revising geometry

radiance-general
1

Hello:

If I intend to revise the model in Radiance, I need to know the coordinate
so that I can transform or generate new geometry.

My current methods of checking coordinates are
(1) using rvu option "trace" to see the coordinate of the image.
(2) export rad to other software to view the geometry (I saw a recent post
by
Randolph to discuss about "Radiance Geometry Export", but I have not tried)

Is there a better way to show the x, y z axis in the image of Radiance and
easily check the
coordinate? What is your practice of adding or revising geometry in
Radiance?

Thank you for sharing your experience,
Jia

2

Hi Jia,

How did you create your geometry? What kinds of changes are you trying to make? Depending on the extend of the changes, updates or modifications it probably makes much more sense to use a 3D modeling application to make these changes and then re-export the geometry to Radiance.

Regards,

-Jack de Valpine

···

--
# Jack de Valpine
# president
#
# visarc incorporated
# http://www.visarc.com
#
# channeling technology for superior design and construction

Jia Hu wrote:

Hello:
If I intend to revise the model in Radiance, I need to know the coordinate so that I can transform or generate new geometry.
My current methods of checking coordinates are
(1) using rvu option "trace" to see the coordinate of the image.
(2) export rad to other software to view the geometry (I saw a recent post by
Randolph to discuss about "Radiance Geometry Export", but I have not tried)
Is there a better way to show the x, y z axis in the image of Radiance and easily check the
coordinate? What is your practice of adding or revising geometry in Radiance?
Thank you for sharing your experience,
Jia
------------------------------------------------------------------------

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Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

3

Hello Jack:

I create the majority part of the geometry in Revit and then export the
geometry to Radiance. In Radiance, I will add some other geometries (not
complicated), such as lighting, blinds , simple furniture and windows.
Another reason I want to know the coordinates is that when I adjust
some view parameters such as the view point I also need to know the
coordinate.

Thank you,

Jia

···

On Thu, Jul 15, 2010 at 4:07 PM, Jack de Valpine <[email protected]> wrote:

Hi Jia,

How did you create your geometry? What kinds of changes are you trying to
make? Depending on the extend of the changes, updates or modifications it
probably makes much more sense to use a 3D modeling application to make
these changes and then re-export the geometry to Radiance.

Regards,

-Jack de Valpine

--
# Jack de Valpine
# president
#
# visarc incorporated
# http://www.visarc.com
#
# channeling technology for superior design and construction

Jia Hu wrote:

Hello:
If I intend to revise the model in Radiance, I need to know the
coordinate so that I can transform or generate new geometry.
My current methods of checking coordinates are
(1) using rvu option "trace" to see the coordinate of the image.
(2) export rad to other software to view the geometry (I saw a recent post
by
Randolph to discuss about "Radiance Geometry Export", but I have not
tried)
Is there a better way to show the x, y z axis in the image of Radiance
and easily check the
coordinate? What is your practice of adding or revising geometry in
Radiance?
Thank you for sharing your experience,
Jia
------------------------------------------------------------------------

_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

4

If you have a rad file of a piece of furniture, with the furniture origin at 0,0,0, but you want to array it within your model, try the following xform command. Check the manpage of xform and adjust parameters as needed. The rad file to define your individual item must be in the same directory. This example makes a 2x3 array with 40x70 unit spacing starting at x,y,z of 500,200,0. Scripting makes this an easy way to vary your furniture or lighting layout. Leave off the ! if you run xform yourself or directly from a script, or keep the initial ! for the following line within a rad file of its own to include with your scene. Use multiple xform commands with only the first "-t x y z" if your added geometry is not a neat and tidy array.

