Model tree (left)

Main_Views_3D_Model_Tree

The Model tree contains all available geometry parts listed in a tree structure, whereby their visibility can be switched on or off alternatively. All visible elements are exported, if the model is saved as IGES, STEP or STL.

Model tree structure

The model tree has 3 main sections:

1)	Section Components contains all components of the project with the following sub elements:

Impeller/Stator	Volute
Meridian	Spiral
Mean surface	Diffuser
Blade	Cut-water
CFD Setup	CFD Setup

3D_meridian

The meridian contains hub and shroud as well as a circular projection of the blade in a plane.

Each element can contain child elements, which can be made visible by opening the node in the model tree.

Each single element without child nodes can be visible () or invisible ().

Each single element with child nodes can have 3 states:

	All child nodes are selected
	No child node is selected
	Some child nodes are selected

2)	Section Geometry contains all basic geometrical types:

•

Points

•

Curves

•

Surfaces

•

Solids

This allows:

•	to make all objects of a certain geometrical type visible

•	to modify the display properties of all currently visible objects of a certain geometrical type

3)	Section Imports lists all imported parts (see below).

By right click on an item the imported part can be positioned or removed.

The z-axis is assumed as rotational axis. The imported part can be moved along the z-axis or rotated around it relative to its initial position.

Main_Views_3D_Import

Display properties

The elements selected in the tree are highlighted in the 3D view. The following attributes can be defined below:

	Wire frame display
	Shaded surface display
	Shaded surface display with edges or isocurves
	Material
	Color
	Transparency

The selection can be cleared by pressing the <Esc> key.

Model states

Model states contain the properties of all tree elements. Several model states can be defined.

	Select existing model state
	Save model state
	Rename selected model state
	Add new model state
	Delete selected model state

Three model states are predefined and cannot be modified:

•

"Default"

•	"Solids only": Only solids are visible

•	"Component colors": Every component is displayed with the color defined in the Components view

For performance reasons, model states do not contain the state of each individual 3D object, but only to the level of distinction between different geometrical types (points, curves, surfaces). Therefore, e.g. all faces that belong to a "solid faces" object share the same properties.

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