CompuServe Messages

> Not exactly sure what you mean by "behind"… In the case of a subtraction, < In the case of subtraction, the "subtraction" object is only rendered in areas where it's z-buffer value is "within" that of the base object. Let me reiterate that "z-buffer" is not entirerly accurate in the description. The process is quite similar to a z-buffer in the sense that the decision as to which object renders is computed at the image level. In such a way, the subtracted area can have the material properties of the subtraction object. My reason for responding, though, was point out that the math for mesh booleans, like in the 3D editor, is nothing at all like the math that is happening in programs that have animated boolens. Hence, "booleans that work and are animatable" is not applicable in the sense that you meant it, since attempting animated mesh booleans would be a hopeless persuit. Mesh tangencies would crop up causing problems that even the best solids modelers couldn't deal with. — James — Choreo Motion —