Posts Topics Forums Images
Search videos from message boards Videos Search messages from microblogs Microblogs Search messages from imdb.com Imdb Search messages from yuku.com Yuku Search messages from lefora.com (free forums) Lefora
Login | Sign Up
Loading... 

Thread: Maya API: How to smooth a polyObject thats in a dataHandle of a deformerNode?
Started 3 months, 2 weeks ago by nsimagine
I am trying to write a little deformer, Being fairly new to API I am still having trouble understanding the basic fundamentals, I have a sourceMesh that I am connecting to my deformer node that I would like to use as a driver. I would like to create a smoothed Mesh out of that sourceMesh, but the way I have it now, its crashing MAYA. I seem to be able to "query" and "print" the ...
Site: CGSociety - Society of Digital Artists  CGSociety - Society of Digital Artists - site profile
Forum: Maya MEL  Maya MEL - forum profile
Total authors: 3 authors
Total thread posts: 17 posts
Thread activity: no new posts during last week
Domain info for: cgsociety.org

Other posts in this thread:

Buexe replied 3 months, 2 weeks ago
have you tried MFnMeshData? sorry, this is so bold, cause I copied it from the docs.
Size: 129 bytes
Customize:  Customize "<b>Reply 1</b>: Maya API: How to smooth a polyObject thats in a dataHandle of a deformerNode? :: Maya MEL :: CGSociety - Society of Digital Artists"

nsimagine replied 3 months, 2 weeks ago
Hmmm, but for MFnMeshData I don`t have generateSmoothMesh, do I? I am not quite sure how I would use that to generate a smooth version of the sourceMesh, then.
Size: 186 bytes
Customize:  Customize "<b>Reply 2</b>: Maya API: How to smooth a polyObject thats in a dataHandle of a deformerNode? :: Maya MEL :: CGSociety - Society of Digital Artists"

Buexe replied 3 months, 2 weeks ago
No, that s true but it give you a waz to actually access your data, as right now I think that you try to attach MFnMesh to your MObject from the MDataHandle and that might be the cause of failure. I think that the MObject you are getting from the datahandle is a data MObject and not the node itself. Maybe try to print out what kind of MObject you are dealing with something like this: cout<<...
Size: 500 bytes
Customize:  Customize "<b>Reply 3</b>: Maya API: How to smooth a polyObject thats in a dataHandle of a deformerNode? :: Maya MEL :: CGSociety - Society of Digital Artists"

Keilun replied 3 months, 1 week ago
Your usage of generateSmoothMesh is incorrect. As Buexe was pointing out, the MObject you receive from the dataHandle is of type MFnMeshData. MFnMesh can accept and operate on this type, but you have to treat it as such rather than as a shape. MFnData types are the data packets that flow through the DG. They do not have a name or path because they are not DAG entities (shape/transforms)....
Size: 2,501 bytes
Customize:  Customize "<b>Reply 4</b>: Maya API: How to smooth a polyObject thats in a dataHandle of a deformerNode? :: Maya MEL :: CGSociety - Society of Digital Artists"

nsimagine replied 3 months, 1 week ago
Thanks for the replies! I tried using your code, Keilun, but when I am trying to compile the plug, I am getting an error: 116: error: expected primary-expression before ‘.’ token line 116 is this: MObject outData = MFnMeshData.create(); I am not sure what I am doing wrong! :-( Nico.
Size: 380 bytes
Customize:  Customize "<b>Reply 5</b>: Maya API: How to smooth a polyObject thats in a dataHandle of a deformerNode? :: Maya MEL :: CGSociety - Society of Digital Artists"

Keilun replied 3 months, 1 week ago
My code is just pseudocode. There's bound to be errors. It was meant to guide you. Create an MFnMeshData object, then use create: Code: MFnMeshData meshDataFn; MObject outData = meshDataFn.create();
Size: 524 bytes
Customize:  Customize "<b>Reply 6</b>: Maya API: How to smooth a polyObject thats in a dataHandle of a deformerNode? :: Maya MEL :: CGSociety - Society of Digital Artists"

nsimagine replied 3 months, 1 week ago
Thanks for the fast reply, Keilun! I am still in the process of understanding how API works and how to use it. I have done MEL for a very long time, but API is a completely different beast! :-) So this is what I have now for the deform part: MStatus n_simpleDeform::deform( MDataBlock& data, MItGeometry & iterator, const MMatrix & matrix, unsigned int multiIndex) { MStatus status = ...
Size: 1,817 bytes
Customize:  Customize "<b>Reply 7</b>: Maya API: How to smooth a polyObject thats in a dataHandle of a deformerNode? :: Maya MEL :: CGSociety - Society of Digital Artists"

