View Full Version : Infinite Zoom

05-20-2008, 11:21 PM
How do some 3D modelers make zooming in/out appear almost infinite?
And the rate of zooming appears almost constant, e.g. objects don't suddenly explode, and zooming doesn't stop to a crawl.

05-21-2008, 10:04 AM
Often it is not a zoom but more a forward/backward travelling. Adjust the increment to be a fixed percentage of the current distance to view target.

05-22-2008, 03:15 PM
How should this look if I zoom toward the origin (0,0,0)?

In some 3D modelers, it feels like it goes on forever. The only noticeable thing is the grid resizing itself over and over again.

05-22-2008, 03:25 PM
You have camera position, and aiming point (such as 0,0,0).
Compute distance between both.
Now advance camera by 10% of distance, along the [position,origin] vector. Whatever the distance, it will feel like a continuous zoom, exactly what you want to do.