com.openinventor.inventor.drawers

Class SoLassoScreenDrawer

java.lang.Object

com.openinventor.inventor.Inventor

com.openinventor.inventor.misc.SoBase

com.openinventor.inventor.fields.SoFieldContainer

com.openinventor.inventor.nodes.SoNode

com.openinventor.inventor.drawers.SoScreenDrawer

com.openinventor.inventor.drawers.SoPolyLineScreenDrawer

com.openinventor.inventor.drawers.SoLassoScreenDrawer

All Implemented Interfaces:

SafeDisposable

public class SoLassoScreenDrawer
extends SoPolyLineScreenDrawer

Interactively draw a lasso in normalized screen space. This class can be used to interactively draw a lasso (freeform shape) on screen.

When the lasso is finished, an event is raised to notify the application (see SoPolyLineScreenDrawer.onFinish ). Points are returned as normalized coordinates in the range -1..1, which is conveniently the default view volume for an SoOrthographicCamera node.

The line color and simplification threshold are specified by fields in the parent class SoPolyLineScreenDrawer.

Please see SoPolyLineScreenDrawer for general notes and code example.

Lasso specific notes:

• The simplificationThreshold field does apply to this node.
• If user finishes a lasso, then the next click will automatically clear the polyline (begin a new lasso).

USAGE

• Press left mouse and drag to draw the lasso.
• Release to finish the lasso.
• Press Escape to cancel construction of the lasso.

File format/default:

LassoScreenDrawer {

point	[]
color	1 0 0
simplificationThreshold	5
isClosed	true

}

See also:

SoEllipseScreenDrawer, SoPolyLineScreenDrawer, SoPolygonScreenDrawer, SoRectangleScreenDrawer

Nested Class Summary

Nested classes/interfaces inherited from class com.openinventor.inventor.drawers.SoPolyLineScreenDrawer

SoPolyLineScreenDrawer.EventArg

Nested classes/interfaces inherited from class com.openinventor.inventor.Inventor

Inventor.ConstructorCommand

Field Summary

Fields inherited from class com.openinventor.inventor.drawers.SoPolyLineScreenDrawer

color, doCCW, isClosed, onFinish, point, simplificationThreshold

Fields inherited from class com.openinventor.inventor.drawers.SoScreenDrawer

sceneGraph

Fields inherited from class com.openinventor.inventor.Inventor

VERBOSE_LEVEL, ZeroHandle

Constructor Summary

Constructors

Constructor and Description
SoLassoScreenDrawer() Constructor.

Method Summary

Methods inherited from class com.openinventor.inventor.drawers.SoPolyLineScreenDrawer

clear, setFinishCallback

Methods inherited from class com.openinventor.inventor.nodes.SoNode

affectsState, callback, copy, copy, distribute, doAction, getAlternateRep, getBoundingBox, getByName, getMatrix, getPrimitiveCount, getRenderUnitID, GLRender, GLRenderBelowPath, GLRenderInPath, GLRenderOffPath, grabEventsCleanup, grabEventsSetup, handleEvent, isBoundingBoxIgnoring, isOverride, pick, rayPick, search, setOverride, touch, write

Methods inherited from class com.openinventor.inventor.fields.SoFieldContainer

copyFieldValues, copyFieldValues, enableNotify, fieldsAreEqual, get, getAllFields, getEventIn, getEventOut, getField, getFieldName, hasDefaultValues, isNotifyEnabled, set, setToDefaults

Methods inherited from class com.openinventor.inventor.misc.SoBase

dispose, getEXTERNPROTO, getName, getPROTO, isDisposable, isSynchronizable, setName, setSynchronizable

Methods inherited from class com.openinventor.inventor.Inventor

getAddress, getNativeResourceHandle, startInternalThreads, stopInternalThreads

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SoLassoScreenDrawer

public SoLassoScreenDrawer()

Constructor.