 = new Edge(w + BordersWidth + offset, unitSize * i + 1.9f, w, unitSize * i + 1.9f);
rightStrip.AddEdge(edge0);
rightStrip.AddEdge(edge1);
}
edgei = new Edge(0, unitSize * height, -BordersWidth, unitSize * height);
leftStrip.AddEdge(edgei);
edgei = new Edge(w + BordersWidth, unitSize * height, w, unitSize * height);
rightStrip.AddEdge(edgei);
var left = leftStrip.Build(vertices, triangles);
var right = rightStrip.Build(vertices, triangles);
#endregion
#region Create Corners
//left-top corner
var v1 = left[1] - 1;
var v2 = left[1];
var v3 = top[0] + 1;
triangles.Add(v1);
triangles.Add(v2);
triangles.Add(v3);
//top-right corner
v1 = top[1] - 1;
v2 = top[1];
v3 = right[1] - 1;
triangles.Add(v1);
triangles.Add(v2);
triangles.Add(v3);
//right-bottom corner
v1 = right[0];
v2 = bottom[1] - 1;
v3 = right[0] + 1;
triangles.Add(v1);
triangles.Add(v2);
triangles.Add(v3);
//bottom-left corner
v1 = bottom[0];
v2 = left[0] + 1;
v3 = bottom[0] + 1;
triangles.Add(v1);
triangles.Add(v2);
triangles.Add(v3);
#endregion
#region Extrude
//find outer edges
var outerEdges = new List <Vector2Int>();
//left
for (var i = left[1]; i >= left[0]; i--)
{
if (i % 2 == 0)
{
continue;
}
if (i - 2 < left[0])
{
break;
}
outerEdges.Add(new Vector2Int(i, i - 2));
}
//top
for (var i = top[1]; i >= top[0]; i--)
{
if (i % 2 == 0)
{
continue;
}
if (i - 2 < top[0])
{
break;
}
outerEdges.Add(new Vector2Int(i, i - 2));
}
//right
for (var i = right[0]; i <= right[1]; i++)
{
if (i % 2 != 0)
{
continue;
}
if (i + 2 > right[1])
{
break;
}
outerEdges.Add(new Vector2Int(i, i + 2));
}
//bottom
for (var i = bottom[0]; i <= bottom[1]; i++)
{
if (i % 2 != 0)
{
continue;
}
if (i + 2 > bottom[1])
{
break;
}
outerEdges.Add(new Vector2Int(i, i + 2));
}
//corners
outerEdges.Add(new Vector2Int(top[0] + 1, left[1]));
outerEdges.Add(new Vector2Int(right[1] - 1, top[1]));
outerEdges.Add(new Vector2Int(bottom[1] - 1, right[0]));
outerEdges.Add(new Vector2Int(left[0] + 1, bottom[0]));
//extrude
for (var i = 0; i < outerEdges.Count; i++)
{
var n = vertices.Count;
var edge = outerEdges[i];
var a0 = edge.x;
var a1 = edge.y;
//duplicate edge
var v = vertices[edge.x];
v.y -= BoardThickness;
vertices.Add(v);
var a2 = n;
v = vertices[edge.y];
v.y -= BoardThickness;
vertices.Add(v);
var a3 = n + 1;
triangles.Add(a0);
triangles.Add(a1);
triangles.Add(a2);
triangles.Add(a2);
triangles.Add(a1);
triangles.Add(a3);
}
#endregion
//set mesh properties
mesh.vertices = vertices.ToArray();
mesh.triangles = triangles.ToArray();
mesh.RecalculateNormals();
return(mesh);
}
