/* return 1: success */ static int mesh_separate_loose(wmOperator *op, Main *bmain, Scene *scene, Base *editbase) { Mesh *me; EditMesh *em; int doit= 1; me= editbase->object->data; em= BKE_mesh_get_editmesh(me); if(me->key) { error("Can't separate with vertex keys"); BKE_mesh_end_editmesh(me, em); return 0; } EM_clear_flag_all(em, SELECT); while(doit) { /* Select a random vert to start with */ EditVert *eve; int tot; /* check if all verts that are visible have been done */ for(eve=em->verts.first; eve; eve= eve->next) if(!eve->h) break; if(eve==NULL) break; /* only hidden verts left, quit early */ /* first non hidden vert */ eve->f |= SELECT; selectconnected_mesh_all(em); /* don't separate the very last part */ for(eve=em->verts.first; eve; eve= eve->next) if((eve->f & SELECT)==0) break; if(eve==NULL) break; tot= BLI_countlist(&em->verts); /* and now separate */ doit= mesh_separate_selected(op, bmain, scene, editbase); /* with hidden verts this can happen */ if(tot == BLI_countlist(&em->verts)) break; } BKE_mesh_end_editmesh(me, em); return 1; }
/* return 1: success */ static int mesh_separate_material(wmOperator *op, Main *bmain, Scene *scene, Base *editbase) { Mesh *me= editbase->object->data; EditMesh *em= BKE_mesh_get_editmesh(me); unsigned char curr_mat; for (curr_mat = 1; curr_mat < editbase->object->totcol; ++curr_mat) { /* clear selection, we're going to use that to select material group */ EM_clear_flag_all(em, SELECT); /* select the material */ EM_select_by_material(em, curr_mat); /* and now separate */ if(em->totfacesel > 0) { mesh_separate_selected(op, bmain, scene, editbase); } } BKE_mesh_end_editmesh(me, em); return 1; }
static void make_prim(Object *obedit, int type, float mat[4][4], int tot, int seg, int subdiv, float dia, float depth, int ext, int fill) { /* * type - for the type of shape * dia - the radius for cone,sphere cylinder etc. * depth - * ext - extrude * fill - end capping, and option to fill in circle * cent[3] - center of the data. * */ EditMesh *em= BKE_mesh_get_editmesh(((Mesh *)obedit->data)); EditVert *eve, *v1=NULL, *v2, *v3, *v4=NULL, *vtop, *vdown; float phi, phid, vec[3]; float q[4], cmat[3][3], nor[3]= {0.0, 0.0, 0.0}; short a, b; EM_clear_flag_all(em, SELECT); phid= 2.0f*(float)M_PI/tot; phi= .25f*(float)M_PI; switch(type) { case PRIM_GRID: /* grid */ /* clear flags */ eve= em->verts.first; while(eve) { eve->f= 0; eve= eve->next; } /* one segment first: the X axis */ phi = (2*dia)/(float)(tot-1); phid = (2*dia)/(float)(seg-1); for(a=tot-1;a>=0;a--) { vec[0] = (phi*a) - dia; vec[1]= - dia; vec[2]= 0.0f; eve= addvertlist(em, vec, NULL); eve->f= 1+2+4; if(a < tot -1) addedgelist(em, eve->prev, eve, NULL); } /* extrude and translate */ vec[0]= vec[2]= 0.0; vec[1]= phid; for(a=0;a<seg-1;a++) { extrudeflag_vert(obedit, em, 2, nor, 0); // nor unused translateflag(em, 2, vec); } /* and now do imat */ eve= em->verts.first; while(eve) { if(eve->f & SELECT) { mul_m4_v3(mat,eve->co); } eve= eve->next; } recalc_editnormals(em); break; case PRIM_UVSPHERE: /* UVsphere */ /* clear all flags */ eve= em->verts.first; while(eve) { eve->f= 0; eve= eve->next; } /* one segment first */ phi= 0; phid/=2; for(a=0; a<=tot; a++) { vec[0]= dia*sinf(phi); vec[1]= 0.0; vec[2]= dia*cosf(phi); eve= addvertlist(em, vec, NULL); eve->f= 1+2+4; if(a==0) v1= eve; else addedgelist(em, eve, eve->prev, NULL); phi+= phid; } /* extrude and rotate */ phi= M_PI/seg; q[0]= cos(phi); q[3]= sin(phi); q[1]=q[2]= 0; quat_to_mat3( cmat,q); for(a=0; a<seg; a++) { extrudeflag_vert(obedit, em, 2, nor, 0); // nor unused rotateflag(em, 2, v1->co, cmat); } removedoublesflag(em, 4, 0, 0.0001); /* and now do imat */ eve= em->verts.first; while(eve) { if(eve->f & SELECT) { mul_m4_v3(mat,eve->co); } eve= eve->next; } recalc_editnormals(em); break; case PRIM_ICOSPHERE: /* Icosphere */ { EditVert *eva[12]; EditEdge *eed; /* clear all flags */ eve= em->verts.first; while(eve) { eve->f= 0; eve= eve->next; } dia/=200; for(a=0;a<12;a++) { vec[0]= dia*icovert[a][0]; vec[1]= dia*icovert[a][1]; vec[2]= dia*icovert[a][2]; eva[a]= addvertlist(em, vec, NULL); eva[a]->f= 