#version version

//-----------------------------------------------------------------------------
// Water_material
//                          
#declare Water_material = material {
    texture {
        pigment {
            rgbf 1 //rgbf <0.9, 0.975, 0.925, 0.95>
        }
        /* This was the original normal and finish, but the problem shows up even with them commented out
        normal {
            ripples 1
        }
        finish {
            fresnel
            specular albedo 0.4
            diffuse albedo 0.0
            roughness 0.001
            reflection {
                0.3
                fresnel
            } 
            conserve_energy
        }
        */
    }
    // Commenting out the interior makes the issue go away, but the drip is not visible either
    interior {
        ior 1.33
    } 
}

// End Water_material
//-----------------------------------------------------------------------------

//-----------------------------------------------------------------------------
// Drip()
//
#declare Drip_size  = 0.68;
#macro Drip()
    #local _drip    = quartic{ 
        <
            0, 0, 0, 0, 0, 0, 0, 0, 0, -4, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -4, 0, 0, 0, 0,
            -1, 2, 0, -2, 1
        >
        material { Water_material }
        scale Drip_size
        rotate <-90, 0, 0>
    }                            
    
    _drip
        
#end

// End Drip
//-----------------------------------------------------------------------------

//union {
    plane {
        y, 0
        pigment { checker color rgb 1 color rgb 0 scale 10 }
    }
    box {
        <-10, 0.1, 0>,
        <10, 20.1, 10>
        hollow
        pigment { color rgbt 1 }
    }
    object { 
        Drip()
        translate <10, 10, 20>
    } 
//}

light_source {
    <100, 100, 100>
    1
    
}

camera {
	location <0, 10, -50>
	look_at <0, 0, 0>
	angle 45
	right x * 1
	up y * image_height/image_width
}