Hi,in another post I found a way to achieve my goal of converting the coordinate position to camera space and then scaling it to a small size so that he appears first.

this is new code:

def Draw(self,op, drawpass, bd, bh):
    
    
    if not op[c4d.S_MOTIONTRAIL_GTWO_DRAWENABLE]:
        return c4d.DRAWRESULT_OK
    #bd.SetMatrix_Matrix(None, c4d.Matrix())
    pmg = ~bd.GetMg()
    bd.SetMatrix_Camera()

    all_pos = self.parameters['all_pos']
    color_lis = self.parameters['color_lis']
    point_size = op[c4d.S_MOTIONTRAIL_GTWO_POINTSIZE]
    bd.SetPointSize(point_size)
    for per_pos,color in zip(all_pos,color_lis):
        bd.SetPen(color)
        cnt = len(per_pos)
        temp_lis = []
        for i in xrange(cnt-1):
            c = (pmg * per_pos[i]).GetNormalized() * 20
            f = (pmg * per_pos[i+1]).GetNormalized() * 20
            bd.DrawLine(c,f,c4d.NOCLIP_D)
            temp_lis.append(c)
        temp_lis.append(f)
        bd.DrawPoints(temp_lis)
    

    return c4d.DRAWRESULT_OK

why * 20 will work, * 1or 2 not work (c = (pmg * per_pos[i]).GetNormalized() * 20)?

@r_gigante @zipit
The detailed explanation is shown below
“up interpolattion”


Try use "spline trail"

I read some papers, but always been very slow, just only expanded know, such as Frenet–Serret formulas etc. But I did not directly find a better way to replace my current method, and I have been looking for it.

Computation of Rotation Minimizing Frames This seems to be a good paper, I will read it carefully.

@m_adam Thank you for your team's reply.
I will share my exploration in this post in the future.

try use GetDirty(DIRTYFLAGS_CACHE)，compare last dirty and current dirty

Hi,
you can read this thread

Hi,
i read python sdk BaseContainer.FindIndex() return a bool but actually return a dict

This is the sample code, I tried to dynamically create the element inside the group to achieve, the picture is not drawn completely as expected：

import c4d
import os
import sys
from c4d import gui,bitmaps,plugins,utils,modules,storage


PLUGIN_ID = 10000000 #only for test



GROUP_SCROLL = 1100
USEEAREA_GROUP = 1102
USERAREA = 1101

ADD_BUTTON = 1200

class PreViewArea(gui.GeUserArea):
    bmp = None


    def DrawMsg(self,x1, y1, x2, y2, msg):
        self.OffScreenOn()
        self.SetClippingRegion(x1, y1, x2, y2)
        BG_colorDict = self.GetColorRGB(c4d.COLOR_BG)
        BG_color = c4d.Vector(BG_colorDict['r'], BG_colorDict['g'], BG_colorDict['b']) / 255.0
        self.DrawSetPen(BG_color)
        self.DrawRectangle(x1, y1, x2, y2)

        if self.bmp:
            width = self.bmp.GetBw()
            height = self.bmp.GetBh()
            self.DrawBitmap(self.bmp, 0, 0, width, height, 0, 0, width, height, c4d.BMP_NORMAL)

def dynamic_Group(dialog,ua):
    dialog.LayoutFlushGroup(USEEAREA_GROUP)

    if ua.bmp:
        width = ua.bmp.GetBw()
        height = ua.bmp.GetBh()
    else:
        width,height = 0,0
    dialog.AddUserArea(USERAREA, c4d.BFH_SCALE | c4d.BFV_SCALE,width,height)
    dialog.AttachUserArea(ua, USERAREA)
    dialog.LayoutChanged(USEEAREA_GROUP)

class S_Lib_Dialog(gui.GeDialog):
    ua = PreViewArea()


    def CreateLayout(self):
        self.SetTitle("test")
        self.ScrollGroupBegin(PLUGIN_ID, c4d.BFH_SCALEFIT | c4d.BFV_SCALEFIT, c4d.SCROLLGROUP_HORIZ | c4d.SCROLLGROUP_VERT)
        self.GroupBegin(USEEAREA_GROUP,c4d.BFH_LEFT | c4d.BFV_TOP,1,1)
        self.GroupBorder(c4d.BORDER_ACTIVE_1)
        self.AddUserArea(USERAREA, c4d.BFH_SCALEFIT | c4d.BFV_SCALEFIT)
        self.AttachUserArea(self.ua, USERAREA)
        self.GroupEnd()

