Hide DescElements R18

Helper

On 29/11/2016 at 13:23, xxxxxxxx wrote:

HeyScott

thank you! Now it works and I´m able to do alot of funny stuff.

def GetDDescription(self, node, description, flags) :  
  data = node.GetDataInstance()  
  
  if not description.LoadDescription(node.GetType()) : return False  
  
  singleID = description.GetSingleDescID()  
  groupID = c4d.DescID(c4d.DescLevel(c4d.GT_GROUP1, c4d.DTYPE_GROUP, node.GetType()))  
  paramID = c4d.DescID(c4d.DescLevel(c4d.GT_REAL))  
  
  if singleID is None or paramID.IsPartOf(singleID)[0]:  
      bc = c4d.GetCustomDataTypeDefault(c4d.DTYPE_REAL)  
      if data.GetBool(c4d.GT_HIDE01) == True: bc.SetBool(c4d.DESC_HIDE, True)  
      elif data.GetBool(c4d.GT_HIDE01) == False:  
          bc.SetString(c4d.DESC_NAME, "Real")  
          bc.SetLong(c4d.DESC_UNIT, c4d.DESC_UNIT_METER)  
          bc.SetBool(c4d.DESC_HIDE, False)  
      if not description.SetParameter(paramID, bc, groupID) : return False  
  
  return (True, flags | c4d.DESCFLAGS_DESC_LOADED)

But one of many questions and one note.

Question:
If I use

if c4d.GT_HIDE01: ...

instead of

if data.GetBool(c4d.GT_HIDE01) == True: ...

nothing happens. Why?

Note:
If I print paramID.IsPartOf(singleID) cinema crashs.

Thanks Andreas and Scott and greetings
rownn

Helper

On 29/11/2016 at 14:00, xxxxxxxx wrote:

The code "if c4d.GT_HIDE01:" asks the question: if this integer.
But C4D doesn't know what that means without some context.
So you need to tell C4D to look in the node's container for that integer ( node.GetDataInstance() ).
That's what the "data" variable is used for in my example.

It might have been clearer if I named it "bc" or maybe something like "nodeBC".
I tend to use "data" by habit.

-ScottA

Helper

On 30/11/2016 at 05:38, xxxxxxxx wrote:

Damn! I used c4d.GT_HIDE01 instead of node[c4d.GT_HIDE01]. That´s embarrassing!!

Helper

On 30/11/2016 at 10:22, xxxxxxxx wrote:

Hi guys,

glad you seem to have solved the issue already.
I just want to add, that there's a slight difference between creating a new parameter description and changing an existing one in GetDDescription().
In the posted snippets it looks like you are creating a new description parameter. At least you are always overwriting the existing description parameter. It's a bit hard to tell, without seeing the resource files. In Scott's example this is definitely the case, if I'm not mistaken.
You can do so, but in such a case, where you have defined a description parameter in a resource file and just want to hide it, the approach would be slightly different. Instead of creating a new BaseContainer (and then having to care to set up everything the way you want, while you already did so before in the resource file) with GetCustomDataTypeDefault(), you'd rather use Description.GetParameterI() to get the existing BaseContainer of the parameter description and simply modify the needed value (e.g. in this case DESC_HIDE).

Helper

On 30/11/2016 at 13:35, xxxxxxxx wrote:

Hey Andreas,

thx for that point. It would be nice to hide an element without the need to reset everything else, but Description.GetParameterI( id , ar ) crashs cinema, too.

def GetDDescription(self, node, description, flags) :  
  
      data = node.GetDataInstance()  
  
      if not description.LoadDescription(node.GetType()) : return False  
  
      singleID = description.GetSingleDescID()  
      groupID = c4d.DescID(c4d.DescLevel(c4d.GT_GROUP1, c4d.DTYPE_GROUP, node.GetType()))  
      paramID = c4d.DescID(c4d.DescLevel(c4d.GT_REAL))  
  
      if singleID is None or paramID.IsPartOf(singleID)[0]:  
          bc = description.GetParameterI(paramID, []) #c4d.GetCustomDataTypeDefault(c4d.DTYPE_REAL)  
          if node[c4d.GT_HIDE01]: bc[c4d.DESC_HIDE] = True  
          elif not node[c4d.GT_HIDE01]: bc[c4d.DESC_HIDE] = False  
          if not description.SetParameter(paramID, bc, groupID) : return False  
  
      return (True, flags | c4d.DESCFLAGS_DESC_LOADED)

Helper

On 30/11/2016 at 15:07, xxxxxxxx wrote:

Try using None instead of "[]" in your GetParameterI() function.

I added the GetParameterI() version to my example.

-ScottA

Helper

On 01/12/2016 at 02:34, xxxxxxxx wrote:

Hey,

Ive already tried using None, but with None cinema freezes.

Helper

On 01/12/2016 at 07:25, xxxxxxxx wrote:

Since bc is assigned to GetParameterI() in your code. It will probably crash when it's used in the SetParameter() function.
Try it without using SetParameter() at the end. It doesn't seem to be needed when using the GetParameterI() function to change a description.

Like this:

bc = description.GetParameterI(paramID, None)      
if data.GetBool(1111) == True: bc.SetBool(c4d.DESC_HIDE, True)  
if data.GetBool(1111) == False: bc.SetBool(c4d.DESC_HIDE, False)

-ScottA

Helper

On 01/12/2016 at 09:04, xxxxxxxx wrote:

Yep, Scott is right. Sorry, I forgot to tell yesterday.
But still, it shouldn't crash C4D. We are investigating.

Helper

On 02/12/2016 at 04:40, xxxxxxxx wrote:

Thank you guys,

I though I had tried to uncomment that line, because it makes totally sense. Hmm...
Finally the code looks clean and works. I like such a finish.

def GetDDescription(self, node, description, flags) :  
  
  if not description.LoadDescription(node.GetType()) : return False  
  
  singleID = description.GetSingleDescID()  
  paramID = c4d.DescID(c4d.DescLevel(c4d.GT_REAL))  
  
  if singleID is None or paramID.IsPartOf(singleID)[0]:  
      bc = description.GetParameterI(paramID, None)   
      if node[c4d.GT_HIDE01]: bc[c4d.DESC_HIDE] = True  
      else: bc[c4d.DESC_HIDE] = False  
  
  return (True, flags | c4d.DESCFLAGS_DESC_LOADED)

thx again
rownn

PS: Thanks 1M times all the guys who implemented that great possibility.