/// <summary>
/// This function is called when Grasshopper needs to convert this
/// instance of TriStateType into some other type Q.
/// </summary>
/// <typeparam name="Q"></typeparam>
/// <param name="target"></param>
/// <returns></returns>
public override bool CastTo <Q>(ref Q target)
{
//First, see if Q is similar to the Integer primitive.
if (typeof(Q).IsAssignableFrom(typeof(VoxelGrid3D)))
{
object ptr = Value;
target = (Q)ptr;
return(true);
}
if (typeof(Q).IsAssignableFrom(typeof(GH_Mesh)))
{
var m = VoxelGridMeshHelper.VoxelGridToMesh(Value);
// don't add fake meshes..
// VoxelGridMeshHelper.addFakeShadow(ref m, new Vector3d(-0.495633, 0.142501, 0.856762), 1.0, Color.White, Color.Black);
var ghm = new GH_Mesh(m);
target = (Q)(object)ghm;
return(true);
}
//First, see if Q is similar to the Integer primitive.
if (typeof(Q).IsAssignableFrom(typeof(string)))
{
target = (Q)(object)ToString();
return(true);
}
//We could choose to also handle casts to Boolean, GH_Boolean,
//Double and GH_Number, but this is left as an exercise for the reader.
return(false);
}
/// <summary>
/// This is the method that actually does the work.
/// </summary>
/// <param name="da">The DA object is used to retrieve from inputs and store in outputs.</param>
protected override void SolveInstance(IGH_DataAccess da)
{
/*
* todo: select mesh box or simple box
*/
bool fakeShadow = false;
var vg = default(VoxelGrid3D);
da.GetData(0, ref vg);
da.GetData(1, ref fakeShadow);
var meshes = new List <Mesh>();
if (vg == null || !vg.IsValid)
{
AddRuntimeMessage(GH_RuntimeMessageLevel.Error, "The (input) voxelgrid was invalid");
return;
}
var m = VoxelGridMeshHelper.VoxelGridToMesh(vg);
try
{
meshes = VoxelGridMeshHelper.VoxelGridToMeshByPlanes(vg);
}
catch (Exception e)
{
throw new Exception($"Creating multiple meshes failed: {e.ToString()}");
}
if (fakeShadow)
{
VoxelGridMeshHelper.addFakeShadow(ref m, new Vector3d(-0.495633, 0.142501, 0.856762), 1.0, Color.White, Color.Black);
}
da.SetData(0, m);
if (meshes.Count == 6)
{
for (var i = 1; i <= meshes.Count; i++)
{
var mesh = meshes[i - 1];
if (fakeShadow)
{
VoxelGridMeshHelper.addFakeShadow(ref mesh, new Vector3d(-0.495633, 0.142501, 0.856762), 1.0,
Color.White, Color.Black);
}
da.SetData(i, mesh);
}
}
else
{
AddRuntimeMessage(GH_RuntimeMessageLevel.Error, "Getting world planes failed");
}
// get top faces
// get bottom faces
}
/// <summary>
/// render the meshes
/// </summary>
private void GenerateBoxMeshes()
{
if (RenderMesh.Count != 0)
{
return;
}
foreach (var vg in RenderGrid)
{
var m = VoxelGridMeshHelper.VoxelGridToMesh(vg);
VoxelGridMeshHelper.addFakeShadow(ref m, new Vector3d(-0.495633, 0.142501, 0.856762), 1.0, Color.White, Color.Black);
RenderMesh.Add(m);
}
}
private void EnsureMeshCache()
{
if (_hasMeshCache)
{
return;
}
foreach (var ghGoo in m_data.AllData(true))
{
var vg = (GH_VoxelGrid)ghGoo;
var m = VoxelGridMeshHelper.VoxelGridToMesh(vg.Value);
_bboxCache.Union(vg.Value.BBox.BoundingBox);
VoxelGridMeshHelper.addFakeShadow(ref m, new Vector3d(-0.495633, 0.142501, 0.856762), 1.0, Color.White, Color.Black);
_meshCache.Add(m);
}
_hasMeshCache = true;
}
