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N_GUI_CTX Struct N_GUI_CUSTOM_DATA Struct N_GUI_DATAGRID_COL Struct N_GUI_DATAGRID_DATA Struct N_GUI_DROPMENU_DATA Struct N_GUI_DROPMENU_ENTRY Struct N_GUI_GRID_CALLBACKS Struct N_GUI_HEXVIEW_DATA Struct N_GUI_IMAGE_DATA Struct N_GUI_KVTABLE Struct N_GUI_KV_CONTENT Struct N_GUI_KV_ROW Struct N_GUI_LABEL_DATA Struct N_GUI_LISTBOX_DATA Struct N_GUI_LISTITEM Struct N_GUI_MARKDOWNVIEW_DATA Struct N_GUI_MD_FONTS Struct N_GUI_MD_STYLE Struct N_GUI_MEAS_ENTRY Struct N_GUI_MOUSE_EVENT Struct N_GUI_PENDING_GEOM Struct N_GUI_PENDING_WIDGET Struct N_GUI_POPUP Struct N_GUI_PROGRESSBAR_DATA Struct N_GUI_RADIOLIST_DATA Struct N_GUI_SB_TRACK Struct N_GUI_SCROLLBAR_DATA Struct N_GUI_SECTION Struct N_GUI_SECTIONLIST Struct N_GUI_SLIDER_DATA Struct N_GUI_SPLITPANE_DATA Struct N_GUI_STYLE Struct N_GUI_SUGGEST_SINK Struct N_GUI_SYNTAXVIEW_DATA Struct N_GUI_TAB_PANEL Struct N_GUI_TB_BUTTONS Struct N_GUI_TEXTAREA_DATA Struct N_GUI_TEXT_DIMS Struct N_GUI_THEME Struct N_GUI_TREE Struct N_GUI_TREE_NODE Struct 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Struct N_STR Struct N_TIFF Struct N_TIFF_ENTRY Struct N_TIME Struct N_URL Struct N_URL_PARAM Struct N_USER Struct N_USERLIST Struct N_WS_CONN Struct N_WS_FRAME Struct N_WS_MESSAGE Struct N_ZIP_MEMBER Struct OCTREE Struct OCTREE_NODE Struct PARSER Struct PARTICLE Struct PARTICLE_EMITTER Struct PARTICLE_SYSTEM Struct PEER Struct PHYSICS Struct PK_OBJ Struct PK_VM Struct POINT2D Struct POINT3D Struct PRETTY_OUT Struct QNODE Struct QUADTREE Struct QUADTREE_NODE Struct REC Struct RGB Struct SAMPLE Struct SEEN Struct SHARER Struct SRV Struct SRV_ARG Struct STACK Struct STACK_ITEM Struct SYNTAX_RUN Struct THREAD_POOL Struct THREAD_POOL_NODE Struct THREAD_WAITING_PROC Struct TRAJECTORY Struct TRAJECTORY_POINT Struct TREE Struct TREE_NODE Struct TS_LOG Struct WAYPOINT3D Struct WORKER_ARG Struct ZIP_SINK Struct _N_DC_ENTRY Struct _N_DC_GROUP_ENTRY Struct _N_GUI_COLORWHEEL Struct _N_GUI_COLORWHEEL_BLOCK Struct _N_GUI_COLORWHEEL_MOUSE Struct _N_GUI_CURVE Struct _N_GUI_CURVE_BLOCK Struct _N_GUI_CURVE_MOUSE Struct _N_GUI_GRID Struct _N_GUI_POPUP_ENTRY Struct _N_GUI_POPUP_LEVEL Struct _N_GUI_SB_SKIN Struct _N_GUI_TA_STEP Struct _N_GUI_THUMB Struct _N_GUI_WRAP_ACC Struct _compiled Struct _conn Struct _ip_slot Struct _mp_param Struct _n_civil Struct _seg Struct client Struct collector Struct date_vector Struct md_atom Struct md_cells Struct md_hit Struct md_line_ctx Struct mline Struct n_http_req_header Struct n_http_req_limits Struct n_http_request Struct n_markdown_block Struct n_markdown_doc Struct n_markdown_inline Struct n_markdown_span Struct n_reactor_stats Struct n_url_safe Struct n_url_safe_head Struct n_wrap_item Struct producer_state Struct rects Struct reply Struct runner Struct sink Struct tbuf Struct wrap_hit Struct wrap_span Structures Union COORD_VALUE Union HASH_DATA Union NODE_DATA_TYPES Union STACK_DATA dir_310dcdd4703e877a6b99d5dc3fc54d27 dir_68267d1309a1af8e8297ef4c3efbcdba dir_d28a4824dc47e487b107a5db32ef43c4 dir_d44c64559bbebec7f509842c48db8b23 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ex_base64_8c example ex_clock_sync_8c example ex_common_8c example ex_configfile_8c example ex_cookies_8c example ex_crypto_8c example ex_diff_8c example ex_digest_8c example ex_disk_cache_8c example ex_dns_8c example ex_ecc_8c example ex_entropy_8c example ex_exceptions_8c example ex_file_8c example ex_file_copy_8c example ex_fluid_8c example ex_fluid_config_8c example ex_fluid_config_8h example ex_git_8c example ex_gui_8c example ex_gui_bench_8c example ex_gui_button_keys_8c example ex_gui_checkbox_label_8c example ex_gui_checkbox_release_8c example ex_gui_color_picker_8c example ex_gui_colorwheel_8c example ex_gui_combobox_items_8c example ex_gui_combobox_wheel_8c example ex_gui_cursor_8c example ex_gui_curve_8c example ex_gui_custom_8c example ex_gui_custom_mouse_8c example ex_gui_datagrid_8c example ex_gui_datagrid_keys_8c example ex_gui_datagrid_sort_8c example ex_gui_detach_8c example ex_gui_dictionary_8c example ex_gui_display_fallback_8c example ex_gui_double_click_8c example ex_gui_dropmenu_8c example ex_gui_frameless_drag_8c example ex_gui_global_scroll_8c example ex_gui_glyph_8c example ex_gui_grid_8c example ex_gui_hexview_8c example ex_gui_hover_8c example ex_gui_isometric_8c example ex_gui_kvtable_8c example ex_gui_label_fits_8c example ex_gui_label_lines_8c example ex_gui_layout_persist_8c example ex_gui_listbox_8c example ex_gui_md_8c example ex_gui_multiwin_8c example ex_gui_network_8c example ex_gui_particles_8c