Abstract We discuss the importance of visualization skills in engineering education and propose a... more Abstract We discuss the importance of visualization skills in engineering education and propose a dual approach to helping students improve their spatial abilities. The approach is based on computer graphics applications, and uses both Web-based graphics applications and a sketch-based modeling, system. By combining these approaches, we can capture students' attention and foster two important engineering skills: freehand sketching and an understanding of the relationship between orthographic and axonometric views.
... a Universitat Jaume I, Department of Mechanical Engineering and Construction, Campus del Riu ... more ... a Universitat Jaume I, Department of Mechanical Engineering and Construction, Campus del Riu Sec., E-12071 Castellon, Spain. b Polytecnic University of Valencia, ETSII–DEGI, Caminode Vera s/n, E-46022 Valencia, Spain. Available online 10 October 2005. Abstract. ...
Sketching is an established part of engineering culture. Sketches assist product designers during... more Sketching is an established part of engineering culture. Sketches assist product designers during the creative stages of design and help them to develop inventions. Paper-and-pencil sketching is highly useful but lacks functionalities, mainly because it is disconnected from the rest of the (computer-aided) design process. However, CAS tools are not yet as usable as paper-and-pencil, although they provide full integration with the subsequent phases of the design processes (CAD, CAE, CAM, etc.) and other interesting functionalities. We ...
International Journal of Engineering Education, 2007
There are many references in current literature that justify the role of spatial reasoning as a f... more There are many references in current literature that justify the role of spatial reasoning as a fundamental skill for engineers. Until the 90's, in Europe, this skill was introduced indirectly in the curricula as the “ability” required for both understanding and solving Descriptive Geometry problems, and reading and sketching technical drawings. Learning to use a 2D CAD package was offered usually as a complement to these classical contents. Progressively 3D modeling was incorporated in order to support the virtual prototype ...
Sketching is an established part of engineering culture. Sketches assist product designers during... more Sketching is an established part of engineering culture. Sketches assist product designers during the creative stages of design and help them to develop inventions. Paper-and-pencil sketching is highly useful but lacks functionalities, mainly because it is disconnected from the rest of the (computer-aided) design process. However, CAS tools are not yet as usable as paper-and-pencil, although they provide full integration with the subsequent phases of the design processes (CAD, CAE, CAM, etc.) and other interesting functionalities. We ...
Current user interfaces of CAD systems are still not suited to the initial stages of product deve... more Current user interfaces of CAD systems are still not suited to the initial stages of product development, where freehand drawings are used by engineers and designers to express their visual thinking. In order to exploit these sketching skills, we present a sketch based modeling system, which provides a reduced instruction set calligraphic interface to create orthogonal polyhedra, and an extension of them we named quasi-normalons. Our system allows users to draw lines on free-hand axonometric-like drawings, which are automatically tidied and beautified. These line drawings are then converted into a three-dimensional model in real time because we implemented a fast reconstruction process, suited for quasi-normalon objects and so-called axonometric inflation method, providing in this way an innovative integrated 2D sketching and 3D view visualization work environment.
... a Universitat Jaume I, Department of Mechanical Engineering and Construction, Campus del Riu ... more ... a Universitat Jaume I, Department of Mechanical Engineering and Construction, Campus del Riu Sec., E-12071 Castellon, Spain. b Polytecnic University of Valencia, ETSII–DEGI, Caminode Vera s/n, E-46022 Valencia, Spain. Available online 10 October 2005. Abstract. ...
ParSketch is a software prototype to evaluate the usability and functionality of a sketching inte... more ParSketch is a software prototype to evaluate the usability and functionality of a sketching interface aimed at defining 2D parametric sections. Currently, ParSketch interprets strokes which can be recognized as geometry (line, arc, circle, ellipse, or composed entities that are automatically segmented into those basic entities), or graphic gestures representing constraints (dimension, parallel, perpendicular, tangent, concentric, horizontal or vertical). From the functionality point of view, ParSketch compares to current commercial parametric CAD applications, as it offers many of the features provided by such applications. A theoretical analysis of the efficiency component of usability is provided that justifies the potential capability of sketching interfaces to compete with classical WIMP applications. Finally, a usability study is presented, which makes special emphasis in the satisfaction component of usability.
