# VTK 3D Viewer

VTK 3D viewer is the default viewer for Mesh Module, allowing to visualize meshes. It is also used in Post-Pro module for all 3D presentations except for Gauss Points.

The functionalities of VTK viewer are available via its Viewer Toolbar. Buttons marked with small downward triangles have extended functionality which can be accessed by locking on them with left mouse button.

- Dump View - exports an object from the viewer in bmp, png, jpg or jpeg image format.

- Show/Hide Trihedron - shows or hides coordinate axes.

- Fit all - allows to select a point to be the center of a scene representing all displayed objects in the visible area.

- Fit area - resizes the view to place in the visible area only the contents of a frame drawn with pressed left mouse button.

- Zoom - allows to zoom in and out.

- Panning - if the represented objects are greater that the visible area and you don't wish to use Fit all functionality, click on this button and you'll be able to drag the scene to see its remote parts.

- Global panning - represents all displayed objects in the visible area.

- Rotation - allows to rotate the selected object using the mouse.

- These buttons orientate the scene strictly about coordinate axes.

- Reset - restores the default position (isometric) of objects in the scene.

- Scaling - represents objects deformed (stretched or stuffed) along the axes of coordinates

- Graduated axes - allows to define parameters of axes and graduate them.

- Axis name

- Is visible - if checked the axis name is displayed in the viewer.

- Name - allows to redefine the name of the axis.

- Font - allows to define color and properties of the font of axis name.

- Labels

- Is visible - if checked the labels are displayed in the viewer.

- Number - allows to define the number of labels.

- Offset - allows to define the distance between labels.

- Font - allows to define color and properties of the font of labels names.

- Tick marks

- Is visible - if checked the tick marks are displayed in the viewer.

- Length - allows to define the length of tick marks

- Is visible if checked the axis is displayed in the viewer.