diff options
Diffstat (limited to 'source/blender/editors/gpencil/gpencil_paint.c')
| -rw-r--r-- | source/blender/editors/gpencil/gpencil_paint.c | 321 |
1 files changed, 240 insertions, 81 deletions
diff --git a/source/blender/editors/gpencil/gpencil_paint.c b/source/blender/editors/gpencil/gpencil_paint.c index 01b0fe80dfc..06079c34d12 100644 --- a/source/blender/editors/gpencil/gpencil_paint.c +++ b/source/blender/editors/gpencil/gpencil_paint.c @@ -30,6 +30,7 @@ #include "MEM_guardedalloc.h" #include "BLI_blenlib.h" +#include "BLI_hash.h" #include "BLI_math.h" #include "BLI_math_geom.h" #include "BLI_rand.h" @@ -155,7 +156,7 @@ typedef struct tGPsdata { /** window where painting originated. */ wmWindow *win; /** area where painting originated. */ - ScrArea *sa; + ScrArea *area; /** region where painting originated. */ ARegion *region; /** needed for GP_STROKE_2DSPACE. */ @@ -254,6 +255,10 @@ typedef struct tGPsdata { tGPguide guide; ReportList *reports; + + /** Random settings by stroke */ + GpRandomSettings random_settings; + } tGPsdata; /* ------ */ @@ -296,9 +301,9 @@ static void gp_session_validatebuffer(tGPsdata *p); static bool gpencil_draw_poll(bContext *C) { if (ED_operator_regionactive(C)) { - ScrArea *sa = CTX_wm_area(C); + ScrArea *area = CTX_wm_area(C); /* 3D Viewport */ - if (sa->spacetype != SPACE_VIEW3D) { + if (area->spacetype != SPACE_VIEW3D) { return false; } @@ -353,7 +358,7 @@ static void gp_get_3d_reference(tGPsdata *p, float vec[3]) if (p->ownerPtr.type == &RNA_Object) { ob = (Object *)p->ownerPtr.data; } - ED_gpencil_drawing_reference_get(p->scene, ob, p->gpl, *p->align_flag, vec); + ED_gpencil_drawing_reference_get(p->scene, ob, *p->align_flag, vec); } /* Stroke Editing ---------------------------- */ @@ -444,7 +449,10 @@ static void gp_stroke_convertcoords(tGPsdata *p, const float mval[2], float out[ } int mval_i[2]; - round_v2i_v2fl(mval_i, mval); + float rmval[2]; + rmval[0] = mval[0] - 0.5f; + rmval[1] = mval[1] - 0.5f; + round_v2i_v2fl(mval_i, rmval); if (gpencil_project_check(p) && (ED_view3d_autodist_simple(p->region, mval_i, out, 0, depth))) { @@ -486,6 +494,7 @@ static void gp_stroke_convertcoords(tGPsdata *p, const float mval[2], float out[ /* Apply jitter to stroke point. */ static void gp_brush_jitter(bGPdata *gpd, tGPspoint *pt, const float amplitude) { + const float axis[2] = {0.0f, 1.0f}; /* Jitter is applied perpendicular to the mouse movement vector (2D space). */ float mvec[2]; /* Mouse movement in ints -> floats. */ @@ -493,16 +502,15 @@ static void gp_brush_jitter(bGPdata *gpd, tGPspoint *pt, const float amplitude) tGPspoint *pt_prev = pt - 1; sub_v2_v2v2(mvec, &pt->x, &pt_prev->x); normalize_v2(mvec); + /* Rotate mvec by 90 degrees... */ + float angle = angle_v2v2(mvec, axis); + /* Reduce noise in the direction of the stroke. */ + mvec[0] *= cos(angle); + mvec[1] *= sin(angle); + + /* Scale by displacement amount, and apply. */ + madd_v2_v2fl(&pt->x, mvec, amplitude * 10.0f); } - else { - mvec[0] = 0.0f; - mvec[1] = 0.0f; - } - /* Rotate mvec by 90 degrees... */ - SWAP(float, mvec[0], mvec[1]); - mvec[0] -= mvec[0]; - /* Scale by displacement amount, and apply. */ - madd_v2_v2fl(&pt->x, mvec, amplitude); } /* apply pressure change depending of the angle of the stroke to simulate a pen with shape */ @@ -511,7 +519,6 @@ static void gp_brush_angle(bGPdata *gpd, Brush *brush, tGPspoint *pt, const floa float mvec[2]; float sen = brush->gpencil_settings->draw_angle_factor; /* sensitivity */ float fac; - float mpressure; /* default angle of brush in radians */ float angle = brush->gpencil_settings->draw_angle; @@ -539,9 +546,7 @@ static void gp_brush_angle(bGPdata *gpd, Brush *brush, tGPspoint *pt, const floa fac = 1.0f - fabs(dot_v2v2(v0, mvec)); /* 0.0 to 1.0 */ /* interpolate with previous point for smoother transitions */ - mpressure = interpf(pt->pressure - (sen * fac), (pt - 1)->pressure, 0.3f); - pt->pressure = mpressure; - + pt->pressure = interpf(pt->pressure - (sen * fac), (pt - 1)->pressure, 0.3f); CLAMP(pt->pressure, GPENCIL_ALPHA_OPACITY_THRESH, 1.0f); } } @@ -686,6 +691,78 @@ static void gp_smooth_segment(bGPdata *gpd, const float inf, int from_idx, int t } } +static void gp_apply_randomness(tGPsdata *p, + BrushGpencilSettings *brush_settings, + tGPspoint *pt, + const bool press, + const bool strength, + const bool uv) +{ + bGPdata *gpd = p->gpd; + GpRandomSettings random_settings = p->random_settings; + float value = 0.0f; + /* Apply randomness to pressure. */ + if ((brush_settings->draw_random_press > 0.0f) && (press)) { + if ((brush_settings->flag2 & GP_BRUSH_USE_PRESS_AT_STROKE) == 0) { + float rand = BLI_rng_get_float(p->rng) * 2.0f - 1.0f; + value = 1.0 + rand * 2.0 * brush_settings->draw_random_press; + } + else { + value = 1.0 + random_settings.pressure * brush_settings->draw_random_press; + } + + /* Apply random curve. */ + if (brush_settings->flag2 & GP_BRUSH_USE_PRESSURE_RAND_PRESS) { + value *= BKE_curvemapping_evaluateF( + brush_settings->curve_rand_pressure, 0, random_settings.pen_press); + } + + pt->pressure *= value; + CLAMP(pt->pressure, 0.1f, 1.0f); + } + + /* Apply randomness to color strength. */ + if ((brush_settings->draw_random_strength) && (strength)) { + if ((brush_settings->flag2 & GP_BRUSH_USE_STRENGTH_AT_STROKE) == 0) { + float rand = BLI_rng_get_float(p->rng) * 2.0f - 1.0f; + value = 1.0 + rand * brush_settings->draw_random_strength; + } + else { + value = 1.0 + random_settings.strength * brush_settings->draw_random_strength; + } + + /* Apply random curve. */ + if (brush_settings->flag2 & GP_BRUSH_USE_STRENGTH_RAND_PRESS) { + value *= BKE_curvemapping_evaluateF( + brush_settings->curve_rand_pressure, 0, random_settings.pen_press); + } + + pt->strength *= value; + CLAMP(pt->strength, GPENCIL_STRENGTH_MIN, 1.0f); + } + + /* Apply randomness to uv texture rotation. */ + if ((brush_settings->uv_random > 0.0f) && (uv)) { + if ((brush_settings->flag2 & GP_BRUSH_USE_UV_AT_STROKE) == 0) { + float rand = BLI_hash_int_01(BLI_hash_int_2d((int)pt->x, gpd->runtime.sbuffer_used)) * 2.0f - + 1.0f; + value = rand * M_PI_2 * brush_settings->uv_random; + } + else { + value = random_settings.uv * M_PI_2 * brush_settings->uv_random; + } + + /* Apply random curve. */ + if (brush_settings->flag2 & GP_BRUSH_USE_UV_RAND_PRESS) { + value *= BKE_curvemapping_evaluateF( + brush_settings->curve_rand_uv, 0, random_settings.pen_press); + } + + pt->uv_rot += value; + CLAMP(pt->uv_rot, -M_PI_2, M_PI_2); + } +} + /* add current stroke-point to buffer (returns whether point was successfully added) */ static short gp_stroke_addpoint(tGPsdata *p, const float mval[2], float pressure, double