transform.h

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/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#ifndef TRANSFORM_H
#define TRANSFORM_H

#include "ED_transform.h"
#include "ED_numinput.h"

#include "DNA_listBase.h"

#include "BLI_editVert.h"

/* ************************** Types ***************************** */

struct TransInfo;
struct TransData;
struct TransformOrientation;
struct TransSnap;
struct NumInput;
struct Object;
struct View3D;
struct ScrArea;
struct Scene;
struct bPose;
struct bConstraint;
struct BezTriple;
struct wmOperatorType;
struct wmOperator;
struct wmWindowManager;
struct wmKeyMap;
struct wmKeyConfig;
struct bContext;
struct wmEvent;
struct wmTimer;
struct ARegion;
struct ReportList;

typedef struct TransSnapPoint {
    struct TransSnapPoint *next,*prev;
    float co[3];
} TransSnapPoint;

typedef struct TransSnap {
    short   mode;
    short   target;
    short   modePoint;
    short   modeSelect;
    short   align;
    char    project;
    char    snap_self;
    short   peel;
    short   status;
    float   snapPoint[3]; /* snapping from this point */
    float   snapTarget[3]; /* to this point */
    float   snapNormal[3];
    float   snapTangent[3];
    ListBase points;
    TransSnapPoint  *selectedPoint;
    float   dist; // Distance from snapPoint to snapTarget
    double  last;
    void  (*applySnap)(struct TransInfo *, float *);
    void  (*calcSnap)(struct TransInfo *, float *);
    void  (*targetSnap)(struct TransInfo *);
    float  (*distance)(struct TransInfo *, float p1[3], float p2[3]); // Get the transform distance between two points (used by Closest snap)
} TransSnap;

typedef struct TransCon {
    short orientation;   
    char  text[50];      /* Description of the Constraint for header_print                            */
    float mtx[3][3];     /* Matrix of the Constraint space                                            */
    float imtx[3][3];    /* Inverse Matrix of the Constraint space                                    */
    float pmtx[3][3];    /* Projection Constraint Matrix (same as imtx with some axis == 0)           */
    float center[3];     /* transformation center to define where to draw the view widget
                            ALWAYS in global space. Unlike the transformation center                  */
    int   imval[2];      /* initial mouse value for visual calculation                                */
                         /* the one in TransInfo is not garanty to stay the same (Rotates change it)  */
    int   mode;          /* Mode flags of the Constraint                                              */
    void  (*drawExtra)(struct TransInfo *);
                         /* For constraints that needs to draw differently from the other
                            uses this instead of the generic draw function                            */
    void  (*applyVec)(struct TransInfo *, struct TransData *, float *, float *, float *);
                         /* Apply function pointer for linear vectorial transformation                */
                         /* The last three parameters are pointers to the in/out/printable vectors    */
    void  (*applySize)(struct TransInfo *, struct TransData *, float [3][3]);
                         /* Apply function pointer for size transformation */
    void  (*applyRot)(struct TransInfo *, struct TransData *, float [3], float *);
                         /* Apply function pointer for rotation transformation */
} TransCon;

typedef struct TransDataExtension {
    float drot[3];       /* Initial object drot */
    // float drotAngle;  /* Initial object drotAngle,    TODO: not yet implimented */
    // float drotAxis[3];    /* Initial object drotAxis, TODO: not yet implimented */
    float dquat[4];      /* Initial object dquat */
    float dscale[3];     /* Initial object dscale */
    float *rot;          /* Rotation of the data to transform (Faculative)                                 */
    float  irot[3];      /* Initial rotation                                                               */
    float *quat;         /* Rotation quaternion of the data to transform (Faculative)                      */
    float  iquat[4];     /* Initial rotation quaternion                                                    */
    float *rotAngle;     /* Rotation angle of the data to transform (Faculative)                         */
    float  irotAngle;    /* Initial rotation angle                                               */
    float *rotAxis;      /* Rotation axis of the data to transform (Faculative)                          */
    float  irotAxis[4];  /* Initial rotation axis                                                    */
    float *size;         /* Size of the data to transform (Faculative)                                     */
    float  isize[3];     /* Initial size                                                                   */
    float  obmat[4][4];  /* Object matrix */
    float  l_smtx[3][3]; /* use instead of td->smtx, It is the same but without the 'bone->bone_mat', see TD_PBONE_LOCAL_MTX_C */
    int    rotOrder;    /* rotation mode,  as defined in eRotationModes (DNA_action_types.h) */
} TransDataExtension;

