RAYGIZMO

raygizmo was designed as an auxiliar module for raylib to create simple interactive gizmo gadget to perform basic object transformation (rotation and translation).

NOTE: raygizmo is a single-file header-only library (despite its internal dependency on raylib), so, functions definition AND implementation reside in the same file raygizmo.h, when including raygizmo.h in a module, RAYGIZMO_IMPLEMENTATION must be previously defined to include the implementation part of raygizmo.h BUT only in one compilation unit, other modules could also include raygizmo.h but RAYGIZMO_IMPLEMENTATION must not be defined again.

NOTE: Current raygizmo implementation is intended to work with raylib-5.0 and PLATFORM_DESKTOP

Example

In a simplest case gizmo can be used like this:

#define RAYGIZMO_IMPLEMENTATION
#include "raygizmo.h"

int main(void) {
    InitWindow(800, 450, "raygizmo");

    Camera3D camera;
    camera.fovy = 45.0f;
    camera.target = (Vector3){0.0f, 0.0f, 0.0f};
    camera.position = (Vector3){5.0f, 5.0f, 5.0f};
    camera.up = (Vector3){0.0f, 1.0f, 0.0f};
    camera.projection = CAMERA_PERSPECTIVE;

    Model model = LoadModelFromMesh(GenMeshTorus(0.3, 1.5, 16.0, 16.0));
    RGizmo gizmo = rgizmo_create();

    while (!WindowShouldClose()) {
        BeginDrawing();
        {
            Vector3 position = {
                model.transform.m12, model.transform.m13, model.transform.m14};
            rgizmo_update(&gizmo, camera, position);
            model.transform = MatrixMultiply(model.transform, rgizmo_get_tranform(gizmo, position));
            
            ClearBackground(BLACK);
            rlEnableDepthTest();

            BeginMode3D(camera);
            {
                DrawModel(model, (Vector3){0.0, 0.0, 0.0}, 1.0, PURPLE);
            }
            EndMode3D();

            rgizmo_draw(gizmo, camera, position);
        }
        EndDrawing();
    }

    rgizmo_unload();
    UnloadModel(model);
    CloseWindow();

    return 0;
}

More complex example could be built and run like this (make sure you have libraylib and raylib headers in your lib and include paths):

gcc -o ./examples/raygizmo ./examples/raygizmo.c -lraylib -lm -lpthread -ldl && ./examples/raygizmo