Problem of transformation the wireframe model of the 3D object, restored from its technical drawing

2018 ◽  
Vol 10 (5) ◽  
pp. 13-31
Author(s):  
T.V. Moshkova ◽  
S.I. Rotkov ◽  
M.M. Smychek ◽  
V.A. Tyurina
Author(s):  
Валерия Тюрина ◽  
Valeriya Tyurina ◽  
Сергей Ротков ◽  
Sergey Rotkov ◽  
Татьяна Мошкова ◽  
...  

The level of quality of the wireframe model obtained in the first stage of solving the problem of restoring the image of a non-planar object depends on the completeness of using the classes of graphic information used to synthesize a 3D model according to the technical drawing. In cases where the drawing is quite simple and allows you to read complete information about the object by existing procedures of automatic "reading the drawing", it is possible to restore the frame models that are fully consistent with the synthesized object. They can be used immediately for further transformations to other types of 3D models. Such frame models are characterized by the fact that all the vertices and edges included in their structure belong to the surface of the desired object. But in most practical cases, when the simulated objects correspond to real products and their technical drawing is full of difficult to formalize information, in the structure of frame models built according to standard procedures, due to a number of objective reasons, there are false geometric elements, i.e. those that are not on the surface of the desired 3D object. This leads to the ambiguity of the restoration of a unique wireframe model corresponding to the object specified in the technical drawing, and requires the development of procedures to avoid the multiplicity of solutions.


ROBOT ◽  
2013 ◽  
Vol 35 (4) ◽  
pp. 439 ◽  
Author(s):  
Lin WANG ◽  
Jianfu CAO ◽  
Chongzhao HAN

PEDAGOGIKA ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 59-71
Author(s):  
Nina Lamatenggo ◽  
Irun Abubakar ◽  
Intan Abdul Razak

The purpose of this study was to determine the fulfillment of facilities and infrastructure of general learning spaces, supporting spaces and special learning spaces at SMK Almamater Telaga. This type of research is quantitative with the type of descriptive research. Data collection techniques using interviews, observation, data collection instruments and documentation. The results of the study are 1) the facilities and infrastructure of the general learning space are met according to the standards, and not according to the standards namely Biology Lab, Physics Lab, Chemistry Lab, Natural Sciences, Language Lab and technical drawing practice room. Whereas the facilities for 2 classrooms are in accordance with the standard and 13 classrooms, the library, and the computer lab are not yet in accordance with the standard, 2) the supporting facilities and infrastructure are met according to the standard, toilets, counseling rooms, UKS, and circulation rooms not according to standards, 3) facilities and special learning space infrastructure are not yet up to standard. Suggestions in this research are to pay more attention to the development of LAB infrastructure in Chemistry, Biology, Physics, Science, Technical Drawing Practice Room, Counseling Room, UKS Room and circulation room. In addition, the area of special learning space for all majors is adjusted according to the work area of each department.


1974 ◽  
Vol 20 ◽  
pp. 235-245

It was a tragic irony of fate that Ronald Holroyd should have died on 29 September 1973, just on the eve of the energy crisis which suddenly and dramatically focused the attention of the Western World on the urgency of finding an alternative fuel to Middle East oil, which had almost overnight become scarce and expensive. For the outstanding work of Holroyd s career, before and during the last war, was in attempting to provide a liquid fuel based on coal, and, apart from a wartime success when availability was the paramount consideration, these attempts failed largely because Middle East oil was plentiful and cheap. Ronald Holroyd was born at Horbury, near Wakefield, on 26 April 1904, the son of Sykes and Florence Holroyd. His father started work as a boy of eleven at the firm of Sykes Bros, sporting goods’ manufacturers at Horbury, and attended evening classes at Wakefield where he proved to be a first class student and was subsequently invited to teach in the evenings. This work increased and as a result he was invited to join the full time staff of the Miming and Technical School at Barnsley, where he taught mathematics, mechanics and technical drawing. He had a quick and lively mind which remained with him until he died, a few years ago, at the age of 92, still absorbed in mathematics. Florence Holroyd, his wife, was a teacher and there is no doubt that Ronald Holroyd owed a great deal to their deep interest in educational matters, and to their encouragement in his formative years.


Sign in / Sign up

Export Citation Format

Share Document