typedef struct TransData2D {
    float loc[3];       /* Location of data used to transform (x,y,0) */
    float *loc2d;       /* Pointer to real 2d location of data */

    float *h1, *h2;     /* Pointer to handle locations, if handles aren't being moved independently */
    float ih1[2], ih2[2];
} TransData2D;

/* we need to store 2 handles for each transdata incase the other handle wasnt selected */
typedef struct TransDataCurveHandleFlags {
    char ih1, ih2;
    char *h1, *h2;
} TransDataCurveHandleFlags;

/* for sequencer transform */
typedef struct TransDataSeq {
    struct Sequence *seq;
    int flag;       /* a copy of seq->flag that may be modified for nested strips */
    int start_offset; /* use this so we can have transform data at the strips start, but apply correctly to the start frame  */
    short sel_flag; /* one of SELECT, SEQ_LEFTSEL and SEQ_RIGHTSEL */

} TransDataSeq;

/* for NLA transform (stored in td->extra pointer) */
typedef struct TransDataNla {
    ID *id;                     /* ID-block NLA-data is attached to */
    
    struct NlaTrack *oldTrack;  /* Original NLA-Track that the strip belongs to */
    struct NlaTrack *nlt;       /* Current NLA-Track that the strip belongs to */
    
    struct NlaStrip *strip;     /* NLA-strip this data represents */
    
    /* dummy values for transform to write in - must have 3 elements... */
    float h1[3];                /* start handle */
    float h2[3];                /* end handle */
    
    int trackIndex;             /* index of track that strip is currently in */
    int handle;                 /* handle-index: 0 for dummy entry, -1 for start, 1 for end, 2 for both ends */
} TransDataNla;

struct LinkNode;
struct EditEdge;
struct EditVert;
struct GHash;
typedef struct TransDataSlideUv {
    float origuv[2];
    float *uv_up, *uv_down;
    //float *fuv[4];
    struct LinkNode *fuv_list;
} TransDataSlideUv;

typedef struct TransDataSlideVert {
    struct EditEdge *up, *down;
    struct EditVert origvert;
} TransDataSlideVert;

typedef struct SlideData {
    TransDataSlideUv *slideuv, *suv_last;
    int totuv, uvlay_tot;
    struct GHash *vhash, **uvhash;
    struct EditVert *nearest;
    struct LinkNode *edgelist, *vertlist;
    int start[2], end[2];
} SlideData;

typedef struct TransData {
    float  dist;         /* Distance needed to affect element (for Proportionnal Editing)                  */
    float  rdist;        /* Distance to the nearest element (for Proportionnal Editing)                    */
    float  factor;       /* Factor of the transformation (for Proportionnal Editing)                       */
    float *loc;          /* Location of the data to transform                                              */
    float  iloc[3];      /* Initial location                                                               */
    float *val;          /* Value pointer for special transforms */
    float  ival;         /* Old value*/
    float  center[3];    /* Individual data center                                                         */
    float  mtx[3][3];    /* Transformation matrix from data space to global space                          */
    float  smtx[3][3];   /* Transformation matrix from global space to data space                          */
    float  axismtx[3][3];/* Axis orientation matrix of the data                                            */
    struct Object *ob;
    struct bConstraint *con;    /* for objects/bones, the first constraint in its constraint stack */
    TransDataExtension *ext;    /* for objects, poses. 1 single malloc per TransInfo! */
    TransDataCurveHandleFlags *hdata; /* for curves, stores handle flags for modification/cancel */
    void  *extra;        /* extra data (mirrored element pointer, in editmode mesh to EditVert) (editbone for roll fixing) (...) */
    int  flag;         /* Various flags */
    short  protectflag;  /* If set, copy of Object or PoseChannel protection */
} TransData;

