API Reference > imodeljs-frontend > Tools > LookViewTool LookViewTool Class A tool that performs the look operation Extends ViewManip Methods Name Description constructor(vp: ScreenViewport, oneShot: boolean = false, isDraggingRequired: boolean = false): LookViewTool onReinitialize(): void Inherited methods Name Inherited from Description applyToolSettingPropertyChange(_updatedValue: ToolSettingsPropertySyncItem): boolean InteractiveTool Used to receive property changes from UI. beginDynamicUpdate(): void ViewTool beginDynamics(): void InteractiveTool Call to initialize dynamics mode. changeLocateState(enableLocate: boolean, enableSnap?: false | true, cursor?: string, coordLockOvr?: CoordinateLockOverrides): void InteractiveTool Helper method to keep the view cursor, display of locate circle, and coordinate lock overrides consistent with AccuSnap.isLocateEnabled and AccuSnap.isSnapEnabled. changeViewport(vp?: ScreenViewport): void ViewManip decorate(context: DecorateContext): void ViewManip decorateSuspended(_context: DecorateContext): void InteractiveTool Called to allow a suspended tool to display non-element decorations in overlay mode. endDynamicUpdate(): void ViewTool endDynamics(): void InteractiveTool Call to terminate dynamics mode. enforceZUp(pivotPoint: Point3d): boolean ViewManip exitTool(): void ViewTool Do not override. filterHit(_hit: HitDetail, _out?: LocateResponse): Promise<LocateFilterStatus> InteractiveTool Invoked to allow tools to filter which elements can be located. getCurrentButtonEvent(ev: BeButtonEvent): void InteractiveTool Fill the supplied button event from the current cursor location. getDecorationGeometry(_hit: HitDetail): GeometryStreamProps | undefined InteractiveTool Called to allow snapping to pickable decoration geometry. getToolTip(_hit: HitDetail): Promise<HTMLElement | string> InteractiveTool Invoked before the locate tooltip is displayed to retrieve the information about the located element. initLocateElements(enableLocate: boolean = true, enableSnap?: false | true, cursor?: string, coordLockOvr?: CoordinateLockOverrides): void InteractiveTool Helper method for tools that need to locate existing elements. isCompatibleViewport(_vp: ScreenViewport, _isSelectedViewChange: boolean): boolean InteractiveTool isPointVisible(testPt: Point3d): boolean ViewManip Determine whether the supplied point is visible in this Viewport. isValidLocation(_ev: BeButtonEvent, _isButtonEvent: boolean): boolean InteractiveTool lensAngleMatches(angle: Angle, tolerance: number): boolean ViewManip onCleanup(): void ViewManip onDataButtonDown(ev: BeButtonEvent): Promise<EventHandled> ViewManip onDataButtonUp(_ev: BeButtonEvent): Promise<EventHandled> ViewManip onDynamicFrame(_ev: BeButtonEvent, _context: DynamicsContext): void InteractiveTool Called to allow Tool to display dynamic elements. onInstall(): boolean InteractiveTool Override to execute additional logic when tool is installed. onKeyTransition(wentDown: boolean, keyEvent: KeyboardEvent): Promise<EventHandled> ViewManip onMiddleButtonDown(_ev: BeButtonEvent): Promise<EventHandled> InteractiveTool Invoked when the middle mouse button is pressed. onMiddleButtonUp(_ev: BeButtonEvent): Promise<EventHandled> InteractiveTool Invoked when the middle mouse button is released. onModifierKeyTransition(wentDown: boolean, modifier: BeModifierKeys, event: KeyboardEvent): Promise<EventHandled> ViewManip onMouseEndDrag(ev: BeButtonEvent): Promise<EventHandled> ViewManip onMouseMotion(ev: BeButtonEvent): Promise<void> ViewManip onMouseStartDrag(ev: BeButtonEvent): Promise<EventHandled> ViewManip onMouseWheel(inputEv: BeWheelEvent): Promise<EventHandled> ViewManip onPostInstall(): void ViewManip onResetButtonDown(_ev: BeButtonEvent): Promise<EventHandled> InteractiveTool Invoked when the reset button is pressed. onResetButtonUp(_ev: BeButtonEvent): Promise<EventHandled> ViewTool onSelectedViewportChanged(_previous: ScreenViewport | undefined, _current: ScreenViewport | undefined): void InteractiveTool Called when active view changes. onSuspend(): void InteractiveTool Notification of a ViewTool or InputCollector starting and this tool is being suspended. onTouchCancel(ev: BeTouchEvent): Promise<void> ViewManip onTouchComplete(ev: BeTouchEvent): Promise<void> ViewManip onTouchEnd(ev: BeTouchEvent): Promise<void> ViewManip onTouchMove(ev: BeTouchEvent): Promise<void> ViewManip onTouchMoveStart(ev: BeTouchEvent, startEv: BeTouchEvent): Promise<EventHandled> ViewManip onTouchStart(ev: BeTouchEvent): Promise<void> ViewManip onTouchTap(ev: BeTouchEvent): Promise<EventHandled> ViewManip onUnsuspend(): void InteractiveTool Notification of a ViewTool or InputCollector exiting and this tool is being unsuspended. parseAndRun(..._args: string[]): boolean Tool Run this instance of a tool using a series of string arguments. processFirstPoint(ev: BeButtonEvent): boolean ViewManip processPoint(ev: BeButtonEvent, inDynamics: boolean): boolean ViewManip