radiance parameters to get rid of blotching. To add another level of complexity to my problem, I am running simulations with a translucent material with the following properties: void trans testTrans
0
0
7 0.478 0.478 0.478 0.000 0.010 0.178 0.635
I have had no issues with the renderings when I use clear glazing, as seen on this image:
However the blotching-issue becomes very noticeable when I introduce translucent glazing into the scene:
For the two above cases I used the following parameters:
_av_ is set to 0
xScale is set to 2
_ab_ is set to 6
_dc_ is set to 0.5
_aa_ is set to 0.2
_ad_ is set to 2048
_st_ is set to 0.5
yScale is set to 2
_ps_ is set to 4
_ar_ is set to 64
_as_ is set to 2048
_ds_ is set to 0.25
_pt_ is set to 0.1
_dr_ is set to 1
_pj_ is set to 0.9
_dp_ is set to 256
_dt_ is set to 0.25
_lr_ is set to 6
_dj_ is set to 0.5
_lw_ is set to 0.01
I ran another test with increased Radiance parameters and got the following output:
with the following parameters:
_av_ is set to 0
xScale is set to 6
_ab_ is set to 6
_dc_ is set to 0.75
_aa_ is set to 0.1
_ad_ is set to 4096
_st_ is set to 0.15
yScale is set to 6
_ps_ is set to 2
_ar_ is set to 128
_as_ is set to 4096
_ds_ is set to 0.05
_pt_ is set to 0.05
_dr_ is set to 3
_pj_ is set to 0.9
_dp_ is set to 512
_dt_ is set to 0.15
_lr_ is set to 8
_dj_ is set to 0.7
_lw_ is set to 0.005
Although the second blotching case is much better than the first, it is still very bad for hours when the sun is lower in the sky. The above images are rendered for a clear sky at 18:00 in Germany in a West-facing room.
Sorry for the long post! Can someone help? Kind regards, Örn
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nside the zone. I would move your comfort evaluation surface to be 1 meter off the ground in order to be representative of typical human height.
Also, you did not intersect the ground with the rest of the zone geometry, resulting in an incorrect energy simulation. After intersection, you also get one surface of the ground zone that is not inside any buildings. I fixed these two things in the attached file ad it works:
I would also recommend breaking the top surface of the ground up into sub-surfaces so that you can capture the variation in ground surface temperature that happens across the outdoors. Second, I would recommend putting some windows on your buildings as the exterior surface temperature of windows can be very different than that of opaque surfaces. Finally, you should keep in mind that the outdoor maps are assuming a very basic outdoor wind profile by default and, to accurately understand outdoor comfort, you really should be incorporating wind patterns after running a CFD. This discussion has some information about importing CFD from other programs to GH:
http://www.grasshopper3d.com/group/ladybug/forum/topics/import-cfd-result-to-honeybee
-Chris…
rested in specializing in the field of Computational design.
The workshop will help understand how Grasshopper facilitates during the design process allowing one to Generate, Automate and Manipulate data.
To Register:
http://goo.gl/forms/gvUTyZihVK
Workshop Structure:
Day 01: 16 August 2018
Introduction to Computational Processes in Architecture
Understanding Grasshopper and its relation to Rhino3D
Working with fields and Grids (Supplementary readings for Architectural theory)
Spatial Concepts using Data
Day 02: 17 August 2018
Understanding Data in Grasshopper - LISTS
Managing Data in Grasshopper (Supplementary reading)
Experimentation on Massing and Architectural Forms
Day 03: 18 August 2018
Understanding Data in Grasshopper – Trees
Surface Logics (Supplementary reading)
Design Exercise and Prototyping
Day 04: 20 August 2018
Architectural Skins
Day 05: 21 August 2018
MasterClass Project
Introduction to various types of Digital Fabrications
Prototyping of works during the Workshops
Basic knowledge of Rhino 5 is required to be able to take this training.
CERTIFICATION: All participants will receive a Workshop certificate from Authorized Rhino Trainer.