Sketching is an established part of engineering culture. Sketches assist product designers during... more Sketching is an established part of engineering culture. Sketches assist product designers during the creative stages of design and help them to develop inventions. Paper-and-pencil sketching is highly useful but lacks functionalities, mainly because it is disconnected from the rest of the (computer-aided) design process. However, CAS tools are not yet as usable as paper-and-pencil, although they provide full integration with the subsequent phases of the design processes (CAD, CAE, CAM, etc.) and other interesting functionalities. We ...
2013 IEEE Frontiers in Education Conference (FIE), 2013
ABSTRACT Dimensioning plays an important role in the product development process. It is usually l... more ABSTRACT Dimensioning plays an important role in the product development process. It is usually learned through sketching exercises where students add the corresponding dimensions to different parts of an engineering drawing. Nevertheless, being able to self-learn proper dimensioning methods is challenging, as a geometric figure requires a specific number of dimensions to be correctly defined. This paper presents an educational software application for multi-touch tablet devices to support dimensioning activities. Our application uses a multi-touch interface where students can create 2D parametric drawings with dimensions using freehand sketches and receive feedback from the system about the quality of their dimensioning exercises. When a student finishes a sketch, the system reports back the correct and incorrect dimensions. Multi-touch gestures are also used for basic sketch manipulation (panning, zooming, and rotating), similar to the standard functionality found in modern smart phones and tablets. Preliminary experiences show that multi-touch interfaces provide an effective way to capture students' attention. Students found the system very natural, and the time required to learn how to use the application is short. They enjoyed the simplicity of the interface and valued the powerful control of the geometry.
This paper presents a calligraphic editor for tile and textile design. This editor is part of an ... more This paper presents a calligraphic editor for tile and textile design. This editor is part of an integrated system for graphic design, and includes also structural edition and retrieval tools to exploit design pattern databases. Drawing and some commands for geometrical transformations are specified by means of freehand strokes. Paper describes both user interface and its implementation details. A detailed design example is presented, where an ornamental motive, belonging to a pattern design has been generated by the gestural ...
Abstract We discuss the importance of visualization skills in engineering education and propose a... more Abstract We discuss the importance of visualization skills in engineering education and propose a dual approach to helping students improve their spatial abilities. The approach is based on computer graphics applications, and uses both Web-based graphics applications and a sketch-based modeling, system. By combining these approaches, we can capture students' attention and foster two important engineering skills: freehand sketching and an understanding of the relationship between orthographic and axonometric views.
... a Universitat Jaume I, Department of Mechanical Engineering and Construction, Campus del Riu ... more ... a Universitat Jaume I, Department of Mechanical Engineering and Construction, Campus del Riu Sec., E-12071 Castellon, Spain. b Polytecnic University of Valencia, ETSII–DEGI, Caminode Vera s/n, E-46022 Valencia, Spain. Available online 10 October 2005. Abstract. ...
Sketching is an established part of engineering culture. Sketches assist product designers during... more Sketching is an established part of engineering culture. Sketches assist product designers during the creative stages of design and help them to develop inventions. Paper-and-pencil sketching is highly useful but lacks functionalities, mainly because it is disconnected from the rest of the (computer-aided) design process. However, CAS tools are not yet as usable as paper-and-pencil, although they provide full integration with the subsequent phases of the design processes (CAD, CAE, CAM, etc.) and other interesting functionalities. We ...
International Journal of Engineering Education, 2007
There are many references in current literature that justify the role of spatial reasoning as a f... more There are many references in current literature that justify the role of spatial reasoning as a fundamental skill for engineers. Until the 90's, in Europe, this skill was introduced indirectly in the curricula as the “ability” required for both understanding and solving Descriptive Geometry problems, and reading and sketching technical drawings. Learning to use a 2D CAD package was offered usually as a complement to these classical contents. Progressively 3D modeling was incorporated in order to support the virtual prototype ...
Sketching is an established part of engineering culture. Sketches assist product designers during... more Sketching is an established part of engineering culture. Sketches assist product designers during the creative stages of design and help them to develop inventions. Paper-and-pencil sketching is highly useful but lacks functionalities, mainly because it is disconnected from the rest of the (computer-aided) design process. However, CAS tools are not yet as usable as paper-and-pencil, although they provide full integration with the subsequent phases of the design processes (CAD, CAE, CAM, etc.) and other interesting functionalities. We ...
