The IsDirty property of the PolygonMesh class indicates whether there have been changes to the mesh that require it to be rebuilt. This is a boolean property that returns true if the mesh has been modified and needs to be updated, and false otherwise.
Use the IsDirty property to check if the mesh has been altered and requires a rebuild. This can be useful in scenarios where you want to optimize performance by only rebuilding the mesh when necessary.
// Example of checking if a PolygonMesh needs rebuilding
PolygonMesh mesh = new PolygonMesh();
// Perform some operations on the mesh
// ...
// Check if the mesh is dirty
if (mesh.IsDirty)
{
// Rebuild the mesh
mesh.Rebuild();
}