TDD An Interactive Three Dimensional Drawing Program for Graphical Display and Lightpen

1971 ◽  
pp. 1035-1047 ◽  
Author(s):  
R. J. Hubbold
2010 ◽  
Vol 24 (1) ◽  
pp. 23-42 ◽  
Author(s):  
T. S. Amer ◽  
Sury Ravindran

ABSTRACT: Graphical displays of business and accounting information are widely used as decision aids. Theoretical work in visual perception indicates graphs that exhibit certain characteristics create visual illusions that may result in biased decision making. This paper reports the results of an experiment that demonstrates how such two-dimensional and three-dimensional visual illusions cause viewers to make biased comparison judgments. The experiment also shows that these decision biases can be mitigated by including gridlines in both two- and three-dimensional graphs.


2011 ◽  
Vol 44 (6) ◽  
pp. 1281-1284 ◽  
Author(s):  
Christian B. Hübschle ◽  
George M. Sheldrick ◽  
Birger Dittrich

ShelXleis a graphical user interface forSHELXL[Sheldrick, G. M. (2008).Acta Cryst.A64, 112–122], currently the most widely used program for small-molecule structure refinement. It combines an editor with syntax highlighting for theSHELXL-associated .ins (input) and .res (output) files with an interactive graphical display for visualization of a three-dimensional structure including the electron density (Fo) and difference density (Fo–Fc) maps. Special features ofShelXleinclude intuitive atom (re-)naming, a strongly coupled editor, structure visualization in various mono and stereo modes, and a novel way of displaying disorder extending over special positions.ShelXleis completely compatible with all features ofSHELXLand is written entirely in C++ using the Qt4 and FFTW libraries. It is available at no cost for Windows, Linux and Mac-OS X and as source code.


2021 ◽  
Vol 2131 (2) ◽  
pp. 022127
Author(s):  
Elena Pinevich ◽  
Denis Mayorov ◽  
Olga Safaryan ◽  
Elena Lagunova ◽  
Konstantin Fisenko

Abstract This article is devoted to the geometric representation of sets. The paper presents an implementation that allows using operations on sets to build any images. For this algorithm, the equations of first-and second-order lines on the plane and first-and second-order surfaces in space are used. Restrictions are introduced by setting segments on the coordinate axes, indicating whether lines or surfaces belong to these segments. Inequalities are used to create the shaded area of the drawings. In the course of research on this topic, a software tool was developed that allows you to model drawings using the entered formulas, build images based on a set of operations on given sets of points, which allows you to have an analytical description of the drawings. This software tool can be used both in the educational process to test the correctness of the assimilation of the material, and to create flat geometric shapes and three-dimensional bodies for the purpose of engineering the optimal forms of structures and various parts. This application allows the user, performing operations with mathematical expressions and inequalities, to get a graphical display of the result with a mathematical description of any part of the figure.


2018 ◽  
pp. 52-56

Representación gráfica de las funciones complejas con el Mathematica Graphical display of complex functions with Mathematica Ricardo Velezmoro y Robert Ipanaqué Universidad Nacional de Piura, Urb. Miraflores s/n, Castilla, Piura, Perú. DOI: https://doi.org/10.33017/RevECIPeru2015.0008/ Resumen La representación gráfica de las funciones de valor complejo, de una variable compleja, es un tema de mucho interés dado que la gráfica de una función de este tipo tendría que ser dibujada en un espacio tetra dimensional. Este artículo presenta una propuesta para representar tales gráficas mediante el uso de un modelo basado en una submersión, del espacio tetra dimensional en el espacio tridimensional; para luego, con ayuda del Mathematica llegar a obtener una representación de las mencionadas gráficas en una pantalla 2D. Adicionalmente, se implementarán algunos comandos en el Mathematica, los mismos que permitirán realizar las representaciones de variados e interesantes ejemplos. Descriptores: función compleja, visualización, submersión Abstract The graphical display of complex-valued functions of a complex variable is a subject of much interest since the graph of such a function would have to be drawn in a four-dimensional space. This article presents a proposal to display such graphs using a model based on a submersion, from four-dimensional space to three-dimensional space; then, with the help of Mathematica arrive at a representation of the graphs mentioned in a 2D screen. Additionally, some commands are implemented in Mathematica, the same that will make representations varied and interesting examples. Keywords: complex function, visualization, submersion


Author(s):  
Joseph F. Boudreau ◽  
Eric S. Swanson

While the visualization of data is critical for many scientific applications, the development of programs to render geometrical forms in real time, providing interactive control over viewpoint and angle, animation, and/or user interaction, can be complicated for a scientist. The need to master unfamiliar technology such as graphics engines, windowing software, and graphical user interfaces constitute major challenges. An introduction to the graphical display of data using the Coin3d toolkit for object modeling and rendering is given. The Qt library for graphical user interfacing and the SoQt package, which serves as “glue” between Qt and Coin3d are also presented. Applications to visualizing fractal geometries, three-dimensional objects, and random data are presented.


2021 ◽  
pp. 103-114
Author(s):  
Zhang Juming ◽  
Liu Chengzou ◽  
Sun Huiwen

Author(s):  
Matthew C Parker ◽  
Graham K Hargrave

Data acquisition and analysis are an intrinsic part of motorsport, helping a race team objectively evaluate the performance of both their car and driver. Over time, data acquisition has become almost universally employed through all levels of racing. While large teams in the sport’s highest ranks have many resources to derive answers from these data, users in more minor ‘stepping stone’ categories often find themselves unable to successfully exploit the full potential of the information gathered because of its volume and their limited resources. Further to issues associated with the volume of data, recent trends in racing have seen cuts to the time available for driver and car testing through all levels of the sport to reduce escalating competition costs. While users are faced with ever more data and less time in which to extract useful information, the tools provided by commercial analysis packages have shown little development. This article describes the investigation into a new three-dimensional graphical display method, which aims to help the user more rapidly assimilate acquired motorsport data to the race car producing it. The first two preliminary stages of development of this system are presented, demonstrating the ability of the system to operate with two levels of complexity, which might be considered to suitably represent different levels of user. Together, results from both demonstrate the system’s potential for further development as a useful tool for accelerating a race team’s analysis of acquired data.


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