Animation Constraint Compensation for Object Dependency Management

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Solution Overview

Problem

Existing animation programs face issues with constraints between objects causing unintended effects, such as objects flying away during modifications, and lack clear indication of constraint presence or absence, making it difficult for animators to manage object dependencies.

Innovation Solution

A computer-implemented method that detects user modifications involving constrained and non-constrained objects, applies compensation adjustments based on a compensation policy, and adjusts the animation by changing the behavior or configuration of objects, while indicating limit violations and constraint changes in the graphical user interface.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If constraints are applied between objects in animation, then object relationships and interactions can be defined, but objects may fly away to unexpected places when modifications are made

Engineering Contradiction:
Improveobject relationship definitionVSAvoidobject position stability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The system dynamically adjusts constraint behavior based on the animation playback state. During playback, constraints are enforced to maintain object relationships. During modification mode, constraints are temporarily relaxed or adjusted to prevent objects from flying away, allowing safe editing while preserving the desired effect during playback.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system performs preliminary detection of user modifications before they take full effect. When a modification is detected, the system proactively applies compensation adjustments to prevent the harmful effect (object flying away) before it occurs, maintaining both the constraint relationship and position stability.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If constraints are constantly active throughout animation, then object dependencies are maintained, but animators cannot easily modify objects without causing unintended effects

Engineering Contradiction:
Improveconstraint consistencyVSAvoidanimation modification
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The constraint system dynamically switches between active and relaxed states based on the current operation. During normal playback, constraints remain active to maintain object dependencies. During modification operations, the system temporarily relaxes constraints or applies compensatory adjustments, allowing animators to edit objects freely while preserving constraint integrity during playback.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system continuously monitors for user modifications and provides real-time feedback through compensation adjustments. When a modification is detected, the system automatically applies corrections to maintain constraint relationships, creating a feedback loop that preserves both constraint consistency and editing flexibility without requiring manual intervention.

Inventive Principle:
Principle #23Feedback

3Adaptability or versatility

If multiple object versions are created to handle constraints, then constraint effects can be controlled, but the process becomes elaborate and complex

Engineering Contradiction:
Improveconstraint controlVSAvoidworkflow complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent extracts the constraint control logic from the object definitions themselves and implements it at the system level. Instead of creating multiple object versions to handle constraints, the system maintains a single object version and manages constraint states centrally, detecting modifications and applying compensations automatically. This eliminates the need for complex workarounds while preserving constraint control capabilities.

Inventive Principle:
Principle #2Taking out (Extraction)

4Ease of operation

If constraint presence is not indicated in the interface, then the interface remains simple, but animators lack knowledge of object dependencies

Engineering Contradiction:
Improveinterface simplicityVSAvoidobject dependency information
Core Design Contradiction:
Ease of operationVSLoss of information

Solution Approach 1:

The system uses visual indicators such as color changes, highlights, or graphical markers in the user interface to indicate when constraints are active between objects. These visual cues provide immediate feedback to animators about object dependencies without cluttering the interface, maintaining simplicity while preventing information loss about constraint relationships.

Inventive Principle:
Principle #32Color changes

Data Source

PatentUS9177408B2Modifying an animation having a constraint
Publication Date: 2015.11.03 LUCASFILM ENTERTAINMENT COMPANY LTD
  • US9177408B2 patent drawing
  • US9177408B2 patent drawing
  • US9177408B2 patent drawing

AI summary

A computer-implemented method for handling a modification of an animation having a constraint includes detecting a user modification of an animation that involves at least first and second objects, the first object constrained to the second object during a constrained period and non-constrained to the second object during a non-constrained period. The method includes, based on the user modification, selecting one of at least first and second compensation adjustments for the animation based on a compensation policy; and adjusting the animation according to the selected compensation adjustment.