http://forum.uforg.net/ ufo academic forum » Recent Posts en Thu, 11 Mar 2010 07:41:01 +0000 http://forum.uforg.net/topic.php?id=48#post-108 Thu, 28 May 2009 11:03:38 +0000 greedycheez 108@http://forum.uforg.net/ <p>i have a problem with morphing a component on any kind of surface in grasshopper. i know that sporphing it works, and when i use grasshopper to morph any other kind of simple geometry it works (so nothing is wrong with my grasshopper file). please take a look? </p> <p>cheers,<br /> wojciech.</p> <p>THE LINKS TO DOWNLOAD SCREENSHOT, GRASSHOPPER AND RHINO FILES ARE:</p> <p><a href="http://www.4shared.com/file/108319990/e89e6e66/sponge_surface_morph.html" rel="nofollow">http://www.4shared.com/file/108319990/e89e6e66/sponge_surface_morph.html</a><br /> <a href="http://www.4shared.com/file/108321328/8a32e876/sponge_4_3d_voronoi_12_trial.html" rel="nofollow">http://www.4shared.com/file/108321328/8a32e876/sponge_4_3d_voronoi_12_trial.html</a><br /> <a href="http://www.4shared.com/file/108321408/bd4b9c71/MORPH_TEST.html" rel="nofollow">http://www.4shared.com/file/108321408/bd4b9c71/MORPH_TEST.html</a> </p> http://forum.uforg.net/topic.php?id=47#post-107 Wed, 13 May 2009 09:10:36 +0000 manunrd82 107@http://forum.uforg.net/ <p>Maybe I got it. Keeping what I have written in the previous e-maiI I think that depending on the position of the first triangle we have, the Iterations are similar but different in the angle of rotation:<br /> The possible angles are really similar to the anglesof a triangle: 30°-60°-90° that correspond about respectively to arctg (1/2)=0,46 Rad= 23,36° ; [pi/2 - arctg (1/2)]=1,57-0,46=1,11 Rad= 63,6° and<br /> pi/2=1,57 Rad=89,95°</p> <p>But these rotations always happens after a horizontal/vertical flip</p> <p>If you look at the example that I have attached here you can see that the first triangle has been firstly flip vertically and after rotated of arctg(1/2).....</p> <p>What do you think?<br /> I have tried also with another position of the first triangleand seen that had to be flip horizontally and after rotated of pi/2 </p> http://forum.uforg.net/topic.php?id=47#post-106 Wed, 13 May 2009 09:09:54 +0000 manunrd82 106@http://forum.uforg.net/ <br /> http://forum.uforg.net/topic.php?id=47#post-105 Wed, 13 May 2009 09:09:36 +0000 manunrd82 105@http://forum.uforg.net/ <br /> http://forum.uforg.net/topic.php?id=47#post-104 Wed, 13 May 2009 08:46:19 +0000 manunrd82 104@http://forum.uforg.net/ <p>Hi, I'm trying to find all the rules that make a pinwheel tiling in order toget a gc script.<br /> I'm writing whatever important I find so that maybe you can give me your feedback....<br /> I think there are several way to get it:<br /> 1_ draw a triangle and subdivided it into 5 similar triangles.<br /> 2_Draw one triangle and starting with rotations, translations and reflections.</p> <p>STEP 1: drawing a pinwheel triangle (1,2,?5)<br /> STEP 2a : rotate it with certain angles that, (I guess are different dipending on the position of the first triangle)<br /> STEP 2b : divide it into 5 similar smaller triangles<br /> STEP 3 : scale the resulting triangle composed of 5 other triangle with a scale factor of ?5<br /> STEP 4 :so on...</p> <p>What is not clear yet is the starting point....draw and subdivide a triangle or draw it and rotate with angles as arct (0,5) ???<br /> Thx<br /> Manu </p> http://forum.uforg.net/topic.php?id=45#post-103 Tue, 05 May 2009 13:38:26 +0000 gustav 103@http://forum.uforg.net/ <p>look here</p> <p><a href="http://communities.bentley.com/forums/thread/15415.aspx" rel="nofollow">http://communities.bentley.com/forums/thread/15415.aspx</a></p> <p>have a go and come back w specific questions! </p> http://forum.uforg.net/topic.php?id=46#post-102 Tue, 05 May 2009 13:35:56 +0000 gustav 102@http://forum.uforg.net/ <p>gc format is .gct </p> http://forum.uforg.net/topic.php?id=46#post-101 Mon, 04 May 2009 21:33:23 +0000 manunrd82 101@http://forum.uforg.net/ <p>I saved a Gc file but now I can't open because is not in a recognized file format.