It's a big deal.

The expressions of Edward Williams, deputy chief engineer of Boeing, Roman Rohde, senior engineer of Lockheed, and Hugh Robert, senior vice president of Grumman, suddenly became serious.

If CAD software using Bezier curves provides the necessary conditions for surface modeling, NURBS curves make free-form surface modeling possible.

THE AUTOCAD SOFTWARE WRITTEN BY YANG WEINING HAS UNDOUBTEDLY LED THE WORLD'S PEERS.

Among the four, only Cahill, senior vice president of Raytheon, did not change his face, after all, Raytheon's products are mainly focused on sensing and electronic systems, command, control and communication C3 systems, intelligence, information and aircraft integrated systems, etc., and they are not as sensitive to CAD software as Hugh and them.

Harper immediately noticed the abnormality of Hugh and the others, and asked in a low voice, "Mr. Hugh, what's wrong with you?"

Hugh shook his head and said, "This software written by the Chinese solves the problem of free-curve surface modeling. ”

"Huh, the free-form curve surface problem is hard to solve?"

Harper was slightly stunned, a little puzzled.

After all, he was not an expert in the field, and he did not know much about the meaning of Hugh's words.

Hugh smiled wryly: "This software is the only CAD software in the world that solves the problem of freeform surfaces. ”

"The only one in the world?"

Harper's eyes condensed slightly, and he suddenly understood, and his gaze at Yang Weining couldn't help but become a little shocked.

Could this young Chinese have developed the world's leading CAD software?

You must know that since serving as military attache of the United States of America Embassy in China, Harper has been exposed to a large amount of intelligence on China's military science and technology, and naturally understands that there is a gap between China's scientific and technological level and that of the United States for decades.

Who would have thought that in the field of CAD, the Chinese are actually ahead of the world.

How the hell did this young man do it?

Lu Wenjun and Yang Zhenguo are not fools, and they also see the strangeness of the Americans.

If they were worried about whether this software would attract the attention of Americans, now they have put that worry out of the clouds.

THE PERFORMANCE OF HUGH AND OTHERS HAS UNDOUBTEDLY PROVED THE POWER OF AUTOCAD.

For a while, Lu Wenjun, Yang Zhenguo and others, who were originally a little nervous, also breathed a sigh of relief.

Yang Weining didn't seem to see the abnormality of everyone present, smiled slightly, and continued to say without surprise: "In order to solve the problem of generating and editing the free curve surface, in addition to focusing on solving the DeCastellio algorithm for generating NURBS curves, I also added a rectangular bounding box algorithm to find the intersection of two curves and an algorithm for fine-tuning the curve through the weight factor. In the surface generation part, the generation function of the freeform surface defined on the four-corner domain is mainly solved, and the generation method of the triangular freeform surface is emphatically studied, the variation point method of the skin surface is developed, and the HCT partitioning of the trilateral Berzier surface and the triangular surface is explored. In the surface editing part, the solid generation and the use of surface editing are combined, and the basic functions provided by the Parasolid kernel function and the mature and flexible advantages of curve surface modeling technology are fully explored and combined. ”

Everyone in the conference room was in a state of confusion, Yang Weining's words were said in English, fast and urgent, and all kinds of lofty professional terms were thrown out as if they didn't want money, not only the translator was stunned, but even the Americans on the scene were stunned.

Weight Factor Fine Tuning Curve Algorithm?

Rectangular bounding box algorithm?

Parasolid kernel functions?

What the hell are these?

"Mr. Wei Ningyang, what kind of algorithm curve is the weight factor fine-tuning curve you just mentioned?"

Hugh Robert of Grumman couldn't help but ask.

Yang Weining smiled: "Mr. Robert, this is an algorithm developed by me personally, because it involves relevant secrets, I am sorry that I can't go into details." ”

YOU MUST KNOW THAT THE ALGORITHM IS THE CORE OF AUTOCAD SOFTWARE, AND THESE ALGORITHMS ARE ALL ALGORITHMS THAT HAVE BEEN WIDELY USED IN CAD SOFTWARE IN LATER GENERATIONS, BUT IN THIS ERA, IT IS AN ANTI-HEAVEN ARTIFACT OF AUTOCAD DOMINATING THE WORLD MARKET, AND YANG WEINING WILL NATURALLY NOT REVEAL HALF A SENTENCE.

Hugh Robert knew that he was reckless, and reluctantly smiled: "I'm sorry, Mr. Wei Ningyang, I was presumptuous, please continue!"

If Hugh Robert still had a condescending arrogance in the face of the Chinese, but in the face of Yang Weining, he did not have any idea of superiority.

THIS YOUNG MAN AND THE AUTOCAD SOFTWARE HE DEVELOPED MEANT A LOT TO GRUMMAN.

Several important arms dealers in the U.S. aerospace field have their own layouts in the CAD field, such as Lockheed's CADAM, Boeing's CV, and McDonnell Douglas' UG.

Yang Weining and his AUTOCAD software allowed Hugh Robert to see the dawn of Grumman's rise in the CAD field.

You must know that the Chinese in this era are still quite short-sighted in their vision of the world, and they have an inexplicable admiration for foreigners, and if they operate properly, they may not be able to incorporate Yang Weining and his AUTOCAD under Grumman.

Thinking of this, Hugh couldn't help but show a smile on his face.

Yang Weining naturally didn't know that he had become a prey in the eyes of the Americans, and even if he knew, he probably wouldn't care.

Who is the hunter and who is the prey, that's not to say!

Next, he introduced the assembly design module, aviation sheet metal module, electrical equipment and bracket modeling module, cable routing path module, wire harness installation module, electrical generation module and finite element generator module of AUTOCAD to everyone in the conference room.

As these modules were introduced one by one, the expressions on the faces of Hugh and others became more and more exciting.

From the disdain at the beginning, to the slight surprise later, to the inexplicable horror, and in the end, the expression on Hugh's face was completely dull.

Compared with the software developed by Yang Weining, whether it is Lockheed's CADAM or Boeing's CV, they have all been turned into slag in seconds.

Not to mention AUTOCAD's breakthrough in free-form curve surface modeling, a single assembly design module is enough to open the eyes of the Americans on the scene.

For the first time, they discovered that the original CAD software in the aerospace industry could be designed in this way.

Not to mention the modules behind it such as aerospace sheet metal, electrical equipment, and bracket modeling.

AUTOCAD DEVELOPED BY YANG WEINING CAN BECOME A STANDARD TEMPLATE FOR OTHER CAD SOFTWARE TO EMULATE.

In particular, the final finite element generator module allowed Hugh, Williams and others to see the dawn of large-scale realization of CAE (computer-aided manufacturing).