Wrong area total value measurement of vertical wall

[insidemindcode]

Hello,

I am using PotreeDesktop to calculate the area of a mine. While calculating the area of items on the floor or ceiling, it gives the correct measurement. However, when I tried to calculate the area of an item on the wall or from side view, it does not give me the correct area. I tried rotating and measuring from different angles but the area is still incorrect. Can anyone in 2024 please help me through this?

I tryed to change the code in Measure.js in the ''getArea'' section but i dont have enought knolwdge in JS.

Should i try to add the 'Z' value on the final calcule ?