Circle/Centre,R
Circle by Centre and Radius
Creates a circle at a specified centre point with a given radius. No selector needed.
What It Does
The Circle/Centre,R operator creates a circle defined by a centre point and a radius. A centre and radius uniquely determine a circle — no selector is required.
Product Tier: Circles are persistent product entities.
Syntax
Circle/Centre, P, R, Z
Quick Input
C: [centre point reference]
R: [radius in mm]
Z: 0
Direction Selector
No direction selector required. The result is uniquely determined by the input geometry.
Worked Examples
P0 = (50, 50)
Circle/Centre, P0, R=25, 0
→ C0: centre=(50,50), radius=25
Circle/Centre, P0, R=10, 0
→ C1: centre=(50,50), radius=10 [concentric]
Analytic Rule
Circle equation: (x-cx)² + (y-cy)² = r²
Centre from point reference, radius as specified.
Result: Exact analytic circle.
FAQ
Can I create concentric circles?
Yes. Use the same centre point with different radius values.
How do I create a circle through a specific point?
Use Circle/3P or Circle/Tanto operators.