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Seedwidget programatic placement #3354

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30 changes: 17 additions & 13 deletions Sources/Widgets/Widgets3D/SeedWidget/behavior.js
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Original file line number Diff line number Diff line change
Expand Up @@ -22,11 +22,23 @@ export default function widgetBehavior(publicAPI, model) {
.worldCoords;
}

// Update the handle's center. Example:
// handle.setCenter([1,2,3]);
publicAPI.setCenter = (newCenter) => {
moveHandle.setOrigin(newCenter);
model._interactor.render();
};

publicAPI.startInteract = () => {
model._widgetManager.enablePicking();
publicAPI.grabFocus();
model._apiSpecificRenderWindow.setCursor('grabbing');
publicAPI.invokeStartInteractionEvent();
};

publicAPI.endInteract = () => {
publicAPI.loseFocus();
model._apiSpecificRenderWindow.setCursor('pointer');
model.widgetState.deactivate();
publicAPI.invokeEndInteractionEvent();
};

publicAPI.handleLeftButtonPress = (e) => {
Expand All @@ -38,12 +50,10 @@ export default function widgetBehavior(publicAPI, model) {

if (model.activeState === moveHandle) {
if (!moveHandle.getOrigin() && worldCoords) {
moveHandle.setOrigin(worldCoords);
publicAPI.setCenter(worldCoords);
}
}
model._isDragging = true;
model._apiSpecificRenderWindow.setCursor('grabbing');
publicAPI.invokeStartInteractionEvent();
publicAPI.startInteract();
return macro.EVENT_ABORT;
};

Expand All @@ -53,13 +63,8 @@ export default function widgetBehavior(publicAPI, model) {
return macro.VOID;
}
if (isPlaced()) {
model._widgetManager.enablePicking();
model._apiSpecificRenderWindow.setCursor('pointer');
model._isDragging = false;
model.activeState = null;
model.widgetState.deactivate();
publicAPI.endInteract();
}
publicAPI.invokeEndInteractionEvent();
return macro.EVENT_ABORT;
};

Expand All @@ -78,7 +83,6 @@ export default function widgetBehavior(publicAPI, model) {
moveHandle.setVisible(true);
model._isDragging = true;
model.activeState = moveHandle;
model._interactor.render();
};

publicAPI.loseFocus = () => {
Expand Down
18 changes: 14 additions & 4 deletions Sources/Widgets/Widgets3D/SeedWidget/example/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -58,8 +58,10 @@ renderer.resetCamera();

fullScreenRenderer.addController(controlPanel);

document.querySelector('#addWidget').addEventListener('click', () => {
widgetManager.releaseFocus(widget);
function createWidget(eventOrCenter = null) {
if (widgetHandle) {
widgetHandle.endInteract();
}
widget = vtkSeedWidget.newInstance();

// Important: set the manipulator of the widget to constrain movement to the actor
Expand All @@ -77,15 +79,23 @@ document.querySelector('#addWidget').addEventListener('click', () => {
// Start placement interaction
widget.placeWidget(cone.getOutputData().getBounds());
widgetHandle = widgetManager.addWidget(widget);
widgetManager.grabFocus(widget);
});
if (Array.isArray(eventOrCenter)) {
widgetHandle.setCenter(eventOrCenter);
} else {
widgetHandle.startInteract();
}
}

document.querySelector('#addWidget').addEventListener('click', createWidget);

document.querySelector('#removeWidget').addEventListener('click', () => {
const widgets = widgetManager.getWidgets();
if (!widgets.length) return;
widgetManager.removeWidget(widgets[widgets.length - 1]);
});

createWidget([0.5, 0, 0]);

// -----------------------------------------------------------
// globals
// -----------------------------------------------------------
Expand Down
19 changes: 18 additions & 1 deletion Sources/Widgets/Widgets3D/SeedWidget/index.d.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -20,9 +20,26 @@ export interface vtkSeedWidgetState {
getMoveHandle(): ISeedWidgetHandleState;
}

// The type of object returned by vtkWidgetManager.addWidget()
// Object returned by vtkWidgetManager.addWidget().
// One instance per view.
export interface vtkSeedWidgetHandle {
/**
* Place the seed position.
* @param center Vector3 3D position
*/
setCenter(center: Vector3): void;

/**
* Turn the seed widget as interactive.
* @see vtkSeedWidgetHandle.endInteract
*/
startInteract(): void;

/**
* Stop the seed widget to be interactive.
* @see vtkSeedWidgetHandle.endInteract
*/
endInteract(): void;
}

export interface vtkSeedWidget {
Expand Down