typedef struct MouseInput {
    void    (*apply)(struct TransInfo *, struct MouseInput *, const int [2], float [3]);
    void    (*post)(struct TransInfo *, float [3]);

    int     imval[2];           /* initial mouse position                */
    char    precision;
    int     precision_mval[2];  /* mouse position when precision key was pressed */
    int     center[2];
    float   factor;
    void    *data; /* additional data, if needed by the particular function */
} MouseInput;

typedef struct TransInfo {
    int         mode;           /* current mode                         */
    int         flag;           /* generic flags for special behaviors  */
    int         modifiers;      /* special modifiers, by function, not key */
    short       state;          /* current state (running, canceled,...)*/
    int         options;        /* current context/options for transform                      */
    float       val;            /* init value for some transformations (and rotation angle)  */
    float       fac;            /* factor for distance based transform  */
    int       (*transform)(struct TransInfo *, const int *);
                                /* transform function pointer           */
    int       (*handleEvent)(struct TransInfo *, struct wmEvent *);
                                /* event handler function pointer  RETURN 1 if redraw is needed */
    int         total;          /* total number of transformed data     */
    TransData  *data;           /* transformed data (array)             */
    TransDataExtension *ext;    /* transformed data extension (array)   */
    TransData2D *data2d;        /* transformed data for 2d (array)      */
    TransCon    con;            /* transformed constraint               */
    TransSnap   tsnap;
    NumInput    num;            /* numerical input                      */
    MouseInput  mouse;          /* mouse input                          */
    char        redraw;         /* redraw flag                          */
    float       prop_size;      /* proportional circle radius           */
    char        proptext[20];   /* proportional falloff text            */
    float       center[3];      /* center of transformation             */
    int         center2d[2];    /* center in screen coordinates         */
    int         imval[2];       /* initial mouse position               */
    short       event_type;     /* event->type used to invoke transform */
    short       idx_max;        /* maximum index on the input vector    */
    float       snap[3];        /* Snapping Gears                       */
    char        frame_side;     /* Mouse side of the cfra, 'L', 'R' or 'B' */

    float       viewmat[4][4];  /* copy from G.vd, prevents feedback,   */
    float       viewinv[4][4];  /* and to make sure we don't have to    */
    float       persmat[4][4];  /* access G.vd from other space types   */
    float       persinv[4][4];
    short       persp;
    short       around;
    char        spacetype;      /* spacetype where transforming is      */
    char        helpline;       /* helpline modes (not to be confused with hotline) */

    float       vec[3];         /* translation, to show for widget      */
    float       mat[3][3];      /* rot/rescale, to show for widget      */

    char        *undostr;       /* if set, uses this string for undo        */
    float       spacemtx[3][3]; /* orientation matrix of the current space  */
    char        spacename[64];  /* name of the current space, MAX_NAME      */

    struct Object *poseobj;     /* if t->flag & T_POSE, this denotes pose object */

    void       *customData;     /* Per Transform custom data */
    void      (*customFree)(struct TransInfo *); /* if a special free function is needed */

    /*************** NEW STUFF *********************/
    short       launch_event;   /* event type used to launch transform */

    short       current_orientation;
    short       twtype;         /* backup from view3d, to restore on end */

    short       prop_mode;
    
    short       mirror;

    float       values[4];
    float       auto_values[4];
    float       axis[3];
    float       axis_orig[3];   /* TransCon can change 'axis', store the original value here */

    void        *view;
    struct bContext *context; /* Only valid (non null) during an operator called function. */
    struct ScrArea  *sa;
    struct ARegion  *ar;
    struct Scene    *scene;
    struct ToolSettings *settings;
    struct wmTimer *animtimer;
    int         mval[2];        /* current mouse position               */
    struct Object   *obedit;
    void        *draw_handle_apply;
    void        *draw_handle_view;
    void        *draw_handle_pixel;
    void        *draw_handle_cursor;
} TransInfo;


