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Diffstat (limited to 'source/blender/src/editmesh_loop.c')
| -rw-r--r-- | source/blender/src/editmesh_loop.c | 954 |
1 files changed, 0 insertions, 954 deletions
diff --git a/source/blender/src/editmesh_loop.c b/source/blender/src/editmesh_loop.c deleted file mode 100644 index c44a0607464..00000000000 --- a/source/blender/src/editmesh_loop.c +++ /dev/null @@ -1,954 +0,0 @@ -/** - * $Id: - * - * ***** BEGIN GPL/BL DUAL LICENSE BLOCK ***** - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. The Blender - * Foundation also sells licenses for use in proprietary software under - * the Blender License. See http://www.blender.org/BL/ for information - * about this. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software Foundation, - * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - * - * The Original Code is Copyright (C) 2004 by NaN Holding BV. - * All rights reserved. - * - * The Original Code is: all of this file. - * - * Contributor(s): none yet. - * - * ***** END GPL/BL DUAL LICENSE BLOCK ***** - */ - -/* - -editmesh_loop: tools with own drawing subloops, select, knife, subdiv - -*/ - -#include <stdlib.h> -#include <string.h> -#include <math.h> - -#include "MEM_guardedalloc.h" - - -#include "DNA_mesh_types.h" -#include "DNA_meshdata_types.h" -#include "DNA_object_types.h" -#include "DNA_scene_types.h" -#include "DNA_screen_types.h" -#include "DNA_view3d_types.h" - -#include "BLI_blenlib.h" -#include "BLI_arithb.h" -#include "BLI_editVert.h" -#include "BLI_ghash.h" - -#include "BKE_depsgraph.h" -#include "BKE_displist.h" -#include "BKE_global.h" -#include "BKE_library.h" -#include "BKE_mesh.h" -#include "BKE_object.h" -#include "BKE_utildefines.h" - -#ifdef WITH_VERSE -#include "BKE_verse.h" -#endif - -#include "BIF_cursors.h" -#include "BIF_editmesh.h" -#include "BIF_gl.h" -#include "BIF_glutil.h" -#include "BIF_graphics.h" -#include "BIF_interface.h" -#include "BIF_mywindow.h" -#include "BIF_screen.h" -#include "BIF_space.h" -#include "BIF_toolbox.h" - -#ifdef WITH_VERSE -#include "BIF_verse.h" -#endif - -#include "BSE_view.h" -#include "BSE_edit.h" -#include "BSE_drawview.h" - -#include "BDR_drawobject.h" -#include "BDR_editobject.h" -#include "PIL_time.h" - -#include "mydevice.h" -#include "blendef.h" - -#include "editmesh.h" - -/* next 2 includes for knife tool... shouldnt be! (ton) */ -#include "GHOST_C-api.h" -#include "winlay.h" - - -/* New LoopCut */ -static void edgering_sel(EditEdge *startedge, int select, int previewlines) -{ - EditMesh *em = G.editMesh; - EditEdge *eed; - EditFace *efa; - EditVert *v[2][2]; - float co[2][3]; - int looking= 1,i; - - /* in eed->f1 we put the valence (amount of faces in edge) */ - /* in eed->f2 we put tagged flag as correct loop */ - /* in efa->f1 we put tagged flag as correct to select */ - - for(eed= em->edges.first; eed; eed= eed->next) { - eed->f1= 0; - eed->f2= 0; - } - for(efa= em->faces.first; efa; efa= efa->next) { - efa->f1= 0; - if(efa->h==0) { - efa->e1->f1++; - efa->e2->f1++; - efa->e3->f1++; - if(efa->e4) efa->e4->f1++; - } - } - - // tag startedge OK - startedge->f2= 1; - - while(looking) { - looking= 0; - - for(efa= em->faces.first; efa; efa= efa->next) { - if(efa->e4 && efa->f1==0 && efa->h == 0) { // not done quad - if(efa->e1->f1<=2 && efa->e2->f1<=2 && efa->e3->f1<=2 && efa->e4->f1<=2) { // valence ok - - // if edge tagged, select opposing edge