- #ifndef _RAYCAST_H_ 
- #define _RAYCAST_H_ 
-   
- #include "dr_types.h" 
-   
- extern br_matrix34 gPick_model_to_view__raycast; // suffix added to avoid duplicate symbol 
- extern int gBelow_face_index; 
- extern br_scalar gCurrent_y; 
- extern int gAbove_face_index; 
- extern br_model* gAbove_model; 
- extern br_model* gBelow_model; 
- extern br_scalar gHighest_y_below; 
- extern br_actor* gY_picking_camera; 
- extern br_scalar gLowest_y_above; 
-   
- // Added, probably can be replaced with NULL 
- extern br_model* model_unk1; 
- extern br_material* material_unk1; 
-   
- int DRActorToRoot(br_actor* a, br_actor* world, br_matrix34* m); 
-   
- void InitRayCasting(void); 
-   
- // Suffix added to avoid duplicate symbol 
- int BadDiv__raycast(br_scalar a, br_scalar b); 
-   
- // Suffix added to avoid duplicate symbol 
- void DRVector2AccumulateScale__raycast(br_vector2* a, br_vector2* b, br_scalar s); 
-   
- // Suffix added to avoid duplicate symbol 
- int PickBoundsTestRay__raycast(br_bounds* b, br_vector3* rp, br_vector3* rd, br_scalar t_near, br_scalar t_far, br_scalar* new_t_near, br_scalar* new_t_far); 
-   
- int ActorPick2D(br_actor* ap, br_model* model, br_material* material, dr_pick2d_cbfn* callback, void* arg); 
-   
- int DRScenePick2DXY(br_actor* world, br_actor* camera, br_pixelmap* viewport, int pick_x, int pick_y, dr_pick2d_cbfn* callback, void* arg); 
-   
- int DRScenePick2D(br_actor* world, br_actor* camera, dr_pick2d_cbfn* callback, void* arg); 
-   
- int DRModelPick2D__raycast(br_model* model, br_material* material, br_vector3* ray_pos, br_vector3* ray_dir, br_scalar t_near, br_scalar t_far, dr_modelpick2d_cbfn* callback, void* arg); 
-   
- // Suffix added to avoid duplicate symbol 
- int FindHighestPolyCallBack__raycast(br_model* pModel, br_material* pMaterial, br_vector3* pRay_pos, br_vector3* pRay_dir, br_scalar pT, int pF, int pE, int pV, br_vector3* pPoint, br_vector2* pMap, void* pArg); 
-   
- // Suffix added to avoid duplicate symbol 
- int FindHighestCallBack__raycast(br_actor* pActor, br_model* pModel, br_material* pMaterial, br_vector3* pRay_pos, br_vector3* pRay_dir, br_scalar pT_near, br_scalar pT_far, void* pArg); 
-   
- void FindBestY(br_vector3* pPosition, br_actor* gWorld, br_scalar pStarting_height, br_scalar* pNearest_y_above, br_scalar* pNearest_y_below, br_model** pNearest_above_model, br_model** pNearest_below_model, int* pNearest_above_face_index, int* pNearest_below_face_index); 
-   
- int FindYVerticallyBelowPolyCallBack(br_model* pModel, br_material* pMaterial, br_vector3* pRay_pos, br_vector3* pRay_dir, br_scalar pT, int pF, int pE, int pV, br_vector3* pPoint, br_vector2* pMap, void* pArg); 
-   
- int FindYVerticallyBelowCallBack(br_actor* pActor, br_model* pModel, br_material* pMaterial, br_vector3* pRay_pos, br_vector3* pRay_dir, br_scalar pT_near, br_scalar pT_far, void* pArg); 
-   
- br_scalar FindYVerticallyBelow(br_vector3* pPosition); 
-   
- br_scalar FindYVerticallyBelow2(br_vector3* pCast_point); 
-   
- #endif 
-