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Transform local coordinate system using feature's bounding box center as origin

alexlynch3450
Contributor
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Hello All,

I apologize if I am not making much sense, as I am new to 3d modeling.

I am having trouble trying to think of solution. I want to take spatial-vector data and output to local coordinate system. The local coordinate system, ideally, would be constraint to min and max extents of: -1m, -1m, 0.5m & 1m, 1m, 0.5m.

Right now, I am getting values larger than min and max extent when using localcoordinatesystemsetter X CommonLocalReprojector. I am not sure what I can do to equalize each x-, y-values in order to scale appropriately. Nor find transformer that I can input area-extent as min/max extent constraint. I am sure there is a mathematical formula, but am lost.

 

For example,

point-1_Local = -7.5403653628193155, -5.638463266998554, 0.5

point-1_LocalConstraint ~= -0.4817, -0.504, 0.5

 

point-2_Local = 7.502099056082192, 5.551721092860062, 0.5

point-2_LocalConstraint ~= 0.8439, 0.828, 0.5

 

2 replies

jakemolnar
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local_scale_example.fmw.zip

In case you want to have fine-grained control, here's a workspace that accumulates the 3D bounds of a dataset, moves features to the origin, scales each of the dimensions, and applies a final offset.

You could do this with a single 3DAffiner too, but this is easier to explain the steps.

This workspace is controlled by published parameters with defaults set to your specifications:

X_SCALE: 2 (the distance between -1 and 1)

Y_SCALE: 2 (the distance between -1 and 1)

Z_SCALE: 0 (the distance between 0.5 and 0.5)

X_OFFSET: 0 (features centered on x=0)

Y_OFFSET: 0 (features centered on y=0)

Z_OFFSET: 0.5 (features centered on z=0.5)

 

alexlynch3450
Contributor
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  • alexlynch3450Contributor
  • Author
  • Contributor
  • March 17, 2020
jakemolnar wrote:

local_scale_example.fmw.zip

In case you want to have fine-grained control, here's a workspace that accumulates the 3D bounds of a dataset, moves features to the origin, scales each of the dimensions, and applies a final offset.

You could do this with a single 3DAffiner too, but this is easier to explain the steps.

This workspace is controlled by published parameters with defaults set to your specifications:

X_SCALE: 2 (the distance between -1 and 1)

Y_SCALE: 2 (the distance between -1 and 1)

Z_SCALE: 0 (the distance between 0.5 and 0.5)

X_OFFSET: 0 (features centered on x=0)

Y_OFFSET: 0 (features centered on y=0)

Z_OFFSET: 0.5 (features centered on z=0.5)

 

YOU NAILED IT! Thank you very much!

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