paint_intern.h

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/*
 * 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) 2008 Blender Foundation.
 * All rights reserved.
 */
 
#pragma once
 
struct ARegion;
struct Brush;
struct ColorManagedDisplay;
struct ColorSpace;
struct ImagePool;
struct MTex;
struct Object;
struct Paint;
struct PaintStroke;
struct PointerRNA;
struct RegionView3D;
struct Scene;
struct VPaint;
struct ViewContext;
struct bContext;
struct rcti;
struct wmEvent;
struct wmKeyConfig;
struct wmOperator;
struct wmOperatorType;
enum ePaintMode;
enum ePaintSymmetryFlags;
 
typedef struct CoNo {
  float co[3];
  float no[3];
} CoNo;
 
/* paint_stroke.c */
typedef bool (*StrokeGetLocation)(struct bContext *C, float location[3], const float mouse[2]);
typedef bool (*StrokeTestStart)(struct bContext *C, struct wmOperator *op, const float mouse[2]);
typedef void (*StrokeUpdateStep)(struct bContext *C,
                                 struct PaintStroke *stroke,
                                 struct PointerRNA *itemptr);
typedef void (*StrokeRedraw)(const struct bContext *C, struct PaintStroke *stroke, bool final);
typedef void (*StrokeDone)(const struct bContext *C, struct PaintStroke *stroke);
 
struct PaintStroke *paint_stroke_new(struct bContext *C,
                                     struct wmOperator *op,
                                     StrokeGetLocation get_location,
                                     StrokeTestStart test_start,
                                     StrokeUpdateStep update_step,
                                     StrokeRedraw redraw,
                                     StrokeDone done,
                                     int event_type);
void paint_stroke_free(struct bContext *C, struct wmOperator *op);
 
bool paint_space_stroke_enabled(struct Brush *br, enum ePaintMode mode);
bool paint_supports_dynamic_size(struct Brush *br, enum ePaintMode mode);
bool paint_supports_dynamic_tex_coords(struct Brush *br, enum ePaintMode mode);
bool paint_supports_smooth_stroke(struct Brush *br, enum ePaintMode mode);
bool paint_supports_texture(enum ePaintMode mode);
bool paint_supports_jitter(enum ePaintMode mode);
 
struct wmKeyMap *paint_stroke_modal_keymap(struct wmKeyConfig *keyconf);
int paint_stroke_modal(struct bContext *C, struct wmOperator *op, const struct wmEvent *event);
int paint_stroke_exec(struct bContext *C, struct wmOperator *op);
void paint_stroke_cancel(struct bContext *C, struct wmOperator *op);
bool paint_stroke_flipped(struct PaintStroke *stroke);
bool paint_stroke_inverted(struct PaintStroke *stroke);
struct ViewContext *paint_stroke_view_context(struct PaintStroke *stroke);
void *paint_stroke_mode_data(struct PaintStroke *stroke);
float paint_stroke_distance_get(struct PaintStroke *stroke);
void paint_stroke_set_mode_data(struct PaintStroke *stroke, void *mode_data);
bool paint_poll(struct bContext *C);
void paint_cursor_start(struct Paint *p, bool (*poll)(struct bContext *C));
void paint_cursor_delete_textures(void);
 
/* paint_vertex.c */
bool weight_paint_poll(struct bContext *C);
bool weight_paint_poll_ignore_tool(bContext *C);
bool weight_paint_mode_poll(struct bContext *C);
bool vertex_paint_poll(struct bContext *C);
bool vertex_paint_poll_ignore_tool(struct bContext *C);
bool vertex_paint_mode_poll(struct bContext *C);
 
typedef void (*VPaintTransform_Callback)(const float col[3],
                                         const void *user_data,
                                         float r_col[3]);
 
void PAINT_OT_weight_paint_toggle(struct wmOperatorType *ot);
void PAINT_OT_weight_paint(struct wmOperatorType *ot);
void PAINT_OT_weight_set(struct wmOperatorType *ot);
 
enum {
  WPAINT_GRADIENT_TYPE_LINEAR,
  WPAINT_GRADIENT_TYPE_RADIAL,
};
void PAINT_OT_weight_gradient(struct wmOperatorType *ot);
 
void PAINT_OT_vertex_paint_toggle(struct wmOperatorType *ot);
void PAINT_OT_vertex_paint(struct wmOperatorType *ot);
 
unsigned int vpaint_get_current_col(struct Scene *scene, struct VPaint *vp, bool secondary);
 
/* paint_vertex_color_utils.c */
unsigned int ED_vpaint_blend_tool(const int tool,
                                  const uint col,
                                  const uint paintcol,
                                  const int alpha_i);
bool ED_vpaint_color_transform(struct Object *ob,
                               VPaintTransform_Callback vpaint_tx_fn,
                               const void *user_data);
 
