EPOK RUNTIME

epok::screen_to_world

Function · 1 overload

Function

Exact inverse of world_to_screen up to Q12 rounding.

Belongs to: epok
Header: world2d.hpp
Overloads: 1

Declaration

inline void screen_to_world(const Camera2D& camera, const Fixed* screen_xy, Fixed* world_xy)

Exact inverse of world_to_screen up to Q12 rounding.

Parameter	Type	Meaning
`camera`	`const Camera2D &`	Value supplied for camera. Keep referenced or pointed-to data valid for the complete call.
`screen_xy`	`const Fixed *`	Value supplied for screen_xy. Keep referenced or pointed-to data valid for the complete call.
`world_xy`	`Fixed *`	Value supplied for world_xy. Keep referenced or pointed-to data valid for the complete call.

Returns: Nothing (void).

Example

C++ example

#include "world2d.hpp"

// Assume these named values have been initialized with valid data:
// const Camera2D & camera
// const Fixed * screen_xy
// Fixed * world_xy

epok::screen_to_world(camera, screen_xy, world_xy);

Why use it

It provides direct, allocation-conscious access to the world2d module. No exception-based error path is implied by the signature.

Trade-offs and warnings

Pointer/reference arguments are borrowed unless the source contract says otherwise; keep them valid for the complete operation and never assume null is accepted.

Declared in runtime/world2d.hpp:241

Related members

aabb_may_touchPerforms `aabb may touch` as part of bounded AABB collision queries and movement.Function template aabb_overlapPerforms `aabb overlap` as part of bounded AABB collision queries and movement.Function template aabb2d_containsPerforms `aabb2d contains` as part of the world2d module.Function aabb2d_overlapPerforms `aabb2d overlap` as part of the world2d module.Function aabb2d_touchPerforms `aabb2d touch` as part of the world2d module.Function aabb2d_translatedPerforms `aabb2d translated` as part of the world2d module.Function activate_texture_bankPerforms `activate texture bank` as part of the epok module.Function active_cameraPerforms `active camera` as part of the epok module.Function actor_for_slotPerforms `actor for slot` as part of the actor tables module.Function allocate_actor_dataPerforms `allocate actor data` as part of the epok module.Function attach_componentSpatial attachment between components of the same domain.Function audio_initializePerforms `audio initialize` as part of SPU sound playback and voice ownership.Function