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Work with 3D models-territories

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Work with 3D models-territories

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Work with 3D models-territories

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VideoCAD can use not only 3D models of individual objects (people, cars, etc.), but also 3D models-territories (buildings, stadiums, airports, towns, etc.).

Within the 3D models-territories cameras and other 3D models can be placed.

 

Problem

 

There is a 3D model of the stadium. You need to place a camera in the room under the stands.

 

Order of work

 

       1. Loading the 3D model to VideoCAD

 

It is recommended to simplify the 3D model as much as possible before using it in VideoCAD by removing all unnecessary polygons. This will increase the speed and convenience of working with the model in VideoCAD.

 

1.1 Import the 3D Environment Model in one of three ways.

 

1.2 Stretch the 3D Models window by mouse to increase resolution of the projection.

 

 

       3. Making projection of the 3D model to display in the Graphics window

 

3.1 Switch to the Model. tab and mark Projection>Free (or switch to the Navi. tab and mark the Enable navigation checkbox).

3.2 With the help of the mouse and tools of 3D navigation reach the room under the stands, where a camera should be installed. You can examine the 3D model in details.

       Default mouse functions

 

On the left mouse button the Orbit  is assigned - moving  the mouse cursor with the left button pressed rotates the 3D model in the space (or rotates the virtual viewer around the 3D model);

 

Function of the left button can be changed.

 

On the middle mouse button the Move is assigned - moving 3D model in the field of view plane;

 

On the rotation of the mouse wheel the Zoom tool is assigned - wheel rotation zooms in or out the point in the 3D space, where the mouse cursor is.

 

Pressed Ctrl reduces step of zooming;

Step and direction of zooming by turning the mouse wheel can be changed widely using Navigation>Scale factor in the Options box .

 

On the right mouse button the Look around Look around  is assigned  - rotates the sight direction standing the virtual viewer stationary.

 

See more: Navigation.

 

 

 

3.3 Switch to the View tab,  then by changing value in the Height cutting>Top, cut a part of the model above the room, to make the room opened from above.

 

 

3.4 Switch to the Model. tab and mark Projection>Horizontal ( or switch to the Navi. tab and clear the Enable navigation checkbox). As a result you will see horizontal section of the 3D model with the room under the stands opened.

 

3.5 Switch to the View tab then using the tools on the tab achieve legibility of the room on the section. You can change direction and intensity of light, incline the projection a little, visualize edges, increase resolution, disable texture and use PiP to increase resolution of small area on big projection.

Mark the Shadows and Lock checkboxes.

 

 

3.6 Switch to the Model tab and click Save Projection. Close the 3D Models window.

 

In the future, you can change the projection of already placed 3D models many times, with cutting, highlighting the desired heights or areas of the 3D model.

 

       4. Placing the 3D model on the layout

 

4.1 Select the new 3D model in the menu on the Toolbar and place it by clicking in the Graphics area of the Graphics window. If necessary, scale the model on the Current construction parameter panel.

4.2 Zoom in and see on the projection location place for the camera. If the boundaries are not visible, modify the projection in the 3D Models window.

 

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       5. Creating a layout on the height of floor of the room

 

5.1 Open the 3D World. With the help of the mouse and tools of 3D navigation on Navi tab reach the room under the stands, where a camera should be installed.

5.2 Put the mouse cursor on the floor and memorize floor height (see image below).

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5.3 Go to Main Menu> Drawing> Layers. In the Layers box, click Add. Set the height of the new layer equals to the height of the floor and make the layer active.

 

 

5.4 Click OK.

 

       6. Placing cameras and 3D models on the created layer

 

Place cameras and 3D models in the Graphics window in the usual way, using the acquired projection as background.

 

To make 3D models don't shield cameras , mark the Graphics window>Main Menu >View>Cameras over constructions.

 

Cameras and construction will be placed on the active layer with the set height of the floor. Height of cameras and constructions will be counted from the height of the layer.

Shadows from the stadium walls will be taken into account.

 

You can simultaneously monitor the results in the form of projections in the Graphics window and 3D form in the 3D World.

 

If the 3D model is complicated, do not use shadows in the Graphics window when the 3D World is opened, close all unnecessary windows.

 

View area faces inside the 3D model in the 3D World

 

Active camera coverage inside the 3D model in the 3D World

View area projection in the Graphics window

Camera image model in the 3D Video

 

 

See also: Drawing>Import DXF/DWG background, Import of 3D models, Work with layers and multi-levels projects, Export 3D view areas to general 3D design software, Layers