POV-Ray : Newsgroups : povray.advanced-users : Spherical camera upside-down : Spherical camera upside-down Server Time
29 Apr 2024 10:36:03 EDT (-0400)
  Spherical camera upside-down  
From: Mike Horvath
Date: 8 Sep 2016 08:44:35
Message: <57d15d33$1@news.povray.org>
I have the following spherical camera:

		#declare Camera_Up		= -y;
		#declare Camera_Right		= +z;
		#declare Camera_Location	= <0,0,0>;
		#declare Camera_Direction	= -x;
		#declare Camera_LookAt		= Camera_Location + Camera_Direction;
		#declare Camera_Transform = transform
		{
			matrix <0,0,-1,0,1,0,1,0,0,0,-88,-640>		// front entrance
		//	matrix <0,0,-1,0,1,0,1,0,0,0,-88,100>
		//	matrix <0,0,-1,0,1,0,1,0,0,0,-88,-180>
		//	matrix <0,0,-1,0,1,0,1,0,0,-280,-88,-180>
		//	matrix <0,0,-1,0,1,0,1,0,0,280,-312,140>
		//	matrix <0,0,-1,0,1,0,1,0,0,200,-312,-140>
		//	matrix <0,0,-1,0,1,0,1,0,0,-200,-312,-140>
		//	matrix <0,0,-1,0,1,0,1,0,0,-360,-312,140>
		}
		camera
		{
			spherical
			angle		360 180
			up		Camera_Up
			right		Camera_Right
			location	Camera_Location
			direction	Camera_Direction
			transform {Camera_Transform}
		}

It is a LDraw model, which has an inverted y axis or handedness. The 
problem is when I render the scene, it appears upside-down. Even though 
I already compensated by making the y axis negative. Anyone have an idea 
what is going on?

Mike


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