provideToolAssistance(mainInstrKey: string, additionalInstr?: ToolAssistanceInstruction[]): void ViewManip run(..._args: any[]): boolean ViewTool setCameraLensAngle(lensAngle: Angle, retainEyePoint: boolean): ViewStatus ViewManip setTargetCenterWorld(pt: Point3d, lockTarget: boolean, saveTarget: boolean): void ViewManip Set the center of rotation for rotate handle. supplyToolSettingsProperties(): ToolSettingsPropertyRecord[] | undefined InteractiveTool Used to supply list of properties that can be used to generate ToolSettings. syncToolSettingsProperties(syncData: ToolSettingsPropertySyncItem[]): void InteractiveTool Called by tool to synchronize the UI with property changes made by tool. testDecorationHit(_id: string): boolean InteractiveTool Called to support operations on pickable decorations, like snapping. updateTargetCenter(): void ViewManip fitView(viewport: ScreenViewport, animateFrustumChange: boolean, marginPercent?: MarginPercent): void Static ViewManip getDefaultTargetPointWorld(vp: Viewport): Point3d Static ViewManip getFocusPlaneNpc(vp: Viewport): number Static ViewManip register(namespace?: I18NNamespace, i18n?: I18N): void Static Tool Register this Tool class with the ToolRegistry. showPrompt(prompt: string): void Static ViewTool translate(val: string): any Static ViewTool zoomToAlwaysDrawnExclusive(viewport: ScreenViewport, animateFrustumChange: boolean, marginPercent?: MarginPercent): Promise<boolean> Static ViewManip Properties Name Type Description iconSpec Static string toolId Static string Inherited properties Name Type Inherited from Description description Accessor ReadOnly string Tool Get the localized description string from this Tool's class description Accessor StaticReadOnly string Tool Get the localized description for this Tool class. This returns the value of "tools." + this.toolId + ".description" fromits registered Namespace (e.g. "en/MyApp.json"). If that key is not in the localization namespace,Tool.flyover is returned. englishKeyin Accessor StaticReadOnly string Tool Get the English keyin string for this Tool class. This returns the value of "tools." + this.toolId + ".keyin" fromits registered Namespace (e.g. "en/MyApp.json"). flyover Accessor ReadOnly string Tool Get the localized flyover string from this Tool's class flyover Accessor StaticReadOnly string Tool Get the localized flyover for this Tool class. This returns the value of "tools." + this.toolId + ".flyover" fromits registered Namespace (e.g. "en/MyApp.json"). If that key is not in the localization namespace,Tool.keyin is returned. frustumValid boolean ViewManip handleMask ConstructorProperty number ViewManip hidden Static boolean Tool If true, this Tool will not appear in the list from ToolRegistry.getToolList. i18n Static I18N Tool The internationalization services instance used to translate strings from the namespace. iconSpec Accessor ReadOnly string Tool Get the iconSpec from this Tool's class. inDynamicUpdate boolean ViewTool inHandleModify boolean ViewManip isDragging boolean ViewManip isDraggingRequired ConstructorProperty boolean ViewManip isDynamicsStarted Accessor ReadOnly boolean InteractiveTool Call to find out if dynamics are currently active. isZUp Accessor ReadOnly boolean ViewManip keyin Accessor ReadOnly string Tool Get the localized keyin string from this Tool's class keyin Accessor StaticReadOnly string Tool Get the localized keyin string for this Tool class. This returns the value of "tools." + this.toolId + ".keyin" fromits registered Namespace (e.g. "en/MyApp.json"). maxArgs Accessor StaticReadOnly number | undefined Tool The maximum number of arguments allowed by Tool.parseAndRun, or undefined if there is no maximum.If subclasses override Tool.parseAndRun, they should also override this method to indicate the maximumnumber of arguments their implementation expects. minArgs Accessor StaticReadOnly number Tool The minimum number of arguments allowed by Tool.parseAndRun. If subclasses override Tool.parseAndRun, they should alsooverride this method to indicate the minimum number of arguments their implementation expects. UI controls can usethis information to ensure the tool has enough information to execute. namespace Static I18NNamespace Tool The I18NNamespace that provides localized strings for this Tool. nPts number ViewManip oneShot ConstructorProperty boolean ViewManip receivedDownEvent boolean InteractiveTool Used to avoid sending tools up events for which they did not receive the down event. targetCenterLocked boolean ViewManip targetCenterValid boolean ViewManip targetCenterWorld Point3d ViewManip toolId Accessor ReadOnly string Tool Get the toolId string for this Tool class. This string is used to identify the Tool in the ToolRegistry and is used to localizethe keyin, description, etc. from the current locale. viewport ConstructorProperty undefined | ScreenViewport ViewTool Defined in core/frontend/src/tools/ViewTool.ts Line 2436 Last Updated: 13 June, 2024