//*****************************************************************************************************************************
// scene environment
//*****************************************************************************************************************************
#local pov=<1/3,2/3,-1>;
#local dist=0.1;
#local poi=<0,0,-0.75>;
#local pov=vnormalize(pov)*dist+poi;
#local rot=0;//25*-z;

camera {
	location pov
	sky vrotate(y*1,rot)
	right vrotate(x*4/3,rot)
	look_at poi
	normal { bump_map { png "logomask.png" interpolate 2 } 1 translate -0.5 }
}

global_settings {
	max_trace_level 20
}

#local tp3 =
	function {
		pigment {
			quilted
			scale 0.5
			//sine_wave
			colour_map {
				[0 rgb 0]
				[1 rgb 1]
			}
		}
	}
	
#local tc1 = texture {
	pigment {
		rgb 1
	}
	finish {
		ambient 0
		diffuse 0.2
		reflection 0.9
	}
}
	
#declare base=function {"Sphere",<1>}

#macro iso1()
	isosurface {
		function {
			base(x,y,z)+tp3(x,y,z)
		}
		max_gradient 5
		eval
		accuracy 0.001
		sign -1
		hollow
		bounded_by{sphere{0,1}}
		texture { tc1 }
	}
#end

light_source { vaxis_rotate(y*0.1,pov-poi,0) rgb <1,0,0> }
light_source { vaxis_rotate(y*0.1,pov-poi,120) rgb <0,1,0> }
light_source { vaxis_rotate(y*0.1,pov-poi,240) rgb <0,0,1> }

iso1()