Faq

What is DigiCad 3D Used For?

DigiCad 3D's Dynamic Attachment Feature

How to eliminate perspective distortion from a building photo

• Import a photo
• Set scale and unit of measure
• Set the four origin attach points on the photo. The bottom-left point first, the top-left point second, after the top-right and the bottom-right. The Attach points are represented with red markers on the screen.
• Open the Destination Attach points dialog from the Trasnfrom menu
• Insert the real coordinates correspondent to the Destination Attach points. The reference system isn't important, it's sufficient that all the coordinates are in the same reference system (ex. the left corner of the building and the ground line). The Destination Attach points are represented with blue markers on the screen.
• Select the picture
• Choose Transform Picture from the Transform menu
• Choose resolution, number of colors and Opaque or Transparent option
• Click the Ok button

Is it possible to eliminate perspective distortion from a photo without any measured point?

How DigiCad 3D's Attach Functions from files Work

In the case of a dam, what is the best way to consider the hydraulic pressure on the upstream face?

Do you use a water bed which is above the ground surface (will this then compute the hydraulic load on the upstream face?) or do you use a trapezoidal load to represent the water?

It is possible to use two different methods depending on the result wanted.

First case:

We have a dam with water on one side (let's suppose on the right side). We want to verify the dam from right to left.

The best method is to consider a water stratum. A water stratum has 0 porosity, O cohesion coefficient, 0 Fi and 0 weight.

The water bed is on the top of this stratum.

The slide surfaces must continue inside the "water stratum" until the surface.

In this case Geo-Tec B considers the weight and the pressure of the water bed correctly.

In this case it isn't possible to apply the first method and it's necessary to consider the water as a triangular or trapezzoidal load on the terrain (to consider the effect of the water on the terrain surface) plus the water bed (to consider the effect of the pressure of the water inside the terrain).

There is a special case to simulate a quick emptying of a lake. It's possible to simulate this case deleting the loads on the surfaces and maintaining the water bed on the top level. This because some time is needed for the water inside of the terrain to come out and in the meantime the internal pressure of the water corresponds to the top level of the water bed.

How does grahic import work in Nonio C? Nonio C imports graphic images in several formats. The PICT import command uses QuickTime and can import all the graphic formats handled by the installed QuickTime Other methods to import an image in Nonio C are Copy and Past and Drag & Drop.

How does DXF import work in Nonio C? Nonio C imports single points,  polygons (in DXF Polyline), faces, which it inserts as points to eventually be united by breaklines. It does not import other elements, such as lines, text, circles, etc. The primary use of DXF importation in Nonio C is to import contour lines from maps and complete 3D models. If you want to import a drawing for other purposes (such as to serve as the base document for a survey project), it's better to import the document first to another program, for example DigiCad 3D, then to Nonio C using Copy and Paste or Drag and Drop.

How can imported images be used? Imported immages can be used for a number of objectives, among which some are listed below: - Digitalization of a map with contour lines - Superimposing a design on the survey - Superimposing a survey drawing on an aerial photo - Use of a design as a guide for infill or excavation - Comparison of the terrain model with the map - Comparison of the terrain model with map of property lines

How does Nonio C calculates the terrain model? Nonio C constructs a mathematical surface connecting points with line segments to construct triangles. The generation of triangles is also regulated by the maximum distance for triangulation entered in the Preferences dialog box, which requires the program to search for and construct triangles only among points falling between the set distance. For any number of points, there are several possibile ways in which they may be joined by triangulation. If the general guidelines given above are followed and a reasonable maximum distance for triangulation set, the generated model should represent closely the actual terrain conditions. When there are certain discontinuities in the surface, a more detailed modeling process is required. In these situations, connections can be somewhat ambiguous, even for a simple case involving only four points. If automatic triangulation is used in situations like the one above, it can cause erratic results. Nonio C offers the user the ability to impose breaklines (representing lines of discontinuity, such as ditches, ridges, or streets) from which the triangulation can then be completed automatically. The user can locally correct the automatic triangulation and Nonio C recalculate the modified model immediately and automatically.

