Drawing rounded rects with individual corner radii

[pixtur]

Version/Branch of Dear ImGui:

Version 1.78, master

Back-ends:

imgui.net

Compiler, OS:

windows 10

Full config/build information:

No response

Details:

My Issue/Question:

Would it be possible to draw a rectangle with a different corner radius for each corner?

I'm frequently using...

IMGUI_API void AddRectFilled(const ImVec2& p_min, const ImVec2& p_max, ImU32 col, float rounding = 0.0f, ImDrawFlags flags = 0);

... but I would love to implement a segmented button that has no rounded corners at the joint. Something like this:

I’m aware that extensive styling is probably outside the scope of the master branch. However, there is...

IMGUI_API void AddRectFilledMultiColor(const ImVec2& p_min, const ImVec2& p_max, ImU32 col_upr_left, ImU32 col_upr_right, ImU32 col_bot_right, ImU32 col_bot_left);

... so adding an override for AddRectFilled with four different corner radii wouldn't be too much of a feature creep.

Screenshots/Video:

No response

Minimal, Complete and Verifiable Example code:

No response

[ocornut]

AddRectFilled() with rounding is simply PathRect() + PathFillConvex(), and PathRect() is simply 4 calls to PathArcToFast().
So you can easily implement your own in 5 lines of code:

PathArcToFast(...)
PathArcToFast(...)
PathArcToFast(...)
PathArcToFast(...)
PathFillConvex(col);

And then you can adjust the radius however you want.
It doesn't need a new function for this.....

However if you need to DISABLE rounding for certain corners we already have flags for this too and you can use e.g. ImDrawFlags_RoundCornersAll & ~ImDrawFlags_RoundCornersRight to disable rounding on the two right corners.

[ocornut]

I think the flags in the API in 1.76 were a little different ImDrawCornerFlags_xxx but same feature.

(1.76 is more than four years old please don't use it. :)

[pixtur]

Wow! Thanks a lot. That was was I was looking for.

(1.76 is more than four years old please don't use it. :)

I checked, and we're using 1.87.3. Sadly there was a minor breaking change in ImGui.net v1.88.
But I really need to update to the latest release.