Falk David
0be88c7d15
Differential Revision: https://developer.blender.org/D8660 This patch is the result of the GSoC 2020 "Editing Grease Pencil Strokes Using Curves" project. It adds a submode to greasepencil edit mode that allows for the transformation of greasepencil strokes using bezier curves. More information about the project can be found here: https://wiki.blender.org/wiki/User:Filedescriptor/GSoC_2020.
286 lines
9.2 KiB
C
286 lines
9.2 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2017, Blender Foundation
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* This is a new part of Blender
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*/
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/** \file
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* \ingroup modifiers
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*/
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#include <stdio.h>
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#include <string.h> /* For #MEMCPY_STRUCT_AFTER. */
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#include "BLI_listbase.h"
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#include "BLI_utildefines.h"
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#include "BLT_translation.h"
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#include "DNA_defaults.h"
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#include "DNA_gpencil_modifier_types.h"
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#include "DNA_gpencil_types.h"
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#include "DNA_meshdata_types.h"
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#include "DNA_object_types.h"
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#include "DNA_scene_types.h"
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#include "DNA_screen_types.h"
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#include "BKE_context.h"
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#include "BKE_deform.h"
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#include "BKE_gpencil_geom.h"
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#include "BKE_gpencil_modifier.h"
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#include "BKE_lattice.h"
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#include "BKE_layer.h"
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#include "BKE_lib_query.h"
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#include "BKE_main.h"
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#include "BKE_modifier.h"
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#include "BKE_scene.h"
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#include "BKE_screen.h"
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#include "MEM_guardedalloc.h"
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#include "UI_interface.h"
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#include "UI_resources.h"
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#include "RNA_access.h"
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#include "MOD_gpencil_modifiertypes.h"
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#include "MOD_gpencil_ui_common.h"
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#include "MOD_gpencil_util.h"
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#include "DEG_depsgraph.h"
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#include "DEG_depsgraph_build.h"
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#include "DEG_depsgraph_query.h"
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static void initData(GpencilModifierData *md)
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{
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LatticeGpencilModifierData *gpmd = (LatticeGpencilModifierData *)md;
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BLI_assert(MEMCMP_STRUCT_AFTER_IS_ZERO(gpmd, modifier));
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MEMCPY_STRUCT_AFTER(gpmd, DNA_struct_default_get(LatticeGpencilModifierData), modifier);
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}
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static void copyData(const GpencilModifierData *md, GpencilModifierData *target)
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{
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BKE_gpencil_modifier_copydata_generic(md, target);
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}
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static void deformStroke(GpencilModifierData *md,
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Depsgraph *UNUSED(depsgraph),
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Object *ob,
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bGPDlayer *gpl,
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bGPDframe *UNUSED(gpf),
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bGPDstroke *gps)
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{
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bGPdata *gpd = ob->data;
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LatticeGpencilModifierData *mmd = (LatticeGpencilModifierData *)md;
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const int def_nr = BKE_object_defgroup_name_index(ob, mmd->vgname);
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if (!is_stroke_affected_by_modifier(ob,
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mmd->layername,
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mmd->material,
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mmd->pass_index,
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mmd->layer_pass,
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1,
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gpl,
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gps,
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mmd->flag & GP_LATTICE_INVERT_LAYER,
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mmd->flag & GP_LATTICE_INVERT_PASS,
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mmd->flag & GP_LATTICE_INVERT_LAYERPASS,
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mmd->flag & GP_LATTICE_INVERT_MATERIAL)) {
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return;
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}
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if (mmd->cache_data == NULL) {
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return;
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}
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for (int i = 0; i < gps->totpoints; i++) {
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bGPDspoint *pt = &gps->points[i];
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MDeformVert *dvert = gps->dvert != NULL ? &gps->dvert[i] : NULL;
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/* verify vertex group */
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const float weight = get_modifier_point_weight(
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dvert, (mmd->flag & GP_LATTICE_INVERT_VGROUP) != 0, def_nr);
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if (weight < 0.0f) {
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continue;
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}
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BKE_lattice_deform_data_eval_co(
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(struct LatticeDeformData *)mmd->cache_data, &pt->x, mmd->strength * weight);
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}
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/* Calc geometry data. */
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BKE_gpencil_stroke_geometry_update(gpd, gps);
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}
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/* FIXME: Ideally we be doing this on a copy of the main depsgraph
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* (i.e. one where we don't have to worry about restoring state)
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*/
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static void bakeModifier(Main *UNUSED(bmain),
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Depsgraph *depsgraph,
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GpencilModifierData *md,
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Object *ob)
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{
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LatticeGpencilModifierData *mmd = (LatticeGpencilModifierData *)md;
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Scene *scene = DEG_get_evaluated_scene(depsgraph);
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struct LatticeDeformData *ldata = NULL;
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bGPdata *gpd = ob->data;
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int oldframe = (int)DEG_get_ctime(depsgraph);
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if (mmd->object == NULL) {
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return;
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}
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LISTBASE_FOREACH (bGPDlayer *, gpl, &gpd->layers) {
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LISTBASE_FOREACH (bGPDframe *, gpf, &gpl->frames) {
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/* apply lattice effects on this frame
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* NOTE: this assumes that we don't want lattice animation on non-keyframed frames
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*/
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CFRA = gpf->framenum;
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BKE_scene_graph_update_for_newframe(depsgraph);
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/* recalculate lattice data */
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BKE_gpencil_lattice_init(ob);
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/* compute lattice effects on this frame */
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LISTBASE_FOREACH (bGPDstroke *, gps, &gpf->strokes) {
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deformStroke(md, depsgraph, ob, gpl, gpf, gps);
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}
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}
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}
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/* free lingering data */
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ldata = (struct LatticeDeformData *)mmd->cache_data;
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if (ldata) {
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BKE_lattice_deform_data_destroy(ldata);
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mmd->cache_data = NULL;
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}
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/* return frame state and DB to original state */
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CFRA = oldframe;
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BKE_scene_graph_update_for_newframe(depsgraph);
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}
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static void freeData(GpencilModifierData *md)
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{
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LatticeGpencilModifierData *mmd = (LatticeGpencilModifierData *)md;
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struct LatticeDeformData *ldata = (struct LatticeDeformData *)mmd->cache_data;
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/* free deform data */
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if (ldata) {
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BKE_lattice_deform_data_destroy(ldata);
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}
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}
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static bool isDisabled(GpencilModifierData *md, int UNUSED(userRenderParams))
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{
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LatticeGpencilModifierData *mmd = (LatticeGpencilModifierData *)md;
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/* The object type check is only needed here in case we have a placeholder
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* object assigned (because the library containing the lattice is missing).
