Create Mograph Selection

Helper

On 22/06/2015 at 07:38, xxxxxxxx wrote:

Is it possible? From this thread 2-3 years ago it was not : https://developers.maxon.net/forum/topic/6292/6685_mograph-selections

The problem present in the thread was that in CPP the mograph selection is found via a call to the BaseTag.Message() with MSG_GET_MODATASELECTION. But this does not exist in Python SDK.

Although that thread was more focused on accessing pre-existing mograph selections. I must create the selections. I am working on a cloner object. I have a lot of python code and I am aware that mograph selections can be made programmatically in XPresso. Is the solution to learn how to create the XPresso dynamically from Python?

What is the solution?? I've been writing my code in Python and I'm discouraged to migrate to CPP.. hmph

If I should migrate to CPP, is the migration straightforward?? How does something like shader_effector[c4d.ID_MG_BASEEFFECTOR_COLOR_ALPHA] = 0 translate to CPP?

Helper

On 23/06/2015 at 05:14, xxxxxxxx wrote:

I have created a solution. I've been coding C4D Python for 1.5 days.

# MoSelection from Python
# authored by bazz : http://www.bazz1.com  
import c4d
  
width = 3
height = 3
  
doc.StartUndo()
  
  
cloner = c4d.BaseObject(1018544)
# create cloner
doc.InsertObject(cloner, parent = None, pred = None, checknames = True)
# create Cube
cube = c4d.BaseObject(c4d.Ocube)
doc.InsertObject(cube, parent = cloner, pred = None, checknames = True)
  
# Create xpresso on cloner
xtag = c4d.BaseTag(c4d.Texpresso)
cloner.InsertTag(xtag)
nodemaster = xtag.GetNodeMaster()
  
# change Cloner -> Object -> Mode to "Grid Array"
cloner[c4d.ID_MG_MOTIONGENERATOR_MODE] = 3
  
# change Cloner -> Object -> Count(3) to (width, height, 1)
cloner[c4d.MG_GRID_RESOLUTION] = c4d.Vector(3,3,1)
  
# change Cloner -> Object -> Size(3) to (width * cubeX, height * cubeY, nonimportant value)
cloner[c4d.MG_GRID_SIZE] = c4d.Vector(width * cube[c4d.PRIM_CUBE_LEN].x, height * cube[c4d.PRIM_CUBE_LEN].y, 1)
  
  
## completely unnecessary code because C4D is messed up
## Need this code to access the "Object" Port on the actual Mograph Selection Tag in Xpresso
## this is because there is a bug in C4D and you cannot Add the Object port
bc = c4d.GetCustomDataTypeDefault(c4d.DTYPE_BASELISTLINK) 
bc[c4d.DESC_NAME] = "obj" 
  
  
## Make mograph selection tag
ms_tag = c4d.BaseTag(1021338) # mograph selection tag
## Note, clone grid array y axis in inverted tile 0 is bottom-left
## Name the mograph selection tag by the color it represents : ie (255,255,255)
ms_tag.SetName("Mograph Selection Tag")
linkDataType = ms_tag.AddUserData(bc)
ms_tag.__setitem__((c4d.ID_USERDATA,1), ms_tag)
## Add tag to cloner
cloner.InsertTag(ms_tag)
# Add the MoSelection tag to XPresso
### XPRESSO
xnode_mograph_selection_tag = nodemaster.CreateNode(nodemaster.GetRoot(),c4d.ID_OPERATOR_OBJECT,None)
xnode_mograph_selection_tag[c4d.GV_OBJECT_OBJECT_ID] = ms_tag
# Create Object output port
xnode_mograph_selection_tag_port_out_object = xnode_mograph_selection_tag.AddPort(c4d.GV_PORT_OUTPUT, \nc4d.DescID(c4d.DescLevel(c4d.ID_USERDATA, c4d.DTYPE_SUBCONTAINER, 0), c4d.DescLevel(1)), message = True)
  
