SoSelection2

InventorModule

genre	Interaction
author	MeVis Medical Solutions AG
package	MeVisLab/Standard
dll	SoUtils
definition	utils.def
see also	SoSelection, SoPicking, SoSeparator, SoGroup
keywords	picking, normal, object, world, coordinates

Purpose

The module SoSelection2 provides picking (selection) information in an Open Inventor scene.

This module is an extended SoSelection node. It implements a callback function to receive picking information from points which were selected on any child node.

Tips

This module has been partly superseded by SoPicking.

Windows

Default Panel

Input Fields

child

name: child, type: SoNode

Output Fields

self

name: self, type: SoNode

Parameter Fields

Field Index

Normal (normalVoxel): Vector3	Texture3 (textureVoxel3): Vector3
Normal (normalWorld): Vector3	Texture3 (textureWorld3): Vector3
Number of Selected Objects: Integer	texture4 (textureVoxel4): Vector4
Object (objectVoxel): Vector3	Texture4 (textureWorld4): Vector4
Object (objectWorld): Vector3
Pick Matching: Bool
Policy: Enum
Select Only On Click: Bool

Visible Fields

Policy

name: policy, type: Enum, default: SHIFT

Defines the selection policy: how to react on left click.

Values:

Title	Name	Description
​Single	​SINGLE	​Clicking selects the object below the mouse cursor, if there is no object, no object is selected.
​Toggle	​TOGGLE	​Clicking toggles the selection for the object below the mouse cursor (if any).
​Shift	​SHIFT	​Clicking without the shift key pressed behaves like SINGLE policy, with shift key the TOGGLE policy is used.

Select Only On Click

name: selectOnlyOnClick, type: Bool, default: FALSE

If checked, only perform selection on a single click, and not after the mouse has been dragged from the initial mouse down position. This serves a similar purpose as Pick Matching but mixes better with other interactions.

Number of Selected Objects

name: numberOfSelectedObjects, type: Integer, persistent: no

Shows the number of objects selected (note the Policy setting, which determines if more than one object can be selected).

Object (objectVoxel)

name: objectVoxel, type: Vector3, persistent: no, deprecated name: ObjectCoords

Shows the coordinate of the picked point in voxel space.

Object (objectWorld)

name: objectWorld, type: Vector3, persistent: no, deprecated name: WorldCoords

Shows the coordinate of the picked point in world space.

Normal (normalVoxel)

name: normalVoxel, type: Vector3, persistent: no, deprecated name: ObjectNormal

Shows the normal at the picked position in voxel space.

Normal (normalWorld)

name: normalWorld, type: Vector3, persistent: no, deprecated name: WorldNormal

Shows the normal at the picked position in world space.

Texture3 (textureVoxel3)

name: textureVoxel3, type: Vector3, persistent: no, deprecated name: ObjectTextureCoords3

Shows the texture coordinate of the picked position in voxel space as a Vector3.

Texture3 (textureWorld3)

name: textureWorld3, type: Vector3, persistent: no, deprecated name: WorldTextureCoords3

Shows the texture coordinate of the picked position in world space as a Vector3.

texture4

name: textureVoxel4, type: Vector4, persistent: no, deprecated name: ObjectTextureCoords4

Shows the texture coordinate of the picked position in voxel space as a Vector4.

Texture4

name: textureWorld4, type: Vector4, persistent: no, deprecated name: WorldTextureCoords4

Shows the texture coordinate of the picked position in world space as a Vector4.

Pick Matching

name: pickMatching, type: Bool, default: FALSE, deprecated name: PickMatching

If checked, the selection is performed by just pressing the mouse button.

Otherwise, the selection if performed by pressing and releasing the mouse button.