GVRPickResultInfo

MLModule

genre	Octree
author	MeVis Medical Solutions AG
package	MeVisLab/Standard
dll	MLGVR
definition	MLGVR.def
see also	SoGVRVolumeRenderer, SoGVRPickResult, GVRPickResultToCurve
keywords	octree

Purpose

The module GVRPickResultInfo allows for receiving detailed information about the pick result of a SoGVRPickResult module.

It allows for the introspection of all volume voxel profiles along a cast ray, including additional parameters such as the colors of the voxels, the Voxel Original Value, or the mask/tag volume, among others.

It currently supports picking by alpha threshold, minimum intensity, and maximum intensity along the ray, both on the main volume or on secondary/transformed volumes.

The voxels along the ray can be iterated using the Current Voxel field, so it is possible to use scripting to find specific values along the ray.

Windows

Default Panel

Input Fields

inPickResult

name: inPickResult, type: GVRPickResult(MLBase)

The GVRPickResult Base object which can be optained from a SoGVRPickResult.

Parameter Fields

Field Index

availableVolumeNames: String	Ray End Position: Vector3	Voxel Tag Value: Integer
Current Voxel: Integer	Ray Start Position: Vector3	Voxel World Position: Vector3
isValid: Bool	Voxel Alpha: Float
maxVoxel: Integer	Voxel Color: Color
Pick Alpha Threshold: Float	Voxel Inside Mask: Bool
Pick Mode: Enum	Voxel Internal Intensity: Integer
Pick Volume Name: String	Voxel Mask Value: Integer
Ray Direction: Vector3	Voxel Original Value: Double

Visible Fields

Pick Volume Name

name: pickVolumeName, type: String

Sets a name of a volume and uses the main volume if no name is given.

Set this to the name of a secondary/transformed volume to see the curves of that volume.

Ray Start Position

name: rayStartPosition, type: Vector3, persistent: no

Shows the world start position of the ray.

The ray starts on the hit bounding box of the volume that is truncated by clipping planes if clipping is on.

Ray End Position

name: rayEndPosition, type: Vector3, persistent: no

Shows the world end position of the ray.

The ray ends on the hit bounding box of the volume that is truncated by clipping planes if clipping is on.

Ray Direction

name: rayDirection, type: Vector3, persistent: no

Shows the normalized world direction of the ray.

Pick Mode

name: pickMode, type: Enum, default: AlphaThreshold

Defines the picking mode.

Depending on this mode, the value of Current Voxel might be changed.

Values:

Title	Name
​Alpha Threshold	​AlphaThreshold
​Minimum Intensity	​MinimumIntensity
​Maximum Intensity	​MaximumIntensity

Pick Alpha Threshold

name: pickAlphaThreshold, type: Float, default: 0.2

Sets the alpha threshold for picking if Pick Mode is set to Alpha Threshold.

Current Voxel

name: currentVoxel, type: Integer, default: 0, minimum: -1, maximum: :field:`maxVoxel`

Sets the index of a voxel along the pick ray.

On an interactive pick, this field is set to the index of the voxel that meets the picking criteria and updates when the criteria change.

By manually setting this index, an iteration along the picking ray can be performed.

Voxel Original Value

name: voxelOriginalValue, type: Double, persistent: no

Shows the value of the current voxel.

Voxel Color

name: voxelColor, type: Color, persistent: no

Shows the LUT color of the current voxel.

Voxel Alpha

name: voxelAlpha, type: Float, persistent: no

Shows the LUT alpha value of the current voxel.

Voxel Internal Intensity

name: voxelInternalIntensity, type: Integer, persistent: no

Shows the internal intensity value of the current voxel.

Voxel Mask Value

name: voxelMaskValue, type: Integer, persistent: no

Shows the mask value of the current voxel.

Voxel Tag Value

name: voxelTagValue, type: Integer, persistent: no

Shows the tag value of the current voxel.

Voxel Inside Mask

name: voxelInsideMask, type: Bool, persistent: no

Shows whether the current voxel is inside the mask.

Voxel World Position

name: voxelWorldPosition, type: Vector3, persistent: no

Shows the world position of the current voxel.

Hidden Fields

isValid

name: isValid, type: Bool, persistent: no

availableVolumeNames

name: availableVolumeNames, type: String, persistent: no

maxVoxel

name: maxVoxel, type: Integer, default: 0