//--------------------------------------------------------------------------
// +w500 +h800 +FN
//--------------------------------------------------------------------------

#version 3.7;

global_settings {assumed_gamma 1.0}

#default {finish {ambient 1 diffuse 0}}


//--------------------------------------------------------------------------

camera {
  orthographic
  location <0,0,-1>
  look_at  <0,0,0>
  right    x*image_width/image_height
}

//--------------------------------------------------------------------------
   
background {srgb 0.5}   

//--------------------------------------------------------------------------


// *** shadows ***

// top row
box {<-0.2, 0.3, 0>, <-0.1, 0.4, 1>   pigment {srgb   3/255} }
box {<-0.1, 0.3, 0>, < 0.0, 0.4, 1>   pigment {srgb   5/255} }
box {< 0.0, 0.3, 0>, < 0.1, 0.4, 1>   pigment {srgb   7/255} }
box {< 0.1, 0.3, 0>, < 0.2, 0.4, 1>   pigment {srgb   9/255} }

// center row
box { <-0.2, 0.2, 0>, <0.2, 0.3, 1>   pigment {srgb 0} }

// bottom row (rectangles that should be seen clearly with any monitor)
box {<-0.2, 0.1, 0>, <-0.1, 0.2, 1>   pigment {srgb  15/255} }
box {<-0.1, 0.1, 0>, < 0.0, 0.2, 1>   pigment {srgb  20/255} }
box {< 0.0, 0.1, 0>, < 0.1, 0.2, 1>   pigment {srgb  25/255} }
box {< 0.1, 0.1, 0>, < 0.2, 0.2, 1>   pigment {srgb  30/255} }



// *** highlights ***                                  

// top row
box {<-0.2, -0.1, 0>, <-0.1, -0.2, 1>   pigment {srgb 254/255} }
box {<-0.1, -0.1, 0>, < 0.0, -0.2, 1>   pigment {srgb 253/255} }
box {< 0.0, -0.1, 0>, < 0.1, -0.2, 1>   pigment {srgb 252/255} }
box {< 0.1, -0.1, 0>, < 0.2, -0.2, 1>   pigment {srgb 251/255} }

// center row
box { <-0.2, -0.2, 0>, <0.2, -0.3, 1>   pigment {srgb 255/255} }

// bottom row  (rectangles that should be seen clearly with any monitor)
box {<-0.2, -0.3, 0>, <-0.1, -0.4, 1>   pigment {srgb 250/255} }
box {<-0.1, -0.3, 0>, < 0.0, -0.4, 1>   pigment {srgb 248/255} }
box {< 0.0, -0.3, 0>, < 0.1, -0.4, 1>   pigment {srgb 245/255} }
box {< 0.1, -0.3, 0>, < 0.2, -0.4, 1>   pigment {srgb 240/255} }


//--------------------------------------------------------------------------