Well : Yes , as I was saying several messages ago , the WCS inter- face hides all that complex math . Relatively complex , but Boolean Logic is actually quite easy to program since it is straight simple logic , but can be many nested layers deep .
For a basic description for the newbie , see http://computer.howstuffworks.com/boolean.htm As I was saying >>>>> once a polygons "qualities" can be deter- mined , using boolean logic , then any number of operations can then be applied , from texturing to particles to displacement map- ing ... , the mind boggles at what can be done to a polygon in RS ! I guess I'm just making my messages way too long , or trying to cover too many points at once ... or something like that . Garry Curtis http://www.niagara.com/~studio > Hi Boolean discussion folk, > > I see conditionals in VSL .... "if" expr true, "then", and of course not > necessarily "else" if expr is not met. > > Booleans are "and", "or", "not" and "XOR" ... so I suppose a conditional > with a Boolean operation if the expr conditions are met, etc .... so: if > value > 0 then this AND that ... etc. But as operands they could just as > easily be replaced by arithmetic operands such as: if value > 0 then this > "multiplied" by that. > > Not that I can see me taking advantage of this. I still havent had time to > sort displacement landscapes even though it's an absolute "must play with" > for me ... so it goes. > > Neil Cooke > > > ----- Original Message ----- > From: "Mark Heuymans" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Saturday, November 05, 2005 11:55 AM > Subject: Re: a few more landscapes (Re: WorldMachine (V3.53)) > > > > At 01:20 AM 11/4/2005 -0500, you wrote: > > >OK : > > > > > > Here is a typical example of how one might construct > > >a very nice GUI user interface that did a nice job of > > >hiding the boolean logic math that is going on behind > > >the scenes . > > >http://www.studiodynamics.net/images/boolean.gif > > > > > > Reminds me of other landscape software's materials (is this WCS?)... slope > > and altitude are omnipotent. Slope/altitude calculations are no problem > for > > VSL but things in RS are much less pre-determined than in this specialist > > software, which has its pros and cons. > > > > > > > > > Boolean Logic ? > > > > > >if A is less than X ... then R . > > >if A is less than X but greater than Y then G . > > >if A is less than X and also less than Y, then B . > > >if A is greater than x but less than Z ... > > > > > > Well , you get the idea . > > > > > > However , VSL does not seem to be all that Boolean- > > >friendly , from what I can gather . > > > > > > You have a point: for example 'If' doesn't have an 'Else'. > > Of course you can perform Booleans in VSL, but complicated stuff is > tricky. > > > > > > > It does not seem to > > >like simple algorithmic formulas , either , from what I > > >can see although algorithmics are _somehow_ "do-able" . > > > > > > Aaa-anyway , as we can see , if VSL will allow a simple > > >"if this slope/height" ..."then this texture/color/density" > > >suddenly we can envision a gui interface that allows for > > >user input regarding what color or what .png image will > > >be used for certain trees , and exactly how certain areas > > >will have it's bare rock displacement mapped . > > > > > > Like I posted to Aidan, a single GUI is difficult with multiple materials > > that rely on scope. I'll try to put it all into a single material and make > > a user-friendly GUI for it with especially slope and altitude control. But > > even this would depend on the mesh, the scene scale (bumpheight and > > displacement are in 'world units'!) and other stuff. > > > > > > > Attack a mesh with VSL !!!! > > > > > >Garry Curtis > > > > > > I like your slogan :) > > > > -Mark H > > > > > > > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.362 / Virus Database: 267.12.8/162 - Release Date: 11/5/05 >
