Vtk-js: How to set center of actor?

Created on 16 May 2019 · 4Comments · Source: Kitware/vtk-js

Hello!

I have a question.

I rendered the VTI file a volume and overlaid the segmented STL on it.

However, the following problem occurred. The positions of the two rendered objects are different.

I found the following information through the console to solve this problem.

The center () values in the bounding box are different from each other. So I tried to change the position value by referring to the following link.

https://kitware.github.io/vtk-js/api/Common_DataModel_BoundingBox.html#getCenter-x-y-z

I want to adjust the center () value of the bounding box, but I have difficulty using it. Can you help me with this?

Here are some of my code:

import vtkActor from 'vtk.js/Sources/Rendering/Core/Actor';
import vtkMapper from 'vtk.js/Sources/Rendering/Core/Mapper';
.
.
.
stlreader.setUrl(stlToLoad).then(() => {
      stlreader.loadData().then(() => {

        // renderer.addMapper(mapper);
        renderer.resetCamera();
        renderer.addActor(actor);
        // const bounds = actor.getBounds();
        // bounds.setMinPoint(1, 1, 1);
        // renderer.bounds();

        // actor.setCenter(0, 0, 0);
        // renderer.setBounds(0, 351.3125, 0, 351.3125, 0, 297)
        renderer.getActiveCamera().elevation(70);
        renderWindow.render();

        console.log("STL File")
        console.log("actor.getOrientationWXYZ() : ", actor.getOrientationWXYZ())
        console.log("actor.getCenter() : ", actor.getCenter())
        console.log("Get the bounds for this Prop3D as (Xmin,Xmax,Ymin,Ymax,Zmin,Zmax)")
        console.log("actor.getBounds() : ", actor.getBounds())
        console.log("actor.getCenter() : ", actor.getCenter())
        // console.log("actor.getMinPoint() : ", actor.getMinPoint())
        // console.log("actor.getMaxPoint() : ", actor.getMaxPoint())
        console.log("actor.getPosition() : ", actor.getPosition())
        console.log("actor.getXRange() : ", actor.getXRange())
        console.log("actor.getYRange() : ", actor.getXRange())
        console.log("actor.getZRange() : ", actor.getXRange())
        console.log("actor.computeMatrix() : ", actor.computeMatrix())
        // actor.getCenter();

        this.setState({
          renderWindow
        });
      });
    })
    actor.setMapper(mapper);
    // actor.getCenter();
    mapper.setInputConnection(stlreader.getOutputPort());

Thank you!

Source