!xform -t 500 200 0 -a 2 -t 40 0 0 -a 3 -t 0 70 0 singlefurniture.rad

···

From: [email protected] [mailto:[email protected]] On Behalf Of Jia Hu
Sent: Thursday, July 15, 2010 4:16 PM
To: Radiance general discussion
Subject: Re: [Radiance-general] revising geometry

Hello Jack:

I create the majority part of the geometry in Revit and then export the geometry to Radiance. In Radiance, I will add some other geometries (not complicated), such as lighting, blinds , simple furniture and windows. Another reason I want to know the coordinates is that when I adjust some view parameters such as the view point I also need to know the coordinate.

Thank you,

Jia
On Thu, Jul 15, 2010 at 4:07 PM, Jack de Valpine <[email protected]<mailto:[email protected]>> wrote:
Hi Jia,

How did you create your geometry? What kinds of changes are you trying to make? Depending on the extend of the changes, updates or modifications it probably makes much more sense to use a 3D modeling application to make these changes and then re-export the geometry to Radiance.

Regards,

-Jack de Valpine

--
# Jack de Valpine
# president
#
# visarc incorporated
# http://www.visarc.com<http://www.visarc.com/>
#
# channeling technology for superior design and construction

Jia Hu wrote:
Hello:
If I intend to revise the model in Radiance, I need to know the coordinate so that I can transform or generate new geometry.
My current methods of checking coordinates are
(1) using rvu option "trace" to see the coordinate of the image.
(2) export rad to other software to view the geometry (I saw a recent post by
Randolph to discuss about "Radiance Geometry Export", but I have not tried)
Is there a better way to show the x, y z axis in the image of Radiance and easily check the
coordinate? What is your practice of adding or revising geometry in Radiance?
Thank you for sharing your experience,
Jia
------------------------------------------------------------------------

_______________________________________________
Radiance-general mailing list
[email protected]<mailto:[email protected]>
http://www.radiance-online.org/mailman/listinfo/radiance-general

_______________________________________________
Radiance-general mailing list
[email protected]<mailto:[email protected]>
http://www.radiance-online.org/mailman/listinfo/radiance-general

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5

Hi Jia,

I have never used Revit, but if it really does not show the model vertex coordinates or if it changes them during export, you should still find out by wrapping you scene into a cube that you can use as a reference coordinate system. Create a simple cube of e.g. 100m x 100m x 100m so that all you model is inside, and find the reference point of you model (usually you will have some reference point that is known and used for the plans). Get the coordinates of the reference point relative to the corners of the cube. Then import the scene into Radiance and get the bounding cube of the scene (getbbox yourmodel.rad). This should give you the coordinates of the cube after import into Radiance, at least unless Revit rotated or scaled the model during export. From these you can find the reference point's coordinates in the Radiance scene. Still, really strange if there is no simple way to keep the coordinates from Revit and read them out from the CAD...

Cheers, Lars.

6

Hi Jia Hu

Is there a better way to show the x, y z axis in the image of Radiance and
easily check the
coordinate? What is your practice of adding or revising geometry in
Radiance?

It seems that Radiance's replmarks is exactly what you need. Create your model in your favourite CAD package. For all objects that you wish to add later, create a triangle and export it, too. Then use replmarks to replace all triangle markers with your additional geometry, such as blinds. No need to know extract exact co-ordiantes with rvu.

Axel

7

Thank you all. I will try and research all your suggestions.

Cheers,
Jia

···

On Thu, Jul 15, 2010 at 5:08 PM, Axel Jacobs <[email protected]> wrote:

Hi Jia Hu

Is there a better way to show the x, y z axis in the image of Radiance and

easily check the
coordinate? What is your practice of adding or revising geometry in
Radiance?

It seems that Radiance's replmarks is exactly what you need. Create your
model in your favourite CAD package. For all objects that you wish to add
later, create a triangle and export it, too. Then use replmarks to replace
all triangle markers with your additional geometry, such as blinds. No need
to know extract exact co-ordiantes with rvu.

