diff options
Diffstat (limited to 'source/blender/gpencil_modifiers/intern/MOD_gpenciloffset.c')
-rw-r--r-- | source/blender/gpencil_modifiers/intern/MOD_gpenciloffset.c | 66 |
1 files changed, 65 insertions, 1 deletions
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpenciloffset.c b/source/blender/gpencil_modifiers/intern/MOD_gpenciloffset.c index bffb324f07f..cd29a006aae 100644 --- a/source/blender/gpencil_modifiers/intern/MOD_gpenciloffset.c +++ b/source/blender/gpencil_modifiers/intern/MOD_gpenciloffset.c @@ -26,7 +26,11 @@ #include "BLI_listbase.h" #include "BLI_utildefines.h" +#include "BLT_translation.h" + +#include "BLI_hash.h" #include "BLI_math.h" +#include "BLI_rand.h" #include "DNA_defaults.h" #include "DNA_gpencil_modifier_types.h" @@ -71,7 +75,7 @@ static void deformStroke(GpencilModifierData *md, Depsgraph *UNUSED(depsgraph), Object *ob, bGPDlayer *gpl, - bGPDframe *UNUSED(gpf), + bGPDframe *gpf, bGPDstroke *gps) { OffsetGpencilModifierData *mmd = (OffsetGpencilModifierData *)md; @@ -94,6 +98,46 @@ static void deformStroke(GpencilModifierData *md, mmd->flag & GP_OFFSET_INVERT_MATERIAL)) { return; } + + int seed = mmd->seed; + /* Make sure different modifiers get different seeds. */ + seed += BLI_hash_string(ob->id.name + 2); + seed += BLI_hash_string(md->name); + + float rand[3][3]; + float rand_offset = BLI_hash_int_01(seed); + + /* Get stroke index for random offset. */ + int rnd_index = BLI_findindex(&gpf->strokes, gps); + for (int j = 0; j < 3; j++) { + const uint primes[3] = {2, 3, 7}; + double offset[3] = {0.0f, 0.0f, 0.0f}; + double r[3]; + /* To ensure a nice distribution, we use halton sequence and offset using the seed. */ + BLI_halton_3d(primes, offset, rnd_index, r); + + if ((mmd->flag & GP_OFFSET_UNIFORM_RANDOM_SCALE) && j == 2) { + float rand_value; + rand_value = fmodf(r[0] * 2.0f - 1.0f + rand_offset, 1.0f); + rand_value = fmodf(sin(rand_value * 12.9898f + j * 78.233f) * 43758.5453f, 1.0f); + copy_v3_fl(rand[j], rand_value); + } + else { + for (int i = 0; i < 3; i++) { + rand[j][i] = fmodf(r[i] * 2.0f - 1.0f + rand_offset, 1.0f); + rand[j][i] = fmodf(sin(rand[j][i] * 12.9898f + j * 78.233f) * 43758.5453f, 1.0f); + } + } + } + /* Calculate Random matrix. */ + float mat_rnd[4][4]; + float rnd_loc[3], rnd_rot[3]; + float rnd_scale[3] = {1.0f, 1.0f, 1.0f}; + mul_v3_v3v3(rnd_loc, mmd->rnd_offset, rand[0]); + mul_v3_v3v3(rnd_rot, mmd->rnd_rot, rand[1]); + madd_v3_v3v3(rnd_scale, mmd->rnd_scale, rand[2]); + loc_eul_size_to_mat4(mat_rnd, rnd_loc, rnd_rot, rnd_scale); + bGPdata *gpd = ob->data; for (int i = 0; i < gps->totpoints; i++) { @@ -106,6 +150,9 @@ static void deformStroke(GpencilModifierData *md, if (weight < 0.0f) { continue; } + /* Apply randomness matrix. */ + mul_m4_v3(mat_rnd, &pt->x); + /* Calculate matrix. */ mul_v3_v3fl(loc, mmd->loc, weight); mul_v3_v3fl(rot, mmd->rot, weight); @@ -161,6 +208,21 @@ static void panel_draw(const bContext *UNUSED(C), Panel *panel) gpencil_modifier_panel_end(layout, ptr); } +static void random_panel_draw(const bContext *UNUSED(C), Panel *panel) +{ + uiLayout *layout = panel->layout; + + PointerRNA *ptr = gpencil_modifier_panel_get_property_pointers(panel, NULL); + + uiLayoutSetPropSep(layout, true); + + uiItemR(layout, ptr, "random_offset", 0, IFACE_("Offset"), ICON_NONE); + uiItemR(layout, ptr, "random_rotation", 0, IFACE_("Rotation"), ICON_NONE); + uiItemR(layout, ptr, "random_scale", 0, IFACE_("Scale"), ICON_NONE); + uiItemR(layout, ptr, "use_uniform_random_scale", 0, NULL, ICON_NONE); + uiItemR(layout, ptr, "seed", 0, NULL, ICON_NONE); +} + static void mask_panel_draw(const bContext *UNUSED(C), Panel *panel) { gpencil_modifier_masking_panel_draw(panel, true, true); @@ -171,6 +233,8 @@ static void panelRegister(ARegionType *region_type) PanelType *panel_type = gpencil_modifier_panel_register( region_type, eGpencilModifierType_Offset, panel_draw); gpencil_modifier_subpanel_register( + region_type, "randomize", "Randomize", NULL, random_panel_draw, panel_type); + gpencil_modifier_subpanel_register( region_type, "mask", "Influence", NULL, mask_panel_draw, panel_type); } |