circle_outline()

MAYAFLUX_API std::vector< Kakshya::LineVertex > MayaFlux::Kinesis::circle_outline	(	glm::vec2	center,
		float	radius,
		uint32_t	segments,
		glm::vec3	color = glm::vec3(1.F),
		float	thickness = 1.F
	)

Circle outline as a LINE_LIST (closed loop, 2 * segments vertices).

Each segment is one line: [ring[i], ring[(i+1) % segments]]. Minimum segments is 3.

Parameters

center	Circle center in NDC.
radius	Radius in NDC units.
segments	Edge count around the circumference.
color	Uniform line color.
thickness	Line thickness (maps to LineVertex::thickness).

Definition at line 225 of file Geometry2D.cpp.

{
    segments = std::max<uint32_t>(segments, k_min_segments);
    const float step = glm::two_pi<float>() / static_cast<float>(segments);
 
    std::vector<Kakshya::LineVertex> out;
    out.reserve(static_cast<size_t>(segments) * 2);
 
    for (uint32_t i = 0; i < segments; ++i) {
        const float a0 = static_cast<float>(i) * step;
        const float a1 = static_cast<float>((i + 1) % segments) * step;
        out.push_back(lvert2(ring_point(center, radius, a0), color, thickness));
        out.push_back(lvert2(ring_point(center, radius, a1), color, thickness));
    }
 
    return out;
}