From a070a5befa1110120547333d84c6e67cae53d648 Mon Sep 17 00:00:00 2001 From: Peter Lu <> Date: Sat, 24 Sep 2016 16:08:10 +0200 Subject: Mesh: added default UVs for Monkey, improved UVs for UV Sphere and Icosphere. Fixes T47488 and T47478. Reviewed By: brecht Differential Revision: https://developer.blender.org/D2224 --- source/blender/bmesh/intern/bmesh_opdefines.c | 3 +- source/blender/bmesh/operators/bmo_primitive.c | 666 +++++++++++++++++++++++-- 2 files changed, 631 insertions(+), 38 deletions(-) (limited to 'source/blender/bmesh') diff --git a/source/blender/bmesh/intern/bmesh_opdefines.c b/source/blender/bmesh/intern/bmesh_opdefines.c index 79c2f80d6aa..0d0fdda2c4c 100644 --- a/source/blender/bmesh/intern/bmesh_opdefines.c +++ b/source/blender/bmesh/intern/bmesh_opdefines.c @@ -1635,7 +1635,8 @@ static BMOpDefine bmo_create_icosphere_def = { static BMOpDefine bmo_create_monkey_def = { "create_monkey", /* slots_in */ - {{"matrix", BMO_OP_SLOT_MAT}, /* matrix to multiply the new geometry with */ + {{"matrix", BMO_OP_SLOT_MAT}, /* matrix to multiply the new geometry with */ + {"calc_uvs", BMO_OP_SLOT_BOOL}, /* calculate default UVs */ {{'\0'}}, }, /* slots_out */ diff --git a/source/blender/bmesh/operators/bmo_primitive.c b/source/blender/bmesh/operators/bmo_primitive.c index d2b9fa9efa3..992e89fe127 100644 --- a/source/blender/bmesh/operators/bmo_primitive.c +++ b/source/blender/bmesh/operators/bmo_primitive.c @@ -78,6 +78,31 @@ static const short icoface[20][3] = { {10, 9, 11} }; +static const float icouvs[60][2] = +{ + {0.818181f, 0.000000f}, {0.727272f, 0.157461f}, {0.909090f, 0.157461f}, + {0.727272f, 0.157461f}, {0.636363f, 0.000000f}, {0.545454f, 0.157461f}, + {0.090909f, 0.000000f}, {0.000000f, 0.157461f}, {0.181818f, 0.157461f}, + {0.272727f, 0.000000f}, {0.181818f, 0.157461f}, {0.363636f, 0.157461f}, + {0.454545f, 0.000000f}, {0.363636f, 0.157461f}, {0.545454f, 0.157461f}, + {0.727272f, 0.157461f}, {0.545454f, 0.157461f}, {0.636363f, 0.314921f}, + {0.909090f, 0.157461f}, {0.727272f, 0.157461f}, {0.818181f, 0.314921f}, + {0.181818f, 0.157461f}, {0.000000f, 0.157461f}, {0.090909f, 0.314921f}, + {0.363636f, 0.157461f}, {0.181818f, 0.157461f}, {0.272727f, 0.314921f}, + {0.545454f, 0.157461f}, {0.363636f, 0.157461f}, {0.454545f, 0.314921f}, + {0.727272f, 0.157461f}, {0.636363f, 0.314921f}, {0.818181f, 0.314921f}, + {0.909090f, 0.157461f}, {0.818181f, 0.314921f}, {1.000000f, 0.314921f}, + {0.181818f, 0.157461f}, {0.090909f, 0.314921f}, {0.272727f, 0.314921f}, + {0.363636f, 0.157461f}, {0.272727f, 0.314921f}, {0.454545f, 0.314921f}, + {0.545454f, 0.157461f}, {0.454545f, 0.314921f}, {0.636363f, 0.314921f}, + {0.818181f, 0.314921f}, {0.636363f, 0.314921f}, {0.727272f, 0.472382f}, + {1.000000f, 0.314921f}, {0.818181f, 0.314921f}, {0.909090f, 