orientation of trace_plane_normal

[toneddu2000]

Hi guys, I'm trying to orientate a tripod model near a slope, using trace_plane_normal
This is the tripod in global coordinates: It has red for x axis, green for y axis and blue for z axis

Now, if I use this code I created

Code: Select all

//self is camera entity, which has its own coordinates, but, in this case, it moves on global coordinates except for turning Y axis as yaw
void Orient_Think()
{
   makevectors(self.angles);
   traceline(self.origin,self.origin+(-v_up*128),MOVE_HITMODEL,self);
   fracdown = trace_fraction;
   local vector v = trace_plane_normal;
   makevectors(trace_plane_normal);
   vectest = vectoangles(v);
   setorigin(tripod,trace_endpos);
   tripod.angles = vectest;
   self.nextthink = time + 1;
   self.think = Orient_Think;
}


And, as you can see, orientation changes accordingly to slop perpendicular vector, but x axis and z axis are switched, plus y axis is inverted


Now, I also created a code for make sure tripod turns on yaw accordingly to camera orientation like so

Code: Select all

makevectors(self.angles);
   traceline(self.origin,self.origin+(-v_up*128),MOVE_HITMODEL,self);
   fracdown = trace_fraction;
   if(trace_fraction < 1){
      local vector v = normalize(trace_plane_normal);
      vectest = vectoangles([v_x,v_y,v_z],-v_forward);
   }
   setorigin(tripod,trace_endpos);
      tripod.angles = vectest;


And, it rotates on Y axis, but still X and Z axis are switched
I also tried to invert axis using something like

Code: Select all

vectest = vectoangles([v_z,v_y,v_x],-v_forward);


but orientation is all messed up, so I presume it's not the correct way to do it.
How can I retrieve correct orientation of a trace_plane_normal and how can I manage those data to rotate the axis ternary as I want?

Thanks a lot for any clarification, because, on this subject I'm completely ignorant (it requires math..GAHHH )!