example ex_gui_placeholder_8c example ex_gui_popup_8c example ex_gui_progressbar_8c example ex_gui_reentrant_8c example ex_gui_round_8c example ex_gui_sectionlist_8c example ex_gui_slider_default_8c example ex_gui_slider_handle_8c example ex_gui_slider_step_8c example ex_gui_splitpane_8c example ex_gui_suggest_8c example ex_gui_syntaxview_8c example ex_gui_text_shorten_8c example ex_gui_textarea_selection_8c example ex_gui_tooltip_8c example ex_gui_tree_lazy_8c example ex_gui_tree_order_8c example ex_gui_tree_state_8c example ex_gui_window_rect_8c example ex_gui_zorder_8c example ex_hash_8c example ex_hex_8c example ex_html_8c example ex_http2_8c example ex_http2_server_8c example ex_http_cookie_8c example ex_http_form_8c example ex_http_mime_8c example ex_http_req_8c example ex_http_response_8c example ex_http_router_8c example ex_http_server_8c example ex_icc_8c example ex_iso_astar_8c example ex_json_8c example ex_kafka_8c example ex_linalg_8c example ex_list_8c example ex_log_8c example ex_markdown_8c example ex_module_8c example ex_monolith_8c example ex_network_8c example ex_network_8h example ex_network_accept_8c example ex_network_alpn_8c example ex_network_connect_abort_8c example ex_network_mock_8c example ex_network_proxy_8c example ex_network_reactor_8c example ex_network_sni_8c example ex_network_sse_8c example ex_network_ssl_8c example ex_network_ssl_hardened_8c example ex_network_ssl_hostname_8c example ex_network_ssl_nonblock_8c example ex_network_tls_defaults_8c example ex_network_ws_8c example ex_network_ws_limits_8c example ex_nstr_8c example ex_parallel_for_8c example ex_parallel_team_8c example ex_pcre_8c example ex_pretty_8c example ex_pth_8c example ex_query_8c example ex_random_8c example ex_sha256_8c example ex_signals_8c example ex_spawn_8c example ex_ssrf_8c example ex_stack_8c example ex_threads_8c example ex_tiff_8c example ex_time_formats_8c example ex_trajectory_8c example ex_trees_8c example ex_url_8c example ex_url_safe_8c example ex_wrap_8c example ex_x509_8c example ex_zip_8c example ex_zlib_8c example mainpage_8dox n__3d_8c n__3d_8h n__aabb_8c n__aabb_8h n__allegro5_8c n__allegro5_8h n__allegro__4_8c n__allegro__4_8h n__anim_8c n__anim_8h n__astar_8c n__astar_8h n__atlas_8c n__atlas_8h n__avro_8c n__avro_8h n__base64_8c n__base64_8h n__clipboard_8c n__clipboard_8h n__clock__sync_8c n__clock__sync_8h n__common_8c n__common_8h n__config__file_8c n__config__file_8h n__cookies_8c n__cookies_8h n__crypto_8c n__crypto_8h n__dead__reckoning_8c n__dead__reckoning_8h n__diff_8c n__diff_8h n__digest_8c n__digest_8h n__disk__cache_8c n__disk__cache_8h n__dns_8c n__dns_8h n__ecc_8c n__ecc_8h n__entropy_8c n__entropy_8h n__enum_8h n__exceptions_8c n__exceptions_8h n__files_8c n__files_8h n__fluids_8c n__fluids_8h n__games_8c n__games_8h n__git_8c n__git_8h n__gui_8c n__gui_8h n__gui__color_8c n__gui__color_8h n__gui__colorwheel_8c n__gui__colorwheel_8h n__gui__curve_8c n__gui__curve_8h n__gui__grid_8c n__gui__grid_8h n__gui__md_8c n__gui__md_8h n__gui__popup_8c n__gui__popup_8h n__hash_8c n__hash_8h n__hex_8c n__hex_8h n__html_8c n__html_8h n__http2_8c n__http2_8h n__http2__server_8c n__http2__server_8h n__http3_8c n__http3_8h n__http__cookie_8c n__http__cookie_8h n__http__form_8c n__http__form_8h n__http__mime_8c n__http__mime_8h n__http__req_8c n__http__req_8h n__http__response_8c n__http__response_8h n__http__router_8c n__http__router_8h n__http__server_8c n__http__server_8h n__icc_8c n__icc_8h n__iso__engine_8c n__iso__engine_8h n__json_8c n__json_8h n__kafka_8c n__kafka_8h n__linalg_8c n__linalg_8h n__list_8c n__list_8h n__log_8c n__log_8h n__lz4_8c n__lz4_8h n__markdown_8c n__markdown_8h n__module_8c n__module_8h n__network_8c n__network_8h n__network__accept__pool_8c n__network__accept__pool_8h n__network__msg_8c n__network__msg_8h n__nodup__log_8c n__nodup__log_8h n__openssl__compat_8h n__particles_8c n__particles_8h n__pcre_8c n__pcre_8h n__pretty_8c n__pretty_8h n__pth_8c n__pth_8h n__query_8c n__query_8h n__random_8c n__random_8h n__reactor_8c n__reactor_8h n__sha256_8c n__sha256_8h n__signals_8c n__signals_8h n__ssrf_8c n__ssrf_8h n__stack_8c n__stack_8h n__str_8c n__str_8h n__thread__pool_8c n__thread__pool_8h n__tiff_8c n__tiff_8h n__time_8c n__time_8h n__trajectory_8c n__trajectory_8h n__trees_8c n__trees_8h n__url__safe_8c n__url__safe_8h n__user_8c n__user_8h n__windows_8h n__wrap_8c n__wrap_8h n__x509_8c n__x509_8h n__zip_8c n__zip_8h n__zlib_8c n__zlib_8h nilorea_8h
6 Module PHYSICS
gullradriel edited this page 2026-10-29 20:54:40 +01:00
Table of Contents

