diff options
Diffstat (limited to 'source/blender/gpencil_modifiers/intern/MOD_gpencilweight_angle.c')
-rw-r--r-- | source/blender/gpencil_modifiers/intern/MOD_gpencilweight_angle.c | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilweight_angle.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilweight_angle.c new file mode 100644 index 00000000000..2c0f3d2d8ad --- /dev/null +++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilweight_angle.c @@ -0,0 +1,260 @@ +/* + * 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) 2021, Blender Foundation + * This is a new part of Blender + */ + +/** \file + * \ingroup modifiers + */ + +#include <stdio.h> + +#include "BLI_listbase.h" +#include "BLI_math.h" +#include "BLI_utildefines.h" + +#include "DNA_defaults.h" +#include "DNA_gpencil_modifier_types.h" +#include "DNA_gpencil_types.h" +#include "DNA_meshdata_types.h" +#include "DNA_object_types.h" +#include "DNA_screen_types.h" + +#include "BKE_colortools.h" +#include "BKE_context.h" +#include "BKE_deform.h" +#include "BKE_gpencil.h" +#include "BKE_gpencil_modifier.h" +#include "BKE_lib_query.h" +#include "BKE_modifier.h" +#include "BKE_screen.h" + +#include "DEG_depsgraph.h" +#include "DEG_depsgraph_build.h" +#include "DEG_depsgraph_query.h" + +#include "UI_interface.h" +#include "UI_resources.h" + +#include "RNA_access.h" + +#include "MOD_gpencil_modifiertypes.h" +#include "MOD_gpencil_ui_common.h" +#include "MOD_gpencil_util.h" + +static void initData(GpencilModifierData *md) +{ + WeightAngleGpencilModifierData *gpmd = (WeightAngleGpencilModifierData *)md; + + BLI_assert(MEMCMP_STRUCT_AFTER_IS_ZERO(gpmd, modifier)); + + MEMCPY_STRUCT_AFTER(gpmd, DNA_struct_default_get(WeightAngleGpencilModifierData), modifier); +} + +static void copyData(const GpencilModifierData *md, GpencilModifierData *target) +{ + BKE_gpencil_modifier_copydata_generic(md, target); +} + +/* change stroke thickness */ +static void deformStroke(GpencilModifierData *md, + Depsgraph *UNUSED(depsgraph), + Object *ob, + bGPDlayer *gpl, + bGPDframe *UNUSED(gpf), + bGPDstroke *gps) +{ + WeightAngleGpencilModifierData *mmd = (WeightAngleGpencilModifierData *)md; + const int def_nr = BKE_object_defgroup_name_index(ob, mmd->vgname); + + if (!is_stroke_affected_by_modifier(ob, + mmd->layername, + mmd->material, + mmd->pass_index, + mmd->layer_pass, + 1, + gpl, + gps, + mmd->flag & GP_WEIGHT_INVERT_LAYER, + mmd->flag & GP_WEIGHT_INVERT_PASS, + mmd->flag & GP_WEIGHT_INVERT_LAYERPASS, + mmd->flag & GP_WEIGHT_INVERT_MATERIAL)) { + return; + } + + const int target_def_nr = BKE_object_defgroup_name_index(ob, mmd->target_vgname); + + if (target_def_nr == -1) { + return; + } + + /* Use default Z up. */ + float vec_axis[3] = {0.0f, 0.0f, 1.0f}; + float axis[3] = {0.0f, 0.0f, 0.0f}; + axis[mmd->axis] = 1.0f; + float vec_ref[3]; + /* Apply modifier rotation (sub 90 degrees for Y axis due Z-Up vector). */ + float rot_angle = mmd->angle - ((mmd->axis == 1) ? M_PI_2 : 0.0f); + rotate_normalized_v3_v3v3fl(vec_ref, vec_axis, axis, rot_angle); + + /* Apply the rotation of the object. */ + if (mmd->space == GP_SPACE_LOCAL) { + mul_mat3_m4_v3(ob->obmat, vec_ref); + } + + /* Ensure there is a vertex group. */ + BKE_gpencil_dvert_ensure(gps); + + float weight_pt = 1.0f; + for (int i = 0; i < gps->totpoints; i++) { + MDeformVert *dvert = gps->dvert != NULL ? &gps->dvert[i] : NULL; + /* Verify point is part of vertex group. */ + float weight = get_modifier_point_weight( + dvert, (mmd->flag & GP_WEIGHT_INVERT_VGROUP) != 0, def_nr); + if (weight < 0.0f) { + continue; + } + + /* Special case for single points. */ + if (gps->totpoints == 1) { + weight_pt = 1.0f; + break; + } + + bGPDspoint *pt1 = (i > 0) ? &gps->points[i] : &gps->points[i + 