<br /> It's a DGN file. I guess is Microstation. Is there a default option in the saving function I have to change? It's the first time it happens. </p> http://forum.uforg.net/topic.php?id=45#post-100 Mon, 04 May 2009 21:20:45 +0000 manunrd82 100@http://forum.uforg.net/ <p>I got many questions about it. Let me try.. I'm trying to ge the tiling in Gc so want to repicate the first<br /> triangle I draw. How can I?<br /> Thx </p> http://forum.uforg.net/topic.php?id=45#post-99 Mon, 04 May 2009 21:15:19 +0000 gustav 99@http://forum.uforg.net/ <p>Hi,</p> <p>Can you post your transaction file in the case you already made some attempts or otherwise at least a sketch or diagram of what you'd like to achieve.</p> <p>Thanks</p> <p>Gustav </p> http://forum.uforg.net/topic.php?id=45#post-98 Mon, 04 May 2009 16:00:35 +0000 manunrd82 98@http://forum.uforg.net/ <p>Hi,<br /> how can I replicate a triangle in many directions as if I mirror it using an axes (as one of the sides) and in order to have it adjacent to the first?<br /> Thx </p> http://forum.uforg.net/topic.php?id=44#post-97 Mon, 02 Mar 2009 16:57:41 +0000 greg 97@http://forum.uforg.net/ <p>Hello!!!</p> <p> Just something interesting I found in the BE forums. It allows you to create Voronoi diagrams in GC, with the use of a program called QHull that you need to install. Instructions can be found on <a href="http://www.cerver.org" rel="nofollow">http://www.cerver.org</a>, as well as an explanatory video of how it actually works.</p> <p> I tried to make it work but I was not able to, I think I have not installed QHull properly as it seems to be a bit tricky. However, the programmer told me that it should work better in the V8i. You can track the conversation in the BE forum for GC.</p> <p><a href="http://communities.bentley.com/forums/39544/ShowThread.aspx#39544" rel="nofollow">http://communities.bentley.com/forums/39544/ShowThread.aspx#39544</a></p> <p>Cheers! </p> http://forum.uforg.net/topic.php?id=43#post-96 Wed, 25 Feb 2009 10:48:19 +0000 gustav 96@http://forum.uforg.net/ <p>Westminster University, 4th floor auditorium. 10 am - 6 pm.</p> <p>G </p> http://forum.uforg.net/topic.php?id=43#post-95 Tue, 24 Feb 2009 12:37:23 +0000 luis tillan 95@http://forum.uforg.net/ <p>Hello Gustav, </p> <p>Could you please let me know the schedule for the workshops from the 25th to the 27th......</p> <p>best, </p> <p>Luis </p> http://forum.uforg.net/topic.php?id=42#post-94 Mon, 23 Feb 2009 10:09:24 +0000 gustav 94@http://forum.uforg.net/ <p>one way of accessing a certain progression of numbers is by modulo division. it gives the remainder afetr integer division; 5 mod 2 equals 3 and so on. look it up on mathworld or wikipedia for details if needed, but the present application would be something like:</p> <p>i mod 7 = 0 isolates the series {0,7,14,21...}</p> <p>i mod 3 = 2 isolates the series {5,8,11,14...}</p> <p>if you're actually only out to step between 2nd-depth indices 1 and 7 always, then just make the nested loop</p> <p>for (i=0;i&lt;whatever.count;i++)<br /> {<br /> for (j=0;j&lt;whateverother.count;j++)<br /> {<br /> BSplineCurve projectedcurve = new BSplineCurve(this)</p> <p> if (j mod 6 = 1)<br /> {<br /> projectedcurve.ByProjectionOnPlane(originalbsplinecurve[i][j], whateverPlane)<br /> }<br /> }<br /> }</p> <p>Now I'm writing from memory so you might have to tweak it a little to actually output into the model space again. </p> <p>HTH</p> <p>G </p> http://forum.uforg.net/topic.php?id=42#post-93 Sun, 22 Feb 2009 03:40:26 +0000 andrea 93@http://forum.uforg.net/ <p>hi, does anyone know of a way of selecting only features with odd indexes?