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*
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* In other cases it should be impossible to have a type mismatch.
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*/
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return !mmd->object || mmd->object->type != OB_LATTICE;
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}
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static void updateDepsgraph(GpencilModifierData *md, const ModifierUpdateDepsgraphContext *ctx)
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{
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LatticeGpencilModifierData *lmd = (LatticeGpencilModifierData *)md;
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if (lmd->object != NULL) {
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DEG_add_object_relation(ctx->node, lmd->object, DEG_OB_COMP_GEOMETRY, "Lattice Modifier");
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DEG_add_object_relation(ctx->node, lmd->object, DEG_OB_COMP_TRANSFORM, "Lattice Modifier");
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}
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DEG_add_object_relation(ctx->node, ctx->object, DEG_OB_COMP_TRANSFORM, "Lattice Modifier");
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}
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static void foreachIDLink(GpencilModifierData *md, Object *ob, IDWalkFunc walk, void *userData)
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{
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LatticeGpencilModifierData *mmd = (LatticeGpencilModifierData *)md;
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walk(userData, ob, (ID **)&mmd->material, IDWALK_CB_USER);
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walk(userData, ob, (ID **)&mmd->object, IDWALK_CB_NOP);
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}
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static void panel_draw(const bContext *UNUSED(C), Panel *panel)
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{
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uiLayout *sub, *row, *col;
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uiLayout *layout = panel->layout;
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PointerRNA ob_ptr;
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PointerRNA *ptr = gpencil_modifier_panel_get_property_pointers(panel, &ob_ptr);
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PointerRNA hook_object_ptr = RNA_pointer_get(ptr, "object");
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bool has_vertex_group = RNA_string_length(ptr, "vertex_group") != 0;
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uiLayoutSetPropSep(layout, true);
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col = uiLayoutColumn(layout, false);
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uiItemR(col, ptr, "object", 0, NULL, ICON_NONE);
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if (!RNA_pointer_is_null(&hook_object_ptr) &&
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RNA_enum_get(&hook_object_ptr, "type") == OB_ARMATURE) {
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PointerRNA hook_object_data_ptr = RNA_pointer_get(&hook_object_ptr, "data");
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uiItemPointerR(
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col, ptr, "subtarget", &hook_object_data_ptr, "bones", IFACE_("Bone"), ICON_NONE);
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}
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row = uiLayoutRow(layout, true);
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uiItemPointerR(row, ptr, "vertex_group", &ob_ptr, "vertex_groups", NULL, ICON_NONE);
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sub = uiLayoutRow(row, true);
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uiLayoutSetActive(sub, has_vertex_group);
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uiLayoutSetPropSep(sub, false);
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uiItemR(sub, ptr, "invert_vertex", 0, "", ICON_ARROW_LEFTRIGHT);
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uiItemR(layout, ptr, "strength", UI_ITEM_R_SLIDER, NULL, ICON_NONE);
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gpencil_modifier_panel_end(layout, ptr);
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}
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static void mask_panel_draw(const bContext *UNUSED(C), Panel *panel)
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{
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gpencil_modifier_masking_panel_draw(panel, true, false);
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}
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static void panelRegister(ARegionType *region_type)
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{
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PanelType *panel_type = gpencil_modifier_panel_register(
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region_type, eGpencilModifierType_Lattice, panel_draw);
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gpencil_modifier_subpanel_register(
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region_type, "mask", "Influence", NULL, mask_panel_draw, panel_type);
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}
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GpencilModifierTypeInfo modifierType_Gpencil_Lattice = {
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/* name */ "Lattice",
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/* structName */ "LatticeGpencilModifierData",
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/* structSize */ sizeof(LatticeGpencilModifierData),
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/* type */ eGpencilModifierTypeType_Gpencil,
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/* flags */ eGpencilModifierTypeFlag_Single | eGpencilModifierTypeFlag_SupportsEditmode,
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/* copyData */ copyData,
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/* deformStroke */ deformStroke,
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/* generateStrokes */ NULL,
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/* bakeModifier */ bakeModifier,
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/* remapTime */ NULL,
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/* initData */ initData,
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/* freeData */ freeData,
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/* isDisabled */ isDisabled,
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/* updateDepsgraph */ updateDepsgraph,
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/* dependsOnTime */ NULL,
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/* foreachIDLink */ foreachIDLink,
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/* foreachTexLink */ NULL,
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/* panelRegister */ panelRegister,
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};
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