fix structure transform scale calculation (#151)

fixes #150
nmwsharp · Dec 26, 2021 · fda65ff · fda65ff
1 parent 8e692da
commit fda65ff
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/structure.cpp b/src/structure.cpp
@@ -167,7 +167,7 @@ std::tuple<glm::vec3, glm::vec3> Structure::boundingBox() {
 float Structure::lengthScale() {
   // compute the scaling caused by the object transform
   const glm::mat4x4& T = objectTransform.get();
-  float transScale = (T[0][0] + T[1][1] + T[2][2]) / (3. * T[3][3]);
+  float transScale = abs(glm::determinant(glm::mat3x3(T))) / T[3][3];
   return transScale * objectSpaceLengthScale;
 }