Keilun replied 3 months, 1 week ago
Hm. I guess contrary to the documentation, it doesn't work on anything except shapes. Would it be possible to run a smooth operation after the deform, outside of your node? Eg. inMesh --> yourDeformer --> polySmoothFace --> outMesh So basically have your command setup the above connection structure?
Size: 368 bytes
Customize:  Customize "<b>Reply 8</b>: Maya API: How to smooth a polyObject thats in a dataHandle of a deformerNode? :: Maya MEL :: CGSociety - Society of Digital Artists"

nsimagine replied 3 months, 1 week ago
Unfortunately not, What I am ultimately after is a deformer that has a lowRes polyMesh as an input (srcMesh) which drives / deforms a highRes (poly)-Mesh. My first approach was to convert the lowRes poly to a subD and then iterate over deformed Mesh points and find the closest Point and Normal on the sub. With that I could then calc the offset / distance. My only problem was that the ...
Size: 1,299 bytes
Customize:  Customize "<b>Reply 9</b>: Maya API: How to smooth a polyObject thats in a dataHandle of a deformerNode? :: Maya MEL :: CGSociety - Society of Digital Artists"

Keilun replied 3 months, 1 week ago
I don't see how doing it inside the node is any different. From what I'm reading, it sounds like you want it setup like this: lowResMesh --> polySmoothFace --> deform --> hiResMesh Note that with this setup, the smoothed mesh isn't floating around all the time and it will only be calculated when the lowResMesh changes. Am I misunderstanding? Doing this inside your deform node just ...
Size: 604 bytes
Customize:  Customize "<b>Reply 10</b>: Maya API: How to smooth a polyObject thats in a dataHandle of a deformerNode? :: Maya MEL :: CGSociety - Society of Digital Artists"

 

Top contributing authors

Name
Posts
nsimagine
8
user's latest post:
CGTalk - Maya API: How to smooth...
Published (2009-12-08 20:36:00)
Now I know what you mean, with just having the smooth-node but not the actual result in the scene! :-) I played a little with it, but haven`t had a chance to test the workflow with my code yet, my I guess it could work! :-) The only thing I found curious was, I tried to recreate the polySmooth as you would get it with the poly smooth command, (I first create a lowRes sphere and smoothed it) Then I created another loRes sphere and a smooth...
Keilun
7
user's latest post:
CGTalk - Maya API: How to smooth...
Published (2009-12-10 16:48:00)
Did you check all the values of the polySmooth node that you manually created to make sure they're the same? The polySmooth command does set some values on the smooth node after creation/connection.
Buexe
2
user's latest post:
Maya API: How to smooth a...
Published (2009-11-29 01:41:00)
have you tried MFnMeshData? sorry, this is so bold, cause I copied it from the docs.

Related threads on "CGSociety - Society of Digital Artists":

API:A derive problem in maya API???  CGSociety - Society of Digital Artists - site profile Maya MEL - forum profile API:A derive problem in maya API???
API:A derive problem in maya API???
Maya API/API in python.....Help  CGSociety - Society of Digital Artists - site profile Maya MEL - forum profile Maya API/API in python.....Help
Maya API/API in python.....Help
Mac OS X Makefile for Maya API Plugins?  CGSociety - Society of Digital Artists - site profile Graphics Programming - forum profile Mac OS X Makefile for Maya API Plugins?
Mac OS X Makefile for Maya API Plugins?
Maya Motion Capture API Guide  CGSociety - Society of Digital Artists - site profile Graphics Programming - forum profile Maya Motion Capture API Guide
Maya Motion Capture API Guide
Maya API: check if file exists  CGSociety - Society of Digital Artists - site profile Alias/Autodesk Maya - forum profile Maya API: check if file exists
Maya API: check if file exists
Maya API Python wrapper  CGSociety - Society of Digital Artists - site profile Graphics Programming - forum profile Maya API Python wrapper
Maya API Python wrapper
Button creation in API  CGSociety - Society of Digital Artists - site profile Maya MEL - forum profile Button creation in API
Button creation in API

Related threads on other sites:

What does API GL mean?API stands for American Petroleum...  PassionFord.com - site profile Technical help Q & A - forum profile What does API GL mean?API stands for American Petroleum Industry and GL stands for GearLubricant, see below for their definitions:API GL-1 Straight mineral oilAPI GL-2 Mild EP for worm gearsAPI GL-3 Mild EP for spur and spiral bevel gears in axles and tra
What does API GL mean?API stands for American Petroleum Industry and GL stands for GearLubricant, see below for their definitions:API GL-1 Straight mineral oilAPI GL-2 Mild EP for worm gearsAPI GL-3 Mild EP for spur and spiral bevel gears in axles and tra
Thread profile page for "Maya API: How to smooth a polyObject thats in a dataHandle of a deformerNode?" on http://forums.cgsociety.org. This report page is a snippet summary view from a single thread "Maya API: How to smooth a polyObject thats in a dataHandle of a deformerNode?", located on the Message Board at http://forums.cgsociety.org. This thread profile page shows the thread statistics for: Total Authors, Total Thread Posts, and Thread Activity
 1   2   Next »