PHYSICS: simple 3D movement simulation

Structures

Name
struct PHYSICS
structure of the physics of an object

Types

Name
typedef double[3] VECTOR3D
struct of a point

Functions

Name
double vector_normalize(VECTOR3D * vec)
vector normalize
int vector_intersect(VECTOR3D * p1, VECTOR3D * p2, VECTOR3D * p3, VECTOR3D * p4, VECTOR3D * px)
compute if two vector are colliding, storing the resulting point in px
double vector_dot_product(VECTOR3D * vec1, VECTOR3D * vec2)
dot product
double vector_angle_between(VECTOR3D * vec1, VECTOR3D * vec2)
vector angle with other vector
int update_physics_position_reverse_nb(PHYSICS * object, int it, double delta_t)
update component[ it ] of a VECTOR3D, reversed time
int update_physics_position_reverse(PHYSICS * object, double delta_t)
update the position of an object, using the delta time T to reverse update positions
int update_physics_position_nb(PHYSICS * object, int it, double delta_t)
update component[ it ] of a VECTOR3D
int update_physics_position(PHYSICS * object, double delta_t)
update the position of an object, using the delta time T to update positions
double distance(VECTOR3D * p1, VECTOR3D * p2)
distance between two points

Defines

Name
copy_point(_src, _dst)
VECTOR3D copy wrapper.
VECTOR3D_SET(VECTOR, X, Y, Z)
helper to set a VECTOR3D position
VECTOR3D_DO_INTERSECT
value when the two VECTOR3D are intersecting
VECTOR3D_DONT_INTERSECT
value when the two VECTOR3D are not connected
VECTOR3D_COLLINEAR
value when the two VECTOR3D are collinear
MOVE_STOPPED
PHYSICS object state for STOPPED.
MOVE_SIMU
PHYSICS object state for move simulated from latest update.
MOVE_INTER
PHYSICS object state for move interpolated between two position.

