[Bf-blender-cvs] [fd9b25d] master: cleanup: create cube, use index lookups

[Campbell Barton]

Commit: fd9b25df75d3c3fd8132798723ab6e68ff9c79f6
Author: Campbell Barton
Date:   Sun Jan 4 14:19:53 2015 +1100
Branches: master
https://developer.blender.org/rBfd9b25df75d3c3fd8132798723ab6e68ff9c79f6

cleanup: create cube, use index lookups

===================================================================

M	source/blender/bmesh/operators/bmo_primitive.c

===================================================================

diff --git a/source/blender/bmesh/operators/bmo_primitive.c b/source/blender/bmesh/operators/bmo_primitive.c
index e69dcca..2108a2c 100644
--- a/source/blender/bmesh/operators/bmo_primitive.c
+++ b/source/blender/bmesh/operators/bmo_primitive.c
@@ -662,78 +662,46 @@ void bmo_create_cone_exec(BMesh *bm, BMOperator *op)
 
 void bmo_create_cube_exec(BMesh *bm, BMOperator *op)
 {
-	BMVert *v1, *v2, *v3, *v4, *v5, *v6, *v7, *v8;
-	float vec[3], mat[4][4], off = BMO_slot_float_get(op->slots_in, "size") / 2.0f;
+	BMVert *verts[8];
+	float mat[4][4];
+	float off = BMO_slot_float_get(op->slots_in, "size") / 2.0f;
+	int i, x, y, z;
+	const char faces[6][4] = {
+		{1, 3, 2, 0},
+		{3, 7, 6, 2},
+		{7, 5, 4, 6},
+		{5, 1, 0, 4},
+		{0, 2, 6, 4},
+		{5, 7, 3, 1},
+	};
 
 	BMO_slot_mat4_get(op->slots_in, "matrix", mat);
 
 	if (!off) off = 0.5f;
+	i = 0;
 
-	vec[0] = -off;
-	vec[1] = -off;
-	vec[2] = -off;
-	mul_m4_v3(mat, vec);
-	v1 = BM_vert_create(bm, vec, NULL, BM_CREATE_NOP);
-	BMO_elem_flag_enable(bm, v1, VERT_MARK);
-
-	vec[0] = -off;
-	vec[1] = off;
-	vec[2] = -off;
-	mul_m4_v3(mat, vec);
-	v2 = BM_vert_create(bm, vec, NULL, BM_CREATE_NOP);
-	BMO_elem_flag_enable(bm, v2, VERT_MARK);
-
-	vec[0] = off;
-	vec[1] = off;
-	vec[2] = -off;
-	mul_m4_v3(mat, vec);
-	v3 = BM_vert_create(bm, vec, NULL, BM_CREATE_NOP);
-	BMO_elem_flag_enable(bm, v3, VERT_MARK);
-
-	vec[0] = off;
-	vec[1] = -off;
-	vec[2] = -off;
-	mul_m4_v3(mat, vec);
-	v4 = BM_vert_create(bm, vec, NULL, BM_CREATE_NOP);
-	BMO_elem_flag_enable(bm, v4, VERT_MARK);
-
-	vec[0] = -off;
-	vec[1] = -off;
-	vec[2] = off;
-	mul_m4_v3(mat, vec);
-	v5 = BM_vert_create(bm, vec, NULL, BM_CREATE_NOP);
-	BMO_elem_flag_enable(bm, v5, VERT_MARK);
-
-	vec[0] = -off;
-	vec[1] = off;
-	vec[2] = off;
-	mul_m4_v3(mat, vec);
-	v6 = BM_vert_create(bm, vec, NULL, BM_CREATE_NOP);
-	BMO_elem_flag_enable(bm, v6, VERT_MARK);
-
-	vec[0] = off;
-	vec[1] = off;
-	vec[2] = off;
-	mul_m4_v3(mat, vec);
-	v7 = BM_vert_create(bm, vec, NULL, BM_CREATE_NOP);
-	BMO_elem_flag_enable(bm, v7, VERT_MARK);
-
-	vec[0] = off;
-	vec[1] = -off;
-	vec[2] = off;
-	mul_m4_v3(mat, vec);
-	v8 = BM_vert_create(bm, vec, NULL, BM_CREATE_NOP);
-	BMO_elem_flag_enable(bm, v8, VERT_MARK);
-
-	/* the four sides */
-	BM_face_create_quad_tri(bm, v5, v6, v2, v1, NULL, BM_CREATE_NOP);
-	BM_face_create_quad_tri(bm, v6, v7, v3, v2, NULL, BM_CREATE_NOP);
-	BM_face_create_quad_tri(bm, v7, v8, v4, v3, NULL, BM_CREATE_NOP);
-	BM_face_create_quad_tri(bm, v8, v5, v1, v4, NULL, BM_CREATE_NOP);
-	
-	/* top/bottom */
-	BM_face_create_quad_tri(bm, v1, v2, v3, v4, NULL, BM_CREATE_NOP);
-	BM_face_create_quad_tri(bm, v8, v7, v6, v5, NULL, BM_CREATE_NOP);
+	for (x = -1; x < 2; x += 2) {
+		for (y = -1; y < 2; y += 2) {
+			for (z = -1; z < 2; z += 2) {
+				float vec[3] = {(float)x * off, (float)y * off, (float)z * off};
+				mul_m4_v3(mat, vec);
+				verts[i] = BM_vert_create(bm, vec, NULL, BM_CREATE_NOP);
+				BMO_elem_flag_enable(bm, verts[i], VERT_MARK);
+				i++;
+			}
+		}
+	}
+
+	for (i = 0; i < ARRAY_SIZE(faces); i++) {
+		BMVert *quad[4] = {
+		    verts[faces[i][0]],
+		    verts[faces[i][1]],
+		    verts[faces[i][2]],
+		    verts[faces[i][3]],
+		};
+
+		BM_face_create_verts(bm, quad, 4, NULL, BM_CREATE_NOP, true);
+	}
 
 	BMO_slot_buffer_from_enabled_flag(bm, op, op->slots_out, "verts.out", BM_VERT, VERT_MARK);
 }