svg_arc_t Struct Reference

Centre-parametrisation of an SVG elliptical arc. More...

Data Fields
float	cx
	Centre X (user space).
float	cy
	Centre Y (user space).
float	rx
	Corrected semi-axis X.
float	ry
	Corrected semi-axis Y.
float	cos_phi
	cos(x-axis rotation).
float	sin_phi
	sin(x-axis rotation).
float	t1
	Start angle, radians.
float	dt
	Signed sweep, radians.
bool	ok
	False => degenerate (draw a line).

Detailed Description

Centre-parametrisation of an SVG elliptical arc.

Result of internal_arc_center – the centre, the (radius-corrected) semi-axes, the x-axis rotation (as cos/sin), and the start angle + signed sweep, ready to sample. ok is false for a degenerate arc (zero radius or coincident endpoints), in which case the caller draws a straight line.

Definition at line 700 of file reflow_svg_shape.c.

Field Documentation

cos_phi

float svg_arc_t::cos_phi

cos(x-axis rotation).

Definition at line 705 of file reflow_svg_shape.c.

Referenced by internal_arc_center(), internal_arc_solve(), and priv_ra8_svgp_flatten_arc().

cx

float svg_arc_t::cx

Centre X (user space).

Definition at line 701 of file reflow_svg_shape.c.

Referenced by internal_arc_solve(), and priv_ra8_svgp_flatten_arc().

cy

float svg_arc_t::cy

Centre Y (user space).

Definition at line 702 of file reflow_svg_shape.c.

Referenced by internal_arc_solve(), and priv_ra8_svgp_flatten_arc().

dt

float svg_arc_t::dt

Signed sweep, radians.

Definition at line 708 of file reflow_svg_shape.c.

Referenced by internal_arc_solve(), and priv_ra8_svgp_flatten_arc().

ok

bool svg_arc_t::ok

False => degenerate (draw a line).

Definition at line 709 of file reflow_svg_shape.c.

Referenced by internal_arc_center(), internal_arc_solve(), and priv_ra8_svgp_flatten_arc().

rx

float svg_arc_t::rx

Corrected semi-axis X.

Definition at line 703 of file reflow_svg_shape.c.

Referenced by internal_arc_solve(), and priv_ra8_svgp_flatten_arc().

ry

float svg_arc_t::ry

Corrected semi-axis Y.

Definition at line 704 of file reflow_svg_shape.c.

Referenced by internal_arc_solve(), and priv_ra8_svgp_flatten_arc().

sin_phi

float svg_arc_t::sin_phi

sin(x-axis rotation).

Definition at line 706 of file reflow_svg_shape.c.

Referenced by internal_arc_center(), internal_arc_solve(), and priv_ra8_svgp_flatten_arc().

t1

float svg_arc_t::t1

Start angle, radians.

Definition at line 707 of file reflow_svg_shape.c.

Referenced by internal_arc_solve(), and priv_ra8_svgp_flatten_arc().

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

• apps/shared_libs/reflow/src/reflow_svg_shape.c