volumeCropping getOrientationFromNormal.ts

0% Statements 0/7

0% Branches 0/4

0% Functions 0/1

0% Lines 0/7

Press n or j to go to the next uncovered block, b, p or k for the previous block.


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  import { vec3 } from 'gl-matrix';
import { utilities } from '@cornerstonejs/core';
import type { Types } from '@cornerstonejs/core';
import { ORIENTATION_TOLERANCE } from './constants';
 
/**
 * Maps a camera normal vector to an orientation string.
 * Returns 'AXIAL', 'CORONAL', 'SAGITTAL', or null if not matched.
 *
 * @param normal - The view plane normal vector
 * @returns The orientation string or null if not matched
 */
export function getOrientationFromNormal(
  normal: Types.Point3
): 'AXIAL' | 'CORONAL' | 'SAGITTAL' | null {
  if (!normal) {
    return null;
  }
 
  const canonical = {
    AXIAL: [0, 0, 1],
    CORONAL: [0, 1, 0],
    SAGITTAL: [1, 0, 0],
  };
 
  for (const [key, value] of Object.entries(canonical)) {
    if (
      utilities.isEqualAbs(
        1,
        vec3.dot(value as Types.Point3, normal),
        ORIENTATION_TOLERANCE
      )
    ) {
      return key as 'AXIAL' | 'CORONAL' | 'SAGITTAL';
    }
  }
 
  return null;
}