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Article

Computer-Aided Sketching: Incorporating the Locus to Improve the Three-Dimensional Geometric Design

1
Department of Engineering Graphics, Design and Projects, University of Jaén, 23071 Jaén, Spain
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Department of Engineering Graphics and Design, Serra Hunter Programme, Polytechnic University of Catalonia, Terrassa, 08222 Barcelona, Spain
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Department of Engineering Graphics and Design, Polytechnic University of Catalonia, Terrassa, 08222 Barcelona, Spain
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Author to whom correspondence should be addressed.
Symmetry 2020, 12(7), 1181; https://doi.org/10.3390/sym12071181
Received: 13 June 2020 / Revised: 8 July 2020 / Accepted: 15 July 2020 / Published: 16 July 2020
(This article belongs to the Special Issue Advances on Engineering Graphics: Improvements and New Proposals)
This article presents evidence of the convenience of implementing the geometric places of the plane into commercial computer-aided design (CAD) software as auxiliary tools in the computer-aided sketching process. Additionally, the research considers the possibility of adding several intuitive spatial geometric places to improve the efficiency of the three-dimensional geometric design. For demonstrative purposes, four examples are presented. A two-dimensional figure positioned on the flat face of an object shows the significant improvement over tools currently available in commercial CAD software, both vector and parametric: it is more intuitive and does not require the designer to execute as many operations. Two more complex three-dimensional examples are presented to show how the use of spatial geometric places, implemented as CAD software functions, would be an effective and highly intuitive tool. Using these functions produces auxiliary curved surfaces with points whose notable features are a significant innovation. A final example provided solves a geometric place problem using own software designed for this purpose. The proposal to incorporate geometric places into CAD software would lead to a significant improvement in the field of computational geometry. Consequently, the incorporation of geometric places into CAD software could increase technical-design productivity by eliminating some intermediate operations, such as symmetry, among others, and improving the geometry training of less skilled users. View Full-Text
Keywords: computer-aided sketching; locus; three-dimensional geometric design; computer-aided design; geometric restriction; dimensional restriction computer-aided sketching; locus; three-dimensional geometric design; computer-aided design; geometric restriction; dimensional restriction
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MDPI and ACS Style

Rojas-Sola, J.I.; Hernández-Díaz, D.; Villar-Ribera, R.; Hernández-Abad, V.; Hernández-Abad, F. Computer-Aided Sketching: Incorporating the Locus to Improve the Three-Dimensional Geometric Design. Symmetry 2020, 12, 1181. https://doi.org/10.3390/sym12071181

AMA Style

Rojas-Sola JI, Hernández-Díaz D, Villar-Ribera R, Hernández-Abad V, Hernández-Abad F. Computer-Aided Sketching: Incorporating the Locus to Improve the Three-Dimensional Geometric Design. Symmetry. 2020; 12(7):1181. https://doi.org/10.3390/sym12071181

Chicago/Turabian Style

Rojas-Sola, José I., David Hernández-Díaz, Ricardo Villar-Ribera, Vicente Hernández-Abad, and Francisco Hernández-Abad. 2020. "Computer-Aided Sketching: Incorporating the Locus to Improve the Three-Dimensional Geometric Design" Symmetry 12, no. 7: 1181. https://doi.org/10.3390/sym12071181

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