Latest Contributions by AbeleGiandoso

Hi all! I am creating a medieval city. I am trying to break a bit the perfect structure of the CGA basic roofs and curve a bit the surfaces (think of a Chinese traditional building for instance). Right now my workflow consists in a recursive CGA rule that splits the roof on the vertical axes and scales  the upper portion of a given factor, and then repeats the whole thing a couple of times. I like the result a lot but the problem comes when is time to texture the thing. If i project the UVs before the recursive rule (blue example), the UV get progressively distorted vertically. If instead, after the rule, I comp split the different roof sections in faces (purple example) each face gets undistorted UVs but overall the UVs become discontinous. I'd like to find a way for the curved planes of the roofs to have a single UV "flow" (like in the green example). Can anybody suggest me a way to obtain this result? of if there is a more efficient workflow even better! I'm trying to obtain it using CGA without importing a premodeled geometry from a 3rd party software, so that the rule can be applied easily to any base shape. Thanks  A ... View more

Hi all When exported from Maya, a Collada/DAE file is able to keep any multiple UVSets generated in the software, while instead exporting a OBJ does not save this information. As proof of this, when re-importing a DAE file in Maya, it reads the multiple UV sets again (although it looses any custom name given to the set and calls them "map1, map2, map3, map4, map5".. and so on). Problem is, and I guess I am doing something wrong, I can not get City Engine to "see" any of these UVsets a part from the basic 0 one used for the color texture. As an example, I have exported from Maya a simple UVed cylinder that I will include below, that has 6 UVSets, all identical, and I am trying to run this rule below to have the color map and the texture map refer to the set 0 and 2 which will be tiled differently. Right now the set 2 is not recognized as if it did not exist and the default set 0 is used in place of set 2. This behavior accordingly to the manual happens when City Engine does not sees any multiple UV set. Is there something I am doing wrong in the export from Maya? The UV sets are there. Must they be named in a specific way to be seen by CityEngine? Maya seems not to remember the names given internally to the UVsets when exporting DAE. What can I do? Any help would be appreciated! Thanks const Cyl= "models/Primitives/Cylinder/Cylinder_02.dae" Lot-->    extrude (13) InsertCyl InsertCyl-->    i (Cyl)    CylTEX CylTEX-->  tileUV (0,1,1)  texture ("builtin:uvtest.png")  tileUV (1,'2,'1)  tileUV (2,'2,'1)  set( material.dirtmap, "builtin:uvtest.png")  X ... View more

Hi I am trying to precisely control the subdivision of the inside area of a block generated with "offset subdivision" ,the one that responds to the InnerLot start rule.  Specifically I want to create big areas for parks and squares (around 5%) and for the rest instead have very small lots for tiny houses. The base parameters in the "offset subdivision"  don't give me the control I need as they tend to even out everything so I thought about using a recursive splitArea operation to split the inner portion myself with greater control. 5% of the lots will stop subdividing when they reach a "ParkMinArea" and the rest will continue to split until they reach a "HouseMinArea". It works but there is a major problem I ca not resolve: All the Lots I create are still connected to the original main shape and that means that attributes and constants are giving the same results for all the buildings created on the inside area from that same original inner space instade of variate per building as I hoped they would have. That causes all of them to have the same aspect instead of being able to have each one his own "personality".  I tried to set the seedian to a random number  RSeed = rint (rand(1,10000)) set (seedian, RSeed) for each of the final base shapes but it does not work. Isn't this what setting the seedian is supposed to do? If someone does know what I am doing wrong or can give me a hand I'll be very grateful Many Thanks PS: My alternative plan is to assign a "Park" label to a random final small shape (one every 100) and use a mindistance contextquary inter operation to NIL all the faces in a certain radius from the labeled shape to generate the empty space I need. But it is a heavy calculation so I would prefer avoiding it if possible. ... View more

Hi all. In my workflow I import some geometries from Maya to create more complex shapes. Since I need multiple UV sets to use dirt maps properly I can not use the obj format which only supports 1 UV set. That leaves me only with the collada format option.  Unfortunately when I import collada files the models appear "broken": faces are missing especially when there are pointy ends, like spikes, or around UV seams. This doesn't happens with objs I noted. Is there something I'm doing wrong?  Something I should fix?  Otherwise is there any way in CE to duplicate 1 uv set into the other ones? Then I could just use objs I guess.  Thanks ... View more