Examples VisualizationCurves

Example: Curve Visualization

Demo: Visualize curves and edges in 3D view
Script: visualization_curve_script.py
Time: 1-2 minutes

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What It Demonstrates

• Pick edges from elements
• Extract location curves from walls
• Generate lines, arcs, and splines
• Display geometry in 3D view without creating model elements

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Key Pattern: Pick & Visualize Edge

from Autodesk.Revit.UI.Selection import ObjectType

print("Select an edge...")
ref = uidoc.Selection.PickObject(ObjectType.Edge, "Select an edge")

elem = doc.GetElement(ref)
edge = elem.GetGeometryObjectFromReference(ref)

if edge:
    print(edge)  # Auto-visualized in 3D view

Result:

• User picks edge in Revit
• Edge highlighted in 3D view
• Color-coded for visibility

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Key Pattern: Wall Location Curves

from Autodesk.Revit.DB import FilteredElementCollector, Wall

walls = FilteredElementCollector(doc).OfClass(Wall).ToElements()

print(f"Visualizing {len(walls)} wall location curves...")
for wall in walls:
    curve = wall.Location.Curve
    print(curve)  # Each curve appears in 3D

Result:

• All wall centerlines displayed
• No model elements created
• Clearable with "Clear" button

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Key Pattern: Generate Geometry

from Autodesk.Revit.DB import XYZ, Line, Arc

# Create lines
origin = XYZ(0, 0, 0)
end_point = XYZ(10, 10, 0)
line = Line.CreateBound(origin, end_point)
print(line)

# Create arc
center = XYZ(0, 0, 0)
radius = 5
arc = Arc.Create(center, radius, 0, Math.PI, XYZ.BasisX, XYZ.BasisY)
print(arc)

Result:

• Geometry generated programmatically
• Displayed immediately
• Useful for debugging calculations

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Try It Yourself

1. Load folder: source/RevitDevTool.PythonDemo/commands/
2. Execute visualization_curve_script.py
3. Pick edges when prompted (or ESC to skip)
4. See geometry in 3D view

Full source: visualization_curve_script.py

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Related Examples

• XYZ points → visualization_xyz_script.py
• Solids & faces → visualization_solid_script.py
• Data analysis → data_analysis_script.py