curtime) { @@ -743,10 +820,6 @@ static short gp_stroke_addpoint(tGPsdata *p, const float mval[2], float pressure return GP_STROKEADD_INVALID; } - /* Set vertex colors for buffer. */ - ED_gpencil_sbuffer_vertex_color_set( - p->depsgraph, p->ob, p->scene->toolsettings, p->brush, p->material); - /* get pointer to destination point */ pt = ((tGPspoint *)(gpd->runtime.sbuffer) + gpd->runtime.sbuffer_used); @@ -767,6 +840,15 @@ static short gp_stroke_addpoint(tGPsdata *p, const float mval[2], float pressure CLAMP(pt->strength, GPENCIL_STRENGTH_MIN, 1.0f); } + /* Set vertex colors for buffer. */ + ED_gpencil_sbuffer_vertex_color_set(p->depsgraph, + p->ob, + p->scene->toolsettings, + p->brush, + p->material, + p->random_settings.hsv, + p->random_settings.pen_press); + if (brush_settings->flag & GP_BRUSH_GROUP_RANDOM) { /* Apply jitter to position */ if (brush_settings->draw_jitter > 0.0f) { @@ -780,24 +862,9 @@ static short gp_stroke_addpoint(tGPsdata *p, const float mval[2], float pressure const float fac = rand * square_f(exp_factor) * jitpress; gp_brush_jitter(gpd, pt, fac); } - /* apply randomness to pressure */ - if (brush_settings->draw_random_press > 0.0f) { - float rand = BLI_rng_get_float(p->rng) * 2.0f - 1.0f; - pt->pressure *= 1.0 + rand * 2.0 * brush_settings->draw_random_press; - CLAMP(pt->pressure, GPENCIL_STRENGTH_MIN, 1.0f); - } - /* apply randomness to uv texture rotation */ - if (brush_settings->uv_random > 0.0f) { - float rand = BLI_rng_get_float(p->rng) * 2.0f - 1.0f; - pt->uv_rot += rand * M_PI * brush_settings->uv_random; - CLAMP(pt->uv_rot, -M_PI_2, M_PI_2); - } - /* apply randomness to color strength */ - if (brush_settings->draw_random_strength) { - float rand = BLI_rng_get_float(p->rng) * 2.0f - 1.0f; - pt->strength *= 1.0 + rand * brush_settings->draw_random_strength; - CLAMP(pt->strength, GPENCIL_STRENGTH_MIN, 1.0f); - } + + /* Apply other randomness. */ + gp_apply_randomness(p, brush_settings, pt, true, true, true); } /* apply angle of stroke to brush size */ @@ -809,7 +876,7 @@ static short gp_stroke_addpoint(tGPsdata *p, const float mval[2], float pressure pt->time = (float)(curtime - p->inittime); /* point uv (only 3d view) */ - if ((p->sa->spacetype == SPACE_VIEW3D) && (gpd->runtime.sbuffer_used > 0)) { + if ((p->area->spacetype == SPACE_VIEW3D) && (gpd->runtime.sbuffer_used > 0)) { tGPspoint *ptb = (tGPspoint *)gpd->runtime.sbuffer + gpd->runtime.sbuffer_used - 1; bGPDspoint spt, spt2; @@ -956,9 +1023,10 @@ static void gp_stroke_newfrombuffer(tGPsdata *p) pt->pressure = ptc->pressure; pt->strength = ptc->strength; CLAMP(pt->strength, GPENCIL_STRENGTH_MIN, 1.0f); + copy_v4_v4(pt->vert_color, ptc->vert_color); pt->time = ptc->time; /* Apply the vertex color to point. */ - ED_gpencil_point_vertex_color_set(ts, brush, pt); + ED_gpencil_point_vertex_color_set(ts, brush, pt, ptc); pt++; @@ -991,7 +1059,7 @@ static void gp_stroke_newfrombuffer(tGPsdata *p) CLAMP(pt->strength, GPENCIL_STRENGTH_MIN, 1.0f); pt->time = ptc->time; /* Apply the vertex color to point. */ - ED_gpencil_point_vertex_color_set(ts, brush, pt); + ED_gpencil_point_vertex_color_set(ts, brush, pt, ptc); if ((ts->gpencil_flags & GP_TOOL_FLAG_CREATE_WEIGHTS) && (have_weight)) { BKE_gpencil_dvert_ensure(gps); @@ -1110,11 +1178,12 @@ static void gp_stroke_newfrombuffer(tGPsdata *p) pt->pressure = ptc->pressure; pt->strength = ptc->strength; CLAMP(pt->strength, GPENCIL_STRENGTH_MIN, 1.0f); + copy_v4_v4(pt->vert_color, ptc->vert_color); pt->time = ptc->time; pt->uv_fac = ptc->uv_fac; pt->uv_rot = ptc->uv_rot; /* Apply the vertex color to point. */ - ED_gpencil_point_vertex_color_set(ts, brush, pt); + ED_gpencil_point_vertex_color_set(ts, brush, pt, ptc); if (dvert != NULL) { dvert->totweight = 0; @@ -1142,6 +1211,16 @@ static void gp_stroke_newfrombuffer(tGPsdata *p) reduce += 0.25f; /* reduce the factor */ } } + /* If reproject the stroke using Stroke mode, need to apply a smooth because + * the reprojection creates small jitter. */ + if (ts->gpencil_v3d_align & GP_PROJECT_DEPTH_STROKE) { + float ifac = (float)brush->gpencil_settings->input_samples / 10.0f; + float sfac = interpf(1.0f, 0.2f, ifac); + for (i = 0; i < gps->totpoints - 1; i++) { + BKE_gpencil_stroke_smooth(gps, i, sfac); + BKE_gpencil_stroke_smooth_strength(gps, i, sfac); + } + } /* Simplify adaptive */ if ((brush->gpencil_settings->flag & GP_BRUSH_GROUP_SETTINGS) && @@ -1239,7 +1318,7 @@ static bool gp_stroke_eraser_is_occluded(tGPsdata *p, gp_settings = eraser->gpencil_settings; } - if ((gp_settings != NULL) && (p->sa->spacetype == SPACE_VIEW3D) && + if ((gp_settings != NULL) && (p->area->spacetype == SPACE_VIEW3D) && (gp_settings->flag & GP_BRUSH_OCCLUDE_ERASER)) { RegionView3D *rv3d = p->region->regiondata; bGPDlayer *gpl = p->gpl; @@ -1356,7 +1435,6 @@ static void gp_stroke_eraser_dostroke(tGPsdata *p, bGPDframe *gpf, bGPDstroke *gps, const float mval[2], - const float mvalo[2], const int radius, const rcti *rect) { @@ -1475,7 +1553,7 @@ static void gp_stroke_eraser_dostroke(tGPsdata *p, * eraser region (either within stroke painted, or on its lines) * - this assumes that linewidth is irrelevant */ - if (gp_stroke_inside_circle(mval, mvalo, radius, pc0[0], pc0[1], pc2[0], pc2[1])) { + if (gp_stroke_inside_circle(mval, radius, pc0[0], pc0[1], pc2[0], pc2[1])) { if ((gp_stroke_eraser_is_occluded(p, pt0, pc0[0], pc0[1]) == false) || (gp_stroke_eraser_is_occluded(p, pt1, pc1[0], pc1[1]) == false) || (gp_stroke_eraser_is_occluded(p, pt2, pc2[0], pc2[1]) == false)) { @@ -1591,9 +1669,9 @@ static void gp_stroke_doeraser(tGPsdata *p) rect.xmax = p->mval[0] + calc_radius; rect.ymax = p->mval[1] + calc_radius; - if (p->sa->spacetype == SPACE_VIEW3D) { + if (p->area->spacetype == SPACE_VIEW3D) { if ((gp_settings != NULL) && (gp_settings->flag & GP_BRUSH_OCCLUDE_ERASER)) { - View3D *v3d = p->sa->spacedata.first; + View3D *v3d = p->area->spacedata.first; view3d_region_operator_needs_opengl(p->win, p->region); ED_view3d_autodist_init(p->depsgraph, p->region, v3d, 0); } @@ -1631,8 +1709,8 @@ static void gp_stroke_doeraser(tGPsdata *p) /* Not all strokes in the datablock may be valid in the current editor/context * (e.g. 2D space strokes in the 3D view, if the same datablock is shared) */ - if (ED_gpencil_stroke_can_use_direct(p->sa, gps)) { - gp_stroke_eraser_dostroke(p, gpf, gps, p->mval, p->mvalo, calc_radius, &rect); + if (ED_gpencil_stroke_can_use_direct(p->area, gps)) { + gp_stroke_eraser_dostroke(p, gpf, gps, p->mval, calc_radius, &rect); } } } @@ -1736,13 +1814,19 @@ static void gp_init_drawing_brush(bContext *C, tGPsdata *p) /* if not exist, create a new one */ if ((paint->brush == NULL) || (paint->brush->gpencil_settings == NULL)) { /* create new brushes */ - BKE_brush_gpencil_paint_presets(bmain, ts); + BKE_brush_gpencil_paint_presets(bmain, ts, true); changed = true; } - /* be sure curves are initializated */ + /* Be sure curves are initializated. */ BKE_curvemapping_initialize(paint->brush->gpencil_settings->curve_sensitivity); BKE_curvemapping_initialize(paint->brush->gpencil_settings->curve_strength); BKE_curvemapping_initialize(paint->brush->gpencil_settings->curve_jitter); + BKE_curvemapping_initialize(paint->brush->gpencil_settings->curve_rand_pressure); + BKE_curvemapping_initialize(paint->brush->gpencil_settings->curve_rand_strength); + BKE_curvemapping_initialize(paint->brush->gpencil_settings->curve_rand_uv); + BKE_curvemapping_initialize(paint->brush->gpencil_settings->curve_rand_hue); + BKE_curvemapping_initialize(paint->brush->gpencil_settings->curve_rand_saturation); + BKE_curvemapping_initialize(paint->brush->gpencil_settings->curve_rand_value); /* assign to temp tGPsdata */ p->brush = paint->brush; @@ -1814,7 +1898,7 @@ static bool gp_session_initdata(bContext *C, wmOperator *op, tGPsdata *p) * - must verify that region data is 3D-view (and not something else) */ /* CAUTION: If this is the "toolbar", then this will change on the first stroke */ - p->sa = curarea; + p->area = curarea; p->region = region; p->align_flag = &ts->gpencil_v3d_align; @@ -1829,7 +1913,7 @@ static bool gp_session_initdata(bContext *C, wmOperator *op, tGPsdata *p) } if ((!obact) || (obact->type != OB_GPENCIL)) { - View3D *v3d = p->sa->spacedata.first; + View3D *v3d = p->area->spacedata.first; /* if active object doesn't exist or isn't a GP Object, create one */ const float *cur = p->scene->cursor.location; @@ -1987,8 +2071,15 @@ static void gp_paint_initstroke(tGPsdata *p, eGPencil_PaintModes paintmode, Deps return; } - /* Eraser mode: If no active strokes, just return. */ + /* Eraser mode: If no active strokes, add one or just return. */ if (paintmode == GP_PAINTMODE_ERASER) { + /* Eraser mode: + * 1) Add new frames to all frames that we might touch, + * 2) Ensure that p->gpf refers to the frame used for the active layer + * (to avoid problems with other tools which expect it to exist) + * + * This is done only if additive drawing is enabled. + */ bool has_layer_to_erase = false; LISTBASE_FOREACH (bGPDlayer *, gpl, &p->gpd->layers) { @@ -1997,12 +2088,27 @@ static void gp_paint_initstroke(tGPsdata *p, eGPencil_PaintModes paintmode, Deps continue; } + /* Add a new frame if needed (and based off the active frame, + * as we need some existing strokes to erase) + * + * Note: We don't add a new frame if there's nothing there now, so + * -> If there are no frames at all, don't add one + * -> If there are no strokes in that frame, don't add a new empty frame + */ if (gpl->actframe && gpl->actframe->strokes.first) { + if (ts->gpencil_flags & GP_TOOL_FLAG_RETAIN_LAST) { + gpl->actframe = BKE_gpencil_layer_frame_get(gpl, CFRA, GP_GETFRAME_ADD_COPY); + } has_layer_to_erase = true; break; } } + /* Ensure this gets set. */ + if (ts->gpencil_flags & GP_TOOL_FLAG_RETAIN_LAST) { + p->gpf = p->gpl->actframe; + } + if (has_layer_to_erase == false) { p->status = GP_STATUS_ERROR; return; @@ -2056,8 +2162,8 @@ static void gp_paint_initstroke(tGPsdata *p, eGPencil_PaintModes