Recent changes to Scene_hierarchy

Scene_hierarchy modified by Javier Taibo

Javier Taibo — Wed, 21 May 2014 09:47:31 -0000

--- v5
+++ v6
@@ -13,6 +13,16 @@
 In Maya, Emitters are a special kind of Transform nodes. They are exported as a regular osg::Transform with the emitter under it.

 All features of Maya Transforms are correctly exported for static (not animated) Transforms. 
+
+This can be checked exporting the file 
+    
+    test_trans.ma
+
+in the 
+    
+    tests
+
+directory. 

 ## Animated Transforms

Scene_hierarchy modified by Javier Taibo

Javier Taibo — Wed, 21 May 2014 09:47:31 -0000

--- v4
+++ v5
@@ -31,3 +31,15 @@
 Maya Transforms will not be correctly exported if they apply a shear or move the scale or rotate pivot point.

 [[img src=MayaTransform.jpg]] 
+
+To see an example, export the file 
+    
+    test_trans_anim.ma
+
+in the 
+    
+    tests
+
+directory and see the results (you can use the Preview buttons on the shelf). 
+
+This behaviour could be solved creating a more complex hierarchy to move the pivot point to the origin and then restoring it after rotating and scaling. Maybe this will be implemented in later versions of Maya2OSG.

Scene_hierarchy modified by Javier Taibo

Javier Taibo — Wed, 21 May 2014 09:47:31 -0000

--- v3
+++ v4
@@ -10,8 +10,24 @@

 nodes. 

+In Maya, Emitters are a special kind of Transform nodes. They are exported as a regular osg::Transform with the emitter under it. 
+
+All features of Maya Transforms are correctly exported for static (not animated) Transforms. 
+
+## Animated Transforms
+
 Animations connected to transform nodes (whether AnimCurves or MotionPaths) are exported to OSG AnimationPathCallbacks. 

-In Maya, Emitters are a special kind of Transform nodes. They are exported as a regular osg::Transform with the emitter under it. 
+However, some features are not supported, because the class 
+    
+    osg::AnimationPathCallback

-**TO-DO: Check support of every transform attribute in Maya.**
+is based on 
+    
+    osg::AnimationPath::ControlPoint
+
+objects that store only position, rotation and scale about the origin. 
+
+Maya Transforms will not be correctly exported if they apply a shear or move the scale or rotate pivot point. 
+
+[[img src=MayaTransform.jpg]]

Scene_hierarchy modified by Javier Taibo

Javier Taibo — Wed, 21 May 2014 09:47:31 -0000

--- v2
+++ v3
@@ -14,4 +14,4 @@

 In Maya, Emitters are a special kind of Transform nodes. They are exported as a regular osg::Transform with the emitter under it. 

-**** TO-DO: Check support of every transform attribute in Maya. ****
+**TO-DO: Check support of every transform attribute in Maya.**

Scene_hierarchy modified by Javier Taibo

Javier Taibo — Wed, 21 May 2014 09:47:31 -0000

--- v1
+++ v2
@@ -14,5 +14,4 @@

 In Maya, Emitters are a special kind of Transform nodes. They are exported as a regular osg::Transform with the emitter under it. 

-  
-TO-DO: Check support of every transform attribute in Maya. 
+**** TO-DO: Check support of every transform attribute in Maya. ****

Scene_hierarchy modified by Javier Taibo

Javier Taibo — Wed, 21 May 2014 09:47:31 -0000

Maya2OSG conserves the full scene hierarchy of Maya DAG when exporting to OSG. Node names are also kept intact.

Maya transform nodes are converted to

osg::MatrixTransform

nodes. The rest of Maya groups are converted to

osg::Group

nodes.

Animations connected to transform nodes (whether AnimCurves or MotionPaths) are exported to OSG AnimationPathCallbacks.

In Maya, Emitters are a special kind of Transform nodes. They are exported as a regular osg::Transform with the emitter under it.

TO-DO: Check support of every transform attribute in Maya.