Method drawLine

source/windowing/StarGuiContext.cpp:177–185

}

void GuiContext::drawLine(Vec2F const& begin, Vec2F const end, Vec4B const& color, float lineWidth) {
  Vec2F left = vnorm(Vec2F(end) - Vec2F(begin)).rot90() * lineWidth / 2.0f;
  renderer()->immediatePrimitives().emplace_back(std::in_place_type_t<RenderQuad>(),
    begin + left,
    begin - left,
    end - left,
    end + left,
    color, 0.0f);
}

void GuiContext::drawPolyLines(PolyF const& poly, Vec4B const& color, float lineWidth) {
  for (size_t i = 0; i < poly.sides(); ++i)