PLUGGY

@article{gonzalez-toledo_spheroidal_2024,

title = {The spheroidal trackball: generalising the fixed trackball for virtual camera navigation},

author = {Daniel González-Toledo and María Cuevas-Rodríguez and Luis Molina-Tanco and Arcadio Reyes-Lecuona},

url = {https://doi.org/10.1007/s00371-023-03250-w},

doi = {10.1007/s00371-023-03250-w},

issn = {1432-2315},

year  = {2024},

date = {2024-02-01},

journal = {The Visual Computer},

abstract = {Virtual trackball techniques have become a standard in 3D applications, particularly for interfaces with limited degrees of freedom such as touchscreens or mice. The fact that we are used to them does not mean that they cannot be improved upon. Recent research has highlighted the significance of considering users’ mental models of a preferred rotation axis, as it can improve performance, perceived usability and perceived workload. Building upon these findings, this paper introduces the spheroidal trackball framework—a novel method for orbiting the virtual camera around elongated objects. The paper presents the mathematical formulation and the evaluation of the technique. The formulation offers enough information to implement the approach. The evaluation shows the advantages of this approach over the fixed spherical trackball for this class of objects, in terms of task performance, usability and perceived workload. This research constitutes an advancement in the refinement of 3D user interaction techniques, opening new avenues of innovation in this still evolving field.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Sti/2023,

title = {Still room for improvement in traditional 3D interaction: selecting the fixed axis in the virtual trackball},

author = {Daniel González Toledo and María Cuevas-Rodríguez and Luis Molina-Tanco and Arcadio Reyes-Lecuona},

url = {https://link.springer.com/article/10.1007/s00371-021-02394-x},

doi = {10.1007/s00371-021-02394-x},

year  = {2023},

date = {2023-03-01},

urldate = {2022-01-01},

journal = {The Visual Computer},

volume = {39},

pages = {1149–1162},

abstract = {Virtual trackball techniques are widely used when 3D interaction is performed through interfaces with a reduced number of degrees of freedom such as mice and touchscreens. For decades, most implementations fix a vertical axis of rotation, which is a suitable choice when the vertical axis should indeed be fixed, according to some mental model of the user. We conducted an experiment involving the use of a mouse and a touch device to study usability in terms of performance, perceived usability and mental workload when selecting different fixed axes in accordance with the user’s mental model. The results we obtained indicate that the consistency between the axis fixed by the technique and the object’s intrinsic axis has a positive effect on usability. We believe that implementations that allow to select different fixed axis for each specific object should be considered when designing future reduced-DoF interaction interfaces.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{HOM/2018,

title = {HOM3R: A 3D Viewer for Complex Hierarchical Product Models},

author = {Daniel González-Toledo and María Cuevas-Rodríguez and Carlos Garre del Olmo and Luis Molina-Tanco and Arcadio Reyes-Lecuona},

url = {https://www.jvrb.org/past-issues/14.2017/4696},

doi = {10.20385/1860-2037/14.2017.3},

issn = {1860-2037},

year  = {2018},

date = {2018-01-01},

journal = {Journal of Virtual Reality and Broadcasting},

volume = {14},

number = {3},

abstract = {We present HOM3R, a novel 3D viewer designed to manage complex industrial product models. The viewer includes a JavaScript API to interface with existing or new browser-based applications. We extend state-of-the art interaction techniques and introduce a novel navigation metaphor to navigate around complex products using constrained trajectories. To address the challenge of discovering and accessing the parts of the complex object, which are not visible, a set of occlusion management techniques have been implemented. The viewer presents other useful features such as hierarchical part selection and linking of information to 3D geometry. A user-centred evaluation of the tool has been carried out and is described in the paper},

keywords = {},

pubstate = {published},

tppubtype = {article}

}