Lightning Posted March 27, 2003 Share Posted March 27, 2003 Hi, I have a problem with the radiosity solution in respect to the surface geometry. I'm talking about one surface, a wall with an opening for example, which is made of separate geometries – instead of punching a hole in the wall I made it of separate extruded Plines. The result is different lighting for each extrusion although they make one surface, and so it can be seen what the wall is made of. Is there something I missed here, other than creating the wall of one object (like an AutoCAD block or booleans)? Barak. Link to comment Share on other sites More sharing options...
allanB Posted March 27, 2003 Share Posted March 27, 2003 hi Barak, post a snapshot... Link to comment Share on other sites More sharing options...
Lightning Posted March 27, 2003 Author Share Posted March 27, 2003 Link to comment Share on other sites More sharing options...
allanB Posted March 27, 2003 Share Posted March 27, 2003 Well... are you using solids? surfaces? in the model a time ago i'd the same problem... since then i always try to model using single blocks... or convert the objects to a single block in viz... that's the only solution i could find... Link to comment Share on other sites More sharing options...
Lightning Posted March 28, 2003 Author Share Posted March 28, 2003 I understand that a single block will work, but what will you do with the corner? you will see the thickness of one wall. Link to comment Share on other sites More sharing options...
bigcahunak Posted March 28, 2003 Share Posted March 28, 2003 Ahalan Barak. This is obviously a modeling prob. How did you model the wall (technique) and which program. Is there a problem replacing those surfaces now in VIZ? Link to comment Share on other sites More sharing options...
Lightning Posted March 28, 2003 Author Share Posted March 28, 2003 Ahalan Vesahalan, I linked Autocad ploylines drawn in plan view, and extruded them in Viz. I know that making one Autocad 2D block for each surface would solve the problem, but it's not alway convenient,and as I said, external corners between 2 walls will still be problematic. Link to comment Share on other sites More sharing options...
bigcahunak Posted March 28, 2003 Share Posted March 28, 2003 So is it one object now? Is this the only view you want to render? Why not trash that wall and window, and create a new one instead in VIZ? Can you post a wireframe image? Link to comment Share on other sites More sharing options...
Lightning Posted March 28, 2003 Author Share Posted March 28, 2003 This is only an example of a general problem. No, it's not one obejrct, the wall is made of different extrusions, between the windows and above and below each window. Is there a way to change it into one object inside VIZ? will a boolean "ADD" will work? I didn't try but I don't think it will because the surface will remain devided into separate faces. Of what I understand of Radiosity, I will have to change my modeling methods in any case... Link to comment Share on other sites More sharing options...
STRAT Posted March 28, 2003 Share Posted March 28, 2003 same problem here too - ideally you want to weld or connect up as many verts as possible. yoo have big faces with smaller faces butting up against them and the end verts meet at different places. you ideally want all verts meeting and joining. Link to comment Share on other sites More sharing options...
allanB Posted March 28, 2003 Share Posted March 28, 2003 That's really the best thing to do! Try to change your model to single blocks! Why don't you try to make a polyline for the wall in cad... and make the openings with the boolean tool in viz! I believe this will solve your problem Link to comment Share on other sites More sharing options...
bigcahunak Posted March 28, 2003 Share Posted March 28, 2003 Your wall modeling techniqeue is wrong from the start. and thats the main reason for the result you got. So, you are right about changing your methods. However, you can try to weld verts as Strat sugested, or you could also play with regathering, which might render the whole wall flat. Link to comment Share on other sites More sharing options...
Lightning Posted March 30, 2003 Author Share Posted March 30, 2003 Well, I've made some tests and this is what I found out: Combining Autocad Blocks with creating a boolean union in Viz basically does the trick. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now