<br /> ie: I want to project a series of curves onto a surface. The curves come in pairs and their indexes are:<br /> -bsplinecurve[0][0] -bsplinecurve[1][0]<br /> -bsplinecurve[0][1] -bsplinecurve[1][1]<br /> -bsplinecurve[0][7] -bsplinecurve[1][7]<br /> -bsplinecurve[0][8] -bsplinecurve[1][8] and so on....for many curves<br /> I would like to project only those ending in [x][1] or [x][7]. Is there a way of writing this?<br /> [x][odd], or [x][i+1] or something along those lines? </p> http://forum.uforg.net/topic.php?id=40#post-92 Wed, 18 Feb 2009 17:17:01 +0000 gustav 92@http://forum.uforg.net/ <p>script works as far as playing all the way to the end without errors goes. could you use more images and less words please - upload a sketch or something of what you want to achieve. then state what you would like the script to do instead of what it is doing.</p> <p>gustav </p> http://forum.uforg.net/topic.php?id=41#post-91 Mon, 16 Feb 2009 16:43:11 +0000 greg 91@http://forum.uforg.net/ <p>Hello again. </p> <p>this about the parametric masterplan.</p> <p>Any ideas how I can tell GC to run a sequence of moments/light studies on a given period of time, in order to get a reading of the average light study of the area???</p> <p>I am thinking either to use goal seeker code, or using excel spreadsheets. To be hinest, I am not sure it would work, but I would like to have help with either way if possible, as I have never worked with either.</p> <p>Thanks again!!!</p> <p> </p> http://forum.uforg.net/topic.php?id=40#post-90 Mon, 16 Feb 2009 16:35:51 +0000 greg 90@http://forum.uforg.net/ <p>I am attaching the final model I made for my abstract. Ii tried to clean up the recursion script as it was suggested by Tom on Saturday, but there was a problem. When I deleted the coordinate system, recursion was working,but it was also applying a coordinate system every time I changed the recursion depth, along with the circle that I originally wanted. With the first script that was not happening, but I do not understand why really.</p> <p>The reason this is a problem is because when I was trying to apply a point on the recursion circles and replicate it, it wouldn't work , because the coordinate system was part of the recursion feature as well.</p> <p>Thank you!</p> <p> </p> http://forum.uforg.net/topic.php?id=39#post-89 Wed, 11 Feb 2009 10:12:38 +0000 gustav 89@http://forum.uforg.net/ <p>hey greg, i'm going to be rude and not respond all of your 10 simultaneous questions:</p> <p>- as in the answer to the previous forum question i think you should demote your ms object to a bsplinesurface to make sure it comes into gc correctly. i don't even know how you got it in to be frank, i can't even attach a smartsurface in the first place on my end..</p> <p>- how are the values output from 3dmax? not familiar with the system, but if you can output as text or similar then you can quite easily run it through excel or use the DataImporter feature and get the dynamic connection you're after.</p> <p>- srf deformations and points not projecting right i'll leave for now as it' likely to have to do with the smartsurface/bsplinsurface thing. try again.</p> <p>- connecting via indices: there is an option somewhere in line by lacing i think where you can specify "corresponding indices" or something similar. if that doesn't work it can be solved with a little function. explain a bit better what you actually need first though - a sketch says it better than a hundred words...