        self.GroupEnd()
        self.AddButton(ADD_BUTTON,c4d.BFH_SCALEFIT,150,30,"Load image")


        return True

    def Command(self, id, msg):
        if id == ADD_BUTTON:
            path = storage.LoadDialog(type=c4d.FILESELECTTYPE_IMAGES)
            if path:
                bmp = bitmaps.BaseBitmap()
                result,ismovie = bmp.InitWith(path)
                if result == c4d.IMAGERESULT_OK:
                    self.ua.bmp = bmp
                    dynamic_Group(self, self.ua)
                    self.ua.Redraw()
                else:
                    print("Load image Fail")
            else:
                print("Not select image")



            return True

        return True






class S_Lib(plugins.CommandData):

    dialog = None

    def Execute(self,doc):
        # create the dialog
        if self.dialog is None:
            self.dialog = S_Lib_Dialog()

        return self.dialog.Open(dlgtype=c4d.DLG_TYPE_ASYNC, pluginid=PLUGIN_ID, defaultw=800, defaulth=400)

    def RestoreLayout(self, sec_ref):
        # manage nonmodal dialog
        if self.dialog is None:
            self.dialog = S_Lib_Dialog()

        return self.dialog.Restore(pluginid=PLUGIN_ID, secret=sec_ref)


# Execute main()
if __name__=='__main__':
    path, fn = os.path.split(__file__)
    plugins.RegisterCommandPlugin(id=PLUGIN_ID,
                                  str="test",
                                  info=0,
                                  help="",
                                  dat=S_Lib(),
                                  icon=None)

@ferdinand Thanks for your help!

Hi,
I want to refresh the dialog when switching documents. I tried to use the following code, but it seems that this cannot be achieved .
When I switch documents, it seems that I only receive type==c4d.MSG_COMMANDINFORMATION

code:

    def Message(self, type, data):
        print("msg type:{}".format(type))
        print("data:{}".format(data))
        if type == c4d.MSG_DOCUMENTINFO:
            if data['type'] == c4d.MSG_DOCUMENTINFO_TYPE_SETACTIVE:
                print("doc Change!")
        return True

Thanks for any help!

@manuel Thanks for your help!

Hi,
i want to Copy all info of one Object to other Object.Use source.CopyTo(aim), But object aim is dead after CopyTo().
My purpose is to copy all the information of an object except the basic information to another object, so after CopyTo(), I want to use the backup information to restore the basic information of aim, but the object is dead and an exception will be thrown

this is code:

import c4d
from c4d import gui

def main():
    source,aim = doc.GetActiveObjects(2)
    doc.StartUndo()
    #backup basic properties
    info_list = []
    description = aim.GetDescription(c4d.DESCFLAGS_DESC_NONE)
    did_list = [c4d.DescID(c4d.DescLevel(110050, 1, 110050)),
                c4d.DescID(c4d.DescLevel(1041666, 1, 110050))]
    for bc, paramid, groupid in description:
        if groupid in did_list:
            if aim[paramid]:
                info_list.append((paramid, aim[paramid]))
    doc.AddUndo(c4d.UNDOTYPE_CHANGE,aim)
    source.CopyTo(aim, c4d.COPYFLAGS_NO_BRANCHES|c4d.COPYFLAGS_NO_MATERIALPREVIEW|c4d.COPYFLAGS_NO_BITS)
    #restore  basic properties
    for info in info_list:
        aim[info[0]] = info[1]
    
    doc.EndUndo()
    c4d.EventAdd()
# Execute main()
if __name__=='__main__':
    main()

Thanks for any help!

@ferdinand Thanks you for your help！

@ferdinand Thanks

pic 2 : Close Save, the regluar image Save must be not save

pic 3:Open Save, the regluar image Save save or not save depends on itself

@ferdinand Thanks,MyRenderSetting[c4d.RDATA_SAVEIMAGE] = True I use this method in my code, it can achieve the purpose of not save image, but I am wondering if I can access the state of the Save element in pic1, so that when I activate my renderSetting, I do not click Go in and check the status of [c4d.RDATA_SAVEIMAGE], you can also directly know whether it is a saved state or an unsaved state during the current rendersetting

@m_adam Thanks for your help，great work!

@m_adam Thanks!