From a2438373b317005c19288d183af4b08f54f80428 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sybren=20A=2E=20St=C3=BCvel?= <sybren@stuvel.eu>
Date: Thu, 17 May 2018 15:26:59 +0200
Subject: =?UTF-8?q?Modifiers:=20ported=20Collision=20DerivedMesh=20?=
 =?UTF-8?q?=E2=86=92=20Mesh?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 source/blender/modifiers/intern/MOD_collision.c | 59 ++++++++++++++++---------
 1 file changed, 38 insertions(+), 21 deletions(-)

(limited to 'source/blender/modifiers/intern/MOD_collision.c')

diff --git a/source/blender/modifiers/intern/MOD_collision.c b/source/blender/modifiers/intern/MOD_collision.c
index c9037074ecc..036954a2774 100644
--- a/source/blender/modifiers/intern/MOD_collision.c
+++ b/source/blender/modifiers/intern/MOD_collision.c
@@ -33,6 +33,7 @@
  */
 
 #include "DNA_object_types.h"
+#include "DNA_mesh_types.h"
 #include "DNA_meshdata_types.h"
 
 #include "MEM_guardedalloc.h"
@@ -41,13 +42,17 @@
 #include "BLI_utildefines.h"
 
 #include "BKE_collision.h"
-#include "BKE_cdderivedmesh.h"
 #include "BKE_global.h"
+#include "BKE_library.h"
+#include "BKE_mesh.h"
 #include "BKE_modifier.h"
 #include "BKE_pointcache.h"
 #include "BKE_scene.h"
 
 #include "MOD_modifiertypes.h"
+#include "MOD_util.h"
+
+#include "DEG_depsgraph_query.h"
 
 static void initData(ModifierData *md) 
 {
@@ -97,37 +102,48 @@ static bool dependsOnTime(ModifierData *UNUSED(md))
 
 static void deformVerts(
         ModifierData *md, const ModifierEvalContext *ctx,
-        DerivedMesh *derivedData,
+        Mesh *mesh,
         float (*vertexCos)[3],
         int UNUSED(numVerts))
 {
 	CollisionModifierData *collmd = (CollisionModifierData *) md;
-	DerivedMesh *dm = NULL;
+	Mesh *mesh_src;
 	MVert *tempVert = NULL;
 	Object *ob = ctx->object;
 	
-	/* if possible use/create DerivedMesh */
-	if (derivedData) dm = CDDM_copy(derivedData);
-	else if (ob->type == OB_MESH) dm = CDDM_from_mesh(ob->data);
-	
+	if (mesh == NULL) {
+		mesh_src = get_mesh(ob, NULL, NULL, NULL, false, false);
+	}
+	else {
+		/* Not possible to use get_mesh() in this case as we'll modify its vertices
+		 * and get_mesh() would return 'mesh' directly. */
+		BKE_id_copy_ex(
+		        NULL, (ID *)mesh, (ID **)&mesh_src,
+		        LIB_ID_CREATE_NO_MAIN |
+		        LIB_ID_CREATE_NO_USER_REFCOUNT |
+		        LIB_ID_CREATE_NO_DEG_TAG |
+		        LIB_ID_COPY_NO_PREVIEW,
+		        false);
+	}
+
 	if (!ob->pd) {
 		printf("CollisionModifier deformVerts: Should not happen!\n");
 		return;
 	}
 	
-	if (dm) {
+	if (mesh_src) {
 		float current_time = 0;
 		unsigned int mvert_num = 0;
 
-		CDDM_apply_vert_coords(dm, vertexCos);
-		CDDM_calc_normals(dm);
+		BKE_mesh_apply_vert_coords(mesh_src, vertexCos);
+		BKE_mesh_calc_normals(mesh_src);
 		
 		current_time = DEG_get_ctime(ctx->depsgraph);
 		
 		if (G.debug_value > 0)
 			printf("current_time %f, collmd->time_xnew %f\n", current_time, collmd->time_xnew);
 		
-		mvert_num = dm->getNumVerts(dm);
+		mvert_num = mesh_src->totvert;
 		
 		if (current_time > collmd->time_xnew) {
 			unsigned int i;
@@ -138,7 +154,7 @@ static void deformVerts(
 
 			if (collmd->time_xnew == -1000) { /* first time */
 
-				collmd->x = dm->dupVertArray(dm); /* frame start position */
+				collmd->x = MEM_dupallocN(mesh_src->mvert); /* frame start position */
 
 				for (i = 0; i < mvert_num; i++) {
 					/* we save global positions */
@@ -152,12 +168,12 @@ static void deformVerts(
 
 				collmd->mvert_num = mvert_num;
 
-				collmd->tri_num = dm->getNumLoopTri(dm);
 				{
-					const MLoop *mloop = dm->getLoopArray(dm);
-					const MLoopTri *looptri = dm->getLoopTriArray(dm);
+					const MLoop *mloop = mesh_src->mloop;
+					const MLoopTri *looptri = BKE_mesh_runtime_looptri_ensure(mesh_src);
+					collmd->tri_num = BKE_mesh_runtime_looptri_len(mesh_src);
 					MVertTri *tri = MEM_malloc_arrayN(collmd->tri_num, sizeof(*tri), __func__);
-					DM_verttri_from_looptri(tri, mloop, looptri, collmd->tri_num);
+					BKE_mesh_runtime_verttri_from_looptri(tri, mloop, looptri, collmd->tri_num);
 					collmd->tri = tri;
 				}
 
@@ -177,7 +193,7 @@ static void deformVerts(
 				collmd->xnew = tempVert;
 				collmd->time_x = collmd->time_xnew;
 
-				memcpy(collmd->xnew, dm->getVertArray(dm), mvert_num * sizeof(MVert));
+				memcpy(collmd->xnew, mesh_src->mvert, mvert_num * sizeof(MVert));
 
 				bool is_static = true;
 
@@ -238,8 +254,9 @@ static void deformVerts(
 		}
 	}
 	
-	if (dm)
-		dm->release(dm);
+	if (mesh_src != mesh) {
+		BKE_id_free(NULL, mesh_src);
+	}
 }
 
 
@@ -253,14 +270,14 @@ ModifierTypeInfo modifierType_Collision = {
 
 	/* copyData */          NULL,
 
-	/* deformVerts_DM */    deformVerts,
+	/* deformVerts_DM */    NULL,
 	/* deformMatrices_DM */ NULL,
 	/* deformVertsEM_DM */  NULL,
 	/* deformMatricesEM_DM*/NULL,
 	/* applyModifier_DM */  NULL,
 	/* applyModifierEM_DM */NULL,
 
-	/* deformVerts */       NULL,
+	/* deformVerts */       deformVerts,
 	/* deformMatrices */    NULL,
 	/* deformVertsEM */     NULL,
 	/* deformMatricesEM */  NULL,
-- 
cgit v1.2.3