/* paint_vertex_weight_utils.c */
float ED_wpaint_blend_tool(const int tool,
                           const float weight,
                           const float paintval,
                           const float alpha);
/* Utility for tools to ensure vertex groups exist before they begin. */
enum eWPaintFlag {
  WPAINT_ENSURE_MIRROR = (1 << 0),
};
struct WPaintVGroupIndex {
  int active;
  int mirror;
};
bool ED_wpaint_ensure_data(struct bContext *C,
                           struct ReportList *reports,
                           enum eWPaintFlag flag,
                           struct WPaintVGroupIndex *vgroup_index);
int ED_wpaint_mirror_vgroup_ensure(struct Object *ob, const int vgroup_active);
 
/* paint_vertex_color_ops.c */
void PAINT_OT_vertex_color_set(struct wmOperatorType *ot);
void PAINT_OT_vertex_color_from_weight(struct wmOperatorType *ot);
void PAINT_OT_vertex_color_smooth(struct wmOperatorType *ot);
void PAINT_OT_vertex_color_brightness_contrast(struct wmOperatorType *ot);
void PAINT_OT_vertex_color_hsv(struct wmOperatorType *ot);
void PAINT_OT_vertex_color_invert(struct wmOperatorType *ot);
void PAINT_OT_vertex_color_levels(struct wmOperatorType *ot);
 
/* paint_vertex_weight_ops.c */
void PAINT_OT_weight_from_bones(struct wmOperatorType *ot);
void PAINT_OT_weight_sample(struct wmOperatorType *ot);
void PAINT_OT_weight_sample_group(struct wmOperatorType *ot);
 
/* paint_vertex_proj.c */
struct VertProjHandle;
struct VertProjHandle *ED_vpaint_proj_handle_create(struct Depsgraph *depsgraph,
                                                    struct Scene *scene,
                                                    struct Object *ob,
                                                    struct CoNo **r_vcosnos);
void ED_vpaint_proj_handle_update(struct Depsgraph *depsgraph,
                                  struct VertProjHandle *vp_handle,
                                  /* runtime vars */
                                  struct ARegion *region,
                                  const float mval_fl[2]);
void ED_vpaint_proj_handle_free(struct VertProjHandle *vp_handle);
 
/* paint_image.c */
typedef struct ImagePaintPartialRedraw {
  int x1, y1, x2, y2; /* XXX, could use 'rcti' */
  int enabled;
} ImagePaintPartialRedraw;
 
bool image_texture_paint_poll(struct bContext *C);
void imapaint_image_update(struct SpaceImage *sima,
                           struct Image *image,
                           struct ImBuf *ibuf,
                           struct ImageUser *iuser,
                           short texpaint);
struct ImagePaintPartialRedraw *get_imapaintpartial(void);
void set_imapaintpartial(struct ImagePaintPartialRedraw *ippr);
void imapaint_region_tiles(
    struct ImBuf *ibuf, int x, int y, int w, int h, int *tx, int *ty, int *tw, int *th);
bool get_imapaint_zoom(struct bContext *C, float *zoomx, float *zoomy);
void *paint_2d_new_stroke(struct bContext *, struct wmOperator *, int mode);
void paint_2d_redraw(const struct bContext *C, void *ps, bool final);
void paint_2d_stroke_done(void *ps);
void paint_2d_stroke(void *ps,
                     const float prev_mval[2],
                     const float mval[2],
                     const bool eraser,
                     float pressure,
                     float distance,
                     float size);
void paint_2d_bucket_fill(const struct bContext *C,
                          const float color[3],
                          struct Brush *br,
                          const float mouse_init[2],
                          const float mouse_final[2],
                          void *ps);
void paint_2d_gradient_fill(const struct bContext *C,
                            struct Brush *br,
                            const float mouse_init[2],
                            const float mouse_final[2],
                            void *ps);
void *paint_proj_new_stroke(struct bContext *C, struct Object *ob, const float mouse[2], int mode);
void paint_proj_stroke(const struct bContext *C,
                       void *ps_handle_p,
                       const float prev_pos[2],
                       const float pos[2],
                       const bool eraser,
                       float pressure,
                       float distance,
                       float size);
void paint_proj_redraw(const struct bContext *C, void *ps_handle_p, bool final);
void paint_proj_stroke_done(void *ps_handle_p);
 
void paint_brush_color_get(struct Scene *scene,
                           struct Brush *br,
                           bool color_correction,
                           bool invert,
                           float distance,
                           float pressure,
                           float color[3],
                           struct ColorManagedDisplay *display);
bool paint_use_opacity_masking(struct Brush *brush);
void paint_brush_init_tex(struct Brush *brush);
void paint_brush_exit_tex(struct Brush *brush);
 
void PAINT_OT_grab_clone(struct wmOperatorType *ot);
void PAINT_OT_sample_color(struct wmOperatorType *ot);
void PAINT_OT_brush_colors_flip(struct wmOperatorType *ot);
void PAINT_OT_texture_paint_toggle(struct wmOperatorType *ot);
void PAINT_OT_project_image(struct wmOperatorType *ot);
void PAINT_OT_image_from_view(struct wmOperatorType *ot);
void PAINT_OT_add_texture_paint_slot(struct wmOperatorType *ot);
void PAINT_OT_image_paint(struct wmOperatorType *ot);
void PAINT_OT_add_simple_uvs(struct wmOperatorType *ot);
 