</p> <p>hth</p> <p>g </p> http://forum.uforg.net/topic.php?id=39#post-88 Tue, 10 Feb 2009 15:09:28 +0000 greg 88@http://forum.uforg.net/ <p>Hello again!!!!</p> <p>I am trying to set up an accurate orientation lighting calculation system in GC.I have a few questions tho as I come accross certain difficulties.</p> <p>I project the points on the imported surface, which was a MS smartsurface promoted to a BSpline Surface, but the projection does not seem to work as expected. I am attaching the file, but I am afraid I can only send the attached surface via email because of the size, so if anyone wants to have it please let me know.</p> <p>Now, I am using the 3dmax daylight system, which gives me the azimuth and altitude values in numbers, where I translated them in a BySphericalCoordinatesCS. Is there a possibility of a string use where I can keep changing the values in 3dmax and are automatically updated in GC???</p> <p>By the way,when I promoted the surface, it changed proportion and became a lot smaller than the original one, and there where certain deformations in the surface. any ideas why that happened?</p> <p>Now lets say that for every individual point that is being projected on the surface, i want a line connecting those points. I tried to do that but it seems that all the sunpoints create a line to the few points that are actually projected.I only want a line where the case is for example......SunPoint[10][10] and ProjectedPoint [10][10] and not between SunPoint[10][10]ProjectedPoint [10][11] and so on...</p> <p>one last thing.I am thinking of using CS instead of points to imitate the sun. Then I would make a line by StartDirectionLength and where that line intersects the surface, create a point. I ll give it a go right now and see how it goes...</p> <p>Thank you very much!</p> <p> </p> http://forum.uforg.net/topic.php?id=38#post-87 Tue, 10 Feb 2009 14:14:12 +0000 gustav 87@http://forum.uforg.net/ <p>yeah...trimmed surfaces are not that easy to transport between interfaces. if you repeat the process with no trims it will work. try then to either build it without trimming or aim to do the trims in gc. how did you import into ms btw?</p> <p>also - a "zipfile.jpg" still is not a zip-file. just ZIP the dang thing !! :) </p> http://forum.uforg.net/topic.php?id=38#post-86 Tue, 10 Feb 2009 13:04:52 +0000 Joao 86@http://forum.uforg.net/ <p>That should narrow the problem to...my UNknowledge of MS;<br /> or something related with ms levels and any kind of filter gc uses<br /> in the zip file are the .dgn file and the original .3dm file;<br /> the .dgn file in ms shows and detects the surface as it should (Bspline Surface).</p> <p>on other note, when I try to export the surface from rhino in iges format and then import it in ms it just doesnt import anything. </p> http://forum.uforg.net/topic.php?id=38#post-85 Tue, 10 Feb 2009 12:33:35 +0000 gustav 85@http://forum.uforg.net/ <p>last one (and a kind of silly one at that): more than once I've forgotten to give the object a visible color in ms. this gives you black on black and similar things, i.e. it's there but you can't see it... </p> http://forum.uforg.net/topic.php?id=38#post-84 Tue, 10 Feb 2009 12:16:37 +0000 gustav 84@http://forum.uforg.net/ <p>surface.dgn becomes a 2d-file when extension is renamed back so that's probably the issue. upload again please. on another note - if you took the bsplinesurface into ms via iges import it would have become a "smart surface", which is a different type of element to a bspline ditto even though they look the same. this might be why gc won't read it - try to drop it in ms (ms equivalent to "explode" in acad) and