3D Printing: Prototyping of works during the Workshops
Workshop Tutor:
Kavitha M, an Architect and Computational Designer, 3D Printing Specialist is also the co-founder of INTO Design Research, will head the Computational Process in Architecture using Grasshopper workshop. Graduated from Stadelschule Architecture class with Masters in Advanced Architecture Design, has been researching on teaching methodologies on digital tools and their influence on Design thinking.…
I thought the easiest way (and really tight deadline now) was c4d mesh deformer because it lets one choose a cage object, so I modeled this "rig", essentially a mesh of 20 carefuly measured points to see how exact the real thing is to the 3d model. My plan is to deform the entire mesh from source (3d model) to target (meaured low resolution mesh = "rig" )
(above two images : C4D test... work with a spheric cage - but not with a mesh I modelled in rhino)
C4D Mesh Deformer doesn't work with the cage geometry like this because I think the cage geometry actually need to be larger and be more like a cage, but of course I can't measure Imaginary cage off this thing :)
So I am asking for a suggestion for any quick tool like mesh deform in c4d, or how one might go about it with grasshopper...
I am attaching the file - for example you can see the magenta colored points and lines show the measured deflection of the structure, from teal-colored points and lines.
The requirement is that the individual surfaces need to export as individual objects in the end.
I am attaching the rhino file here.
https://drive.google.com/open?id=0B8u1qSty0juhVmtCYnEtdFktME0
The exported object files of the individual surfaces need to be within 3mm off from the actual thing for this installation to work.. looking to how surface morph grasshopper component work at the moment.
Best,
Youngjae
Thanks!
Youngjae…
NONE, in SIZING:PARAMETERS". I'm not sure of where to start in troubleshooting this. I've attached the file.
Thank you,
See the errors and warnings below:
{0;0;0}
0. Current document units is in Meters
1. Conversion to Meters will be applied = 1.000
2. [1 of 8] Writing simulation parameters...
3. [2 of 8] Writing context surfaces...
4. [2 of 8] Writing context surfaces...
5. [3 of 8] Writing geometry...
6. [4 of 8] Writing Electric Load Center - Generator specifications ...
7. [5 of 8] Writing materials and constructions...
8. [6 of 8] Writing schedules...
9. [7 of 8] Writing loads and ideal air system...
10. [8 of 8] Writing outputs...
11. ...
... idf file is successfully written to : R:\Green\SuRG\Building_Performance_Analysis\2016_analysis_studies\Energy_Analysis_Comparison\Honeybee_+_Ladybug\tutorial01\EnergyPlus\tutorial01.idf
12.
13. Analysis is running!...
14. ...
...
Done! Read below for errors and warnings:
15.
16. Program Version,EnergyPlus, Version 8.5.0-c87e61b44b, YMD=2016.10.31 11:39,IDD_Version 8.5.0
17.
18. ************* IDF Context for following error/warning message:
19.
20. ************* Note -- lines truncated at 300 characters, if necessary...
21.
22. ************* 24 Sizing:Parameters,
23.
24. ************* Only last 1 lines before error line shown.....
25.
26. ************* 25 None, !- Heating Sizing Factor
27.
28. ** Severe ** IP: IDF line~25 Invalid Number in Numeric Field#1 (Heating Sizing Factor), value=NONE, in SIZING:PARAMETERS
29.
30. ** Warning ** IP: Note -- Some missing fields have been filled with defaults. See the audit output file for details.
31.
32. ** ~~~ ** Possible Invalid Numerics or other problems
33.
34. ** Fatal ** IP: Errors occurred on processing IDF file. Preceding condition(s) cause termination.
35.
36. ...Summary of Errors that led to program termination:
37.
38. ..... Reference severe error count=1
39.
40. ..... Last severe error=IP: IDF line~
, value=NONE, in SIZING:PARAMETERS
41.
42. ************* Warning: Node connection errors not checked - most system input has not been read (see previous warning).
43.
44. ************* Fatal error -- final processing. Program exited before simulations began. See previous error messages.
45.
46. ************* EnergyPlus Warmup Error Summary. During Warmup: 0 Warning; 0 Severe Errors.
47.
48. ************* EnergyPlus Sizing Error Summary. During Sizing: 0 Warning; 0 Severe Errors.
49.
50. ************* EnergyPlus Terminated--Fatal Error Detected. 1 Warning; 1 Severe Errors; Elapsed Time=00hr 00min 9.34sec
51.…
up structural systems in the parametric environment of Grasshopper. Participants will be guided through the basics of analysing and interpreting structural models, to optimisation processes and how to integrate Karamba3d into C# scripts.
This workshop is aimed towards beginner to intermediate users of Karamba however advanced users are also encouraged to apply. It is open to both professional and academic users.