/* sculpt_uv.c */
void SCULPT_OT_uv_sculpt_stroke(struct wmOperatorType *ot);
 
/* paint_utils.c */
 
/* Convert the object-space axis-aligned bounding box (expressed as
 * its minimum and maximum corners) into a screen-space rectangle,
 * returns zero if the result is empty */
bool paint_convert_bb_to_rect(struct rcti *rect,
                              const float bb_min[3],
                              const float bb_max[3],
                              const struct ARegion *region,
                              struct RegionView3D *rv3d,
                              struct Object *ob);
 
/* Get four planes in object-space that describe the projection of
 * screen_rect from screen into object-space (essentially converting a
 * 2D screens-space bounding box into four 3D planes) */
void paint_calc_redraw_planes(float planes[4][4],
                              const struct ARegion *region,
                              struct Object *ob,
                              const struct rcti *screen_rect);
 
float paint_calc_object_space_radius(struct ViewContext *vc,
                                     const float center[3],
                                     float pixel_radius);
float paint_get_tex_pixel(
    const struct MTex *mtex, float u, float v, struct ImagePool *pool, int thread);
void paint_get_tex_pixel_col(const struct MTex *mtex,
                             float u,
                             float v,
                             float rgba[4],
                             struct ImagePool *pool,
                             int thread,
                             bool convert,
                             struct ColorSpace *colorspace);
 
void paint_sample_color(
    struct bContext *C, struct ARegion *region, int x, int y, bool texpaint_proj, bool palette);
 
void paint_stroke_operator_properties(struct wmOperatorType *ot);
 
void BRUSH_OT_curve_preset(struct wmOperatorType *ot);
 
void PAINT_OT_face_select_linked(struct wmOperatorType *ot);
void PAINT_OT_face_select_linked_pick(struct wmOperatorType *ot);
void PAINT_OT_face_select_all(struct wmOperatorType *ot);
void PAINT_OT_face_select_hide(struct wmOperatorType *ot);
void PAINT_OT_face_select_reveal(struct wmOperatorType *ot);
 
void PAINT_OT_vert_select_all(struct wmOperatorType *ot);
void PAINT_OT_vert_select_ungrouped(struct wmOperatorType *ot);
 
bool vert_paint_poll(struct bContext *C);
bool mask_paint_poll(struct bContext *C);
bool paint_curve_poll(struct bContext *C);
 
bool facemask_paint_poll(struct bContext *C);
void flip_v3_v3(float out[3], const float in[3], const enum ePaintSymmetryFlags symm);
void flip_qt_qt(float out[3], const float in[3], const enum ePaintSymmetryFlags symm);
 
/* stroke operator */
typedef enum BrushStrokeMode {
  BRUSH_STROKE_NORMAL,
  BRUSH_STROKE_INVERT,
  BRUSH_STROKE_SMOOTH,
} BrushStrokeMode;
 
/* paint_hide.c */
 
typedef enum {
  PARTIALVIS_HIDE,
  PARTIALVIS_SHOW,
} PartialVisAction;
 
typedef enum {
  PARTIALVIS_INSIDE,
  PARTIALVIS_OUTSIDE,
  PARTIALVIS_ALL,
  PARTIALVIS_MASKED,
} PartialVisArea;
 
void PAINT_OT_hide_show(struct wmOperatorType *ot);
 
/* paint_mask.c */
 
typedef enum {
  PAINT_MASK_FLOOD_VALUE,
  PAINT_MASK_FLOOD_VALUE_INVERSE,
  PAINT_MASK_INVERT,
} PaintMaskFloodMode;
 
void PAINT_OT_mask_flood_fill(struct wmOperatorType *ot);
void PAINT_OT_mask_lasso_gesture(struct wmOperatorType *ot);
void PAINT_OT_mask_box_gesture(struct wmOperatorType *ot);
void PAINT_OT_mask_line_gesture(struct wmOperatorType *ot);
 
/* paint_curve.c */
void PAINTCURVE_OT_new(struct wmOperatorType *ot);
void PAINTCURVE_OT_add_point(struct wmOperatorType *ot);
void PAINTCURVE_OT_delete_point(struct wmOperatorType *ot);
void PAINTCURVE_OT_select(struct wmOperatorType *ot);
void PAINTCURVE_OT_slide(struct wmOperatorType *ot);
void PAINTCURVE_OT_draw(struct wmOperatorType *ot);
void PAINTCURVE_OT_cursor(struct wmOperatorType *ot);
 
/* image painting blur kernel */
typedef struct {
  float *wdata;     /* actual kernel */
  int side;         /* kernel side */
  int side_squared; /* data side */
  int pixel_len;    /* pixels around center that kernel is wide */
} BlurKernel;
 
enum eBlurKernelType;
/* can be extended to other blur kernels later */
BlurKernel *paint_new_blur_kernel(struct Brush *br, bool proj);
void paint_delete_blur_kernel(BlurKernel *);
 
/* paint curve defines */
#define PAINT_CURVE_NUM_SEGMENTS 40