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DOMUS.CAD

 Comparing CAD Programs

Domus.Cad vs others

 

Some Useful Advice for Experienced CAD Users

As is the normal procedure to help introduce programs to local markets, our international contacts and distributors often send NFR's to the press for review. While the publicity raises consumer awareness it presents other challenges, especially in the CAD sector where there are already several products on the market. Differentiating a new program from those already known becomes difficult.

We believe the problem derives from the fact that at first glance Domus.Cad greatly resembles other more widely known programs, such as its competitors ArchiCad and MiniCad, when in reality it is quite different and innovative in several respects.

There were similar problems several years ago when Domus.Cad was first introduced here in Italy. Those reviewing the program tended to search for only those features present in programs they already knew, either underestimating new and different features or overlooking them completely. With time the situation has changed. So much so, in fact, that Domus.Cad was awarded 1996 CAD program of the year (beating out both MiniCad and ArchiCad) by the readers of Applicando, Italy's most widely distributed computer magazine.

In an effort to help reduce confusion, we're presenting here a list of "things to look for" specifically aimed at those with experience using other CAD programs to help guide an introduction to Domus.Cad. The following points highlight specific areas and draw attention to what makes the program unique compared to others. We will include a similar guide in the future with any NFR sent to the press, hopefully making Domus.Cad's introduction to an already crowded CAD market more successful.

Separate Drawing and Selection Modes

A user familiar with other CAD programs may at first be disoriented by Domus.Cad's use of two separate operative modes, activated individually by the Arrow and Pen icons. Programs with interface derived from MacDraw (such as MiniCad and PowerCad) do not follow this principle. In these programs, if the Arrow icon is not selected the user is automatically in Draw mode.

Domus.Cad uses two different tools to allow "selective" selections. When making selections therefore, the Arrow icon must be activated along with the appropriate element icon. Likewise, when inserting elements, the Pen icon must be activated along with the correct element icon.

Having two working modes - Drawing mode and Selection mode - allows the user to operate with greater flexibility and speed. For example, if all the doors of a particular floor of a large project must be selected for modification, the user does not have to click them all individually. They may be selected all at once - without including other unwanted elements - by simply activating the Arrow (Selection) and Door icons and tracing a rectangle encompassing the desired area. When necessary, the selective option may be disactivated by holding pressed the Command key while tracing the rectangle, allowing selection of all the enclosed elements.

Clearly, having separate operative modes makes sense only for programs such as Domus.Cad that work with constructive elements (where the ability to select only walls or stairs makes sense) and is much less advantageous in programs based on the use of geometric elements such as lines and polygons.

Automatic wall fusion

At first glance Domus.Cad's automatic wall fusion may seem nothing other than a simple procedure to connect wall extremes, much like in many other programs. In reality, however, it is very different, both practically and conceptually, permitting the user to freely move and divide walls, delete extra pieces, and create complex elements (such as several walls converging on the same vertex) quickly, representing them as a single element. It also fuses walls having different thicknesses or lying on different axes and permits the easy creation of wall niches, various window openings, and curvilinear and irregularly-shapped walls. Walls can be moved or modified while still maintaining the project's correct geometry. No other program on the market has this feature.


A moving walls sequence with automatic fusion

Other examples of walls fusions

A little test. Try to do the exemples above with Domus.Cad and other CAD programs

Immediate creation of a 3D model.

Design elements are created from the outset in their full 3D form. Although they are drawn on plan in a 2D workspace (like other CAD programs), they have 3D characteristics from the moment they are created. A wall, for example, is not a series of lines drawn in plan, then elaborated later into an object having a width and a height. It is a dynamic three-dimensional element from the moment it is drawn having a two-dimensional REPRESENTATION in plan. It is an important difference to note - Domus.Cad does not separate 2D and 3D modes and work in them separately. If the program is used in its full capacity as an interactive design tool, the user will see the full three-dimensional wall with all its assigned characteristics (including material) appear in the QuickDraw 3D window the moment it is created.

3D view updated in real time

The CAD user familiar with other programs might assume Domus.Cad's 3D View window to be simply a place where static images are displayed upon choosing a specific command. With the Interactive option activated, however, the window may be left open to visualize a rendered, continually updated view of every design addition or modification in real time. This allows the user to work naturally in plan while having complete SIMULTANEOUS control of the three-dimensional space. No other CAD product incorporates Apple's QuickDraw 3D and QUESA - Open Gl technology in this way.

Walkthroughs in real time

The 3D view window is interactively updated in REAL TIME moving the position of the view point and observed point, allowing the user to enter every angle of the design. This is very different than viewing a movie because it reaches another level of interactiveness. The generation of a movie following a predetermined path requires more time to produce and once generated it may not be changed. If changes are made, a new movie must be generated. No other CAD product offers the ability to do walkthroughs in real time with this degree of control.

Interactive 3D sections

Moving the 3D sectioning plane on the plan cuts immediately the 3D model on the 3D view.

