Nrrd loader in segmentaion mode cannot display the 3d mesh in correct position for each slice.

[LinkunGao]

Description

• the saggital and coronal view's slice space is too big, so when we drag the slice index to 0 or maximum(384). we can see the slices are beyond the boundaries.
  

• the axial view's slice space is small, it cannot reach the saggital and coronal boundary
  

Idealy, it should be displaiedlike a box.

Reproduction steps

1. use nrrd loader
2. set segmentation mode
3. load nrrd file, then add all view slices to scene.

Code

loader = new NRRDLoader();
loader.setSegmentation(true);
 loader.load(url, function (volume) {
      const sliceZ = volume.extractSlice("z", initIndexZ);
      const sliceY = volume.extractSlice("y", initIndexY);
      const sliceX = volume.extractSlice("x", initIndexX);
     scene.add(sliceX.mesh, sliceY.mesh, sliceZ.mesh)
})

Live example

segmentation app

Screenshots

No response

Version

r151

Device

No response

Browser

Chrome

OS

No response

[LinkunGao]

• the issue might be the nrrd image spacing in segmentation mode is not correct.
• in the segmentation mode, the nrrd image displays the real length (width, height in centimeter) , not like the RAS.