# Add mograph selection node to Xpresso
xnode_mograph_selection = nodemaster.CreateNode(nodemaster.GetRoot(),1021344,None,550,0)	# Xpresso mograph selection ID
# xnode_mograph_selection_port_in_selection_tag = xnode_mograph_selection.AddPort(c4d.GV_PORT_INPUT, 1000) # would have added Selection tag, but it already exists at index 0
xnode_mograph_selection_port_in_selection_tag = xnode_mograph_selection.GetInPort(0) #should probably be getting the ports by name
xnode_mograph_selection_port_in_index = xnode_mograph_selection.GetInPort(1)
xnode_mograph_selection_port_in_select = xnode_mograph_selection.AddPort(c4d.GV_PORT_INPUT, 1001) # add Select index 2
# Connect~~
xnode_mograph_selection_tag_port_out_object.Connect(xnode_mograph_selection_port_in_selection_tag)
  
  
# Create Iteration node
xnode_iteration = nodemaster.CreateNode(nodemaster.GetRoot(),c4d.ID_OPERATOR_ITERATE, None, 0, 100)
xnode_iteration[c4d.GV_ITERATE_INPUT_LOWER] = 0
xnode_iteration[c4d.GV_ITERATE_INPUT_UPPER] = (width*height) - 1 #inclusive
  
xnode_iteration_OUT_iteration = xnode_iteration.GetOutPort(0)
# Connect Iteration Iteration -> Mograph Selection - Index
xnode_iteration_OUT_iteration.Connect(xnode_mograph_selection_port_in_index)
  
# Create Python Node
xnode_python = nodemaster.CreateNode(nodemaster.GetRoot(),1022471,insert=None, x=300, y=200) #Create python node
# alter Python Text
xnode_python[c4d.GV_PYTHON_CODE] = 'import c4d\n\n\ndef main() :\n\n	global Select\n\n	Select = 0\n\n	if Index % 2:\n\n		Select = 1\n'
# Python Ports configuration
xnode_python_Index_IN = xnode_python.GetInPort(0)
xnode_python_Index_IN.SetName("Index")
xnode_python_Select_OUT = xnode_python.GetOutPort(0)
xnode_python_Select_OUT.SetName("Select")
  
# Connect Iteration Iteration -> Python - Index
xnode_iteration_OUT_iteration.Connect(xnode_python_Index_IN)
# Connect Python - Select -> Mograph Selection - Select
xnode_python_Select_OUT.Connect(xnode_mograph_selection_port_in_select)
  
  
doc.EndUndo()
c4d.EventAdd()
  
  
  
'''
maybe useful
cloner = doc.SearchObject("Cloner")
    tags = cloner.GetTags()
    for tag in tags:
        if tag.GetType() == 1021338:
            print tag
            
    pass  #put in your code here
def main() :
    cloner = doc.SearchObject("SMW_Fire_Flower.png")
    tags = cloner.GetTags()
    for tag in tags:
        if tag.GetType() == c4d.Texpresso:
            bc = tag.GetNodeMaster().GetRoot()
            print bc.GetDown().GetNext()
    pass  #put in your code here
    pass  #put in your code here
  
import c4d
#Welcome to the world of Python
  
  
def main() :
    cloner = doc.SearchObject("SMW_Fire_Flower.png")
    tags = cloner.GetTags()
    for tag in tags:
        if tag.GetType() == c4d.Texpresso:
            bc = tag.GetNodeMaster().GetRoot()
            mosel = bc.GetDown().GetNext()
            derp = mosel.GetOperatorContainer()
            derp.SetIndexData(1,1)
            print derp.GetIndexData(1)
            mosel.SetOperatorContainer(derp)
            
    pass  #put in your code here
  
    '''

Helper

On 29/06/2015 at 02:56, xxxxxxxx wrote:

Hello,

the Python API is an incomplete mirror of the C++ API so there are the same and more elements. But C++ is a very different programming language than Python and requires experience in handling classes, managing memory and using the IDEs.

Best wishes,
Sebastian