The 3D view#

The 3D view shows the three slices where the crosshair is, a volume rendering of the main volume, a surface for each overlay, and the tractograms.

The 3D view: the T1's slices, its dimmed volume rendering and the surface of a mask of the lateral ventricles, seen from above

What it shows#

  • Volume rendering: the whole main volume, blended: each voxel adds a little colour and hides a little of what is behind it. The volume’s Opacity (3D) sets how much; at 0 the rendering is off and only the slices are left.

  • Slices (in the 3D section): the three slices of a volume or an overlay, drawn where they are.

  • Surface (in the 3D section): for an overlay, the surface where it crosses its threshold, such as the outline of a mask. An overlay shown as labels has none.

Tractograms are drawn as lines; FOD glyphs and peaks are drawn in the 2D views only.

The camera#

Mouse or key

Does

Drag

Turns the scene

Scroll, or pinch

Zooms

Shift+A

Looks from above

Shift+C

Looks from the front

Shift+S

Looks from the side

Shift+R

Resets the camera

Double click, the corner button, or 3

Fills the window with the 3D view, and back

The same positions are in View > 3D camera. The camera always looks at the centre of the images.

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