Types Documentation

typedef VECTOR3D

typedef double VECTOR3D[3];

struct of a point

Functions Documentation

function vector_normalize

double vector_normalize(
    VECTOR3D * vec
)

vector normalize

Parameters:

Return: normalized value of vec

Return the normalized value of vec.

vector normalize

function vector_intersect

int vector_intersect(
    VECTOR3D * p1,
    VECTOR3D * p2,
    VECTOR3D * p3,
    VECTOR3D * p4,
    VECTOR3D * px
)

compute if two vector are colliding, storing the resulting point in px

Parameters:

  • p1 First point of vector 1
  • p2 Second point of vector 1
  • p3 First point of vector 2
  • p4 Second point of vector 2
  • px Storage for the eventual point

Return: VECTOR3D_DONT_INTERSECT , VECTOR3D_COLLINEAR or VECTOR3D_DO_INTERSECT

Compute if two vectors are intersecting or not.

compute if two vector are colliding, storing the resulting point in px

function vector_dot_product

double vector_dot_product(
    VECTOR3D * vec1,
    VECTOR3D * vec2
)

dot product

Parameters:

Return: dot product value

Compute the dot product of two VECTOR3D.

dot product

function vector_angle_between

double vector_angle_between(
    VECTOR3D * vec1,
    VECTOR3D * vec2
)

vector angle with other vector

Parameters:

Return: angle between vectors in rad (todeg = returnval * 180/PI_2)

Compute angle between two VECTOR3D.

vector angle with other vector

function update_physics_position_reverse_nb

int update_physics_position_reverse_nb(
    PHYSICS * object,
    int it,
    double delta_t
)

update component[ it ] of a VECTOR3D, reversed time

Parameters:

  • object The object physics to update
  • it component of VECTOR3D to update. it values : 0 -> x, 1 -> y , 2 -> z
  • delta_t Elapsed time since last call for component update computing

Return: TRUE or FALSE

Update object position component, reversed.

update component[ it ] of a VECTOR3D, reversed time

function update_physics_position_reverse

int update_physics_position_reverse(
    PHYSICS * object,
    double delta_t
)

update the position of an object, using the delta time T to reverse update positions

Parameters:

  • object The object physics to update
  • delta_t Elapsed time since last call for component update computing

Return: TRUE or FALSE

Update object position, reversed.

update the position of an object, using the delta time T to reverse update positions

Wrapper of update_physics_position_reverse_nb to update each component.

function update_physics_position_nb

int update_physics_position_nb(
    PHYSICS * object,
    int it,
    double delta_t
)

update component[ it ] of a VECTOR3D

Parameters:

  • object The object physics to update
  • it component of VECTOR3D to update. it values : 0 -> x, 1 -> y , 2 -> z
  • delta_t Elapsed time since last call for component update computing

Return: TRUE or FALSE

Update object position component.

update component[ it ] of a VECTOR3D

function update_physics_position

int update_physics_position(
    PHYSICS * object,
    double delta_t
)

update the position of an object, using the delta time T to update positions

Parameters:

  • object The object physics to update
  • delta_t Elapsed time since last call for component update computing

Return: TRUE or FALSE

Update object position.

update the position of an object, using the delta time T to update positions

Wrapper of update_physics_position_nb to update each component.

function distance

double distance(
    VECTOR3D * p1,
    VECTOR3D * p2
)

distance between two points

Parameters:

  • p1 The first point
  • p2 The second point

Return: The computed distance

compute the distance between two VECTOR3D points

distance between two points

Macros Documentation

define copy_point

#define copy_point(
    __src_,
    __dst_
)
memcpy(__dst_, __src_, sizeof(VECTOR3D));

VECTOR3D copy wrapper.

define VECTOR3D_SET

#define VECTOR3D_SET(
    VECTOR,
    X,
    Y,
    Z
)
do {                              \
    VECTOR[0] = (X);              \
    VECTOR[1] = (Y);              \
    VECTOR[2] = (Z);              \
} while (0)

helper to set a VECTOR3D position

define VECTOR3D_DO_INTERSECT

#define VECTOR3D_DO_INTERSECT 0

value when the two VECTOR3D are intersecting

define VECTOR3D_DONT_INTERSECT

#define VECTOR3D_DONT_INTERSECT -2

value when the two VECTOR3D are not connected

define VECTOR3D_COLLINEAR

#define VECTOR3D_COLLINEAR -1

value when the two VECTOR3D are collinear

define MOVE_STOPPED

#define MOVE_STOPPED 0

PHYSICS object state for STOPPED.

define MOVE_SIMU

#define MOVE_SIMU 2

PHYSICS object state for move simulated from latest update.

define MOVE_INTER

#define MOVE_INTER 1

PHYSICS object state for move interpolated between two position.

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