make sure it's of the "bspline surface" type in your dgn file. </p> http://forum.uforg.net/topic.php?id=38#post-83 Tue, 10 Feb 2009 12:08:09 +0000 gustav 83@http://forum.uforg.net/ <p>seems like "surface.dgn" is empty. this would indeed create an issue as gc can not yet do magic stunts :) don't know whether this is the same at your end or if it happened due to the .txt extension on the dgn-file while uploading. either way, do it again and just zip it! </p> http://forum.uforg.net/topic.php?id=38#post-82 Mon, 09 Feb 2009 22:08:45 +0000 Joao 82@http://forum.uforg.net/ <p>Here goes:<br /> Microstation + GC V8i</p> <p>Trying to import a surface from Rhino into GC and use it to populate with points,</p> <p>Opened .3dm file in MS and saved it as .dgn<br /> ModelAttachment of .dgn file it's ok,<br /> Create 2 points and set the Range (seems) ok,<br /> bsplineSurface SelectElementsWithinRangeAndPromoteToFeature</p> <p>Surface doesn't show in GC and at the &quot;Symbolic Diagram&quot; showed as red, can't find anywhere a error message or something that explain what is going wrong.</p> <p>Any sharp pair of eyes - and mind - that can figure it out?</p> <p> </p> <p><strong>(surface.txt is actually surface.dgn rename file extension)</strong> </p> http://forum.uforg.net/topic.php?id=37#post-81 Wed, 04 Feb 2009 17:35:40 +0000 greg 81@http://forum.uforg.net/ <p>i will try that, thank you very much Gustav!!!! </p> http://forum.uforg.net/topic.php?id=37#post-80 Wed, 04 Feb 2009 17:32:39 +0000 gustav 80@http://forum.uforg.net/ <p>much better, thanks. seems to me you could create your recursive component based on a circlebycenterradius rather than this overly complicated way of lines and polygons. then you array a number of points of your choice along the ledge you've drawn and apply the comp there, by centerpoint. </p> http://forum.uforg.net/topic.php?id=37#post-79 Wed, 04 Feb 2009 17:17:35 +0000 greg 79@http://forum.uforg.net/ <p>Can you try this one please? I hope this one is more clear.</p> <p> </p> http://forum.uforg.net/topic.php?id=37#post-78 Wed, 04 Feb 2009 16:54:14 +0000 gustav 78@http://forum.uforg.net/ <p>the script you've supplied is a bit messy. is your question how to make your diagram from your particular script or just how to make your diagram in general? also could you please supply a gct that only contains relevant elemnts to the question, thanks. </p> http://forum.uforg.net/topic.php?id=37#post-77 Wed, 04 Feb 2009 16:32:58 +0000 greg 77@http://forum.uforg.net/ <p>sorry the diagram didnt not upload on the previous one. Here it is.</p> <p> </p> http://forum.uforg.net/topic.php?id=37#post-76 Wed, 04 Feb 2009 16:28:19 +0000 greg 76@http://forum.uforg.net/ <p>Hello everyone. </p> <p>I need a bit of help with something I try to make in GC. I have a system of concentric circles as a component based on a polygon, and I want to populate a surface with it.I am including a diagram of what I want to do. Consider on the image that I want the circles to be on a ledge on the perimeter of a certain buidling construction.Any simple way of doing that?</p> <p>Thank you very much!</p> <p> </p> http://forum.uforg.net/topic.php?id=34#post-73 Thu, 29 Jan 2009 00:12:55 +0000 gustav 73@http://forum.uforg.net/ <p>bring in to microstation, resave as dgn, one for each data type. make modelattachment features in gc (one per file). promote using the appropriate data type (nb gc "point" is still ms "line").</p> <p>for uploading in this forum, gct:s won't work, change extension to .txt. </p> http://forum.uforg.net/topic.php?id=34#post-72 Wed, 28 Jan 2009 22:00:41 +0000 richard.schunemann@gmail.com 72@http://forum.uforg.net/ <p>does anyone know how to import dwg's to gc? </p>