If you want to learn how to do it yourself you can refer to their source code (it is quite heavy with templates, though). If your intent is to just be able to use GLSL math in C++, GLM is the way to do it.Classes, however, are private by default. Structs are public by default, no need in public here.Unlike in C, you shouldn't typedef structs in C++ - if you named your structs, you can refer to them using that name as type.Sorry, right now I can't test it, but I think that would do the trick. Anonymous structs are a non-standard extension that Microsoft added to their compiler. The only flags for g++ that could maybe make it compile your code are -fms-extensions and -fvisibility-ms-compat. Add -std=c++11 in your g++ compiler's arguments and this error will likely be gone. You can print the vectors for debugging with std::cout if you're not using an IDE as I did in gcc.Īs for "member with constructor not allowed in anonymous aggregate",, is due to compiler running in compliance with older standard, because as of C++11, unions can have members with non-trivial constructors (you defined your own constructor, so it's non-trivial, details about this can be found here). Of course, you can add/create more swizzlings. Inline std::ostream& operator<<(std::ostream &os, vec3 vec) To do this, we sample the volume and use the. Return vec_type(d = vec.x, d = vec.y, d = vec.z) Starting with 2D vector and sprite rendering, he quickly moved onto software.
![glm permute vector swizzle glm permute vector swizzle](https://i.stack.imgur.com/3EWqJ.png)
We use a vec_type in a template instead of forward declartions to prevent erros in some compilers. So this is my new and simple implementation template No command-lines neither using compiler-specific code. Well, I've found the solution myself using only the C++ Standards. OP has already posted an answer as a complete implementation of this idea. I think there is no standard solution to achieve vector swizzling perfectly.įor non-standard solution, one can use a proxy class without constructors instead of vec2 to make the compiler work.
![glm permute vector swizzle glm permute vector swizzle](https://forum.openframeworks.cc/uploads/default/original/2X/e/e74a247dbdb7c7bbdb7e5e0a0f0dbea3efbbfbe4.png)
In addition, aliasing vec2 with two floats would result in undefined behavior.
![glm permute vector swizzle glm permute vector swizzle](https://static.vecteezy.com/system/resources/previews/003/117/681/non_2x/stir-cooking-ingredient-linear-icon-vector.jpg)
Vec3(float a, float b, float c) : x(a), y(b), z(c) Īlthough this solution works, you can only access the members via, for example, v.xy.x, instead of simple v.x.