"liujg" <seu### [at] qqcom> wrote:
> background {
>   color rgb < 0.60, 0.70, 0.95 >
> }
> camera {
>   location <0, 15, -60>
>  direction <0, 2,  1>
>   right x*1.33
>  look_at <0,15,0>
> }
> light_source {
>   <0,28,0> // position of a coner of the light plane
>   rgb<1.0,1.0,1.0>
>   area_light <3, 0, 0>, <0, 3, 0>, 2, 2 // light plane's edges; m by n bulbs
>  adaptive 1 // if on, some rays will not be traced
>  jitter // randomization of bulb's positions, emulating fuzzy shadow edges
> }
>
>   object {
>       mesh2{
>          vertex_vectors{
>                       5
>                         <-500, 0, 30>, < 500, 0, 30>,<500,  500, 30>, < -500,
> 500, 30>  , < 0, 250,  30>
>
>                        }
>              uv_vectors{
>                        5
>                          <-25.0, -25.0>,< 25.0, -25.0> ,  < 25.0,  25.0>,
> <-25.0,  25.0>,  <0.0, 0.0>
>                        }
>            face_indices{
>                        4,
>                         <0,1,4>, <1,2,4>,<2,3,4>, <3,0,4>
>
>                        }
>              uv_indices{
>                      4,
>                         <0,1,4>, <1,2,4>,<2,3,4>, <3,0,4>
>
>                         }
>
>             }
>      texture{
>          pigment{
>        uv_mapping
>         image_map { png "DHKX0221.png"  map_type 0   interpolate 2 }
>                 }
>          finish {
>       specular 0.3
>       roughness 0.01
>                 }
>             }
> }

the render result.

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