minor speedup for scanfill, dont calculate the normal if its already known - use for editmode ngon filling.

source/blender/blenkernel/intern/editderivedmesh.c

@@ -218,7 +218,7 @@ static void BMEdit_RecalcTessellation_intern(BMEditMesh *tm)
 			/*complete the loop*/
 			BLI_addfilledge(&sf_ctx, firstv, v);
 
-			totfilltri = BLI_edgefill(&sf_ctx, FALSE);
+			totfilltri = BLI_edgefill_ex(&sf_ctx, FALSE, f->no);
 			BLI_array_growitems(looptris, totfilltri);
 
 			for (efa = sf_ctx.fillfacebase.first; efa; efa=efa->next) {

source/blender/blenlib/BLI_scanfill.h

@@ -100,6 +100,8 @@ struct ScanFillEdge *BLI_addfilledge(ScanFillContext *sf_ctx, struct ScanFillVer
 
 int BLI_begin_edgefill(ScanFillContext *sf_ctx);
 int BLI_edgefill(ScanFillContext *sf_ctx, const short do_quad_tri_speedup);
+int BLI_edgefill_ex(ScanFillContext *sf_ctx, const short do_quad_tri_speedup,
+                    const float nor_proj[3]);
 void BLI_end_edgefill(ScanFillContext *sf_ctx);
 
 /* These callbacks are needed to make the lib finction properly */

source/blender/blenlib/intern/scanfill.c

@@ -773,6 +773,11 @@ int BLI_begin_edgefill(ScanFillContext *sf_ctx)
 }
 
 int BLI_edgefill(ScanFillContext *sf_ctx, const short do_quad_tri_speedup)
+{
+	return BLI_edgefill_ex(sf_ctx, do_quad_tri_speedup, NULL);
+}
+
+int BLI_edgefill_ex(ScanFillContext *sf_ctx, const short do_quad_tri_speedup, const float nor_proj[3])
 {
 	/*
 	 * - fill works with its own lists, so create that first (no faces!)
@@ -852,21 +857,28 @@ int BLI_edgefill(ScanFillContext *sf_ctx, const short do_quad_tri_speedup)
 		return 0;
 	}
 	else {
-		/* define projection: with 'best' normal */
+		float n[3];
-		/* Newell's Method */
-		/* Similar code used elsewhere, but this checks for double ups
-		 * which historically this function supports so better not change */
-		float *v_prev;
-		float n[3] = {0.0f};
 
-		eve = sf_ctx->fillvertbase.last;
+		if (nor_proj) {
-		v_prev = eve->co;
+			copy_v3_v3(n, nor_proj);
+		}
+		else {
+			/* define projection: with 'best' normal */
+			/* Newell's Method */
+			/* Similar code used elsewhere, but this checks for double ups
+			 * which historically this function supports so better not change */
+			float *v_prev;
 
-		for (eve = sf_ctx->fillvertbase.first; eve; eve = eve->next) {
+			zero_v3(n);
-			if (LIKELY(!compare_v3v3(v_prev, eve->co, COMPLIMIT))) {
+			eve = sf_ctx->fillvertbase.last;
-				add_newell_cross_v3_v3v3(n, v_prev, eve->co);
-			}
 			v_prev = eve->co;
+
+			for (eve = sf_ctx->fillvertbase.first; eve; eve = eve->next) {
+				if (LIKELY(!compare_v3v3(v_prev, eve->co, COMPLIMIT))) {
+					add_newell_cross_v3_v3v3(n, v_prev, eve->co);
+				}
+				v_prev = eve->co;
+			}
 		}
 
 		if (UNLIKELY(normalize_v3(n) == 0.0f)) {

source/blender/bmesh/intern/bmesh_polygon.c

@@ -529,8 +529,8 @@ static int linecrossesf(const float v1[2], const float v2[2], const float v3[2],
 	GETMIN2(v1, v2, mv1, mv2);
 	GETMIN2(v3, v4, mv3, mv4);
 	
-	/* do an interval test on the x and y axe */
+	/* do an interval test on the x and y axes */
-	/* first do x axi */
+	/* first do x axis */
 	if (ABS(v1[1] - v2[1]) < EPS &&
 	    ABS(v3[1] - v4[1]) < EPS &&
 	    ABS(v1[1] - v3[1]) < EPS)
@@ -538,7 +538,7 @@ static int linecrossesf(const float v1[2], const float v2[2], const float v3[2],
 		return (mv4[0] >= mv1[0] && mv3[0] <= mv2[0]);
 	}
 
-	/* now do y axi */
+	/* now do y axis */
 	if (ABS(v1[0] - v2[0]) < EPS &&
 	    ABS(v3[0] - v4[0]) < EPS &&
 	    ABS(v1[0] - v3[0]) < EPS)

source/blender/editors/uvedit/uvedit_unwrap_ops.c

@@ -288,7 +288,7 @@ static ParamHandle *construct_param_handle(Scene *scene, BMEditMesh *em,
 
 			BLI_addfilledge(&sf_ctx, firstv, v);
 
-			BLI_edgefill(&sf_ctx, TRUE);
+			BLI_edgefill_ex(&sf_ctx, TRUE, efa->no);
 			for (sefa = sf_ctx.fillfacebase.first; sefa; sefa = sefa->next) {
 				ls[0] = sefa->v1->tmp.p;
 				ls[1] = sefa->v2->tmp.p;

source/blender/windowmanager/intern/wm_gesture.c

@@ -253,8 +253,9 @@ static void draw_filled_lasso(wmGesture *gt)
 	
 	/* highly unlikely this will fail, but could crash if (gt->points == 0) */
 	if (firstv) {
+		float zvec[3] = {0.0f, 0.0f, 1.0f};
 		BLI_addfilledge(&sf_ctx, firstv, v);
-		BLI_edgefill(&sf_ctx, FALSE);
+		BLI_edgefill_ex(&sf_ctx, FALSE, zvec);
 	
 		glEnable(GL_BLEND);
 		glColor4f(1.0, 1.0, 1.0, 0.05);