RTCSETGEOMETRYUSERDATA(3)

🎀 rtcSetGeometryUserData — a whole page from the Embree Ray Tracing Kernels 4 manual, bestie 💖

okay so picture this: you're deep in Embree land, you've got a geometry, and you really wanna staple your own little pointer to it so your callbacks can find their way home. That's literally this entire page. Let's go ✨

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✨ NAME ✨

rtcSetGeometryUserData — sets the user-defined data pointer of the geometry. That's it, that's the whole job, and it does it flawlessly 💅

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🌸 SYNOPSIS 🌸

#include <embree4/rtcore.h>

void rtcSetGeometryUserData(RTCGeometry geometry, void* userPtr);

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🦋 DESCRIPTION 🦋

So what does rtcSetGeometryUserData actually do, you ask? It sets the user-defined data pointer (that's the userPtr argument, bestie) for a geometry (the geometry argument, obviously 🫶).

The whole ~vibe~ of this pointer is that it's meant to be pointing at the application's own representation of the geometry. Then Embree just... hands it to various callback functions for you. Which is iconic, because it means inside those callbacks the application can use this pointer to go grab its own geometry representation — no extra lookup tables, no searching, no stress, no cap 😭👑

And if you ever need to peek at a pointer you already set? The rtcGetGeometryUserData function can be used to query an already set user data pointer of a geometry. Set it, get it, slay ✨

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💀 EXIT STATUS 💀

On failure an error code is set that can be queried using rtcGetDeviceError.

fr fr, if something goes sideways it does not just silently vibe — go check rtcGetDeviceError. iykyk 🙈

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👑 SEE ALSO 👑

• [rtcGetGeometryUserData]

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k that's the whole page, you ate it 💖 thanks for reading my little corner of the Embree Ray Tracing Kernels 4 manual — this was the rtcSetGeometryUserData(3) page, mwah, go forth and attach your user data 🎀🌸💅