1+2; } for(a=0;a<20;a++) { EditFace *evtemp; v1= eva[ icoface[a][0] ]; v2= eva[ icoface[a][1] ]; v3= eva[ icoface[a][2] ]; evtemp = addfacelist(em, v1, v2, v3, 0, NULL, NULL); evtemp->e1->f = 1+2; evtemp->e2->f = 1+2; evtemp->e3->f = 1+2; } dia*=200; for(a=1; a<subdiv; a++) esubdivideflag(obedit, em, 2, dia, 0, B_SPHERE,1, SUBDIV_CORNER_PATH, 0); /* and now do imat */ eve= em->verts.first; while(eve) { if(eve->f & 2) { mul_m4_v3(mat,eve->co); } eve= eve->next; } // Clear the flag 2 from the edges for(eed=em->edges.first;eed;eed=eed->next){ if(eed->f & 2){ eed->f &= !2; } } } break; case PRIM_MONKEY: /* Monkey */ { //extern int monkeyo, monkeynv, monkeynf; //extern signed char monkeyf[][4]; //extern signed char monkeyv[][3]; EditVert **tv= MEM_mallocN(sizeof(*tv)*monkeynv*2, "tv"); int i; for (i=0; i<monkeynv; i++) { float v[3]; v[0]= (monkeyv[i][0]+127)/128.0, v[1]= monkeyv[i][1]/128.0, v[2]= monkeyv[i][2]/128.0; tv[i]= addvertlist(em, v, NULL); tv[i]->f |= SELECT; tv[monkeynv+i]= (fabs(v[0]= -v[0])<0.001)?tv[i]:addvertlist(em, v, NULL); tv[monkeynv+i]->f |= SELECT; } for (i=0; i<monkeynf; i++) { addfacelist(em, 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, NULL); addfacelist(em, 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, NULL); } MEM_freeN(tv); /* and now do imat */ for(eve= em->verts.first; eve; eve= eve->next) { if(eve->f & SELECT) { mul_m4_v3(mat,eve->co); } } recalc_editnormals(em); } break; default: /* all types except grid, sphere... */ if(type==PRIM_CONE); else if(ext==0) depth= 0.0f; /* first vertex at 0° for circular objects */ if( ELEM3(type, PRIM_CIRCLE,PRIM_CYLINDER,PRIM_CONE) ) phi = 0.0f; vtop= vdown= v1= v2= 0; for(b=0; b<=ext; b++) { for(a=0; a<tot; a++) { vec[0]= dia*sinf(phi); vec[1]= dia*cosf(phi); vec[2]= b?depth:-depth; mul_m4_v3(mat, vec); eve= addvertlist(em, vec, NULL); eve->f= SELECT; if(a==0) { if(b==0) v1= eve; else v2= eve; } phi+=phid; } } /* center vertices */ /* type PRIM_CONE can only have 1 one side filled * if the cone has no capping, dont add vtop */ if(type == PRIM_CONE || (fill && !ELEM(type, PRIM_PLANE, PRIM_CUBE))) { vec[0]= vec[1]= 0.0f; vec[2]= type==PRIM_CONE ? depth : -depth; mul_m4_v3(mat, vec); vdown= addvertlist(em, vec, NULL); if((ext || type==PRIM_CONE) && fill) { vec[0]= vec[1]= 0.0f; vec[2]= type==PRIM_CONE ? -depth : depth; mul_m4_v3(mat,vec); vtop= addvertlist(em, vec, NULL); } } else { vdown= v1; vtop= v2; } if(vtop) vtop->f= SELECT; if(vdown) vdown->f= SELECT; /* top and bottom face */ if(fill || type==PRIM_CONE) { if(tot==4 && ELEM(type, PRIM_PLANE, PRIM_CUBE)) { v3= v1->next->next; if(ext) v4= v2->next->next; addfacelist(em, v3, v1->next, v1, v3->next, NULL, NULL); if(ext) addfacelist(em, v2, v2->next, v4, v4->next, NULL, NULL); } else { v3= v1; v4= v2; for(a=1; a<tot; a++) { addfacelist(em, vdown, v3, v3->next, 0, NULL, NULL); v3= v3->next; if(ext && fill) { addfacelist(em, vtop, v4, v4->next, 0, NULL, NULL); v4= v4->next; } } if(!ELEM(type, PRIM_PLANE, PRIM_CUBE)) { addfacelist(em, vdown, v3, v1, 0, NULL, NULL); if(ext) addfacelist(em, vtop, v4, v2, 0, NULL, NULL); } } } else if(type==PRIM_CIRCLE) { /* we need edges for a circle */ v3= v1; for(a=1;a<tot;a++) { addedgelist(em, v3, v3->next, NULL); v3= v3->next; } addedgelist(em, v3, v1, NULL); } /* side faces */ if(ext) { v3= v1; v4= v2; for(a=1; a<tot; a++) { addfacelist(em, v3, v3->next, v4->next, v4, NULL, NULL); v3= v3->next; v4= v4->next; } addfacelist(em, v3, v1, v2, v4, NULL, NULL); } else if(fill && type==PRIM_CONE) { /* add the bottom flat area of the cone * if capping is disabled dont bother */ v3= v1; for(a=1; a<tot; a++) { addfacelist(em, vtop, v3->next, v3, 0, NULL, NULL); v3= v3->next; } addfacelist(em, vtop, v1, v3, 0, NULL, NULL); } } EM_stats_update(em); /* simple selection flush OK, based on fact it's a single model */ EM_select_flush(em); /* flushes vertex -> edge -> face selection */ if(!ELEM5(type, PRIM_GRID, PRIM_PLANE, PRIM_ICOSPHERE, PRIM_UVSPHERE, PRIM_MONKEY)) EM_recalc_normal_direction(em, FALSE, TRUE); /* otherwise monkey has eyes in wrong direction */ BKE_mesh_end_editmesh(obedit->data, em); }