private MeshData MakeWireMesh(Vec3f pos1, Vec3f pos2, long netId)
{
float t = 0.015f;//thickness
Vec3f dPos = pos2 - pos1;
float dist = pos2.Distance(pos1);
int nSec = (int)Math.Floor(dist * 2);//number of section
nSec = nSec > 5 ? nSec : 5;
MeshData mesh = new MeshData(4, 6);
mesh.SetMode(EnumDrawMode.Triangles);
MeshData mesh_top = new MeshData(4, 6);
mesh_top.SetMode(EnumDrawMode.Triangles);
MeshData mesh_bot = new MeshData(4, 6);
mesh_bot.SetMode(EnumDrawMode.Triangles);
MeshData mesh_side = new MeshData(4, 6);
mesh_side.SetMode(EnumDrawMode.Triangles);
MeshData mesh_side2 = new MeshData(4, 6);
mesh_side2.SetMode(EnumDrawMode.Triangles);
//out of plane translation vector:
Vec3f b = new Vec3f(-dPos.Z, 0, dPos.X).Normalize();
if (dPos.Z == 0 && dPos.X == 0)
{
b = new Vec3f(1, 0, 0);
}
int color = debugColors[netId % debugColors.Length];
Vec3f pos;
mesh_top.Flags.Fill(0);
mesh_bot.Flags.Fill(0);
mesh_side.Flags.Fill(0);
mesh_side2.Flags.Fill(0);
//Add vertices
for (int j = 0; j <= nSec; j++)
{
float x = dPos.X / nSec * j;
float y = dPos.Y / nSec * j;
float z = dPos.Z / nSec * j;
float l = (float)Math.Sqrt(x * x + y * y + z * z);
float dy = Catenary(l / dist, 1, 0.5f);
pos = new Vec3f(x, y + dy, z);
float du = dist / 2 / t / nSec;
mesh_top.AddVertex(pos1.X + pos.X - b.X * t, pos1.Y + pos.Y + t, pos1.Z + pos.Z - b.Z * t, j * du, 0, color);
mesh_top.AddVertex(pos1.X + pos.X + b.X * t, pos1.Y + pos.Y + t, pos1.Z + pos.Z + b.Z * t, j * du, 1, color);
mesh_bot.AddVertex(pos1.X + pos.X - b.X * t, pos1.Y + pos.Y - t, pos1.Z + pos.Z - b.Z * t, j * du, 0, color);
mesh_bot.AddVertex(pos1.X + pos.X + b.X * t, pos1.Y + pos.Y - t, pos1.Z + pos.Z + b.Z * t, j * du, 1, color);
mesh_side.AddVertex(pos1.X + pos.X - b.X * t, pos1.Y + pos.Y + t, pos1.Z + pos.Z - b.Z * t, j * du, 1, color);
mesh_side.AddVertex(pos1.X + pos.X - b.X * t, pos1.Y + pos.Y - t, pos1.Z + pos.Z - b.Z * t, j * du, 0, color);
mesh_side2.AddVertex(pos1.X + pos.X + b.X * t, pos1.Y + pos.Y + t, pos1.Z + pos.Z + b.Z * t, j * du, 1, color);
mesh_side2.AddVertex(pos1.X + pos.X + b.X * t, pos1.Y + pos.Y - t, pos1.Z + pos.Z + b.Z * t, j * du, 0, color);
mesh_top.Flags[2 * j] = VertexFlags.NormalToPackedInt(new Vec3f(0, 1, 0)) << 15;
mesh_top.Flags[2 * j + 1] = VertexFlags.NormalToPackedInt(new Vec3f(0, 1, 0)) << 15;
mesh_bot.Flags[2 * j] = VertexFlags.NormalToPackedInt(new Vec3f(0, -1, 0)) << 15;
mesh_bot.Flags[2 * j + 1] = VertexFlags.NormalToPackedInt(new Vec3f(0, -1, 0)) << 15;
mesh_side.Flags[2 * j] = VertexFlags.NormalToPackedInt(-b.X, -b.Y, -b.Z) << 15;
mesh_side.Flags[2 * j + 1] = VertexFlags.NormalToPackedInt(-b.X, -b.Y, -b.Z) << 15;
mesh_side2.Flags[2 * j] = VertexFlags.NormalToPackedInt(b) << 15;
mesh_side2.Flags[2 * j + 1] = VertexFlags.NormalToPackedInt(b) << 15;
int flag = VertexFlags.LeavesWindWaveBitMask;
if (j != 0 && j < nSec)
{
//mesh_top.Flags[2 * j] = flag;
//mesh_top.Flags[2 * j+1] = flag;
//mesh_bot.Flags[2 * j] = flag;
//mesh_bot.Flags[2 * j + 1] = flag;
//mesh_side.Flags[2 * j] = flag;
//mesh_side.Flags[2 * j + 1] = flag;
//mesh_side2.Flags[2 * j] = flag;
//mesh_side2.Flags[2 * j + 1] = flag;
}
}
//add indices
for (int j = 0; j < nSec; j++)
{
//upper stripe
int offset = 2 * j;
mesh_top.AddIndex(offset);
mesh_top.AddIndex(offset + 3);
mesh_top.AddIndex(offset + 2);
mesh_top.AddIndex(offset);
mesh_top.AddIndex(offset + 1);
mesh_top.AddIndex(offset + 3);
//lower stripe
mesh_bot.AddIndex(offset);
mesh_bot.AddIndex(offset + 3);
mesh_bot.AddIndex(offset + 1);
mesh_bot.AddIndex(offset);
mesh_bot.AddIndex(offset + 2);
mesh_bot.AddIndex(offset + 3);
//sides
mesh_side.AddIndex(offset);
mesh_side.AddIndex(offset + 3);
mesh_side.AddIndex(offset + 1);
mesh_side.AddIndex(offset);
mesh_side.AddIndex(offset + 2);
mesh_side.AddIndex(offset + 3);
mesh_side2.AddIndex(offset);
mesh_side2.AddIndex(offset + 3);
mesh_side2.AddIndex(offset + 2);
mesh_side2.AddIndex(offset);
mesh_side2.AddIndex(offset + 1);
mesh_side2.AddIndex(offset + 3);
}
mesh.AddMeshData(mesh_top);
mesh.AddMeshData(mesh_bot);
mesh.AddMeshData(mesh_side);
mesh.AddMeshData(mesh_side2);
mesh.Rgba.Fill((byte)255);
return(mesh);
}