Current user interfaces of CAD systems are still not suited to the initial stages of product deve... more Current user interfaces of CAD systems are still not suited to the initial stages of product development, where freehand drawings are used by engineers and designers to express their visual thinking. In order to exploit these sketching skills, we present a sketch based modeling system, which provides a reduced instruction set calligraphic interface to create orthogonal polyhedra, and an extension of them we named quasi-normalons. Our system allows users to draw lines on free-hand axonometric-like drawings, which are automatically tidied and beautified. These line drawings are then converted into a three-dimensional model in real time because we implemented a fast reconstruction process, suited for quasi-normalon objects and so-called axonometric inflation method, providing in this way an innovative integrated 2D sketching and 3D view visualization work environment.
... a Universitat Jaume I, Department of Mechanical Engineering and Construction, Campus del Riu ... more ... a Universitat Jaume I, Department of Mechanical Engineering and Construction, Campus del Riu Sec., E-12071 Castellon, Spain. b Polytecnic University of Valencia, ETSII–DEGI, Caminode Vera s/n, E-46022 Valencia, Spain. Available online 10 October 2005. Abstract. ...
ParSketch is a software prototype to evaluate the usability and functionality of a sketching inte... more ParSketch is a software prototype to evaluate the usability and functionality of a sketching interface aimed at defining 2D parametric sections. Currently, ParSketch interprets strokes which can be recognized as geometry (line, arc, circle, ellipse, or composed entities that are automatically segmented into those basic entities), or graphic gestures representing constraints (dimension, parallel, perpendicular, tangent, concentric, horizontal or vertical). From the functionality point of view, ParSketch compares to current commercial parametric CAD applications, as it offers many of the features provided by such applications. A theoretical analysis of the efficiency component of usability is provided that justifies the potential capability of sketching interfaces to compete with classical WIMP applications. Finally, a usability study is presented, which makes special emphasis in the satisfaction component of usability.
Sketching is an established part of engineering culture. Sketches assist product designers during... more Sketching is an established part of engineering culture. Sketches assist product designers during the creative stages of design and help them to develop inventions. Paper-and-pencil sketching is highly useful but lacks functionalities, mainly because it is disconnected from the rest of the (computer-aided) design process. However, CAS tools are not yet as usable as paper-and-pencil, although they provide full integration with the subsequent phases of the design processes (CAD, CAE, CAM, etc.) and other interesting functionalities. We ...
2013 IEEE Frontiers in Education Conference (FIE), 2013
ABSTRACT Dimensioning plays an important role in the product development process. It is usually l... more ABSTRACT Dimensioning plays an important role in the product development process. It is usually learned through sketching exercises where students add the corresponding dimensions to different parts of an engineering drawing. Nevertheless, being able to self-learn proper dimensioning methods is challenging, as a geometric figure requires a specific number of dimensions to be correctly defined. This paper presents an educational software application for multi-touch tablet devices to support dimensioning activities. Our application uses a multi-touch interface where students can create 2D parametric drawings with dimensions using freehand sketches and receive feedback from the system about the quality of their dimensioning exercises. When a student finishes a sketch, the system reports back the correct and incorrect dimensions. Multi-touch gestures are also used for basic sketch manipulation (panning, zooming, and rotating), similar to the standard functionality found in modern smart phones and tablets. Preliminary experiences show that multi-touch interfaces provide an effective way to capture students' attention. Students found the system very natural, and the time required to learn how to use the application is short. They enjoyed the simplicity of the interface and valued the powerful control of the geometry.
This paper presents a calligraphic editor for tile and textile design. This editor is part of an ... more This paper presents a calligraphic editor for tile and textile design. This editor is part of an integrated system for graphic design, and includes also structural edition and retrieval tools to exploit design pattern databases. Drawing and some commands for geometrical transformations are specified by means of freehand strokes. Paper describes both user interface and its implementation details. A detailed design example is presented, where an ornamental motive, belonging to a pattern design has been generated by the gestural ...
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