Function RenderWindowOuterSingleBorder

src/imgui/imgui.cpp:6954–6962

}

static void RenderWindowOuterSingleBorder(ImGuiWindow* window, int border_n, ImU32 border_col, float border_size)
{
    const ImGuiResizeBorderDef& def = resize_border_def[border_n];
    const float rounding = window->WindowRounding;
    const ImRect border_r = GetResizeBorderRect(window, border_n, rounding, 0.0f);
    window->DrawList->PathArcTo(ImLerp(border_r.Min, border_r.Max, def.SegmentN1) + ImVec2(0.5f, 0.5f) + def.InnerDir * rounding, rounding, def.OuterAngle - IM_PI * 0.25f, def.OuterAngle);
    window->DrawList->PathArcTo(ImLerp(border_r.Min, border_r.Max, def.SegmentN2) + ImVec2(0.5f, 0.5f) + def.InnerDir * rounding, rounding, def.OuterAngle, def.OuterAngle + IM_PI * 0.25f);
    window->DrawList->PathStroke(border_col, ImDrawFlags_None, border_size);
}

static void ImGui::RenderWindowOuterBorders(ImGuiWindow* window)
{