Point/Centre,C
Circle Centre Point
Creates a point at the exact centre of an existing circle.
What It Does
The Point/Centre,C operator creates a point at the exact geometric centre of an existing circle. The centre coordinates are read directly from the circle definition — no calculation is required.
Construction Tier: The created point is disposable. It is commonly used as a reference for subsequent geometry construction.
Syntax
Point/Centre, C, Z
Quick Input
C: [circle reference]
Z: 0
Direction Selector
No direction selector is required. The result is uniquely determined by the input geometry.
Worked Examples
Setup:
C0 = Circle at centre (50, 50), radius 25
Point/Centre, C0, 0
→ P1 = (50, 50)
Setup:
C1 = Circle at centre (120.5, 80.25), radius 10
Point/Centre, C1, 0
→ P2 = (120.5, 80.25)
Analytic Rule
Centre coordinates are stored as part of the circle definition.
Point/Centre reads cx and cy directly from the circle entity.
Result: Exact. No computation required.
FAQ
Why would I need a point at a circle centre?
Circle centres are commonly used as reference points for subsequent geometry — for example, creating lines through the centre, measuring distances between centres, or defining bolt-hole patterns.
Can I use this with an arc?
No. Use Point/Midpoint,A for arc midpoints. Arc centres are available in the Geometry Information Display but Point/Centre is specific to full circles.