File:Trilite.png
Summary
| Description |
English: A doubly-truncated cylinder, illuminated by 3 perpendicular spotlights. Inspired by File:Dualite.jpg. Also known as a "cork plug". |
| Date | |
| Source | Own work |
| Author | Kostmo |
| PNG development |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution 3.0 Unported license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
Source code
// Author: Karl Ostmo
// Date: 09/05/2010
// Version: 1.2
#include "colors.inc"
#include "textures.inc"
#declare camera_pos = 7;
#declare point_lightsource_pos = 20;
#declare spotlight_distance = 60;
#declare wall_spacing = 3;
#declare object_radius = 0.75;
#declare object_right_edge = wall_spacing - object_radius;
#declare wedge_slope = 0.5;
#declare first_wedge_plane_z_intercept = wall_spacing - wedge_slope*object_right_edge;
#declare first_wedge_plane_distance = first_wedge_plane_z_intercept / sqrt(wedge_slope*wedge_slope + 1);
#declare second_wedge_plane_z_intercept = wall_spacing + wedge_slope*object_right_edge;
#declare second_wedge_plane_distance = second_wedge_plane_z_intercept / sqrt(wedge_slope*wedge_slope + 1);
camera {
location camera_pos
look_at 0
}
difference {
intersection {
cylinder {
<wall_spacing - object_radius, wall_spacing, wall_spacing>, <wall_spacing + object_radius, wall_spacing, wall_spacing>, object_radius
}
plane {
<-1, 0, 1/wedge_slope>, first_wedge_plane_distance
}
}
plane {
<1, 0, 1/wedge_slope>, second_wedge_plane_distance
}
pigment {
Candy_Cane
scale 0.25
}
}
#declare planes = array[3] {x, y, z}
#declare lightsource_positions = array[3] {
<spotlight_distance, wall_spacing, wall_spacing>,
<wall_spacing, spotlight_distance, wall_spacing>,
<wall_spacing, wall_spacing, spotlight_distance>
}
#declare lightsource_targets = array[3] {
<0, wall_spacing, wall_spacing>,
<wall_spacing, 0, wall_spacing>,
<wall_spacing, wall_spacing, 0>
}
#declare lightsource_colors = array[3] {
Red,
Green,
Blue
}
#declare Index = 0;
#while(Index < 3)
light_source {
lightsource_positions[Index]
color White
spotlight
radius 1
falloff 2.5
point_at lightsource_targets[Index]
}
plane {
planes[Index], 0
pigment {
lightsource_colors[Index]
}
}
#declare Index = Index + 1;
#end
light_source {
point_lightsource_pos
color 0.4
}