make linescan  goes along Y for tilt = 45 degrees.
@@ -1191,7 +1191,7 @@ class SceneObj:
# define the 9-point front and back scan. if tilt < 45 else scan z
- if tilt < 45: #scan along y facing up/down.
+ if tilt <= 45: #scan along y facing up/down.
if abs(np.tan(azimuth*dtor) ) <=1: #(-45 <= (azimuth-180) <= 45) ): # less than 45 deg rotation in z. still scan y
self.frontscan = {'xstart':0, 'ystart': 0.1*self.y * np.cos(tilt*dtor) / np.cos((azimuth-180)*dtor),
'zstart': height + self.y *np.sin(tilt*dtor) + 1,
