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Comments/fixes about using IMGUI_DEFINE_MATH_OPERATORS in imconfig.h (#9524)

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ocornut
2026-08-28 12:40:14 +02:00
parent 0af8f475d1
commit 1e51b6ffdc
2 changed files with 8 additions and 5 deletions
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5
imconfig.h
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@@ -114,8 +114,11 @@
constexpr ImVec4(const MyVec4& f) : x(f.x), y(f.y), z(f.z), w(f.w) {} \
operator MyVec4() const { return MyVec4(x,y,z,w); }
*/
//---- ...Or use Dear ImGui's own very basic math operators.
//---- ...Or use Dear ImGui's own basic math operators in every file including imgui.h:
//#ifndef IMGUI_DEFINE_MATH_OPERATORS
//#define IMGUI_DEFINE_MATH_OPERATORS
//#endif
//---- ...Or manually '#define IMGUI_DEFINE_MATH_OPERATORS' before '#include "imgui.h"' to use from one file.
//---- Use 32-bit vertex indices (default is 16-bit) is one way to allow large meshes with more than 64K vertices.
// Your renderer backend will need to support it (most example renderer backends support both 16/32-bit indices).

8
misc/single_file/imgui_single_file.h
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@@ -1,14 +1,14 @@
// dear imgui: single-file wrapper include
// We use this to validate compiling all *.cpp files in a same compilation unit.
// Users of that technique (also called "Unity builds") can generally provide this themselves,
// so we don't really recommend you use this in your projects.
// Users of that technique (also called "Unity builds") can generally provide this themselves easily.
// Do this:
// #define IMGUI_IMPLEMENTATION
// Before you include this file in *one* C++ file to create the implementation.
// #include "imgui_single_file.h"
// In *one* C++ file to create the implementation.
// Using this in your project will leak the contents of imgui_internal.h and ImVec2 operators in this compilation unit.
#ifdef IMGUI_IMPLEMENTATION
#if defined(IMGUI_IMPLEMENTATION) && !defined(IMGUI_DEFINE_MATH_OPERATORS)
#define IMGUI_DEFINE_MATH_OPERATORS
#endif