Crude method of fixing orientation and aligning multiple objects

[Shades84]

I was having issues with imported data being the wrong orientation up and made a few modifications to the DICOM import functions. I understand there was a recent update that solves this but i've not gotten to test that yet. So i thought i'd share what was (mostly) working for me. I also am using the library a little bit differently and have an outer "parent" object to the VolumeRenderObject (so three objects deep). I had to add some offsets and things to get everything aligned in the patient space. I'm not a software engineer, and I know this code is probably not great, but its a rough first draft.

// Added this method to the DICOMImporter.cs code
private string inferOrientation(DICOMSliceFile slice) {
           float[] cosines = slice.imageOrientation;
           string cosineString ="";

           for(int i=0; i <6; i++) {
               cosines[i]= (float)Math.Round(cosines[i]); //round the cosines to 0 or 1. This gives us generally the direction. 
               cosineString+=cosines[i].ToString();
           }
   		
           // this is really quick and dirty, but medical scans are almost always axial, coronal and sagittal. So we round the orientation data and make a best guess about which it is
           switch (cosineString) {
               case "100010":
                   return "axial";
               case "01000-1":
                   return "sagittal";
               case "10000-1":
                   return "coronal"; 
               default:
                   return "unknown";
           }

    
       }
   	
// Added a slicePlane attribute to the VolumeDataset class. This is a string that represents the slice direction
//inferOrientation returns its best guess at the orienation

// in the ImporterUtilsInternal ConvertLPSToUnityCoordinateSpace method, I added the following code to adjust the orienation based on the slicePlane 

if(volumeDataset.slicePlane == "axial") {
           volumeDataset.rotation = Quaternion.Euler(270.0f, 0.0f, 0.0f);
           }
           else if (volumeDataset.slicePlane == "sagittal") {
           volumeDataset.rotation = Quaternion.Euler(180.0f, 90.0f, 0.0f);
           }
           else if (volumeDataset.slicePlane == "coronal") {
           volumeDataset.rotation = Quaternion.Euler(180.0f, 0.0f, 0.0f);
           } else {
           volumeDataset.rotation = Quaternion.Euler(3.0f,5.0f,40.0f);
           }
   		
   		
// this code sets the offset of the object so the corner of the volume aligns with the origin of the outer object. you need differnt offsets based on what direction the scan is
// this is in the VolumeObjectFactory CreateObjectInternal method


Vector3 offset;
switch (dataset.slicePlane) {
               case "axial":
                   offset = new Vector3(dataset.scale[0], dataset.scale[2], (-1 * dataset.scale[1])) / 2f;
                   break;
               case "sagittal":
                   offset = new Vector3(dataset.scale[2], dataset.scale[0], (-1 * dataset.scale[1])) / 2f;
                   break;
               case "coronal":
                   offset = new Vector3(dataset.scale[0], dataset.scale[1], (-1 * dataset.scale[2])) / 2f;
                   break;
               default:
                   offset = new Vector3(dataset.scale[0], dataset.scale[1], dataset.scale[2]);
                   break;
           }

meshContainer.transform.localPosition = offset;

[mlavik1]

Thank you @Shades84 , I will have a look at it soon! :) Been busy with some other things recently, and also have another task I need to finish first, but I'll take a look at this next. Thanks a lot for sharing! :)