technical geometry questions

Is this true, that with rhinoceros AND grasshopper together the line thickness, the line colour and "an O-Shape of a point" can't be done?!!!

For these three things I need another plugin for rhinoceros?!!!

Thanks for the answer in advance.

Replies to This Discussion

Permalink Reply by David Rutten on April 28, 2013 at 12:31pm

Both Rhino and Grasshopper allow you to display curves with a specific colour. Only Rhino allows you to display a curve in a specific thickness. Both Rhino and Grasshopper allow you to display a curve with a specific dash-pattern. Neither Rhino nor Grasshopper allow you to use any symbol as a placeholder for points.

However, as mentioned before, it is possible to draw your own geometry in the viewport if you're writing VB, C# or Python code. Grasshopper does this for Fields and BiArcs for example. It draws custom arrows and symbols on the screen, aligned with the camera direction.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by David Rutten on April 28, 2013 at 12:47pm

I attached a simple (and very unoptimized) VB component which displays a set of curves with a given thickness and colour in the viewport. The symbol is camera aligned and always scaled to counter the perspective shortening.

The inputs are:

[P] the point in 3D space where to draw the symbol
[S] a list of curves representing the symbol. It's 5 circles in my example file, but you can replace them with any curves you like. The symbol input should be on the WorldXY plane, near the origin.
[C] the colour in which to draw each symbol (you can supply different colours for different points).
[T] the thickness (in pixels) of the symbol curves on screen.

I'm not sure if you can open the file on 0.9.0014, but if not then you will be able once 0.9.0050 is released.

David Rutten

david@mcneel.com

Poprad, Slovakia

Attachments:

CustomSymbol.gh, 6 KB

Permalink Reply by Ahmed Hossam on April 28, 2013 at 1:16pm

Thank you.

Let's say I have drawn a line in rhino with the help of grasshopper.

Can I change it's thickness with Rhino?

Permalink Reply by Chris Tietjen on April 28, 2013 at 2:34pm

You can change the display pixel width as above. You can also create a layout page and turn on print preview to view all the objects showing their individual print line widths, line types and print colors.

Permalink Reply by Ahmed Hossam on April 28, 2013 at 2:58pm

Is this only good for objects created in rhino or also for those, that are created with the help of grasshopper?

Permalink Reply by Frane Zilic on April 28, 2013 at 10:16pm

Once you bake GH geometry it becomes standard Rhino geometry so you won't see any difference

Permalink Reply by Frane Zilic on April 28, 2013 at 10:24pm

When I replied to you in this this post I was talking about a grasshopper plugin, not rhino plugin... Think of it as a new set of grasshopper components, new tools. There are a lot of GH plugins, most of them are at www.food4rhino.com

bye

Permalink Reply by Ahmed Hossam on April 29, 2013 at 3:37am

wow!! GH has also plugins ... wonderful!!! :D ... Is there any GH plugin, that has some curve or/and point properties components?!!! ...

Permalink Reply by Ahmed Hossam on April 29, 2013 at 3:38am

what is this plugin for GH called? And do I get it from www.food4rhino.com ?

Permalink Reply by Frane Zilic on April 29, 2013 at 7:10am

For plugins search the groups in this forum and food4rhino.

To deal with line thickness in GH you can use "Human" tools.

To display the points with different shapes use the component David posted above.

Permalink Reply by Ahmed Hossam on April 29, 2013 at 8:00am

So let's say I get human, then I can adjust the thickness of a line. Human is a plugin for GH.

To view the Point with different shapes, I should use the component David posted above ... This is a VB (Visual Basic) component ... Now is there any GH plugin, that provides both of these things?

Is there a GH plugin, that provides a component for the point symbols

(not VB ... some others?)?

Thank you ...

Permalink Reply by Florian Frank on April 29, 2013 at 9:25am