CAD

This section describes the CAD interface and related operations.

Computer Aided Design (CAD) is one of the important features provided in this software.

The Composite Viewer is used as the main window to perform CAD tasks. In addition, the Objects Tree clearly shows the hierarchical relationships between objects.

CAD

Interfaces

The interfaces related to modeling are shown in the figure below:

The marked items in the above figure are explained as follows:

Number	Name	Description
1	Composite viewer	This is the Comprehensive viewer, which includes the structural view, toolbar, and coordinate system icons.
2	Add structures	This is the Structure library, which allows you to add structures or structure groups. See Structure and Structure Group for details.
3	Script file editor	This is the Script editor, which allows you to edit script programs. See Script for details.
4	Objects tree	This is the Objects tree, which contains a tree structure composed of structures, solvers, sources, monitors, etc. See Objects Tree for details.
5	View	This is the View interface, which enables view settings (color, depth test, etc.).
6	Setting	This is the Setting interface, which can be used to define the unit, pulse normalization, and other parameters.

Operations

For the structure of an object, you are allowed to perform the following basic operations:

• Perspective change (①)
• Geometric parameters (②)
• Spatial parameters (③)
• Visual effects (④)

Perspective Change

For example, in the Composite Viewer window, you can perform different operations to manipulate and adjust a structure, such as panning, zooming, and view conversion. These operations can be achieved by clicking buttons on the toolbar, as well as using mouse shortcuts and touchpad shortcuts.

	Translate	Rotate	Scale	Select
mouse	drag	drag
touchpad	shift+	alt+ or option+	or	or

Regardless of the method of operation, please note the change of the actual mouse icon displayed as shown below. For more precise operations, you can modify it on the geometric and spatial parameters page.

Geometric Parameters

Right-click the desired structure in the Objects Tree. Then you can edit the geometric parameters associated with the selected structure.

Spatial Parameters

Spatial operations on structures mainly include:

Translation

Rotation

• It is specified that the normal vector of the rotation plane is the rotation axis, and the rotation angle is expressed in degrees, and the angle range for rotation is arbitrary;
• In the case of setting multiple rotation axes, the model will be rotated by the specified angle according to the specified rotation axes in sequence.

Visual Effects

The visual effects of CAD models are displayed in the Composite Viewer Window. You can change the visual effects through the following operations:

Global Setting (View>View Options)

Name	Description
Orthographic projection	/
Color	Color setting, which allows you to specify the background color, boundary region color, etc.
Graphical rendering	This option is preselected by default.
Default opacity	The default value is 0.4.
Open graphical depth test	Enabling the depth test functionality.
Field image smoothing	/

Local Setting (Edit Structure Properties>Graphical Rendering)

• Detail points: allowing you to determine the display accuracy of the structure;

• Opacity: allowing you to determine the transparency of the structure.