Direct paging

Domus.Cad's internal paging may escape notice completely simply because it is not expected - no other CAD program includes a paging procedure so easy to use. ArchiCad, for example, requires plans and views to be exported to PlotMaker, meaning that the operation must be repeated after every design modification. MiniCad cannot easily print or plot a three-dimensional multilayered project. The various layers must be moved on the sheet so that they are not superimposed, losing the integrity of the original model. In Domus.Cad, any part of the design may be paged without moving elements from their original position. Drawings are also updated automatically while on the paged sheet and don't need to be repaged. Paging is at the same time separate and integrated.

Double monitors support

Domus.Cad supports double monitors on both Mac Os and Windows platforms.


The plan on the left and the interactive 3D view on the right

Apply objects

This exclusive and revolutionary function allows you to apply a library object to any selected elements, like a Window frame to window elements or a 3D forniture to selected 2D shapes (see below).

Break out parametric limits

Some programs,offer a list of frames automatically linked to door and window openings, but more often than not, the very frame you want is not there and you end up using frames which do not correspond to reality. A little experience of such programs - and you soon come to recognise them by the drawings of the frames used – always the same old ones!
Other programs (but not Domus.Cad) have come up with a totally different programming language to define the new parameters. Domus.Cad could do this too, because it can be programmed in C and C++, but this is a solution developed for programmers - not for architects.

Break out of your parametric limits!

The parametric elements of Domus.Cad are powerful, fast and creative design tools, but we do not believe that simply adding more parameters is the correct solution to architects’ difficulties. We believe that, at any given moment, you should be able to break out of parametric limits, in order to create freely and introduce a variety of elements into any one project.

Several Architectural modeling functions

ArchiCad vs. Domus.Cad

There are some similarities between ArchiCad and Domus.Cad and many differences.

The most evident similarity between the two programs is the manner in which they are generally used when designing. That is, beginning in plan and progressing to other two-dimensional, and eventually, three-dimensional representations.

It may be easier, however, to point out differences. A very important Domus.Cad feature is automatic fusion. At first glance, it may seem a simple joining of lines but it actually does much more. It allows the user to freely move, attach, detach, or combine elements, as well as the possibility to look at a group of elements as a single object.

Another important difference is the philosophy concerning the implementation of other software for completion of the various phases of architectural and engineering work. ArchiCad's combines many phases of the work in one monolithic program. While it includes certain characteristics of many of the more sofisticated elaborations (quantity estimates, 3D modeling, technical views, and photorealistic rendering), at the same time, it requires another program, PlotMaker, for basic, necessary functions such as 3D view modification, paging, and plotting. Domus.Cad, on the other hand, includes all the basics, containing within itself all the necessary tools for completing construction documents and drawings, then serves as the central point of an entire series of specialized programs, created by Interstudio and other companies, each producing their own state-of-the-art elaborations.

Below are some of the differences between ArchiCad and Domus.Cad. This is only a partial list; we plan to improve the table with more items in the future (updated 01/01/2000).

Feature Domus.Cad ArchiCad
Wall Fusion Uses the fusion concept to join and combine multiple walls. Walls are fused automatically when the distance between their axes is less than the set attach maximum distance. Fusion allows walls to be detached (then reattached if desired), deleted, and even moved between other walls. It is possible to model the walls and build complex shapes, recognized as unique, distinct objects. Fusion permits the user to begin a project more freely without knowing exactly what the final result will be and to move, delete, and combine walls and other elements quikly and easy. Uses a snap function which requires precise positioning of the cursor on the wall to be joined. It is not possible to join more then four walls in the same node or build complex shapes (where several walls may converge on the same point). It is more difficult to move or delete parts of a wall. Exact measures must be used from the start and all successive modifications require more time to complete than in Domus.Cad.
 Cavity Walls Includes no automatic function for creating cavity and composite walls. Automatic fusion allows you to reach results easily, but requires more work than in ArchiCad. Composite walls are drawn automatically according to defined parameters.
 Library Objects Library objects are created by grouping drawn elements and saving the group as a object. They are not parametric but it is possible to change objects parametrically using the parametric stretching function. Objects are defined by the GDL (Graphic Description Language). GDL allows building of very complex parametric objects, but the work required is more adapted to a software developer than to an architect.
 Modeling There are many elements for extrusions, hole punching, modeling wall and slab parts that allow you to create architectural objects with Domus.Cad without having to use other programs. It is also possible, however, to use AND modify objects created in other modeling applications. You have to use GDL to create complex objects. Objects created with other applications may be used .
Paging, Printing, & Plotting An internal function allows the layout to be composed by positioning the various project elements (plans, elevations, axons, perspectives, etc.) on the sheet. Once ready, the layout may be immediatly plotted or printed.  All drawings must be exported to PlotMaker for layout, plotting, and printing.
 3D Views

Automatically generates vectoral 3D views (sections, elevations, axons and perspectives). Partial or extruded images are easily created. QuickDraw 3D is used to create raster rendered views, using QuickDraw 3D's accelerated generation and illumination structure.

Automatically generated vectorial views may be modified directly in Domus.Cad. QuickDraw 3D allows interactive rendering - if the 3D View window is active, all modifications in plan are reflected immediatly in the 3D view.

Does not support textures.