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

/* transinfo->state */
#define TRANS_STARTING  0
#define TRANS_RUNNING   1
#define TRANS_CONFIRM   2
#define TRANS_CANCEL    3

/* transinfo->redraw */
#define TREDRAW_NOTHING     0
#define TREDRAW_HARD        1
#define TREDRAW_SOFT        2


/* transinfo->flag */
#define T_OBJECT        (1 << 0)
#define T_EDIT          (1 << 1)
#define T_POSE          (1 << 2)
#define T_TEXTURE       (1 << 3)
#define T_CAMERA        (1 << 4)
         // trans on points, having no rotation/scale
#define T_POINTS        (1 << 6)
        // for manipulator exceptions, like scaling using center point, drawing help lines
#define T_USES_MANIPULATOR  (1 << 7)

    /* restrictions flags */
#define T_ALL_RESTRICTIONS  ((1 << 8)|(1 << 9)|(1 << 10))
#define T_NO_CONSTRAINT     (1 << 8)
#define T_NULL_ONE          (1 << 9)
#define T_NO_ZERO           (1 << 10)

#define T_PROP_EDIT         (1 << 11)
#define T_PROP_CONNECTED    (1 << 12)

#define T_V3D_ALIGN         (1 << 14)
    /* for 2d views like uv or ipo */
#define T_2D_EDIT           (1 << 15)
#define T_CLIP_UV           (1 << 16)

#define T_FREE_CUSTOMDATA   (1 << 17)
    /* auto-ik is on */
#define T_AUTOIK            (1 << 18)

#define T_MIRROR            (1 << 19)

#define T_AUTOVALUES        (1 << 20)

    /* to specificy if we save back settings at the end */
#define T_MODAL             (1 << 21)

    /* no retopo */
#define T_NO_PROJECT        (1 << 22)

#define T_RELEASE_CONFIRM   (1 << 23)

    /* alternative transformation. used to add offset to tracking markers */
#define T_ALT_TRANSFORM     (1 << 24)

/* TransInfo->modifiers */
#define MOD_CONSTRAINT_SELECT   0x01
#define MOD_PRECISION           0x02
#define MOD_SNAP                0x04
#define MOD_SNAP_INVERT         0x08
#define MOD_CONSTRAINT_PLANE    0x10


/* ******************************************************************************** */

/* transinfo->helpline */
#define HLP_NONE        0
#define HLP_SPRING      1
#define HLP_ANGLE       2
#define HLP_HARROW      3
#define HLP_VARROW      4
#define HLP_TRACKBALL   5

/* transinfo->con->mode */
#define CON_APPLY       1
#define CON_AXIS0       2
#define CON_AXIS1       4
#define CON_AXIS2       8
#define CON_SELECT      16
#define CON_NOFLIP      32  /* does not reorient vector to face viewport when on */
#define CON_USER        64

