3-Point Orient Without Preview in Rhino3D

This custom Rhino script provides a performance-optimised alternative to Rhino's native Orient3Pt command by eliminating the live transformation preview. It's ideal for working with complex or heavy geometry where real-time visual feedback can cause significant lag.

What Does It Do?

The 3-Point Orient Without Preview tool allows you to:

• Select a set of objects.
• Define a source plane using three reference points.
• Define a target plane using three target points.
• Instantly apply the transformation without any visual preview.

This matches Rhino’s standard Orient3Pt function in outcome but skips the display-intensive preview step, making it significantly faster for large models.

Why Use This Tool?

Rhino’s preview rendering during orientation can become unresponsive or slow when working with:

• Large-scale models
• Complex assemblies
• Lightweight hardware

By removing the preview stage, this tool provides a more responsive workflow while still maintaining full precision.

How to Use the Script

Load the Script in Rhino

Method 1:

1. Type _RunPythonScript into the command line.
2. Browse to and select your script file.

Method 2 Creating a Button or Alias (Optional)

Toolbar Button

1. Right-click an empty area of the toolbar and choose New Button.

2. In the Button Editor:

   • Left Button Command:

     ! _-RunPythonScript "FullPathToYourScript\orient3pt_no_preview.py"
     

     Replace FullPathToYourScript with the full path to your .py file.

   • Tooltip: 3-Point Orient without live preview.

Command Alias

1. Open Tools > Options > Aliases.

2. Add a new alias:

   • Alias: orient3np

   • Command Macro:

     _-RunPythonScript "FullPathToYourScript\orient3pt_no_preview.py"
     

Using the Command

1. Select one or more objects to orient.

2. Specify three reference points in the model:

   • These define the source plane.

3. Specify three target points:

   • These define the destination plane.

4. The selected objects will be instantly transformed from the source plane to the target plane—without any preview or intermediate redraw.

Use Cases

• Fast orientation of large building elements
• Repositioning geometry in modular assemblies
• Reducing interaction lag in high-polygon scenes