kawecki opened this issue on Oct 18, 2011 ยท 26 posts
kawecki posted Tue, 18 October 2011 at 11:04 PM
Quote - but I think everyone is missing kawecki's point. Refraction bends light, the light leaves a medium at a different angle from that at which it entered the medium. The effect should be constant. If you put a stick into a bathtub, it will appear to have a kink at the point where it enters the water, but only at that point, the part before it enters the water will appear straight, and the part in the water will appear straight
A window is even much better example, a window is made of glass that has a refraction index and you don't see through the window objects cut into pieces as in my rendering.
Quote - Is the refractor a single or double sided surface? If double sided
I am using one sided square, it is like a window with thickness = 0, I don't know what Poser will do. In real life in this case the glass will be as it doesn't exist because light refracts, travel a zero distance and then bends back as leaves the surface producing zero displacement of the light ray. Poser obviously is not doing this.
The other possibility is that the light bend when hit the surface and then continue to travel with this new direction. This will produce a change of the angle of viewing the object and no mesh deformation. Again Poser is not doing it.
I don't know what will happen with a two sided square or a cube. I don't know if Poser will treat this as a volume filled with a refractive material or it will be nothing more than two planes with normal media between them or it will bend even more when hits the exiting surface. Later will do the tests.
The most weird thing and this is a bug of Poser, at least Poser6, is that a medium with refraction index 1.00 is 100% transparent, doesn't bend the light, doesn't reflect the light, and doesn't deform the object, it is just invisible. This is not happening and the posted images were rendered with refraction index 1.00
Stupidity also evolves!