/* transdata->flag */
#define TD_SELECTED         1
#define TD_ACTIVE           (1 << 1)
#define TD_NOACTION         (1 << 2)
#define TD_USEQUAT          (1 << 3)
#define TD_NOTCONNECTED     (1 << 4)
#define TD_SINGLESIZE       (1 << 5)    /* used for scaling of MetaElem->rad */
/*#define TD_TIMEONLY           (1 << 8) */ /*UNUSED*/
#define TD_NOCENTER         (1 << 9)
#define TD_NO_EXT           (1 << 10)   /* ext abused for particle key timing */
#define TD_SKIP             (1 << 11)   /* don't transform this data */
#define TD_BEZTRIPLE        (1 << 12)   /* if this is a bez triple, we need to restore the handles, if this is set transdata->misc.hdata needs freeing */
#define TD_NO_LOC           (1 << 13)   /* when this is set, don't apply translation changes to this element */
#define TD_NOTIMESNAP       (1 << 14)   /* for Graph Editor autosnap, indicates that point should not undergo autosnapping */
#define TD_INTVALUES        (1 << 15)   /* for Graph Editor - curves that can only have int-values need their keyframes tagged with this */
#define TD_MIRROR_EDGE      (1 << 16)   /* For editmode mirror, clamp to x = 0 */
#define TD_MOVEHANDLE1      (1 << 17)   /* For fcurve handles, move them along with their keyframes */
#define TD_MOVEHANDLE2      (1 << 18)
#define TD_PBONE_LOCAL_MTX_P (1 << 19)  /* exceptional case with pose bone rotating when a parent bone has 'Local Location' option enabled and rotating also transforms it. */
#define TD_PBONE_LOCAL_MTX_C (1 << 20)  /* same as above but for a child bone */

/* transsnap->status */
#define SNAP_FORCED     1
#define TARGET_INIT     2
#define POINT_INIT      4
#define MULTI_POINTS    8

void TRANSFORM_OT_transform(struct wmOperatorType *ot);

int initTransform(struct bContext *C, struct TransInfo *t, struct wmOperator *op, struct wmEvent *event, int mode);
void saveTransform(struct bContext *C, struct TransInfo *t, struct wmOperator *op);
int  transformEvent(TransInfo *t, struct wmEvent *event);
void transformApply(struct bContext *C, TransInfo *t);
int  transformEnd(struct bContext *C, TransInfo *t);

void setTransformViewMatrices(TransInfo *t);
void convertViewVec(TransInfo *t, float *vec, int dx, int dy);
void projectIntView(TransInfo *t, float *vec, int *adr);
void projectFloatView(TransInfo *t, float *vec, float *adr);

void applyAspectRatio(TransInfo *t, float *vec);
void removeAspectRatio(TransInfo *t, float *vec);

void initWarp(TransInfo *t);
int handleEventWarp(TransInfo *t, struct wmEvent *event);
int Warp(TransInfo *t, const int mval[2]);

void initShear(TransInfo *t);
int handleEventShear(TransInfo *t, struct wmEvent *event);
int Shear(TransInfo *t, const int mval[2]);

void initResize(TransInfo *t);
int Resize(TransInfo *t, const int mval[2]);

void initTranslation(TransInfo *t);
int Translation(TransInfo *t, const int mval[2]);

void initToSphere(TransInfo *t);
int ToSphere(TransInfo *t, const int mval[2]);

void initRotation(TransInfo *t);
int Rotation(TransInfo *t, const int mval[2]);

void initShrinkFatten(TransInfo *t);
int ShrinkFatten(TransInfo *t, const int mval[2]);

void initTilt(TransInfo *t);
int Tilt(TransInfo *t, const int mval[2]);

void initCurveShrinkFatten(TransInfo *t);
int CurveShrinkFatten(TransInfo *t, const int mval[2]);

void initTrackball(TransInfo *t);
int Trackball(TransInfo *t, const int mval[2]);

void initPushPull(TransInfo *t);
int PushPull(TransInfo *t, const int mval[2]);

void initBevel(TransInfo *t);
int handleEventBevel(TransInfo *t, struct wmEvent *event);
int Bevel(TransInfo *t, const int mval[2]);

void initBevelWeight(TransInfo *t);
int BevelWeight(TransInfo *t, const int mval[2]);

void initCrease(TransInfo *t);
int Crease(TransInfo *t, const int mval[2]);

void initBoneSize(TransInfo *t);
int BoneSize(TransInfo *t, const int mval[2]);

void initBoneEnvelope(TransInfo *t);
int BoneEnvelope(TransInfo *t, const int mval[2]);

void initBoneRoll(TransInfo *t);
int BoneRoll(TransInfo *t, const int mval[2]);

void initEdgeSlide(TransInfo *t);
int EdgeSlide(TransInfo *t, const int mval[2]);

