Class SoLassoScreenDrawer
- java.lang.Object
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- com.openinventor.inventor.Inventor
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- com.openinventor.inventor.misc.SoBase
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- com.openinventor.inventor.fields.SoFieldContainer
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- com.openinventor.inventor.nodes.SoNode
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- com.openinventor.inventor.drawers.SoScreenDrawer
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- com.openinventor.inventor.drawers.SoPolyLineScreenDrawer
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- com.openinventor.inventor.drawers.SoLassoScreenDrawer
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- 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 anSoOrthographicCamera
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).
- SbEventHandlers:
- OnStart : Triggered on LeftMouseDown input event.
- OnMove : Triggered on MouseMove input events (after Start).
- OnFinish : Triggered on LeftMouseUp input event.
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
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Nested Class Summary
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Nested classes/interfaces inherited from class com.openinventor.inventor.drawers.SoPolyLineScreenDrawer
SoPolyLineScreenDrawer.EventArg
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Nested classes/interfaces inherited from class com.openinventor.inventor.nodes.SoNode
SoNode.RenderModes
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Nested classes/interfaces inherited from class com.openinventor.inventor.Inventor
Inventor.ConstructorCommand
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Field Summary
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Fields inherited from class com.openinventor.inventor.drawers.SoPolyLineScreenDrawer
color, doCCW, isClosed, linePattern, linePatternScaleFactor, lineWidth, onFinish, onMove, onStart, point, simplificationThreshold
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Fields inherited from class com.openinventor.inventor.drawers.SoScreenDrawer
sceneGraph
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Fields inherited from class com.openinventor.inventor.Inventor
VERBOSE_LEVEL, ZeroHandle
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Constructor Summary
Constructors Constructor Description SoLassoScreenDrawer()
Constructor.
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Method Summary
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Methods inherited from class com.openinventor.inventor.drawers.SoPolyLineScreenDrawer
clear
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Methods inherited from class com.openinventor.inventor.drawers.SoScreenDrawer
reset
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Methods inherited from class com.openinventor.inventor.nodes.SoNode
affectsState, callback, copy, copy, distribute, doAction, getAlternateRep, getBoundingBox, getByName, getMatrix, getPrimitiveCount, getRenderEngineMode, getRenderUnitID, GLRender, GLRenderBelowPath, GLRenderInPath, GLRenderOffPath, grabEventsCleanup, grabEventsSetup, handleEvent, isBoundingBoxIgnoring, isOverride, pick, rayPick, search, setOverride, touch, write
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Methods inherited from class com.openinventor.inventor.fields.SoFieldContainer
copyFieldValues, copyFieldValues, enableNotify, fieldsAreEqual, get, getAllFields, getEventIn, getEventOut, getField, getFieldName, hasDefaultValues, isNotifyEnabled, set, setToDefaults
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Methods inherited from class com.openinventor.inventor.misc.SoBase
dispose, getName, isDisposable, isSynchronizable, setName, setSynchronizable
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Methods inherited from class com.openinventor.inventor.Inventor
getNativeResourceHandle
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