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Synthesizing structured CAD models with equality saturation and inverse transformations

Authors:

Chandrakana Nandi,

James R. Wilcox,

Zachary TatlockAuthors Info & Claims

PLDI 2020: Proceedings of the 41st ACM SIGPLAN Conference on Programming Language Design and Implementation

Pages 31 - 44

https://doi.org/10.1145/3385412.3386012

Published: 11 June 2020 Publication History

Abstract

Recent program synthesis techniques help users customize CAD models(e.g., for 3D printing) by decompiling low-level triangle meshes to Constructive Solid Geometry (CSG) expressions. Without loops or functions, editing CSG can require many coordinated changes, and existing mesh decompilers use heuristics that can obfuscate high-level structure.

This paper proposes a second decompilation stage to robustly "shrink" unstructured CSG expressions into more editable programs with map and fold operators. We present Szalinski, a tool that uses Equality Saturation with semantics-preserving CAD rewrites to efficiently search for smaller equivalent programs. Szalinski relies on inverse transformations, a novel way for solvers to speculatively add equivalences to an E-graph. We qualitatively evaluate Szalinski in case studies, show how it composes with an existing mesh decompiler, and demonstrate that Szalinski can shrink large models in seconds.

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Cited By

Zakhour GWeisenburger PCesario JSalvaneschi G(2025)Dis/Equality GraphsProceedings of the ACM on Programming Languages10.1145/37049139:POPL(2282-2305)Online publication date: 9-Jan-2025
https://dl.acm.org/doi/10.1145/3704913
Lubin JFerguson JYe KYim JChasins S(2024)Equivalence by Canonicalization for Synthesis-Backed RefactoringProceedings of the ACM on Programming Languages10.1145/36564538:PLDI(1879-1904)Online publication date: 20-Jun-2024
https://dl.acm.org/doi/10.1145/3656453
Kœhler TGoens ABhat SGrosser TTrinder PSteuwer M(2024)Guided Equality SaturationProceedings of the ACM on Programming Languages10.1145/36329008:POPL(1727-1758)Online publication date: 5-Jan-2024
https://dl.acm.org/doi/10.1145/3632900
Show More Cited By

Index Terms

Synthesizing structured CAD models with equality saturation and inverse transformations

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cover image ACM Conferences

PLDI 2020: Proceedings of the 41st ACM SIGPLAN Conference on Programming Language Design and Implementation

June 2020

1174 pages

ISBN:9781450376136

DOI:10.1145/3385412

General Chair:
Alastair F. Donaldson
Imperial College London, UK
,
Program Chair:
Emina Torlak
University of Washington, USA

Copyright © 2020 ACM.

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Published: 11 June 2020

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PLDI '20: 41st ACM SIGPLAN International Conference on Programming Language Design and Implementation

June 15 - 20, 2020

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Cited By

Zakhour GWeisenburger PCesario JSalvaneschi G(2025)Dis/Equality GraphsProceedings of the ACM on Programming Languages10.1145/37049139:POPL(2282-2305)Online publication date: 9-Jan-2025
https://dl.acm.org/doi/10.1145/3704913
Lubin JFerguson JYe KYim JChasins S(2024)Equivalence by Canonicalization for Synthesis-Backed RefactoringProceedings of the ACM on Programming Languages10.1145/36564538:PLDI(1879-1904)Online publication date: 20-Jun-2024
https://dl.acm.org/doi/10.1145/3656453
Kœhler TGoens ABhat SGrosser TTrinder PSteuwer M(2024)Guided Equality SaturationProceedings of the ACM on Programming Languages10.1145/36329008:POPL(1727-1758)Online publication date: 5-Jan-2024
https://dl.acm.org/doi/10.1145/3632900
Patton NRahmani KMissula MBiswas JDillig I(2024)Programming-by-Demonstration for Long-Horizon Robot TasksProceedings of the ACM on Programming Languages10.1145/36328608:POPL(512-545)Online publication date: 5-Jan-2024
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Thomas SBornholt JTsafrir DMUSUVATHI MGupta RAbu-Ghazaleh N(2024)Automatic Generation of Vectorizing Compilers for Customizable Digital Signal ProcessorsProceedings of the 29th ACM International Conference on Architectural Support for Programming Languages and Operating Systems, Volume 110.1145/3617232.3624873(19-34)Online publication date: 27-Apr-2024
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Coward SDrane TConstantinides G(2024)ROVER: RTL Optimization via Verified E-Graph RewritingIEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems10.1109/TCAD.2024.341015443:12(4687-4700)Online publication date: Dec-2024
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Cabrera-Arteaga JFitzgerald NMonperrus MBaudry B(2024) Wasm-MutateComputers and Security10.1016/j.cose.2024.103731139:COnline publication date: 16-May-2024
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Veuskens TRamakers RLeen DLuyten K(2023)History in Motion: Interactive 3D Animated Visualizations for Understanding and Exploring the Modeling History of 3D CAD DesignsProceedings of the 8th ACM Symposium on Computational Fabrication10.1145/3623263.3623358(1-13)Online publication date: 8-Oct-2023
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