0.472382f}, + {0.272727f, 0.314921f}, {0.090909f, 0.314921f}, {0.181818f, 0.472382f}, + {0.454545f, 0.314921f}, {0.272727f, 0.314921f}, {0.363636f, 0.472382f}, + {0.636363f, 0.314921f}, {0.454545f, 0.314921f}, {0.545454f, 0.472382f} +}; + + static const int monkeyo = 4; static const int monkeynv = 271; static const int monkeynf = 250; @@ -218,6 +243,510 @@ static signed char monkeyf[250][4] = { {-68, -67, 24, -33}, }; +static const float monkeyuvs[] = +{ + 0.890955f, 0.590063f, 0.870622f, 0.589649f, 0.860081f, 0.560115f, 0.904571f, 0.559404f, + 0.856226f, 0.850547f, 0.868067f, 0.821510f, 0.888398f, 0.821999f, 0.900640f, 0.853232f, + 0.904571f, 0.559404f, 0.860081f, 0.560115f, 0.853018f, 0.521562f, 0.920166f, 0.524546f, + 0.847458f, 0.888748f, 0.856226f, 0.850547f, 0.900640f, 0.853232f, 0.914672f, 0.888748f, + 0.860081f, 0.560115f, 0.828900f, 0.590771f, 0.798481f, 0.569535f, 0.853018f, 0.521562f, + 0.795104f, 0.838402f, 0.826436f, 0.818537f, 0.856226f, 0.850547f, 0.847458f, 0.888748f, + 0.870622f, 0.589649f, 0.854402f, 0.604754f, 0.828900f, 0.590771f, 0.860081f, 0.560115f, + 0.826436f, 0.818537f, 0.852534f, 0.805700f, 0.868067f, 0.821510f, 0.856226f, 0.850547f, + 0.854402f, 0.604754f, 0.854107f, 0.625459f, 0.828171f, 0.633354f, 0.828900f, 0.590771f, + 0.827598f, 0.775964f, 0.853157f, 0.785002f, 0.852534f, 0.805700f, 0.826436f, 0.818537f, + 0.828900f, 0.590771f, 0.828171f, 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0.562595f, 0.092820f, 0.589862f, + 0.620420f, 0.565675f, 0.671403f, 0.592656f, 0.484068f, 0.628776f, 0.498072f, 0.552315f, + 0.276936f, 0.625067f, 0.092820f, 0.589862f, 0.145041f, 0.562595f, 0.264218f, 0.550140f, + 0.391039f, 0.611891f, 0.498072f, 0.552315f, 0.484068f, 0.628776f, 0.434803f, 0.658882f, + 0.276936f, 0.625067f, 0.264218f, 0.550140f, 0.369913f, 0.610196f, 0.325318f, 0.656224f +}; + #define VERT_MARK 1 #define EDGE_ORIG 1 @@ -496,6 +1025,8 @@ void bmo_create_icosphere_exec(BMesh *bm, BMOperator *op) BMO_vert_flag_enable(bm, eva[a], VERT_MARK); } + int uvi = 0; + const int cd_loop_uv_offset = CustomData_get_offset(&bm->ldata, CD_MLOOPUV); for (a = 0; a < 20; a++) { BMFace *eftemp; BMVert *v1, *v2, *v3; @@ -510,7 +1041,19 @@ void bmo_create_icosphere_exec(BMesh *bm, BMOperator *op) BMO_edge_flag_enable(bm, l->e, EDGE_MARK); } - BMO_face_flag_enable(bm, eftemp, FACE_MARK); + /* Set the UVs here, the iteration order of the faces is not guaranteed, + * so it's best to set the UVs right after the face is created. */ + if(calc_uvs) { + BMLoop* l; + BMIter liter2; + int loop_index; + BM_ITER_ELEM_INDEX (l, &liter2, eftemp, BM_LOOPS_OF_FACE, loop_index) { + MLoopUV *luv = BM_ELEM_CD_GET_VOID_P(l, cd_loop_uv_offset); + luv->uv[0] = icouvs[uvi][0]; + luv->uv[1] = icouvs[uvi][1]; + uvi++; + } + } } if (subdiv > 1) { @@ -530,29 +1073,7 @@ void bmo_create_icosphere_exec(BMesh *bm, BMOperator *op) BMO_op_finish(bm, &bmop); } - if (calc_uvs) { - BMFace *f; - BMIter fiter; - - /* We cannot tag faces for UVs computing above, so we have to do it now, based on all its vertices - * being tagged. */ - BM_ITER_MESH (f, &fiter, bm, BM_FACES_OF_MESH) { - bool valid = true; - - BM_ITER_ELEM (l, &liter, f, BM_LOOPS_OF_FACE) { - if (!BMO_vert_flag_test(bm, l->v, VERT_MARK)) { - valid = false; - break; - } - } - if (valid) { - BMO_face_flag_enable(bm, f, FACE_MARK); - } - } - - BM_mesh_calc_uvs_sphere(bm, FACE_MARK); - } /* must transform after because of sphere subdivision */ BM_ITER_MESH (v, &viter, bm, BM_VERTS_OF_MESH) { @@ -564,7 +1085,7 @@ void bmo_create_icosphere_exec(BMesh *bm, BMOperator *op) BMO_slot_buffer_from_enabled_flag(bm, op, op->slots_out, "verts.out", BM_VERT, VERT_MARK); } -static void bm_mesh_calc_uvs_sphere_face(BMFace *f, float mat_rot[3][3], const int cd_loop_uv_offset) +static void bm_mesh_calc_uvs_sphere_face(BMFace *f, const int cd_loop_uv_offset) { float *uvs[4]; BMLoop *l; @@ -574,12 +1095,42 @@ static void bm_mesh_calc_uvs_sphere_face(BMFace *f, float mat_rot[3][3], const i BLI_assert(f->len <= 4); + /* If face has 3 vertices, it's a polar face, in which case we need to + * compute a nearbye to determine its latitude. */ + float avgx = 0.0f, avgy = 0.0f; + BM_ITER_ELEM_INDEX (l, &iter, f, BM_LOOPS_OF_FACE, loop_index) { + if (f->len == 3) { + avgx += l->v->co[0]; + avgy += l->v->co[1]; + } + } + avgx /= 3.0f; + avgy /= 3.0f; + BM_ITER_ELEM_INDEX (l, &iter, f, BM_LOOPS_OF_FACE, loop_index) { MLoopUV *luv = BM_ELEM_CD_GET_VOID_P(l, cd_loop_uv_offset); - float vco[3]; + float x = l->v->co[0]; + float y = l->v->co[1]; + float z = l->v->co[2]; + float len = len_v3(l->v->co); + + /* Use neigboring point to compute angle for poles. */ + float theta; + if (f->len == 3 && fabsf(x) < 0.0001f && fabsf(y) < 0.0001f) { + theta = atan2f(avgy, avgx); + } + else { + theta = atan2f(y, x); + } - mul_v3_m3v3(vco, mat_rot, l->v->co); - map_to_sphere(&luv->uv[0], &luv->uv[1], vco[0], vco[1], vco[2]); + /* Shift borderline coordinates to the left. */ + if (fabsf(theta - M_PI) < 0.0001f) { + theta = -M_PI; + } + + float phi = saacos(z / len); + luv->uv[0] = 0.5f + theta / ((float)M_PI * 2); + luv->uv[1] = 1.0f - phi / (float)M_PI; uvs[loop_index] = luv->uv; } @@ -615,21 +1166,38 @@ void BM_mesh_calc_uvs_sphere(BMesh *bm, const short oflag) const int cd_loop_uv_offset = CustomData_get_offset(&bm->ldata, CD_MLOOPUV); - /* We apply a 'magic' rotationto vcos before mapping them to sphere, - * those values seem to give best results for both ico and uv sphere projections. */ - float mat_rot[3][3]; - const float axis[3] = {0.806f, 0.329f, 0.491f}; - const float angle = DEG2RADF(120.0f); + BLI_assert(cd_loop_uv_offset != -1); /* caller is responsible for giving us UVs */ - axis_angle_to_mat3(mat_rot, axis, angle); + BM_ITER_MESH (f, &iter, bm, BM_FACES_OF_MESH) { + if (!BMO_face_flag_test(bm, f, oflag)) + continue; - BLI_assert(cd_loop_uv_offset != -1); /* caller is responsible for giving us UVs */ + bm_mesh_calc_uvs_sphere_face(f, cd_loop_uv_offset); + } + + BMIter iter2; + BMLoop* l; + int loop_index; + float minx = 1.0f; BM_ITER_MESH (f, &iter, bm, BM_FACES_OF_MESH) { if (!BMO_face_flag_test(bm, f, oflag)) continue; + BM_ITER_ELEM_INDEX (l, &iter2, f, BM_LOOPS_OF_FACE, loop_index) { + MLoopUV *luv = BM_ELEM_CD_GET_VOID_P(l, cd_loop_uv_offset); + if (luv->uv[0] < minx) { + minx = luv->uv[0]; + } + } + } - bm_mesh_calc_uvs_sphere_face(f, mat_rot, cd_loop_uv_offset); + BM_ITER_MESH (f, &iter, bm, BM_FACES_OF_MESH) { + if (!BMO_face_flag_test(bm, f, oflag)) + continue; + BM_ITER_ELEM_INDEX (l, &iter2, f, BM_LOOPS_OF_FACE, loop_index) { + MLoopUV *luv = BM_ELEM_CD_GET_VOID_P(l, cd_loop_uv_offset); + luv->uv[0] -= minx; + } } } @@ -640,6 +1208,7 @@ void bmo_create_monkey_exec(BMesh *bm, BMOperator *op) int i; BMO_slot_mat4_get(op->slots_in, "matrix", mat); + const bool calc_uvs = BMO_slot_bool_get(op->slots_in, "calc_uvs"); for (i = 0; i < monkeynv; i++) { float v[3]; @@ -666,20 +1235,43 @@ void bmo_create_monkey_exec(BMesh *bm, BMOperator *op) mul_m4_v3(mat, tv[i]->co); } + int uvi = 0; + const int cd_loop_uv_offset = CustomData_get_offset(&bm->ldata, CD_MLOOPUV); for (i = 0; i < monkeynf; i++) { - BM_face_create_quad_tri(bm, + BMFace* temp1 = BM_face_create_quad_tri(bm, tv[monkeyf[i][0] + i - monkeyo], tv[monkeyf[i][1] + i - monkeyo], tv[monkeyf[i][2] + i - monkeyo], (monkeyf[i][3] != monkeyf[i][2]) ? tv[monkeyf[i][3] + i - monkeyo] : NULL, NULL, BM_CREATE_NOP); - BM_face_create_quad_tri(bm, + BMFace* temp2 = BM_face_create_quad_tri(bm, tv[monkeynv + monkeyf[i][2] + i - monkeyo], tv[monkeynv + monkeyf[i][1] + i - monkeyo], tv[monkeynv + monkeyf[i][0] + i - monkeyo], (monkeyf[i][3] != monkeyf[i][2]) ? tv[monkeynv + monkeyf[i][3] + i - monkeyo] : NULL, NULL, BM_CREATE_NOP); + + /* Set the UVs here, the iteration order of the faces is not guaranteed, + * so it's best to set the UVs right after the face is created. */ + if(calc_uvs) { + BMLoop* l; + BMIter liter; + int loop_index; + BM_ITER_ELEM_INDEX (l, &liter, temp1, BM_LOOPS_OF_FACE, loop_index) { + MLoopUV *luv = BM_ELEM_CD_GET_VOID_P(l, cd_loop_uv_offset); + luv->uv[0] = monkeyuvs[uvi*2 + 0]; + luv->uv[1] = monkeyuvs[uvi*2 + 1]; + uvi++; + } + BM_ITER_ELEM_INDEX (l, &liter, temp2, BM_LOOPS_OF_FACE, loop_index) { + MLoopUV *luv = BM_ELEM_CD_GET_VOID_P(l, cd_loop_uv_offset); + luv->uv[0] = monkeyuvs[uvi*2 + 0]; + luv->uv[1] = monkeyuvs[uvi*2 + 1]; + uvi++; + } + + } } MEM_freeN(tv); -- cgit v1.2.3