BUG: Vertical Dimensions

Continuing to use Elefront a lot, I ran into another problem using Linear Dimension. In Rhino you can use a linear dimension to also be vertical, but in the Elefront component it seems that the P input only decided in which plane the text gets displayed, but not in which plane the dimension is taken and also the offset is wrong, going up, rather than outwards in the X-axis of the plane as expected.

Or did I misinterpret something. Surely this would be too large an oversight, if dimensions in Elefront only worked in the XY plane !?

Maybe someone can tell me how to do dimensions in all planes.

Thank you.

Attachments:

linear_dimension_vertical.gh, 3 KB

Replies to This Discussion

Permalink Reply by Ramon van der Heijden on April 6, 2017 at 7:46pm

Hi Armin,

So when making the comparison between the Grasshopper Dimension and the Elefront dimension, the "baseline" for grasshopper is the X-axis of the "P" for Elefront. In your example, you are measuring the distance between the points along the X-axis. In that direction, the distance is 0, as they are exactly above each other. Try specifying a ZX-plane instead and it will get you what you are looking for.

Using a plane instead of a baseline, gives the user just that bit more control over dimension alignment.

The offset is always determined in the Y-direction of the specified plane (as you would expect).

In either way, this is not a bug.

Attachments:

Linear Dimensions.gh, 5 KB

Permalink Reply by Armin Seltz on April 7, 2017 at 6:44am

Right, got it. I was thinking that if to measure along X you use an XY-plane, then to measure along Z you would use the XZ-plane, but of course it needs to be a ZX-plane. Oddly once you create one yourself in the way you do the data shows it as a "World ZX-plane", yet if you double-click you can only create a XZ-plane and not a ZX.

So in your logic of using the X-axis (ie. the first mentioned) axis to measure along and the second one to offset, it totally makes sense now. Its just strange that for measuring along X and Y you can use the standard planes of GH, but to measure along Z you need to create your own. Thinking about it I am not sure why the standard plane is called XZ and not ZX in GH. I'm sure there is a reason, but in this instance its unfortunate to not lend itself to be intuitive with the dimensions component.

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