paintmode, Deps /* when drawing in the camera view, in 2D space, set the subrect */ p->subrect = NULL; if ((*p->align_flag & GP_PROJECT_VIEWSPACE) == 0) { - if (p->sa->spacetype == SPACE_VIEW3D) { - View3D *v3d = p->sa->spacedata.first; + if (p->area->spacetype == SPACE_VIEW3D) { + View3D *v3d = p->area->spacedata.first; RegionView3D *rv3d = p->region->regiondata; /* for camera view set the subrect */ @@ -2074,7 +2180,7 @@ static void gp_paint_initstroke(tGPsdata *p, eGPencil_PaintModes paintmode, Deps p->gsc.gpd = p->gpd; p->gsc.gpl = p->gpl; - p->gsc.sa = p->sa; + p->gsc.area = p->area; p->gsc.region = p->region; p->gsc.v2d = p->v2d; @@ -2085,7 +2191,7 @@ static void gp_paint_initstroke(tGPsdata *p, eGPencil_PaintModes paintmode, Deps /* check if points will need to be made in view-aligned space */ if (*p->align_flag & GP_PROJECT_VIEWSPACE) { - switch (p->sa->spacetype) { + switch (p->area->spacetype) { case SPACE_VIEW3D: { p->gpd->runtime.sbuffer_sflag |= GP_STROKE_3DSPACE; break; @@ -2110,7 +2216,7 @@ static void gp_paint_strokeend(tGPsdata *p) * the conversions will project the values correctly... */ if (gpencil_project_check(p)) { - View3D *v3d = p->sa->spacedata.first; + View3D *v3d = p->area->spacedata.first; /* need to restore the original projection settings before packing up */ view3d_region_operator_needs_opengl(p->win, p->region); @@ -2193,18 +2299,17 @@ static void gpencil_draw_eraser(bContext *UNUSED(C), int x, int y, void *p_ptr) } /* Turn brush cursor in 3D view on/off */ -static void gpencil_draw_toggle_eraser_cursor(bContext *C, tGPsdata *p, short enable) +static void gpencil_draw_toggle_eraser_cursor(tGPsdata *p, short enable) { if (p->erasercursor && !enable) { /* clear cursor */ - WM_paint_cursor_end(CTX_wm_manager(C), p->erasercursor); + WM_paint_cursor_end(p->erasercursor); p->erasercursor = NULL; } else if (enable && !p->erasercursor) { ED_gpencil_toggle_brush_cursor(p->C, false, NULL); /* enable cursor */ - p->erasercursor = WM_paint_cursor_activate(CTX_wm_manager(C), - SPACE_TYPE_ANY, + p->erasercursor = WM_paint_cursor_activate(SPACE_TYPE_ANY, RGN_TYPE_ANY, NULL, /* XXX */ gpencil_draw_eraser, @@ -2229,7 +2334,7 @@ static void gpencil_draw_exit(bContext *C, wmOperator *op) /* check size of buffer before cleanup, to determine if anything happened here */ if (p->paintmode == GP_PAINTMODE_ERASER) { /* turn off radial brush cursor */ - gpencil_draw_toggle_eraser_cursor(C, p, false); + gpencil_draw_toggle_eraser_cursor(p, false); } /* always store the new eraser size to be used again next time @@ -2241,7 +2346,7 @@ static void gpencil_draw_exit(bContext *C, wmOperator *op) } /* restore cursor to indicate end of drawing */ - if (p->sa->spacetype != SPACE_VIEW3D) { + if (p->area->spacetype != SPACE_VIEW3D) { WM_cursor_modal_restore(CTX_wm_window(C)); } else { @@ -2688,6 +2793,8 @@ static void gpencil_draw_apply_event(bContext *C, /* handle pressure sensitivity (which is supplied by tablets or otherwise 1.0) */ p->pressure = event->tablet.pressure; + /* By default use pen pressure for random curves but attenuated. */ + p->random_settings.pen_press = pow(p->pressure, 3.0f); /* Hack for pressure sensitive eraser on D+RMB when using a tablet: * The pen has to float over the tablet surface, resulting in @@ -3040,11 +3147,13 @@ static int