1 files changed, 142 insertions, 0 deletions
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencil_util.c b/source/blender/gpencil_modifiers/intern/MOD_gpencil_util.c
new file mode 100644
index 00000000000..97d28863095
--- /dev/null
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencil_util.c
@@ -0,0 +1,142 @@
+/*
+ * ***** 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) 2017, Blender Foundation
+ * This is a new part of Blender
+ *
+ * Contributor(s): Antonio Vazquez
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file blender/modifiers/intern/MOD_gpencil_util.c
+ *  \ingroup bke
+ */
+
+
+#include <stdio.h>
+
+#include "MEM_guardedalloc.h"
+
+#include "BLI_blenlib.h"
+#include "BLI_utildefines.h"
+#include "BLI_math_vector.h"
+#include "BLI_math_color.h"
+#include "BLI_rand.h"
+
+#include "DNA_meshdata_types.h"
+#include "DNA_scene_types.h"
+#include "DNA_object_types.h"
+#include "DNA_gpencil_types.h"
+#include "DNA_gpencil_modifier_types.h"
+
+#include "BKE_global.h"
+#include "BKE_object.h"
+#include "BKE_lattice.h"
+#include "BKE_material.h"
+#include "BKE_gpencil.h"
+#include "BKE_gpencil_modifier.h"
+#include "BKE_colortools.h"
+
+#include "MOD_gpencil_modifiertypes.h"
+#include "MOD_gpencil_util.h"
+
+void gpencil_modifier_type_init(GpencilModifierTypeInfo *types[])
+{
+#define INIT_GP_TYPE(typeName) (types[eGpencilModifierType_##typeName] = &modifierType_Gpencil_##typeName)
+	INIT_GP_TYPE(Noise);
+	INIT_GP_TYPE(Subdiv);
+	INIT_GP_TYPE(Simplify);
+	INIT_GP_TYPE(Thick);
+	INIT_GP_TYPE(Tint);
+	INIT_GP_TYPE(Color);
+	INIT_GP_TYPE(Instance);
+	INIT_GP_TYPE(Build);
+	INIT_GP_TYPE(Opacity);
+	INIT_GP_TYPE(Lattice);
+	INIT_GP_TYPE(Mirror);
+	INIT_GP_TYPE(Smooth);
+	INIT_GP_TYPE(Hook);
+	INIT_GP_TYPE(Offset);
+#undef INIT_GP_TYPE
+}
+
+/* verify if valid layer and pass index */
+bool is_stroke_affected_by_modifier(
+        Object *ob, char *mlayername, int mpassindex, int minpoints,
+        bGPDlayer *gpl, bGPDstroke *gps, bool inv1, bool inv2)
+{
+	MaterialGPencilStyle *gp_style = BKE_material_gpencil_settings_get(ob, gps->mat_nr + 1);
+
+	/* omit if filter by layer */
+	if (mlayername[0] != '\0') {
+		if (inv1 == false) {
+			if (!STREQ(mlayername, gpl->info)) {
+				return false;
+			}
+		}
+		else {
+			if (STREQ(mlayername, gpl->info)) {
+				return false;
+			}
+		}
+	}
+	/* verify pass */
+	if (mpassindex > 0) {
+		if (inv2 == false) {
+			if (gp_style->index != mpassindex) {
+				return false;
+			}
+		}
+		else {
+			if (gp_style->index == mpassindex) {
+				return false;
+			}
+		}
+	}
+	/* need to have a minimum number of points */
+	if ((minpoints > 0) && (gps->totpoints < minpoints)) {
+		return false;
+	}
+
+	return true;
+}
+
+/* verify if valid vertex group *and return weight */
+float get_modifier_point_weight(MDeformVert *dvert, int inverse, int vindex)
+{
+	float weight = 1.0f;
+
+	if (vindex >= 0) {
+		weight = BKE_gpencil_vgroup_use_index(dvert, vindex);
+		if ((weight >= 0.0f) && (inverse == 1)) {
+			return -1.0f;
+		}
+
+		if ((weight < 0.0f) && (inverse == 0)) {
+			return -1.0f;
+		}
+
+		/* if inverse, weight is always 1 */
+		if ((weight < 0.0f) && (inverse == 1)) {
+			return 1.0f;
+		}
+
+	}
+
+	return weight;
+}