/* SPDX-License-Identifier: GPL-2.0-or-later
 * Copyright 2001-2002 NaN Holding BV. All rights reserved. */

/** \file
 * \ingroup editors
 */

#pragma once

#ifdef __cplusplus
extern "C" {
#endif

/* ******************* Registration Function ********************** */

struct Object;
struct bContext;
struct wmKeyConfig;
struct wmOperatorType;

void ED_keymap_transform(struct wmKeyConfig *keyconf);
void transform_operatortypes(void);

/* ******************** Macros & Prototypes *********************** */

/* MODE AND NUMINPUT FLAGS */
typedef enum {
  TFM_INIT = -1,
  TFM_DUMMY,
  TFM_TRANSLATION,
  TFM_ROTATION,
  TFM_RESIZE,
  TFM_SKIN_RESIZE,
  TFM_TOSPHERE,
  TFM_SHEAR,
  TFM_BEND,
  TFM_SHRINKFATTEN,
  TFM_TILT,
  TFM_TRACKBALL,
  TFM_PUSHPULL,
  TFM_EDGE_CREASE,
  TFM_VERT_CREASE,
  TFM_MIRROR,
  TFM_BONESIZE,
  TFM_BONE_ENVELOPE,
  TFM_CURVE_SHRINKFATTEN,
  TFM_MASK_SHRINKFATTEN,
  TFM_GPENCIL_SHRINKFATTEN,
  TFM_BONE_ROLL,
  TFM_TIME_TRANSLATE,
  TFM_TIME_SLIDE,
  TFM_TIME_SCALE,
  TFM_TIME_EXTEND,
  TFM_TIME_DUPLICATE,
  TFM_BAKE_TIME,
  TFM_DEPRECATED, /* was BEVEL */
  TFM_BWEIGHT,
  TFM_ALIGN,
  TFM_EDGE_SLIDE,
  TFM_VERT_SLIDE,
  TFM_SEQ_SLIDE,
  TFM_BONE_ENVELOPE_DIST,
  TFM_NORMAL_ROTATION,
  TFM_GPENCIL_OPACITY,
} eTfmMode;

/* Standalone call to get the transformation center corresponding to the current situation
 * returns 1 if successful, 0 otherwise (usually means there's no selection)
 * (if false is returns, `cent3d` is unmodified). */
bool calculateTransformCenter(struct bContext *C,
                              int centerMode,
                              float cent3d[3],
                              float cent2d[2]);

struct Object;
struct Scene;
struct wmGizmoGroupType;

/* UNUSED */
// int BIF_snappingSupported(struct Object *obedit);

struct ReportList;
struct TransformOrientation;
struct bContext;

void BIF_clearTransformOrientation(struct bContext *C);
void BIF_removeTransformOrientation(struct bContext *C, struct TransformOrientation *target);
void BIF_removeTransformOrientationIndex(struct bContext *C, int index);
bool BIF_createTransformOrientation(struct bContext *C,
                                    struct ReportList *reports,
                                    const char *name,
                                    bool use_view,
                                    bool activate,
                                    bool overwrite);
void BIF_selectTransformOrientation(struct bContext *C, struct TransformOrientation *target);

void ED_getTransformOrientationMatrix(const struct Scene *scene,
                                      struct ViewLayer *view_layer,
                                      const struct View3D *v3d,
                                      struct Object *ob,
                                      struct Object *obedit,
                                      short around,
                                      float r_orientation_mat[3][3]);

int BIF_countTransformOrientation(const struct bContext *C);

/* to be able to add operator properties to other operators */

#define P_MIRROR (1 << 0)
#define P_MIRROR_DUMMY (P_MIRROR | (1 << 9))
#define P_PROPORTIONAL (1 << 1)
#define P_ORIENT_AXIS (1 << 2)
#define P_ORIENT_AXIS_ORTHO (1 << 16)
#define P_ORIENT_MATRIX (1 << 17)
#define P_SNAP (1 << 3)
#define P_GEO_SNAP (P_SNAP | (1 << 4))
#define P_ALIGN_SNAP (P_GEO_SNAP | (1 << 5))
#define P_CONSTRAINT (1 << 6)
#define P_OPTIONS (1 << 7)
#define P_CORRECT_UV (1 << 8)
#define P_NO_DEFAULTS (1 << 10)
#define P_NO_TEXSPACE (1 << 11)
#define P_CENTER (1 << 12)
#define P_GPENCIL_EDIT (1 << 13)
#define P_CURSOR_EDIT (1 << 14)
#define P_CLNOR_INVALIDATE (1 << 15)
#define P_VIEW2D_EDGE_PAN (1 << 16)
/* For properties performed when confirming the transformation. */
#define P_POST_TRANSFORM (1 << 19)

void Transform_Properties(struct wmOperatorType *ot, int flags);

