How to get the center value of a GLWindow interactor position in ResliceCursorWidget

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1

Hey,
I want to set the center of my reslice widget cursor, using the position where we clicked with the mouse in a reslice actor (one of the three views in the ResliceCursorWidget ),
I did this

obj.interactor.onLeftButtonPress(async (callData) => {
const pos = callData.position;
const arr = [pos[0], pos[1], pos[2]];
widget.setCenter(arr);
})

I figured out that we can’t do a setCenter using the position value, because the widget center value is different from the click position at certain location.
I don’t know how to setCenter the widget correctly thank you for your help

2

callData.position is in pixel coordinate system. setCenter() expects world coordinate. You need to map from display coordinate to world coordinate. I believe there are convenient functions in the render window , render window interactor or renderer classes.

1 Like
3

Yes thank you so much, I did it using:

const pos = callData.position;
    const arr = obj.interactor
      .getView()
      .displayToWorld(pos.x, pos.y, pos.z, obj.renderer);