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Differential D2889 Diff 9436 source/blender/modifiers/intern/MOD_gpencilarray.c

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source/blender/modifiers/intern/MOD_gpencilarray.c

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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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) 2005 by the Blender Foundation.
* All rights reserved.
*
* Contributor(s): Antonio Vazquez
*
* ***** END GPL LICENSE BLOCK *****
*
*/
/** \file blender/modifiers/intern/MOD_gpencilarray.c
* \ingroup modifiers
*/
#include <stdio.h>
#include "DNA_scene_types.h"
#include "DNA_object_types.h"
#include "DNA_gpencil_types.h"
#include "BLI_utildefines.h"
#include "BLI_math_vector.h"
#include "BKE_DerivedMesh.h"
#include "BKE_gpencil.h"
#include "BKE_context.h"
#include "BKE_object.h"
#include "BKE_main.h"
#include "BKE_scene.h"
#include "BKE_layer.h"
#include "BKE_collection.h"
#include "DEG_depsgraph.h"
#include "DEG_depsgraph_build.h"
#include "MOD_modifiertypes.h"
static void initData(ModifierData *md)
{
GpencilArrayModifierData *gpmd = (GpencilArrayModifierData *)md;
gpmd->count[0] = 1;
gpmd->count[1] = 1;
gpmd->count[2] = 1;
gpmd->offset[0] = 1.0f;
gpmd->offset[1] = 1.0f;
gpmd->offset[2] = 1.0f;
gpmd->shift[0] = 0.0f;
gpmd->shift[2] = 0.0f;
gpmd->shift[3] = 0.0f;
gpmd->scale[0] = 1.0f;
gpmd->scale[1] = 1.0f;
gpmd->scale[2] = 1.0f;
gpmd->rnd_rot = 0.5f;
gpmd->rnd_size = 0.5f;
gpmd->lock_axis |= GP_LOCKAXIS_X;
/* fill random values */
BKE_gpencil_fill_random_array(gpmd->rnd, 20);
gpmd->rnd[0] = 1;
BKE_gpencil_batch_cache_alldirty();
}
static void copyData(ModifierData *md, ModifierData *target)
{
modifier_copyData_generic(md, target);
}
/* helper to create a new object */
static Object *object_add_type(bContext *C, int UNUSED(type), const char *UNUSED(name), Object *from_ob)
{
Main *bmain = CTX_data_main(C);
Scene *scene = CTX_data_scene(C);
Object *ob;
const float loc[3] = { 0, 0, 0 };
const float rot[3] = { 0, 0, 0 };
ob = BKE_object_copy(bmain, from_ob);
BKE_collection_object_add_from(scene, from_ob, ob);
copy_v3_v3(ob->loc, loc);
copy_v3_v3(ob->rot, rot);
DEG_id_type_tag(bmain, ID_OB);
DEG_relations_tag_update(bmain);
DEG_id_tag_update(&scene->id, 0);
return ob;
}
campbellbartonUnsubmitted
Not Done
Inline Actions

Why is this needed? adding new objects within applyModifier is quite strange.

campbellbarton: Why is this needed? adding new objects within applyModifier is quite strange.
sergeyUnsubmitted
Not Done
Inline Actions

There must be NO dependency graph changes from within modifier stack. Period.

sergey: There must be NO dependency graph changes from within modifier stack. Period.
static DerivedMesh *applyModifier(
ModifierData *md, const struct EvaluationContext *UNUSED(eval_ctx), Object *ob,
DerivedMesh *UNUSED(dm),
ModifierApplyFlag UNUSED(flag))
{
GpencilArrayModifierData *mmd = (GpencilArrayModifierData *)md;
ModifierData *fmd;
bContext *C = (bContext *)mmd->C;
sergeyUnsubmitted
Not Done
Inline Actions

You must not use bContext from inside modifier. It is undefined.

sergey: You must not use bContext from inside modifier. It is undefined.
Main *bmain = CTX_data_main(C);
sergeyUnsubmitted
Not Done
Inline Actions

No bmain access either, only access data which is used by modifier itself.

sergey: No bmain access either, only access data which is used by modifier itself.
Object *newob = NULL;
int xyz[3], sh;
float mat[4][4], finalmat[4][4];
float rot[3];
if ((!ob) || (!ob->gpd)) {
return NULL;
}
/* reset random */
mmd->rnd[0] = 1;
for (int x = 0; x < mmd->count[0]; ++x) {
for (int y = 0; y < mmd->count[1]; ++y) {
for (int z = 0; z < mmd->count[2]; ++z) {
ARRAY_SET_ITEMS(xyz, x, y, z);
if ((x == 0) && (y == 0) && (z == 0)) {
continue;
}
BKE_gpencil_array_modifier(0, mmd, ob, xyz, mat);
mul_m4_m4m4(finalmat, mat, ob->obmat);
/* create a new object and new gp datablock */
newob = object_add_type(C, OB_GPENCIL, md->name, ob);
id_us_min((ID *)ob->gpd);
newob->gpd = BKE_gpencil_data_duplicate(bmain, ob->gpd, false);
/* remove array on destination object */
fmd = (ModifierData *) BLI_findstring(&newob->modifiers, md->name, offsetof(ModifierData, name));
if (fmd) {
BLI_remlink(&newob->modifiers, fmd);
modifier_free(fmd);
}
/* moves to new origin */
sh = x;
if (mmd->lock_axis == GP_LOCKAXIS_Y) {
sh = y;
}
if (mmd->lock_axis == GP_LOCKAXIS_Z) {
sh = z;
}
madd_v3_v3fl(finalmat[3], mmd->shift, sh);
copy_v3_v3(newob->loc, finalmat[3]);
/* apply rotation */
mat4_to_eul(rot, finalmat);
copy_v3_v3(newob->rot, rot);
/* apply scale */
ARRAY_SET_ITEMS(newob->size, finalmat[0][0], finalmat[1][1], finalmat[2][2]);
}
}
}
return NULL;
}
ModifierTypeInfo modifierType_GpencilArray = {
/* name */ "Array",
/* structName */ "GpencilArrayModifierData",
/* structSize */ sizeof(GpencilArrayModifierData),
/* type */ eModifierTypeType_Gpencil,
/* flags */ eModifierTypeFlag_GpencilMod,
/* copyData */ copyData,
/* deformVerts */ NULL,
/* deformMatrices */ NULL,
/* deformVertsEM */ NULL,
/* deformMatricesEM */ NULL,
/* applyModifier */ applyModifier,
/* applyModifierEM */ NULL,
/* initData */ initData,
/* requiredDataMask */ NULL,
/* freeData */ NULL,
/* isDisabled */ NULL,
/* updateDepsgraph */ NULL,
/* dependsOnTime */ NULL,
/* dependsOnNormals */ NULL,
/* foreachObjectLink */ NULL,
/* foreachIDLink */ NULL,
/* foreachTexLink */ NULL,
};