See Perspective ...

[Lin Evans]

This is a simple 3D Transform with a "stack" of images which "fall" forward one at a time.

The purpose is to demonstrate how our vision handles perspective relative to our position viz the images. Run the zipped executable and position yourself to the far left of your display. As the images fall forward, look at the left and right corners, specifically the "triangls" created by the perspective.

When you look from the left side of your display, the left corner seems longer than the right corner. When your view is from dead center, it the two appear symmetrical. When you view from the far right, the right corner seems longer and the left corner shorter.

In reality, they are exactly the same, but our viewing position creates the illusion of the difference. This can give you an idea of the issues involved in the development of the 3D Transform feature of PTE and why it took a good deal of time for the programming of this feature so that we would have similar views on both the preview and mini-viewer, etc.

http://www.learntoma...tackfalling.zip (about 15.5 meg)

Best regards,

Lin

[morturn]

That is a very interesting observation Lin, and goes a long way to explain why some animations used in slideshows just don’t look right.