1]; + bGPDspoint *pt2 = (i > 0) ? &gps->points[i - 1] : &gps->points[i]; + float fpt1[3], fpt2[3]; + mul_v3_m4v3(fpt1, ob->obmat, &pt1->x); + mul_v3_m4v3(fpt2, ob->obmat, &pt2->x); + + float vec[3]; + sub_v3_v3v3(vec, fpt1, fpt2); + float angle = angle_on_axis_v3v3_v3(vec_ref, vec, axis); + /* Use sin to get a value between 0 and 1. */ + weight_pt = 1.0f - sin(angle); + + /* Invert weight if required. */ + if (mmd->flag & GP_WEIGHT_INVERT_OUTPUT) { + weight_pt = 1.0f - weight_pt; + } + /* Assign weight. */ + dvert = gps->dvert != NULL ? &gps->dvert[i] : NULL; + if (dvert != NULL) { + MDeformWeight *dw = BKE_defvert_ensure_index(dvert, target_def_nr); + if (dw) { + dw->weight = (mmd->flag & GP_WEIGHT_MULTIPLY_DATA) ? dw->weight * weight_pt : weight_pt; + CLAMP(dw->weight, mmd->min_weight, 1.0f); + } + } + } +} + +static void bakeModifier(struct Main *UNUSED(bmain), + Depsgraph *depsgraph, + GpencilModifierData *md, + Object *ob) +{ + bGPdata *gpd = ob->data; + + LISTBASE_FOREACH (bGPDlayer *, gpl, &gpd->layers) { + LISTBASE_FOREACH (bGPDframe *, gpf, &gpl->frames) { + LISTBASE_FOREACH (bGPDstroke *, gps, &gpf->strokes) { + deformStroke(md, depsgraph, ob, gpl, gpf, gps); + } + } + } +} + +static void foreachIDLink(GpencilModifierData *md, Object *ob, IDWalkFunc walk, void *userData) +{ + WeightAngleGpencilModifierData *mmd = (WeightAngleGpencilModifierData *)md; + + walk(userData, ob, (ID **)&mmd->material, IDWALK_CB_USER); +} + +static bool isDisabled(GpencilModifierData *md, int UNUSED(userRenderParams)) +{ + WeightAngleGpencilModifierData *mmd = (WeightAngleGpencilModifierData *)md; + + return (mmd->target_vgname[0] == '\0'); +} + +static void panel_draw(const bContext *UNUSED(C), Panel *panel) +{ + uiLayout *row, *sub; + uiLayout *layout = panel->layout; + + PointerRNA ob_ptr; + PointerRNA *ptr = gpencil_modifier_panel_get_property_pointers(panel, &ob_ptr); + + uiLayoutSetPropSep(layout, true); + row = uiLayoutRow(layout, true); + uiItemPointerR(row, ptr, "target_vertex_group", &ob_ptr, "vertex_groups", NULL, ICON_NONE); + sub = uiLayoutRow(row, true); + bool has_output = RNA_string_length(ptr, "target_vertex_group") != 0; + uiLayoutSetPropDecorate(sub, false); + uiLayoutSetActive(sub, has_output); + uiItemR(sub, ptr, "use_invert_output", 0, "", ICON_ARROW_LEFTRIGHT); + + uiItemR(layout, ptr, "angle", 0, NULL, ICON_NONE); + uiItemR(layout, ptr, "axis", 0, NULL, ICON_NONE); + uiItemR(layout, ptr, "space", 0, NULL, ICON_NONE); + + uiItemR(layout, ptr, "minimum_weight", 0, NULL, ICON_NONE); + uiItemR(layout, ptr, "use_multiply", 0, NULL, ICON_NONE); + + + gpencil_modifier_panel_end(layout, ptr); +} + +static void mask_panel_draw(const bContext *UNUSED(C), Panel *panel) +{ + gpencil_modifier_masking_panel_draw(panel, true, true); +} + +static void panelRegister(ARegionType *region_type) +{ + PanelType *panel_type = gpencil_modifier_panel_register( + region_type, eGpencilModifierType_WeightAngle, panel_draw); + + gpencil_modifier_subpanel_register( + region_type, "mask", "Influence", NULL, mask_panel_draw, panel_type); +} + +GpencilModifierTypeInfo modifierType_Gpencil_WeightAngle = { + /* name */ "Vertex Weight Angle", + /* structName */ "WeightAngleGpencilModifierData", + /* structSize */ sizeof(WeightAngleGpencilModifierData), + /* type */ eGpencilModifierTypeType_Gpencil, + /* flags */ 0, + + /* copyData */ copyData, + + /* deformStroke */ deformStroke, + /* generateStrokes */ NULL, + /* bakeModifier */ bakeModifier, + /* remapTime */ NULL, + + /* initData */ initData, + /* freeData */ NULL, + /* isDisabled */ isDisabled, + /* updateDepsgraph */ NULL, + /* dependsOnTime */ NULL, + /* foreachIDLink */ foreachIDLink, + /* foreachTexLink */ NULL, + /* panelRegister */ panelRegister, +}; |