Axel

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Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

8

This is a file (coord) included in the ray/obj/lib0 directory of the standard distribution:

···

#
# Test coordinate system
#
# The idea is to include this with an
# object in order to see its orientation
# and size.
#
# Each coordinate axis is one unit long.
#
# The x-axis has a red tip, the y-axis
# has a green tip, and the z-axis has
# a blue tip.
#

void plastic black
0
5 .05 .05 .05 .05 .05

void plastic white
0
5 .8 .8 .8 .05 .05

void plastic red
0
5 .8 .05 .05 .05 .05

void plastic green
0
5 .05 .8 .05 .05 .05

void plastic blue
0
5 .05 .05 .8 .05 .05

white sphere origin
0
4 0 0 0 .15

black cylinder x-axis
0
7
         0 0 0
         .8 0 0
         .05

red cone x-arrow
0
8
         .75 0 0
         1 0 0
         .15 0

black cylinder y-axis
0
7
         0 0 0
         0 .8 0
         .05

green cone y-arrow
0
8
         0 .75 0
         0 1 0
         .15 0

black cylinder z-axis
0
7
         0 0 0
         0 0 .8
         .05

blue cone z-arrow
0
8
         0 0 .75
         0 0 1
         .15 0

---------
-Greg

From: Jia Hu <[email protected]>
Date: July 15, 2010 12:48:01 PM PDT

Hello:

If I intend to revise the model in Radiance, I need to know the coordinate so that I can transform or generate new geometry.

My current methods of checking coordinates are
(1) using rvu option "trace" to see the coordinate of the image.
(2) export rad to other software to view the geometry (I saw a recent post by
Randolph to discuss about "Radiance Geometry Export", but I have not tried)

Is there a better way to show the x, y z axis in the image of Radiance and easily check the
coordinate? What is your practice of adding or revising geometry in Radiance?

Thank you for sharing your experience,
Jia

9

Thank you, Greg. It is very useful.

···

On Mon, Jul 19, 2010 at 2:00 AM, Greg Ward <[email protected]> wrote:

This is a file (coord) included in the ray/obj/lib0 directory of the
standard distribution:

#
# Test coordinate system
#
# The idea is to include this with an
# object in order to see its orientation
# and size.
#
# Each coordinate axis is one unit long.
#
# The x-axis has a red tip, the y-axis
# has a green tip, and the z-axis has
# a blue tip.
#

void plastic black
0
0
5 .05 .05 .05 .05 .05

void plastic white
0
0
5 .8 .8 .8 .05 .05

void plastic red
0
0
5 .8 .05 .05 .05 .05

void plastic green
0
0
5 .05 .8 .05 .05 .05

void plastic blue
0
0
5 .05 .05 .8 .05 .05

white sphere origin
0
0
4 0 0 0 .15

black cylinder x-axis
0
0
7
       0 0 0
       .8 0 0
       .05

red cone x-arrow
0
0
8
       .75 0 0
       1 0 0
       .15 0

black cylinder y-axis
0
0
7
       0 0 0
       0 .8 0
       .05

green cone y-arrow
0
0
8
       0 .75 0
       0 1 0
       .15 0

black cylinder z-axis
0
0
7
       0 0 0
       0 0 .8
       .05

blue cone z-arrow
0
0
8
       0 0 .75
       0 0 1
       .15 0

---------
-Greg

From: Jia Hu <[email protected]>
Date: July 15, 2010 12:48:01 PM PDT

Hello:

If I intend to revise the model in Radiance, I need to know the coordinate
so that I can transform or generate new geometry.

My current methods of checking coordinates are
(1) using rvu option "trace" to see the coordinate of the image.
(2) export rad to other software to view the geometry (I saw a recent post
by
Randolph to discuss about "Radiance Geometry Export", but I have not
tried)

Is there a better way to show the x, y z axis in the image of Radiance and
easily check the
coordinate? What is your practice of adding or revising geometry in
Radiance?

Thank you for sharing your experience,
Jia

_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general