void initTimeTranslate(TransInfo *t);
int TimeTranslate(TransInfo *t, const int mval[2]);

void initTimeSlide(TransInfo *t);
int TimeSlide(TransInfo *t, const int mval[2]);

void initTimeScale(TransInfo *t);
int TimeScale(TransInfo *t, const int mval[2]);

void initBakeTime(TransInfo *t);
int BakeTime(TransInfo *t, const int mval[2]);

void initMirror(TransInfo *t);
int Mirror(TransInfo *t, const int mval[2]);

void initAlign(TransInfo *t);
int Align(TransInfo *t, const int mval[2]);

void initSeqSlide(TransInfo *t);
int SeqSlide(TransInfo *t, const int mval[2]);

void drawPropCircle(const struct bContext *C, TransInfo *t);

struct wmKeyMap *transform_modal_keymap(struct wmKeyConfig *keyconf);


/*********************** transform_conversions.c ********** */
struct ListBase;

void flushTransGPactionData(TransInfo *t);
void flushTransGraphData(TransInfo *t);
void remake_graph_transdata(TransInfo *t, struct ListBase *anim_data);
void flushTransUVs(TransInfo *t);
void flushTransParticles(TransInfo *t);
int clipUVTransform(TransInfo *t, float *vec, int resize);
void flushTransNodes(TransInfo *t);
void flushTransSeq(TransInfo *t);
void flushTransTracking(TransInfo *t);

/*********************** exported from transform_manipulator.c ********** */
int gimbal_axis(struct Object *ob, float gmat[][3]); /* return 0 when no gimbal for selection */
int calc_manipulator_stats(const struct bContext *C);

/*********************** TransData Creation and General Handling *********** */
void createTransData(struct bContext *C, TransInfo *t);
void sort_trans_data_dist(TransInfo *t);
void add_tdi_poin(float *poin, float *old, float delta);
void special_aftertrans_update(struct bContext *C, TransInfo *t);

void transform_autoik_update(TransInfo *t, short mode);

int count_set_pose_transflags(int *out_mode, short around, struct Object *ob);

/* auto-keying stuff used by special_aftertrans_update */
void autokeyframe_ob_cb_func(struct bContext *C, struct Scene *scene, struct View3D *v3d, struct Object *ob, int tmode);
void autokeyframe_pose_cb_func(struct bContext *C, struct Scene *scene, struct View3D *v3d, struct Object *ob, int tmode, short targetless_ik);

/*********************** Constraints *****************************/

void drawConstraint(TransInfo *t);

void getConstraintMatrix(TransInfo *t);
void setConstraint(TransInfo *t, float space[3][3], int mode, const char text[]);
void setLocalConstraint(TransInfo *t, int mode, const char text[]);
void setUserConstraint(TransInfo *t, short orientation, int mode, const char text[]);

void constraintNumInput(TransInfo *t, float vec[3]);

int isLockConstraint(TransInfo *t);
int getConstraintSpaceDimension(TransInfo *t);
char constraintModeToChar(TransInfo *t);

void startConstraint(TransInfo *t);
void stopConstraint(TransInfo *t);

void initSelectConstraint(TransInfo *t, float mtx[3][3]);
void selectConstraint(TransInfo *t);
void postSelectConstraint(TransInfo *t);

void setNearestAxis(TransInfo *t);

/*********************** Snapping ********************************/

typedef enum {
    NO_GEARS    = 0,
    BIG_GEARS   = 1,
    SMALL_GEARS = 2
} GearsType;

void snapGrid(TransInfo *t, float *val);
void snapGridAction(TransInfo *t, float *val, GearsType action);

int activeSnap(TransInfo *t);
int validSnap(TransInfo *t);

void initSnapping(struct TransInfo *t, struct wmOperator *op);
void applyProject(TransInfo *t);
void applySnapping(TransInfo *t, float *vec);
void resetSnapping(TransInfo *t);
int  handleSnapping(TransInfo *t, struct wmEvent *event);
void drawSnapping(const struct bContext *C, TransInfo *t);
int usingSnappingNormal(TransInfo *t);
int validSnappingNormal(TransInfo *t);

void getSnapPoint(TransInfo *t, float vec[3]);
void addSnapPoint(TransInfo *t);
int updateSelectedSnapPoint(TransInfo *t);
void removeSnapPoint(TransInfo *t);

