SimplyMaya Forums

Welcome to the forum, feel free to ask questions here.


SM Forums / Lounges / Maya Basics & Newbie Lounge / problem with blend shape

Maya Basics & Newbie Lounge Please post in this section ONLY if your question doesn't fit in anywhere else on the forum, or if you're not sure which section it's relevant to. We also have Free streaming trial available.

Join the conversation. Reply to post
 
Thread Tools
01-11-2005, 11:17 PM   #1
conmeo
Registered User
 
Join Date: Sep 2005
Posts: 3
problem with blend shape
the base object is a surface
the target object is a mesh that i import from an OBJ file
when i change the blendshape channel key ( to any value other than 0), the object just disappears

and one more thing blend shape also doesn't change the texture and the material of the object, then how?

pls, help me, i'm doing this for my school project
  Reply with quote
02-11-2005, 01:01 AM   #2
mtmckinley
The Maya Mountain
 
mtmckinley's Avatar
 
Join Date: Aug 2002
Location: Seattle, WA
Posts: 8,245
I might not be understanding correctly, but it doesn't sound like you're using the blend shape right... it only works if you are blending between 2 identical (on a mesh level) objects. For example, a duplicate of the original object that has had its individual points moved around. The original can then blend its vertices positions to the copy's.

As for changing textures and materials, you'd probably need to use a layered shader and key the transparancy between them.

Hope that made sense.
__________________
-Mike
www.mtmckinley.net
The Maya Toolbelt
  Reply with quote
02-11-2005, 01:22 AM   #3
conmeo
Registered User
 
Join Date: Sep 2005
Posts: 3
Quote:
Originally posted by mtmckinley
I might not be understanding correctly, but it doesn't sound like you're using the blend shape right... it only works if you are blending between 2 identical (on a mesh level) objects. For example, a duplicate of the original object that has had its individual points moved around. The original can then blend its vertices positions to the copy's.

As for changing textures and materials, you'd probably need to use a layered shader and key the transparancy between them.

Hope that made sense.
thnx for reply, but then how to blend 2 totally different objects? is it possible in Maya?
  Reply with quote
02-11-2005, 01:53 AM   #4
mtmckinley
The Maya Mountain
 
mtmckinley's Avatar
 
Join Date: Aug 2002
Location: Seattle, WA
Posts: 8,245
You'd most likely need to fake it, using blend shapes or another kind of deformer (or combo of deformers) to get object A to move toward the shape of Object B, but then blend transparancy between the two objects.

Using particle effects and the like to help mask the switch can help the overall effect as well, depending on what exactly you're trying to do.

If you really want to try to make one shape blend into the other, you'd have the best results doing a blend shape, but you'd have to duplicate object A and then remodel it into object B without adding/subtracting geometry.
__________________
-Mike
www.mtmckinley.net
The Maya Toolbelt
  Reply with quote
02-11-2005, 01:54 AM   #5
conmeo
Registered User
 
Join Date: Sep 2005
Posts: 3
let me make it clearer,
i want to blend the left one to the right one, can anyone help me?
Attached Thumbnails
Click image for larger version

Name:	terrain.jpg
Views:	190
Size:	23.1 KB
ID:	24652  
  Reply with quote
02-11-2005, 02:43 PM   #6
mtmckinley
The Maya Mountain
 
mtmckinley's Avatar
 
Join Date: Aug 2002
Location: Seattle, WA
Posts: 8,245
Make your flat plane have a LOT of geometry, duplicate it, and then go over the copy with the sculpt tools to get it to look like you want. Then you can make a blend shape between the two.
__________________
-Mike
www.mtmckinley.net
The Maya Toolbelt
  Reply with quote
03-11-2005, 10:39 PM   #7
Phopojijo
Registered User
 
Join Date: Aug 2004
Posts: 408
Just a question -- are displacement maps keyframable?

If so he can create a Normal Map between the two objects, use

http://66.70.170.53/Ryan/heightmap/heightmap.html

that tool to turn it into a displacement map, then animate from off to on (or from 0 displacement to whatever displacement he wishes)

It won't use Blendshape, but should get the job done in that situation.

(while at the same time keyframing between the two shaders)
  Reply with quote
04-11-2005, 01:01 AM   #8
mtmckinley
The Maya Mountain
 
mtmckinley's Avatar
 
Join Date: Aug 2002
Location: Seattle, WA
Posts: 8,245
I believe it is possible to key such a thing, but I believe it would take a lot longer to render.
__________________
-Mike
www.mtmckinley.net
The Maya Toolbelt
  Reply with quote
04-11-2005, 06:46 AM   #9
Phopojijo
Registered User
 
Join Date: Aug 2004
Posts: 408
Quote:
Originally posted by mtmckinley
I believe it is possible to key such a thing, but I believe it would take a lot longer to render.
Don't mind me -- I was trained like a labrat to "think outside the box" on every situation possible. Obviously your method's quicker than generating a normal map (converting it to a displacement thereafter) and setting up a keyed shader animation -- then as stated your rendering slowdown.

Last edited by Phopojijo; 04-11-2005 at 06:53 AM.
  Reply with quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
blend shape not keyframing littlepenguin84 Maya Basics & Newbie Lounge 0 04-03-2010 07:13 PM
Blend shape copy help Dr.Polygon Maya Basics & Newbie Lounge 2 10-02-2010 01:43 PM
Blend Shape Sliders & Set Driven Key Lt Jim Animation 1 17-04-2006 07:59 PM
blend shape problem bala2007 Animation 7 07-10-2005 08:57 PM
Blend Shape Body Parts gazzamataz Animation 2 30-10-2003 10:36 AM