Note for cmake ODE must build first then raylib due to config in ODE conflicts.

raylib 5.5 ode 0.16.6 flecs v4.1.1

KEY_C = enable/disable mouse orbiting mouse motion to rotate camera Q and E keys to rotate the camera’s yaw left and right

I kept it simple but with the raygui it easy to debug to control transform to update real time.

// Transform3D component
typedef struct {
    Vector3 position;         // Local position
    Quaternion rotation;      // Local rotation
    Vector3 scale;            // Local scale
    Matrix localMatrix;       // Local transform matrix
    Matrix worldMatrix;       // World transform matrix
 bool isDirty; // Flag to indicate if transform needs updating

This guide outlines how to set up a hierarchical 3D transformation system using Flecs 4.x, focusing on correct entity-component-system (ECS) configuration, transformation order, and parent-child relationships. It is tailored for AI agents and developers building 3D applications (e.g., with OpenGL or other rendering APIs) where entities have position, rotation, and scale, and transformations are propagated through a parent-child hierarchy.Key Concepts1. Flecs Basics

• Entities: Unique identifiers representing objects (e.g., a cube in a 3D scene).
• Components: Data structures attached to entities (e.g., Transform3D for position, rotation, scale).
• Systems: Functions that operate on entities with specific components, executed in a defined order (e.g., EcsPreUpdate, EcsOnUpdate).
• Pairs: Relationships between entities, used for hierarchies (e.g., (EcsChildOf, ParentEntity) to denote a child-parent relationship).

2. Hierarchical Transformat

Flecs: 4.1 Glad: 2.0.8 opengl: 330 sdl: 3.2 just sample test. cimgui: 1.92

This is just cube render set up test.

Sample test for getting the font working as cimgui conflict with font type from imgui.

rlgl_font.c main point.

raylib 5.5 cimgui