/********************** Mouse Input ******************************/

typedef enum {
    INPUT_NONE,
    INPUT_VECTOR,
    INPUT_SPRING,
    INPUT_SPRING_FLIP,
    INPUT_ANGLE,
    INPUT_TRACKBALL,
    INPUT_HORIZONTAL_RATIO,
    INPUT_HORIZONTAL_ABSOLUTE,
    INPUT_VERTICAL_RATIO,
    INPUT_VERTICAL_ABSOLUTE,
    INPUT_CUSTOM_RATIO
} MouseInputMode;

void initMouseInput(TransInfo *t, MouseInput *mi, int center[2], int mval[2]);
void initMouseInputMode(TransInfo *t, MouseInput *mi, MouseInputMode mode);
int handleMouseInput(struct TransInfo *t, struct MouseInput *mi, struct wmEvent *event);
void applyMouseInput(struct TransInfo *t, struct MouseInput *mi, const int mval[2], float output[3]);

void setCustomPoints(TransInfo *t, MouseInput *mi, int start[2], int end[2]);
void setInputPostFct(MouseInput *mi, void   (*post)(struct TransInfo *, float [3]));

/*********************** Generics ********************************/

int initTransInfo(struct bContext *C, TransInfo *t, struct wmOperator *op, struct wmEvent *event);
void postTrans (struct bContext *C, TransInfo *t);
void resetTransRestrictions(TransInfo *t);

void drawLine(TransInfo *t, float *center, float *dir, char axis, short options);

TransDataCurveHandleFlags *initTransDataCurveHandes(TransData *td, struct BezTriple *bezt);

/* DRAWLINE options flags */
#define DRAWLIGHT   1

void applyTransObjects(TransInfo *t);
void restoreTransObjects(TransInfo *t);
void restoreTransNodes(TransInfo *t);
void recalcData(TransInfo *t);

void calculateCenter(TransInfo *t);
void calculateCenter2D(TransInfo *t);
void calculateCenterBound(TransInfo *t);
void calculateCenterMedian(TransInfo *t);
void calculateCenterCursor(TransInfo *t);

void calculateCenterCursor2D(TransInfo *t);
void calculatePropRatio(TransInfo *t);

void getViewVector(TransInfo *t, float coord[3], float vec[3]);

/*********************** Transform Orientations ******************************/

void initTransformOrientation(struct bContext *C, TransInfo *t);

struct TransformOrientation *createObjectSpace(struct bContext *C, struct ReportList *reports, char *name, int overwrite);
struct TransformOrientation *createMeshSpace(struct bContext *C, struct ReportList *reports, char *name, int overwrite);
struct TransformOrientation *createBoneSpace(struct bContext *C, struct ReportList *reports, char *name, int overwrite);

/* Those two fill in mat and return non-zero on success */
int createSpaceNormal(float mat[3][3], float normal[3]);
int createSpaceNormalTangent(float mat[3][3], float normal[3], float tangent[3]);

struct TransformOrientation *addMatrixSpace(struct bContext *C, float mat[3][3], char name[], int overwrite);
int addObjectSpace(struct bContext *C, struct Object *ob);
void applyTransformOrientation(const struct bContext *C, float mat[3][3], char *name);

#define ORIENTATION_NONE    0
#define ORIENTATION_NORMAL  1
#define ORIENTATION_VERT    2
#define ORIENTATION_EDGE    3
#define ORIENTATION_FACE    4

int getTransformOrientation(const struct bContext *C, float normal[3], float plane[3], int activeOnly);

void freeSlideVerts(TransInfo *t);

#endif