1 files changed, 103 insertions, 0 deletions
diff --git a/source/blender/shader_fx/intern/FX_shader_swirl.c b/source/blender/shader_fx/intern/FX_shader_swirl.c
new file mode 100644
index 00000000000..9667f466eec
--- /dev/null
+++ b/source/blender/shader_fx/intern/FX_shader_swirl.c
@@ -0,0 +1,103 @@
+/*
+ * ***** 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) 2018, Blender Foundation
+ * This is a new part of Blender
+ *
+ * Contributor(s): Antonio Vazquez
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ *
+ */
+
+/** \file blender/shader_fx/intern/FX_shader_swirl.c
+ *  \ingroup shader_fx
+ */
+
+#include <stdio.h>
+
+#include "DNA_scene_types.h"
+#include "DNA_object_types.h"
+#include "DNA_gpencil_types.h"
+
+#include "BLI_math_base.h"
+#include "BLI_utildefines.h"
+
+#include "BKE_library_query.h"
+#include "BKE_modifier.h"
+#include "BKE_shader_fx.h"
+
+#include "FX_shader_types.h"
+
+#include "DEG_depsgraph.h"
+#include "DEG_depsgraph_build.h"
+
+static void initData(ShaderFxData *md)
+{
+	SwirlShaderFxData *gpmd = (SwirlShaderFxData *)md;
+	gpmd->radius = 100;
+	gpmd->angle = M_PI_2;
+}
+
+static void copyData(const ShaderFxData *md, ShaderFxData *target)
+{
+	BKE_shaderfx_copyData_generic(md, target);
+}
+
+static void updateDepsgraph(ShaderFxData *fx, const ModifierUpdateDepsgraphContext *ctx)
+{
+	SwirlShaderFxData *fxd = (SwirlShaderFxData *)fx;
+	if (fxd->object != NULL) {
+		DEG_add_object_relation(ctx->node, fxd->object, DEG_OB_COMP_GEOMETRY, "Swirl ShaderFx");
+		DEG_add_object_relation(ctx->node, fxd->object, DEG_OB_COMP_TRANSFORM, "Swirl ShaderFx");
+	}
+	DEG_add_object_relation(ctx->node, ctx->object, DEG_OB_COMP_TRANSFORM, "Swirl ShaderFx");
+}
+
+static bool isDisabled(ShaderFxData *fx, int UNUSED(userRenderParams))
+{
+	SwirlShaderFxData *fxd = (SwirlShaderFxData *)fx;
+
+	return !fxd->object;
+}
+
+static void foreachObjectLink(
+	ShaderFxData *fx, Object *ob,
+	ShaderFxObjectWalkFunc walk, void *userData)
+{
+	SwirlShaderFxData *fxd = (SwirlShaderFxData *)fx;
+
+	walk(userData, ob, &fxd->object, IDWALK_CB_NOP);
+}
+
+ShaderFxTypeInfo shaderfx_Type_Swirl = {
+	/* name */              "Swirl",
+	/* structName */        "SwirlShaderFxData",
+	/* structSize */        sizeof(SwirlShaderFxData),
+	/* type */              eShaderFxType_GpencilType,
+	/* flags */             0,
+
+	/* copyData */          copyData,
+
+	/* initData */          initData,
+	/* freeData */          NULL,
+	/* isDisabled */        isDisabled,
+	/* updateDepsgraph */   updateDepsgraph,
+	/* dependsOnTime */     NULL,
+	/* foreachObjectLink */ foreachObjectLink,
+	/* foreachIDLink */     NULL,
+};