Automatically generates vectorial and raster 3D views, but creating partial or extruded images is more difficult than in Domus.Cad. Generation time is slower because QuickDraw 3D technology is not used.

Rendered views must be regenerated to check modifications.

Supports textures.

 Walktroughs QuickDraw 3D technology permits the user to do walkthroughs in real time by interactively and simultaneously changing the view point and point of interest positions. A path must be predefined, after which a QuickTime movie following the path is produced. This can be a time consuming process.
 QuickTime VR Does not support QuickTime VR directly but through the use of plug-ins.  Supports QuickTime VR.

VectorWorks vs. Domus.Cad

VectorWorks is a general purpose CAD. VectorWorks Architect is a special version of VectorWorks with extra modules and extra libraries for architecture. Domus.Cad is an ARCHITECTURAL 3D CAD, it has very special functions and characteristics for architectural and civil engineering fields. In Domus.Cad elements like walls, floors, windows, doors, stairs, are software primitives that are used with the same simplicity as lines or circles, in VectorWorks there are methods for drawing elements that SEEM to be walls or a windows, but that are in reality just groups of 3D faces, NOT true architectural elements, making things much more complicated and harder to control.

Below are some of the basic differences between Vectorworks and Domus.Cad (updated 01/01/2000)

Feature Domus.Cad VectorWorks
Wall Fusion Domus.Cad uses the fusion concept to join and combine walls. Walls are fused automatically when the distance between their axes is less than the set attach maximum distance. Fusion allows walls to be detached (then reattached if desired), deleted, and even moved between other walls. It is possible to model the walls and build complex shapes, recognized as unique, distinct objects. This renders the modeling process MUCH easier and MUCH faster. This is very important for your kind of work. There is no wall element per se. Walls are created with lines and surfaces. There is no wall fusion. It is not possible to build complex shapes (where several walls may converge on the same point). It is more difficult to move or delete parts of a wall. Exact measures must be used from the start and all successive modifications require more time to complete than in Domus.Cad.

 Drawing Modes

Domus.Cad has 2D and 3D tools, but there are no separate 2D and 3D modes. This offers the designer a very unique way to work, creating a 3D model having a traditional 2D graphic representation, the concept being that if you want to draw in plan, it is faster and more intuitive to use wall, window and door tools (as opposed to segments and polygons), independently of whether or not you are interested in eventually having a 3D view. What you see in plan is simply the 2D representation of your 3D model. 2D tools can then be used to enhance the drawing with text and other elements to create complete construction documents. VectorWorks has two different drawing modes: 2D and 3D. You have to choose which mode you want to use before starting because the two modes are very different. The 2D mode is very good and easy to use, but the 3D mode is very complex. Try asking people you know that use VectorWorks if they are using it for 2D or for 3D. Our experience is that only 20% of VectorWorks/MiniCad users use 3D and only 10% use 3D heavily. They usually start with 2D functions and use VectorWorks as a 2D CAD. When they decide to use the 3D functions they realize they have to practically learn a new program.
 3D Views

Generates static vectorial 3D views (perspectives, axons) and, in addition, also displays a dynamic 3D view showing what is happening to the design interactively in real time. Each time you insert, modify or delete an element, the 3D view is updated in real time to reflect the change, allowing simultaneous control of the model in both plan AND 3D view. This saves time because you're not required to go back and forth between the plan and 3D view and regenerate the view each time.

The 3D View also allows the user to do walkthroughs in real time by interactively and simultaneously changing the view point and point of interest positions by mouse, keyboard or numeric values. You can also section through the project moving the section plane with the mouse, this is a great tool for a quick control of the model, outside and inside. No other 3D Cad allows a 3D dynamic and interactive control of the project as Domus.Cad.

Creates only 3D views that must be regenerated to view modifications.

 Printing & Plotting

An internal function allows direct multiple-sheet paging of project elements (plans, elevations, axons, perspectives, etc.). Layout takes place directly on the sheets. It's possible to page elements of both the open document and elements from hard disk. Once ready, the layout may be immediately plotted or printed.

Domus.Cad has an internal driver to plot on large format plotters (DMPL, HP-GL and HP-GL/2 plotter language) and supports external drivers

Sheets must be layed out on drawing layers in a less intuitive and less efficient way.

VectorWorks requires an external driver to plot

All CADs seem the same, but there is one that is more similar than the others and at the same time very different. It's similar because it has all the same tools as even the most complete CAD, and different, very different, because it has exclusive functions and tools that promise to revolutionize todays designing methods.

Architectural CAD for Architectural design, 3D modeling and rendering.

DigiCad 3D

Architectural photogrammetry and mapping

Read about DigiCad 3D and

download afree trial demo from the
DigiCad 3D product page.

Free Downloads

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Register as beta-tester and Download Domus.Cad 13 for Mac Os X. A Windows version very soon!

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Price


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ARTICLES

Crazy Parameters
How to deal with the crazy parameters of the 'Old World' buildings

Comparing CAD Programs
To see how Domus.Cad compares to some other CAD programs on the market, see our helpful article on.

Solutions
Solutions for Architecture and Landscape Architecture

SUPPORT

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