Function ImBezierCubicClosestPointCasteljau

tutorials/common/imgui/imgui.cpp:1559–1567

tess_tol is generally the same value you would find in ImGui::GetStyle().CurveTessellationTol Because those ImXXX functions are lower-level than ImGui:: we cannot access this value automatically.

// tess_tol is generally the same value you would find in ImGui::GetStyle().CurveTessellationTol
// Because those ImXXX functions are lower-level than ImGui:: we cannot access this value automatically.
ImVec2 ImBezierCubicClosestPointCasteljau(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, const ImVec2& p, float tess_tol)
{
    IM_ASSERT(tess_tol > 0.0f);
    ImVec2 p_last = p1;
    ImVec2 p_closest;
    float p_closest_dist2 = FLT_MAX;
    ImBezierCubicClosestPointCasteljauStep(p, p_closest, p_last, p_closest_dist2, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, p4.x, p4.y, tess_tol, 0);
    return p_closest;
}

ImVec2 ImLineClosestPoint(const ImVec2& a, const ImVec2& b, const ImVec2& p)
{