/* *** transform_orientations.c *** */
void ED_transform_calc_orientation_from_type(const struct bContext *C, float r_mat[3][3]);
/**
 * \note The resulting matrix may not be orthogonal,
 * callers that depend on `r_mat` to be orthogonal should use #orthogonalize_m3.
 *
 * A non orthogonal matrix may be returned when:
 * - #V3D_ORIENT_GIMBAL the result won't be orthogonal unless the object has no rotation.
 * - #V3D_ORIENT_LOCAL may contain shear from non-uniform scale in parent/child relationships.
 * - #V3D_ORIENT_CUSTOM may have been created from #V3D_ORIENT_LOCAL.
 */
short ED_transform_calc_orientation_from_type_ex(const struct Scene *scene,
                                                 struct ViewLayer *view_layer,
                                                 const struct View3D *v3d,
                                                 const struct RegionView3D *rv3d,
                                                 struct Object *ob,
                                                 struct Object *obedit,
                                                 short orientation_index,
                                                 int pivot_point,
                                                 float r_mat[3][3]);

/* transform gizmos */

void VIEW3D_GGT_xform_gizmo(struct wmGizmoGroupType *gzgt);
/**
 * Only poll, flag & gzmap_params differ.
 */
void VIEW3D_GGT_xform_gizmo_context(struct wmGizmoGroupType *gzgt);
void VIEW3D_GGT_xform_cage(struct wmGizmoGroupType *gzgt);
void VIEW3D_GGT_xform_shear(struct wmGizmoGroupType *gzgt);

/* *** transform_gizmo_extrude_3d.c *** */
void VIEW3D_GGT_xform_extrude(struct wmGizmoGroupType *gzgt);

/* Generic 2D transform gizmo callback assignment. */
void ED_widgetgroup_gizmo2d_xform_callbacks_set(struct wmGizmoGroupType *gzgt);
void ED_widgetgroup_gizmo2d_xform_no_cage_callbacks_set(struct wmGizmoGroupType *gzgt);
void ED_widgetgroup_gizmo2d_resize_callbacks_set(struct wmGizmoGroupType *gzgt);
void ED_widgetgroup_gizmo2d_rotate_callbacks_set(struct wmGizmoGroupType *gzgt);

#define SNAP_INCREMENTAL_ANGLE DEG2RAD(5.0)

struct TransformBounds {
  float center[3];      /* Center for transform widget. */
  float min[3], max[3]; /* Bounding-box of selection for transform widget. */

  /* Normalized axis */
  float axis[3][3];
  float axis_min[3], axis_max[3];

  /**
   * When #TransformCalcParams.use_local_axis is used.
   * This is the local space matrix the caller may need to access.
   */
  bool use_matrix_space;
  float matrix_space[4][4];
};

struct TransformCalcParams {
  uint use_only_center : 1;
  uint use_local_axis : 1;
  /* Use 'Scene.orientation_type' when zero, otherwise subtract one and use. */
  ushort orientation_index;
};
/**
 * Centroid, bound-box, of selection.
 *
 * Returns total items selected.
 */
int ED_transform_calc_gizmo_stats(const struct bContext *C,
                                  const struct TransformCalcParams *params,
                                  struct TransformBounds *tbounds);

/**
 * Iterates over all the strips and finds the closest snapping candidate of either \a frame_1 or \a
 * frame_2. The closest snapping candidate will be the closest start or end frame of an existing
 * strip.
 * \returns True if there was anything to snap to.
 */
bool ED_transform_snap_sequencer_to_closest_strip_calc(struct Scene *scene,
                                                       struct ARegion *region,
                                                       int frame_1,
                                                       int frame_2,
                                                       int *r_snap_distance,
                                                       float *r_snap_frame);

void ED_draw_sequencer_snap_point(struct bContext *C, float snap_point);

#ifdef __cplusplus
}
#endif