How to freeze transform in autodesk 2019

the current time is changed: in this case, animation curves no longer have the right value which depends on the current time.

The two main cases where dirty propagation happened in the Pull Evaluation model were when: This mechanism is known as the Dirty Propagation in which the invalid data status propagates to all downstream dependencies. This evaluation model relies on the ability to mark node data as invalid and therefore requiring new evaluation. The result then propagates back up in the graph, as the data is being вЂњpulledвЂќ. These inputs can also be dirty, in which case the evaluation request will then be forwarded to those dirty sources until it reaches the point where the data can be evaluated. It does so by pulling on the inputs required to compute the requested data. However, if the data is dirty, the node must first recompute it. If the data is already evaluated, the consumer receives it directly. In this model, the data consumer (for instance the renderer) queries data from a given node. The dotted arrows inside the nodes represent an implicit computation dependency between an output attribute (on the right of the node) and the input attributes (on the left) being read to compute the result stored in the output.Д«efore Parallel Maya, the DG was used to evaluate the scene using a Pull Model or Pull Evaluation. Generally speaking, these connections represent data flow through the nodes as they evaluate. The DG connections are at the plug level, that is, two nodes can be connected to one another multiple ways through different plugs. Nodes can have multiple attributes, and instances of these attributes on a specific node are called plugs. The basic description of the scene is the Dependency Graph (DG), consisting of DG nodes and connections. It maintains (and updates while the scene is edited) a few data structures (described below) used for efficient evaluation. For now, letвЂ™s focus on understanding key Maya evaluation concepts.ДЄt the heart of MayaвЂ™s new evaluation architecture is an Evaluation Manager (EM), responsible for handling the parallel-friendly representation of your scene.

As you can imagine, the amount of parallelism depends on how your scene has been constructed. Similarly, if your scene has a single complex character, it may be possible to evaluate rig sub-sections simultaneously. For example, if your scene contains different characters that are unconstrained to one another, Maya can evaluate each character at the same time. Unlike previous versions of Maya, which were limited to node-level parallelism, Maya now includes a mechanism for scene-level analysis and parallelization. Starting from Maya 2016, Maya accelerates existing scenes by taking better advantage of your hardware. If you would like an overview of related topics prior to reading this document, check out Supercharged Animation Performance in Maya 2016.

This guide will be of interest to riggers, TDs, and plug-in authors wishing to take advantage of speed enhancements in Maya.

It covers key concepts, shares best practices/usage tips, and lists known limitations that we aim to address in subsequent versions of Maya. This guide describes the Maya features for accelerating playback and manipulation of animated scenes.

How to freeze transform in autodesk 2019