geom_elliptic_arc Struct Reference

Ellipse or elliptic arc. More...

#include <types.h>

Data Fields
geom_curve	curve
geom_point	center
	Center point.
real	rotation
	Rotation around the center point (CCW in radians).
real	a_radius
	X-axis radius (a_radius >= 0).
real	b_radius
	Y-axis radius (b_radius >= 0).
real	start
real	dif

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Detailed Description

Ellipse or elliptic arc.

Structure represents ellipse in standard form: x^2 / a_radius^2 + y^2 / b_radius^2 = 1, moved to stored center point and rotated CCW around this point. Special cases with zero radius (radii) are also supported (closure to affine transformations).

Parametric form of ellipse: x = a_radius * cos t, y = b_radius * sin t.

Section of ellipse (elliptic arc) is given by parameters subinterval.

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The documentation for this struct was generated from the following file:

• geomlib/types.h

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