gpencil_draw_invoke(bContext *C, wmOperator *op, const wmEvent *event else { p = op->customdata; } + /* Init random settings. */ + ED_gpencil_init_random_settings(p->brush, event->mval, &p->random_settings); /* TODO: set any additional settings that we can take from the events? * if eraser is on, draw radial aid */ if (p->paintmode == GP_PAINTMODE_ERASER) { - gpencil_draw_toggle_eraser_cursor(C, p, true); + gpencil_draw_toggle_eraser_cursor(p, true); } else { ED_gpencil_toggle_brush_cursor(C, true, NULL); @@ -3094,10 +3203,10 @@ static int gpencil_draw_invoke(bContext *C, wmOperator *op, const wmEvent *event } /* gpencil modal operator stores area, which can be removed while using it (like fullscreen) */ -static bool gpencil_area_exists(bContext *C, ScrArea *sa_test) +static bool gpencil_area_exists(bContext *C, ScrArea *area_test) { - bScreen *sc = CTX_wm_screen(C); - return (BLI_findindex(&sc->areabase, sa_test) != -1); + bScreen *screen = CTX_wm_screen(C); + return (BLI_findindex(&screen->areabase, area_test) != -1); } static tGPsdata *gpencil_stroke_begin(bContext *C, wmOperator *op) @@ -3107,7 +3216,7 @@ static tGPsdata *gpencil_stroke_begin(bContext *C, wmOperator *op) /* we must check that we're still within the area that we're set up to work from * otherwise we could crash (see bug #20586) */ - if (CTX_wm_area(C) != p->sa) { + if (CTX_wm_area(C) != p->area) { printf("\t\t\tGP - wrong area execution abort!\n"); p->status = GP_STATUS_ERROR; } @@ -3125,6 +3234,30 @@ static tGPsdata *gpencil_stroke_begin(bContext *C, wmOperator *op) return op->customdata; } +/* Apply pressure change depending of the angle of the stroke for a segment. */ +static void gp_brush_angle_segment(tGPsdata *p, tGPspoint *pt_prev, tGPspoint *pt) +{ + Brush *brush = p->brush; + /* Sensitivity. */ + const float sen = brush->gpencil_settings->draw_angle_factor; + /* Default angle of brush in radians */ + const float angle = brush->gpencil_settings->draw_angle; + + float mvec[2]; + float fac; + + /* angle vector of the brush with full thickness */ + float v0[2] = {cos(angle), sin(angle)}; + + mvec[0] = pt->x - pt_prev->x; + mvec[1] = pt->y - pt_prev->y; + normalize_v2(mvec); + fac = 1.0f - fabs(dot_v2v2(v0, mvec)); /* 0.0 to 1.0 */ + /* interpolate with previous point for smoother transitions */ + pt->pressure = interpf(pt->pressure - (sen * fac), pt_prev->pressure, 0.3f); + CLAMP(pt->pressure, GPENCIL_ALPHA_OPACITY_THRESH, 1.0f); +} + /* Add arc points between two mouse events using the previous segment to determine the vertice of * the arc. * /+ CTL @@ -3139,10 +3272,17 @@ static tGPsdata *gpencil_stroke_begin(bContext *C, wmOperator *op) static void gpencil_add_arc_points(tGPsdata *p, float mval[2], int segments) { bGPdata *gpd = p->gpd; + BrushGpencilSettings *brush_settings = p->brush->gpencil_settings; + if (gpd->runtime.sbuffer_used < 3) { + tGPspoint *points = (tGPspoint *)gpd->runtime.sbuffer; + /* Apply other randomness to first points. */ + for (int i = 0; i < gpd->runtime.sbuffer_used; i++) { + tGPspoint *pt = &points[i]; + gp_apply_randomness(p, brush_settings, pt, false, false, true); + } return; } - int idx_prev = gpd->runtime.sbuffer_used; /* Add space for new arc points. */ @@ -3197,7 +3337,9 @@ static void gpencil_add_arc_points(tGPsdata *p, float mval[2], int