Course Fee:
Professional EUR 750 (+VAT)
Educational EUR 375 (+VAT)
Course Outline
Introduction & Presentation of project examples
Optimization of cross sections of line based and surface based elements
Geometric Optimization
Topological Optimization
Structural Performance Informed Form Finding
Understanding analysis algorithms embedded in Karamba and visualising results
Complex Workflow processes in Rhino3d, Grasshopper3d and Karamba3d
Places are limited to a maximum of 10 participants with limited educational places. A minimum of 4 places are required for the workshop to take place.
The workshop will be cancelled should this quota not be filled by May 31st.
The workshop will be taught in English. Basic Rhino and Grasshopper knowledge is recommended. No knowledge of Karamba is needed.
Participants should bring their own laptops with either Rhino5/Rhino6 and Grasshopper3d installed. A 90 day trial version of Rhino can be downloaded from Rhino3d.
Karamba ½ year licenses for non-commercial use will be provided to all participants.
…
up structural systems in the parametric environment of Grasshopper. Participants will be guided through the basics of analysing and interpreting structural models, to optimisation processes and how to integrate Karamba3d into C# scripts.
This workshop is aimed towards beginner to intermediate users of Karamba however advanced users are also encouraged to apply. It is open to both professional and academic users.
Course Fee:
Professional EUR 750 (+VAT)
Student EUR 375 (+VAT)
Course Outline
Introduction & Presentation of project examples
Optimization of cross sections of line based and surface based elements
Geometric Optimization
Topological Optimization
Structural Performance Informed Form Finding
Understanding analysis algorithms embedded in Karamba and visualising results
Complex Workflow processes in Rhino3d, Grasshopper3d and Karamba3d
Places are limited to a maximum of 10 participants with limited educational places. A minimum of 4 places are required for the workshop to take place.
The workshop will be cancelled should this quota not be filled by October 15th.
The workshop will be taught in English. Basic Rhino and Grasshopper knowledge is recommended. No knowledge of Karamba is needed.
Participants should bring their own laptops with either Rhino5/Rhino6 and Grasshopper3d installed. A 90 day trial version of Rhino can be downloaded from Rhino3d.
Karamba ½ year licenses for non-commercial use will be provided to all participants.
…
ive 'correct' normal.
Non-normalized cross products is effectively weighting face normals by area, and is fast and simple, so we put that one as the default.
In some cases normalizing the cross-products improves the result, but not always.
Another option is to weight by angles, though this is computationally slightly more expensive, so might not be ideal for real-time updates on large meshes.
As an example, here is a mesh with a 90° corner, and uneven meshing on the 2 sides.
The arrows show:
0- Area weighted (non-normalized cross products)
1- Angle weighted
2- Normalized cross-products
Here the angle-weighted normal is the one at 45°, which is intuitively the 'best' one in this case.
These 3 seem to be the most commonly used, but there are many other possible definitions of normals - such as inverse-area weighted, mean curvature, etc...
I think really what would be best would be to put a few of these into Plankton, and include an optional argument in GetNormal for selecting which one you need for a particular application.
Pull requests welcome if you feel inspired to add this!
http://meshlabstuff.blogspot.co.uk/2009/04/on-computation-of-vertex-normals.html
http://steve.hollasch.net/cgindex/geometry/surfnorm.html…
us allows Grasshopper authors to stream geometry to the web in real time. It works like a chatroom for parametric geometry, and allows for on-the-fly 3D model mashups in the web browser. Multiple [Grasshopper] authors can stream geometry into a shared 3D environment on the web – a Platypus Session – and multiple viewers can join that session on 3dplatyp.us to interact with the 3D model. Platypus can be used to present parametric 3D models to a remote audience, to quickly collaborate with other Grasshopper users, or both!
You can down load the Grasshopper plugin at food4rhino, and visit 3dplatyp.us to view your geometry on the web. This first round of Alpha testing will run for two weeks, until April 24 2014, after which the Grasshopper components will not solve.
We are very interested in hearing feedback from the community while the project is still in the prototyping stages of development. Please use the comments on this discussion to ask questions, suggest ideas, report bugs, etc. We are planning on rolling out another public alpha release or two this Spring, depending on how this first one goes, in advance of our Technology Symposium and Hackathon in New York.
Check out our getting started video below, and enjoy!
…