Util.h

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#pragma once
// These are internal helper functions

#include <imgui.h>

#include <string>
#include <vector>

namespace open3d {
namespace visualization {
namespace gui {

class Color;

// These functions are here, because ImVec4 requires imgui.h, and can't be
// forward-declared because we need to know the size, since it is a return
// value. Since imgui.h is an implementation detail, we can't put this function
// in Color or it would pull in imgui.h pretty much everywhere that gui is used.
ImVec4 colorToImgui(const Color& color);
uint32_t colorToImguiRGBA(const Color& color);

}  // namespace gui
}  // namespace visualization
}  // namespace open3d