segments) corner[0] = midpoint[0] - (cp1[0] - midpoint[0]); corner[1] = midpoint[1] - (cp1[1] - midpoint[1]); + float stepcolor = 1.0f / segments; + tGPspoint *pt_step = pt_prev; for (int i = 0; i < segments; i++) { pt = &points[idx_prev + i - 1]; pt->x = corner[0] + (end[0] - corner[0]) * sinf(a) + (start[0] - corner[0]) * cosf(a); @@ -3206,6 +3348,20 @@ static void gpencil_add_arc_points(tGPsdata *p, float mval[2], int segments) /* Set pressure and strength equals to previous. It will be smoothed later. */ pt->pressure = pt_prev->pressure; pt->strength = pt_prev->strength; + /* Interpolate vertex color. */ + interp_v4_v4v4( + pt->vert_color, pt_before->vert_color, pt_prev->vert_color, stepcolor * (i + 1)); + + /* Apply angle of stroke to brush size to interpolated points but slightly attenuated.. */ + if (brush_settings->draw_angle_factor != 0.0f) { + gp_brush_angle_segment(p, pt_step, pt); + CLAMP(pt->pressure, pt_prev->pressure * 0.5f, 1.0f); + /* Use the previous interpolated point for next segment. */ + pt_step = pt; + } + + /* Apply other randomness. */ + gp_apply_randomness(p, brush_settings, pt, false, false, true); a += step; } @@ -3257,6 +3413,7 @@ static void gpencil_add_guide_points(const tGPsdata *p, /* Set pressure and strength equals to previous. It will be smoothed later. */ pt->pressure = pt_before->pressure; pt->strength = pt_before->strength; + copy_v4_v4(pt->vert_color, pt_before->vert_color); } } else { @@ -3273,6 +3430,7 @@ static void gpencil_add_guide_points(const tGPsdata *p, /* Set pressure and strength equals to previous. It will be smoothed later. */ pt->pressure = pt_before->pressure; pt->strength = pt_before->strength; + copy_v4_v4(pt->vert_color, pt_before->vert_color); } } } @@ -3481,18 +3639,19 @@ static int gpencil_draw_modal(bContext *C, wmOperator *op, const wmEvent *event) */ if ((p->region) && (p->region->regiontype == RGN_TYPE_TOOLS)) { /* Change to whatever region is now under the mouse */ - ARegion *current_region = BKE_area_find_region_xy(p->sa, RGN_TYPE_ANY, event->x, event->y); + ARegion *current_region = BKE_area_find_region_xy( + p->area, RGN_TYPE_ANY, event->x, event->y); if (G.debug & G_DEBUG) { - printf("found alternative region %p (old was %p) - at %d %d (sa: %d %d -> %d %d)\n", + printf("found alternative region %p (old was %p) - at %d %d (area: %d %d -> %d %d)\n", current_region, p->region, event->x, event->y, - p->sa->totrct.xmin, - p->sa->totrct.ymin, - p->sa->totrct.xmax, - p->sa->totrct.ymax); + p->area->totrct.xmin, + p->area->totrct.ymin, + p->area->totrct.xmax, + p->area->totrct.ymax); } if (current_region) { @@ -3540,7 +3699,7 @@ static int gpencil_draw_modal(bContext *C, wmOperator *op, const wmEvent *event) p->paintmode = RNA_enum_get(op->ptr, "mode"); } - gpencil_draw_toggle_eraser_cursor(C, p, p->paintmode == GP_PAINTMODE_ERASER); + gpencil_draw_toggle_eraser_cursor(p, p->paintmode == GP_PAINTMODE_ERASER); /* not painting, so start stroke (this should be mouse-button down) */ p = gpencil_stroke_begin(C, op); @@ -3637,7 +3796,7 @@ static int gpencil_draw_modal(bContext *C, wmOperator *op, const wmEvent *event) } /* gpencil modal operator stores area, which can be removed while using it (like fullscreen) */ - if (0 == gpencil_area_exists(C, p->sa)) { + if (0 == gpencil_area_exists(C, p->area)) { estate = OPERATOR_CANCELLED; } else { |