When I insert a door or window in a wall, it creates a sized opening. this opening can be made transparent or coloured (in 3D view). To have a window or door frame, you need to create separate slab elements- as you have described to me previously. The door element is in essence a coloured vertical plan of minimum thickness. So does this mean that the insertion of a door or window is this in effect the same as the "punching hole in slab" function (and visa versa)? The window and door tools build a window/door without the frame, practically they make holes in the walls and, in this sense, they are similar to the "punching hole in slab" function. The main difference is that they are base elements and it's easier to handle a window then a hole in a slab. You can move, resize, deform, duplicate, copy-and paste etc. windows and doors while the only operation that you can do with a hole in a slab is changing vertixes. The vertical plane inside the windows is useful to give a first idea of the house. The commands Apply Object and Add Frame allow you to automatically add a window frame to the selected window openings. There are many ways to build doors and windows. Some months ago I showed you as draw a 3D window with slabs. This time I want to show you as to built simple frames with walls and windows. Follow the steps below. Let suppose we need a 170 x 170 cm window frame. - Draw a wall with l = 170 cm and h = 170 cm - Set a window with Sill = 10 and Height = 150 - Trace two windows in the wall   Select and group all in an object. You have the window frame.

I have created a single pitched roof for a rectangular 3-level building, but cannot find the right method for connecting the walls to the roof.  To make the walls match exactly the bottom part of the roof you must select all the walls and the roof and execute the command Adjust Walls on Roof from the Process menu. Follow the steps below:

• Click on the arrow and on the wall icons on palette #1
• Trace a selection rectangle including all the walls
• Click on the Floor/Slab/Roof icon
• Press the shift key and click on one of the edges of the roof. This extends the previous selection, so you have selected all the walls and one roof.
• Execute the command above

You have selected 2 or more roofs. Only one roof can be selected. The bottom of a wall is higher than the bottom of the roof. In this case it is geometrically impossible to complete the command.

How are objects, as in the library of object provide get made -ie so I can custom make an objects, such as wood fired heater, or louvred windows panel. The easiest way: 1) on a clean layer, create the object using the appropriate 2D and/or 3D tools (assigning whatever materials, etc.) 2) choose the Save Active Layer as Object from the Layers menu I usually find using extrusions and slab elements the easiest way to model objects, but it depends. For example, your louvred window: the frame is just a wall element with a window cut into it and the louvres are a simple inclined slab duplicated changing the z component. That's how all those shutters in the library were made. or 1) create the object on any layer 2) select the involved elements (if you hold down the Command key while you select, it selects ALL elements inside the rectangle, not only those of the activated type) 3) choose the Save Selection as Object command from the Edit menu

How to configure the photo to have it in scale when used? I have a similar problem with a vehicle that I managed to download - can't get it to scale...so it's unusable! You can select it and rescale with the Deformation command from the Process menu.

Is it possible to paste a 3D perspective onto a photo of landscape, in order to show the project's integration into its environment? There are several interesting dxf and dwg models that you can import in Domus.Cad. To superimpose a Domus.Cad rendering onto a photo in Domus.Cad follow the steps below:

• Import the photo in Domus.Cad
• Generate the rendering with a white background
• Save the rendering to a free layer
• Select the rendering image and choose the PictRot command from the Modules menu
• Set 0 rotation, million of colors, 72 dpi and white transparent. Confirm
• Now you can move the rendering onto the photo because the background is transparent.

Why do I see a blank screen instead of my drawing?! Below are some normal situations where you can see a blank page instead of your drawing: - The layers are disabled in the Layers dialog box - The screen scale is very large (look at the scale in the Window title) - The drawing is outside of the screen (double click on the House icon on the left-bottom corner of the window or execute the Autoscale command to make the drawing content fit the window box)

How do I draw in doors and windows so that they share the same mullion frame? One method could be as follows:

• Draw a large door opening equal to the width of the door base + the window base
• Inside the door opening, draw a slab with a Reference Ht and Thickness equal to your sill height.
• You can continue to add elements for window and door mullions to obtain the result you want.

How do you construct a roof slab, at say a 25 degree pitch, that is supported/buts up to a curved wall? (Sort of like a garret wall except in the opposite plane). I have thought of ways to do this, such as construct a rectangular slab and then cut it using the scissors tool and remove the unwanted section, but I don't know how. In Domus.Cad, there are two modeling tools which do this job easier and faster. The first allows you to cut or drill a slab with a curve/polygon. The second allows you to extrude a slab from a curve/polygon in any direction.

what modifications can you make to an object - eg if an object is an "I "beam can you lengthen it, make it deeper ? what are the limitations The following modifications are directly applicable to an object: - Rotation, by mouse or by value - Deforming in x,y,z directions. By mouse and value in x and y direction. Only by value in the z direction - Stretching in x and y direction - Changing the color - Changing the reference Ht - Cutting (with the Scissors tool) Deforming re-scales the object proportionally in any point. Stretching modifies the object only where it is crossed by a reference line. This allows to change a part of an object while the rest remains unchanged.

If I make the white background transparent, part of the white elements of construction also become transparent...and you can see cloudy bits through certain parts of the building. Can this be avoided? In this case place a little white rectangle between the background and the rendered image.