###### Descrizioni ed esempi per il raytracer POV-Ray di Friedrich A. Lohmüller Esempi POV-Ray - Come fare oggetti per POV-Ray
English
Français
Deutsch

Home
- POV-Ray Tutorial

- Esempi per POV-Ray
Indice generale
- Geometria
- Architettura
- Tecnica
- Scala a Pioli
- Piloni e Tralicci
- Parapetto
- Ponte
- Tubature
- Bifucazione di Tubi
- Rubinetto di Arresto
- Catena
- Bobina di filo
- Torpedo
- Cruise Missile
- Razzo, Missile
- Ruota
- Camion
- Elica
- 1. Pale d'Elica
- 2. Motion Blur
- 3. Assemblaggio
- Aeroplano
- Canoa
- Chitarra
- Display a 7 Segmenti
- Cavo piatto
- Fascio di cavi

Propeller

###### How to simulate the motion blur of rotating blades.

Simulation of the motion blur of rotating blades
To acchieve this effect we have to use a thin disk with a texture of radial stripes going from a little bit transparent white colour ( "color rgbt <1,1,1,0.3>") continuously to a totally clear section ("color Clear"). Increasing the last value of rgbt<1,1,1,0.3> to i.e. rgbt<1,1,1,0.5> make the blur less visible and more transparent. If we use white blur stripes than to test this effect we need to take a dark background so that the effect will be visible clearly. The statement "radial" together with a "texture_map" shows this effect in the xz-plane, so we have to turn it by rotate<90,0,0> to the xy-plane. Using the Number_of_Blades as well as the Blade_Radius with a declared variable, allows us to adapt this disk to any kind of propeller we want.

 Simulare motion blur

```//----------------------- blured radial stripes
rotate <90,0,0> // turn it in  x y plane
texture_map { [0.00  pigment {color rgbt<1,1,1,0.3>}
finish  {ambient 0.15
diffuse 0.85
phong 0.1       }]
[0.60 pigment{ color Clear }]
[1.00 pigment{ color Clear }]
}
#end // end of macro --------------------------------------

// -------------- the blur of the propeller blades