scroll_indicator()

MAYAFLUX_API Form< glm::vec2 > MayaFlux::Portal::Forma::Geometry::scroll_indicator	(	Kinesis::AABB2D	track,
		glm::vec3	color = glm::vec3(0.5F, 0.5F, 0.55F)
	)

Geometry function for Scrollable's default scroll indicator visual.

Parameters

track	NDC region the bar travels within, the same region passed to Scrollable::indicator()'s own track parameter.
color	Bar fill color.

Definition at line 474 of file FormFactory.cpp.

{
    GeometryFn<glm::vec2> fn = [track, color](
                                   glm::vec2 extent, std::vector<uint8_t>& out, Element& el) {
        const float len = std::clamp(extent.y, 0.F, 1.F) * track.height();
        const float top = track.max.y - std::clamp(extent.x, 0.F, 1.F) * (track.height() - len);
        const Kinesis::AABB2D bar { .min = { track.min.x, top - len }, .max = { track.max.x, top } };
 
        write_verts(out, Kakshya::to_mesh_vertices(Kinesis::filled_rect(bar, color)));
 
        el.bounds_hint = track;
        el.contains = {};
    };
 
    return { std::move(fn),
        Graphics::PrimitiveTopology::TRIANGLE_STRIP,
        static_cast<size_t>(4) * sizeof(Kakshya::MeshVertex) };
}

References color, MayaFlux::Kinesis::AABB2D::contains(), MayaFlux::Kinesis::filled_rect(), MayaFlux::Kinesis::AABB2D::height(), MayaFlux::Kinesis::AABB2D::max, MayaFlux::Kinesis::AABB2D::min, out, MayaFlux::Kakshya::to_mesh_vertices(), MayaFlux::Portal::Graphics::TRIANGLE_STRIP, and write_verts().

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