Grasshopper 0.8.0007 available for download

An incremental update is available for download from the usual page.

A Zip file without installer is also available.

Changes and additions:

The slider popup editor now has fields for Name and Expression.
Digit scrollers now have a text input button for single click text input.
Digit scrollers and Sliders embedded in menus can now be double-clicked for text input (not everywhere yet, I'm working on this).
Text input fields for digit scrollers and slider now have OK and Cancel buttons.
Slider Expressions now use "x" as the expression variable instead of the Slider Name.

Fixes:

Adding and removing objects while large groups were present was slow, this is fixed.
Recursive curve explode didn't work, this is fixed.
Kinks in nurbscurves were sometimes ignored by Curve Explode, this is fixed.
Curve fillets wouldn't work on curve seams, this is fixed.
Expressions could not handle single opening bracket string literals, this is fixed.
Coarse mesh settings preset component didn't work, this is fixed.
Long paths in the Last Ditch Save dialog were sometimes only partially displayed, this is fixed.

This release is a bit pre-mature, but since it contains several important fixes I didn't want to delay any longer.

If you have existing files that contain sliders with expressions, they will most likely generate errors now (unless you named the slider "x"). It should still work, but please update the expressions and replace the slider name with the variable "x" everywhere.

David Rutten

david@mcneel.com

Poprad, Slovakia

Replies to This Discussion

Permalink Reply by David Rutten on March 14, 2011 at 5:47pm

That is actually very difficult. You do know you can drag wires and the view will autopan when you go near/over the edges of the canvas right? You can also use the scrollwheel to zoom out and then in on your region of interest while dragging wires.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Mårten Nettelbladt on March 15, 2011 at 12:12am

Thanks David! That solves the problem. I didn't know I could do that... /Mårten

Permalink Reply by Miguel Jiménez on March 14, 2011 at 5:48pm

Hi everybody..

I've just downloaded the latest Grasshopper WIP, 8.0007. The problem I find was in performing any lexical operations, even the simplest. {A;B} INTO {B;A}

Does anybody else is having this problem??

And sure I have to get use to the new sliders. They look great but it take just to much time for me to manipulate them..

Thanks a lot.. great work.

Permalink Reply by David Rutten on March 15, 2011 at 4:29am

How would you like to manipulate them faster?

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Philipp on March 15, 2011 at 3:32am

heh. can somebody explain the aim of transformations and trasformation matrix?

and a propas - how to convert numbers like 331123e2231 to normal?

Permalink Reply by Danny Boyes on March 15, 2011 at 4:22am

Hi Philip,

have a read of the Essential Maths 2nd Edition, section 2 "Matricies and Transformations" on Page 16. http://download.rhino3d.com/en/Rhino/4.0/EssentialMathematicsSecond...

Also to view large numbers in normal notation you can use an expression like

Format("{0:0.00}",x) on an Fx component.

This uses the Format() function where {0} is the place holder for x and :0.00 within this is the format you want the number to be in this case 2 decimal places but it could be along the lines of #,##0.00 which will format it with commas where the number requires it, you could also combine it with some text, see below.

Permalink Reply by David Rutten on March 15, 2011 at 4:39am

All transformations in Rhino are performed via a Transformation Matrix. The 16 numbers in the matrix (actually only 15 are ever used) encode any combination of rotation, translation, scaling, shearing and tapering you care to imagine.

The beauty of a transformation matrix is that you can take two matrices (one representing a rotation and the other a translation say), multiply them together and end up with the combined transformation. This means that if you want to apply multiple modifications to geometry, you don't actually have to transform the geometry over and over again, you just have to combine the matrices, then perform a single transformation.

Because Transformation matrices are so easily represented by a list of numbers, they are also very useful for storing transformation data.

I do not know for what purpose they will be used, but since they are a very important data type in Rhino, I felt they should be represented in Grasshopper as well.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by David Rutten on March 15, 2011 at 4:40am

"how to convert numbers like 331123e2231 to normal?"

What is "normal"?

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by bobro on March 15, 2011 at 8:23am