filled_circle()

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

Filled circle as a TRIANGLE_LIST triangle fan.

Decomposes into (segments) triangles sharing a common center vertex. Minimum segments is 3; values below are clamped.

Parameters

center	Circle center in NDC.
radius	Radius in NDC units.
segments	Triangle count around the circumference.
color	Uniform fill color.

Definition at line 38 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::Vertex> out;
    out.reserve(static_cast<size_t>(segments) * 3);
 
    for (uint32_t i = 0; i < segments; ++i) {
        const float a0 = static_cast<float>(i) * step;
        const float a1 = static_cast<float>(i + 1) * step;
        out.push_back(vert2(center, color));
        out.push_back(vert2(ring_point(center, radius, a0), color));
        out.push_back(vert2(ring_point(center, radius, a1), color));
    }
 
    return out;
}