getting the exact coordinates!

[Scott Ayers]

I agree that it would be very handy to have scripting access the coordinates pallet.
It sure would make some things a lot easier.

I think the only way to currently do this kind of thing is to be a bit of a computer nerd and manually manipulate the matrix of the objects. Like this: //This script will create joints only on the selected points of the currently selected object
//Make sure the object selected is a polygon object. Not a primitive object!

var obj = doc->GetActiveObject(); //Gets the selected object
if(!obj)return; //Ends the script if nothing is selected
var pntsel = op->GetPointSelection();
var i;
for(i=0; i<obj->GetPointCount(); i++)
{
if(pntsel->IsSelected(i)) //Checks if any points are selected
{
var p = op->GetPoint(i); //Assign a variable to the points
CallCommand(1019362); //Create a Joint Object for each selected vertice
var n = doc->GetActiveObject();//Grab the Joints
n->SetPosition(vector(p.x,p.y,p.z)); //Place them on the selected verts
n->Message(MSG_UPDATE); //Update the changes
}
}
return 0; //End script

-ScottA

[abdelouahabb]

thank you scott
yes, really it will be very helpful to make such this operation, i've tried to convert a point to joint but sadly it takes the position of the whole object (the axis object) and not the point or edge or polygon object (their axis)
so in the SDK i've searched how to get only the axis coordinates but dident really understood what it said :surprised
thanks again for the script :D

[abdelouahabb]

hi
i've made this script as a file with icon, i've added a "add null object" in addition to the joint object.
thanks again scott :thumbsup:

[abdelouahabb]

oups!
seems that there is a small problem with the script; it only gives the coordinates of the "initialised" object, so if you move the object, the null and joint will be added to the previous initialised position :argh:
i've tried to do something but it seems not to work, it gives in console some errors like "too few parameters" or "lot of parameters" or "incompatible values " :surprised

[Scott Ayers]

Coffee has a bunch of ways to handle updating when an object is changed. And I'm afraid I'm still a bit lost on many of them.
I tried all of the various incarnations of the Message update function and none of them worked.

Hopefully someone with more experience will come along and have an answer for you.

-ScottA

[rui_mac]

Change the JOIN2NULL script to:

//This script will create joints only on the selected points of the currently selected object

var obj = doc->GetActiveObject(); //Gets the selected object
if(!obj)return; //Ends the script if nothing is selected
var mat=obj->GetMg();
var pntsel = op->GetPointSelection();
var i;
for(i=0; i<obj->GetPointCount(); i++)
{
if(pntsel->IsSelected(i)) //Checks if any points are selected
{
var p = mat->GetMulP(op->GetPoint(i)); //Assign a variable to the points
CallCommand(1019362); //Create a Joint Object for each selected vertice
var n = doc->GetActiveObject();//Grab the Joints
n->SetPosition(vector(p.x,p.y,p.z)); //Place them on the selected verts
n->Message(MSG_UPDATE); //Update the changes
}
}
return 0; //End script


And the POINT2NULL to:

//This script will create joints only on the selected points of the currently selected object

var obj = doc->GetActiveObject(); //Gets the selected object
if(!obj)return; //Ends the script if nothing is selected
var mat=obj->GetMg();
var pntsel = op->GetPointSelection();
var i;
for(i=0; i<obj->GetPointCount(); i++)
{
if(pntsel->IsSelected(i)) //Checks if any points are selected
{
var p = mat->GetMulP(op->GetPoint(i)); //Assign a variable to the points
CallCommand(5140); //Create a Null Object for each selected vertice
var n = doc->GetActiveObject();//Grab the Null
n->SetPosition(vector(p.x,p.y,p.z)); //Place it on the selected verts
n->Message(MSG_UPDATE); //Update the changes
}
}
return 0; //End script

Also, you may want to change the Menu State code of both scripts to:

ENABLE=False;
if(op)
{
if(op->GetType()!=5100 && op->GetType()!=5101) return;
var pointc=op->GetPointSelection();
if(pointc==nil) return;
var i;
for(i=0;i<op->GetPointCount();i++) if(pointc->IsSelected(i)) ENABLE=True;
}

This will make the menu item of the scripts will only get enabled if a polygonal or editable spline object with at least one point selected is active.

Rui Batista

[Scott Ayers]

Is there some way to update the vertice's positions rather than using a global matrix?
Refreshing and re-initializing things like vertice positions after they have been moved is something I'm still not very clear on how to handle.

-ScottA

[abdelouahabb]

really big thanks Rui for the script!! it will be really a useful one :bounce:
i've tried to make a cheat with n->SetPosition(vector(p.x,p.y,p.z)); i said maybe i can do something with n->GetPosition(vector(p.x,p.y,p.z)); but it dident work :D
thanks again scott :)
NB: the script can be done with a tip, using Mograph of course :rolleyes:
to do this, just select the point, then save the selection (set selection), then add a cloner, choose object as mode, then make the object selected as the cloner, then make the vertex mode and assign the selected points, now, when using null object, and after converting to editable convert the cloner to lot of objects (nulls) it may make some problems, the solution is just to replace th null with an instance, now it will work, and the good thing with mograph that it will also update the normal of the nulls added (i think this is what the global matrix do) :D
and...thanks again for the help :scream:

[rui_mac]

To be able to access deformed vertexes of an object, whe have to perform an internal "Current State to Object". To make that in COFFEE, any selected object will become deselected. It is impossible to create a clone of the object and operate just on that clone, in COFFEE. The best way to access deformed points is to use Xpresso or MoGraph.

Rui Batista

[Scott Ayers]

Interesting.
I wasn't thinking of it as deforming. But now that you say that, I guess that does make sense.
I can see why using a global matrix is so important for something like this.

It seems kind of a shame to me that there's no way to re-initialize things.
But as long as using a global matrix works I guess it doesn't matter too much.

Thanks rui,
-ScottA

[abdelouahabb]

!
understanding the cinema 4d logic! mmmmmmmmmmmmmmmm! :surprised
well, here is another script, maybe it will be helpful, it use the same thing as Split function, but instead of (copy and paste) here is "cut and paste + rename)...
var miaw = doc ->GetActiveObject();
doc->AddUndo(UNDO_OBJECT, miaw);// to have Undo
CallCommand(14046); //Split
CallCommand(12109); // Delete
var haw = miaw->GetNext();
haw = haw->SetName("MiawClone"); //Renames the resulted object to MiawClone :D

hope this helps. :p

[rui_mac]

Well, I assumed that you two wanted to be able to access points of polygonal objects once they are deformed. But if the polygonal object simply changes position, scale or rotation, the matrix method is all that is needed. In fact, those points are not really deformed. They are just being evaluated as being transformed from an axis system to another.

Rui Batista

[abdelouahabb]

hmmmm! interresting information!
now, as am a beginner for those things, i just say thanks, then, i'll understand them slowly :D

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