eBook: 5 Essential Functions of 3D ACIS Modeler

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3D ACIS

Healing and Preserving 3D Model Intent

Part and parcel with model-based engineering is model translation. Because the model is now the specification, accurate translation from one system to another becomes essential. But even if a model is accurately read, the intent of the model has to also be properly interpreted. Key to proper model interpretation is healing — the process of modifying model data so that it conforms to the rules of the target system, while adhering to the intent of the source.

Seven Years of Thread Safe 3D ACIS Modeler

We are moving things around in the office here at Spatial to accommodate some new people.  As a result, our marketing closet is being cleaned out.  I walked by and noticed t-shirts from the summer of 2009, when Spatial released R20 of the 3D ACIS Modeler.  Since that release, the 3D ACIS Modeler has been thread safe, i.e, able to operate on disjoint data concurrently and correctly. The t-shirt in question made some predictions about the future of processor evolution. Some predictions came true, some did not.

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Outcome Checking, Logging and Progress Reporting in 3D ACIS

capture meta-data about ACIS APIs This article shares a simple architecture which can be used to capture meta-data about the use of ACIS APIs in your program. It can be used to record the filename, line number, arguments and outcome of each API. C language preprocessor macros are used to invoke methods on a static object called spa::CheckOutcome.

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Create an Ellipsoid in 3D ACIS

How To Create an Ellipsoid using 3D ACIS

The 3D analytics supported directly in 3D ACIS include: sphere, block, pyramid, cone, and torus. These shapes can be changed to more generalized shapes using simple tricks that may not be known by everyone. For instance, to create a well behaved ellipsoid, convert a sphere to a spline and perform non-uniform scaling on it, as shown by the following Scheme script:

(define ellipsoid (lambda (r1 r2 r3)

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The Top 5 Essential Functions of 3D ACIS Modeler

A geometry kernel is a big thing. It’s a huge thing. Maybe even big enough to see from space. By most accounts, even the Great Wall of China is not visible from space. However, other huge infrastructure is: highways, airports, bridges, and dams. This is the scale for this post. Decades of work, in a five topic flyover.

1. Creating 3D models

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A Leap of Faith

In earlier posts I’ve written a lot about the various approaches to multiprocessing and the potential benefits. What I haven’t talked much about is the risk and commitment one must accept when embracing these technologies. The efforts go well beyond the initial investigation and implementation phases, to ongoing testing and maintenance. It is a continual obligation to assure correctness throughout the life-cycle of a multithreaded product.

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3D ACIS Modeler R23: What We’ve Done For You Lately

The challenges of a major software release are not unique to Spatial. And like other organizations, the launch process looks different to various departments in the organization. There are those in Marketing who view each release event as part of a beautiful, butterfly-like progression. On the other end of the spectrum, you have factions within development and testing who see things as more like the manufacturing of really tasty sausage. Across all of Spatial and our partners, however, we are very happy to announce the general availability of 3D ACIS Modeler R23.

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How Healthy is Your B-rep?

We’ve known for a long time that the integrity of B-rep data plays a major role in the success of downstream modeling operations; but it has always been a difficult task communicating this back to our users in a meaningful manner. For ACIS we have had an external geometry and topology checker since the beginning of the product; it serves the function of defining illegal state(s) of the model.  It has, and still does, serve its purpose.

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