and mark face ok - if(efa->e1->f2) { - efa->e3->f2= 1; - efa->f1= 1; - looking= 1; - } - else if(efa->e2->f2) { - efa->e4->f2= 1; - efa->f1= 1; - looking= 1; - } - if(efa->e3->f2) { - efa->e1->f2= 1; - efa->f1= 1; - looking= 1; - } - if(efa->e4->f2) { - efa->e2->f2= 1; - efa->f1= 1; - looking= 1; - } - } - } - } - } - - if(previewlines > 0 && select == 0){ - persp(PERSP_VIEW); - glPushMatrix(); - mymultmatrix(G.obedit->obmat); - //glColor3ub(0, 255, 255); - //glBegin(GL_LINES); - //glVertex3f(nearest->v1->co[0],nearest->v1->co[1],nearest->v1->co[2]); - //glVertex3f(nearest->v2->co[0],nearest->v2->co[1],nearest->v2->co[2]); - //glEnd(); - for(efa= em->faces.first; efa; efa= efa->next) { - if(efa->v4 == NULL) { continue; } - if(efa->h == 0){ - if(efa->e1->f2 == 1){ - if(efa->e1->h == 1 || efa->e3->h == 1 ) - continue; - - v[0][0] = efa->v1; - v[0][1] = efa->v2; - v[1][0] = efa->v4; - v[1][1] = efa->v3; - } else if(efa->e2->f2 == 1){ - if(efa->e2->h == 1 || efa->e4->h == 1) - continue; - v[0][0] = efa->v2; - v[0][1] = efa->v3; - v[1][0] = efa->v1; - v[1][1] = efa->v4; - } else { continue; } - - for(i=1;i<=previewlines;i++){ - co[0][0] = (v[0][1]->co[0] - v[0][0]->co[0])*(i/((float)previewlines+1))+v[0][0]->co[0]; - co[0][1] = (v[0][1]->co[1] - v[0][0]->co[1])*(i/((float)previewlines+1))+v[0][0]->co[1]; - co[0][2] = (v[0][1]->co[2] - v[0][0]->co[2])*(i/((float)previewlines+1))+v[0][0]->co[2]; - - co[1][0] = (v[1][1]->co[0] - v[1][0]->co[0])*(i/((float)previewlines+1))+v[1][0]->co[0]; - co[1][1] = (v[1][1]->co[1] - v[1][0]->co[1])*(i/((float)previewlines+1))+v[1][0]->co[1]; - co[1][2] = (v[1][1]->co[2] - v[1][0]->co[2])*(i/((float)previewlines+1))+v[1][0]->co[2]; - glColor3ub(255, 0, 255); - glBegin(GL_LINES); - glVertex3f(co[0][0],co[0][1],co[0][2]); - glVertex3f(co[1][0],co[1][1],co[1][2]); - glEnd(); - } - } - } - glPopMatrix(); - } else { - - /* (de)select the edges */ - for(eed= em->edges.first; eed; eed= eed->next) { - if(eed->f2) EM_select_edge(eed, select); - } - } -} -void CutEdgeloop(int numcuts) -{ - EditMesh *em = G.editMesh; - EditEdge *nearest=NULL, *eed; - float fac; - int keys = 0, holdnum=0, selectmode, dist; - short mvalo[2] = {0,0}, mval[2]; - short event, val, choosing=1, cancel=0, cuthalf = 0, smooth=0; - short hasHidden = 0; - char msg[128]; - - selectmode = G.scene->selectmode; - - if(G.scene->selectmode & SCE_SELECT_FACE){ - G.scene->selectmode = SCE_SELECT_EDGE; - EM_selectmode_set(); - } - - - BIF_undo_push("Loopcut Begin"); - while(choosing && !cancel){ - getmouseco_areawin(mval); - if (mval[0] != mvalo[0] || mval[1] != mvalo[1]) { - mvalo[0] = mval[0]; - mvalo[1] = mval[1]; - dist= 50; - nearest = findnearestedge(&dist); // returns actual distance in dist - scrarea_do_windraw(curarea); // after findnearestedge, backbuf! - - sprintf(msg,"Number of Cuts: %d",numcuts); - if(smooth){ - sprintf(msg,"%s (S)mooth: on",msg); - } else { - sprintf(msg,"%s (S)mooth: off",msg); - } - - headerprint(msg); - /* Need to figure preview */ - if(nearest){ - edgering_sel(nearest, 0, numcuts); - } - screen_swapbuffers(); - - /* backbuffer refresh for non-apples (no aux) */ -#ifndef __APPLE__ - if(G.vd->drawtype>OB_WIRE && (G.vd->flag & V3D_ZBUF_SELECT)) { - backdrawview3d(0); - } -#endif - } - else PIL_sleep_ms(10); // idle - - - while(qtest()) - { - val=0; - event= extern_qread(&val); - if(val && (event == MOUSEX || event == MOUSEY)){ ; } - else if(val && ((event==LEFTMOUSE || event==RETKEY) || (event == MIDDLEMOUSE || event==PADENTER))) - { - if(event == MIDDLEMOUSE){ - cuthalf = 1; - } - if (nearest==NULL) - cancel = 1; - choosing=0; - mvalo[0] = -1; - } - else if(val && (event==ESCKEY || event==RIGHTMOUSE )) - { - choosing=0; - cancel = 1; - mvalo[0] = -1; - } - else if(val && (event==PADPLUSKEY || event==WHEELUPMOUSE)) - { - numcuts++; - mvalo[0] = -1; - } - else if(val && (event==PADMINUS || event==WHEELDOWNMOUSE)) - { - if(numcuts > 1){ - numcuts--; - mvalo[0] = -1; - } - } - else if(val && event==SKEY) - { - if(smooth){smooth=0;} - else { smooth=1; } - mvalo[0] = -1; - } - - else if(val){ - holdnum = -1; - switch(event){ - case PAD9: - case NINEKEY: - holdnum = 9; break; - case PAD8: - case EIGHTKEY: - holdnum = 8;break; - case PAD7: - case SEVENKEY: - holdnum = 7;break; - case PAD6: - case SIXKEY: - holdnum = 6;break; - case PAD5: - case FIVEKEY: - holdnum = 5;break; - case PAD4: - case FOURKEY: - holdnum = 4;break; - case PAD3: - case THREEKEY: - holdnum = 3; break; - case PAD2: - case TWOKEY: - holdnum = 2;break; - case PAD1: - case ONEKEY: - holdnum = 1; break; - case PAD0: - case ZEROKEY: - holdnum = 0;break; - case BACKSPACEKEY: - holdnum = -2;break; - } - if(holdnum >= 0 && numcuts*10 < 130){ - if(keys == 0){ // first level numeric entry - if(holdnum > 0){ - numcuts = holdnum; - keys++; - } - } else if(keys > 0){//highrt level numeric entry - numcuts *= 10; - numcuts += holdnum; - keys++; - } - } else if (holdnum == -2){// backspace - if (keys > 1){ - numcuts /= 10; - keys--; - } else { - numcuts=1; - keys = 0; - } - } - mvalo[0] = -1; - break; - } // End Numeric Entry - } //End while(qtest()) - } // End Choosing - scrarea_queue_winredraw(curarea); - - if(cancel){ - return; - } - /* clean selection */ - for(eed=em->edges.first; eed; eed = eed->next){ - EM_select_edge(eed,0); - } - /* select edge ring */ - edgering_sel(nearest, 1, 0); - - /* now cut the loops */ - if(smooth){ - fac= 1.0f; - if(fbutton(&fac, 0.0f, 5.0f, 10, 10, "Smooth:")==0) return; - fac= 0.292f*fac; - esubdivideflag(SELECT,fac,B_SMOOTH,numcuts,SUBDIV_SELECT_LOOPCUT); - } else { - esubdivideflag(SELECT,0,0,numcuts,SUBDIV_SELECT_LOOPCUT); - } - /* if this was a single cut, enter edgeslide mode */ - if(numcuts == 1 && hasHidden == 0){ - if(cuthalf) - EdgeSlide(1,0.0); - else { - if(EdgeSlide(0,0.0) == -1){ - BIF_undo(); - } - } - } - - if(G.scene->selectmode != selectmode){ - G.scene->selectmode = selectmode; - EM_selectmode_set(); - } - - DAG_object_flush_update(G.scene, G.obedit, OB_RECALC_DATA); -#ifdef WITH_VERSE - if(G.editMesh->vnode) - sync_all_verseverts_with_editverts((VNode*)G.editMesh->vnode); -#endif - scrarea_queue_headredraw(curarea); - scrarea_queue_winredraw(curarea); - return; -} - - -/* *************** LOOP SELECT ************* */ -#if 0 -static short edgeFaces(EditEdge *e) -{ - EditMesh *em = G.editMesh; - EditFace *search=NULL; - short count = 0; - - search = em->faces.first; - while(search){ - if((search->e1 == e || search->e2 == e) || (search->e3 == e || search->e4 == e)) - count++; - search = search->next; - } - return count; -} -#endif - -/* this utility function checks to see if 2 edit edges share a face, - returns 1 if they do - returns 0 if they do not, or if the function is passed the same edge 2 times -*/ -short sharesFace(EditEdge* e1, EditEdge* e2) -{ - EditMesh *em = G.editMesh; - EditFace *search=NULL; - - search = em->faces.first; - if (e1 == e2){ - return 0 ; - } - while(search){ - if( - ((search->e1 == e1 || search->e2 == e1) || (search->e3 == e1 || search->e4 == e1)) && - ((search->e1 == e2 || search->e2 == e2) || (search->e3 == e2 || search->e4 == e2)) - ) { - return 1; - } - search = search->next; - } - return 0; -} - - -/* ***************** TRAIL ************************ - -Read a trail of mouse coords and return them as an array of CutCurve structs -len returns number of mouse coords read before commiting with RETKEY -It is up to the caller to free the block when done with it, - -XXX Is only used here, so local inside this file (ton) - */ - -#define TRAIL_POLYLINE 1 /* For future use, They don't do anything yet */ -#define TRAIL_FREEHAND 2 -#define TRAIL_MIXED 3 /* (1|2) */ -#define TRAIL_AUTO 4 -#define TRAIL_MIDPOINTS 8 - -typedef struct CutCurve { - float x; - float y; -} CutCurve; - -static CutCurve *get_mouse_trail(int *len, char mode, char cutmode, struct GHash *gh) -{ - CutCurve *curve,*temp; - EditVert *snapvert; - float *scr, mval[2], lastx=0, lasty=0; - int i=0, j, blocks=1, lasti=0; - int dist, tolerance; - short event, val, qual, vsnap=0, ldown=0, restart=0, rubberband=0; - short mval1[2], lockaxis=0, lockx=0, locky=0, oldmode; - - *len=0; - tolerance = 75; - - curve=(CutCurve *)MEM_callocN(1024*sizeof(CutCurve), "MouseTrail"); - - if (!curve) { - printf("failed to allocate memory in get_mouse_trail()\n"); - return(NULL); - } - mywinset(curarea->win); - - - if(cutmode != KNIFE_MULTICUT){ - /*redraw backbuffer if in zbuffered selection mode but not vertex selection*/ - if(G.vd->drawtype>OB_WIRE && (G.vd->flag & V3D_ZBUF_SELECT)) { - oldmode = G.scene->selectmode; - G.scene->selectmode = SCE_SELECT_VERTEX; - backdrawview3d(0); - G.scene->selectmode = oldmode; - } - glDrawBuffer(GL_FRONT); - headerprint("(LMB) draw, (Ctrl held while drawing) snap to vertex, (MMB) constrain to x/y screen axis, (Enter) cut " - "(with Ctrl to select cut line), (Esc) cancel"); - } - else{ - glDrawBuffer(GL_FRONT); - headerprint("(LMB) draw, (MMB) constrain to x/y screen axis, (Enter) cut (with Ctrl to select cut line), (Esc) cancel"); - } - - persp(PERSP_WIN); - - glColor3ub(255, 0, 255); - - while(TRUE) { - - event=extern_qread(&val); /* Enter or RMB indicates finish */ - if(val) { - if(event==RETKEY || event==PADENTER) break; - } - - if( event==ESCKEY || event==RIGHTMOUSE ) { - if (curve) MEM_freeN(curve); - *len=0; - bglFlush(); - glDrawBuffer(GL_BACK); - return(NULL); - break; - } - - if (rubberband) { /* rubberband mode, undraw last rubberband */ - glLineWidth(2.0); - sdrawXORline((int)curve[i-1].x, (int)curve[i-1].y,(int)mval[0],(int) mval[1]); - glLineWidth(1.0); - glFlush(); - rubberband=0; - } - - /*handle vsnap*/ - vsnap = 0; - if(cutmode != KNIFE_MULTICUT){ - qual = get_qual(); - if(qual & LR_CTRLKEY) vsnap = 1; - } - - if(vsnap){ - persp(PERSP_VIEW); - dist = tolerance; - snapvert = findnearestvert(&dist, SELECT, 0); - glColor3ub(255, 0, 255); - glDrawBuffer(GL_FRONT); - persp(PERSP_WIN); - if(snapvert && (dist < tolerance)){ - scr = BLI_ghash_lookup(gh, snapvert); - mval[0] = scr[0]; - mval[1] = scr[1]; - } - else{ - getmouseco_areawin(mval1); - mval[0] = (float)mval1[0]; - mval[1] = (float)mval1[1]; - } - } - - else{ - getmouseco_areawin(mval1); - mval[0] = (float)mval1[0]; - mval[1] = (float)mval1[1]; - } - - - if (lockaxis==1) mval[1]=locky; - if (lockaxis==2) mval[0]=lockx; - - if ( ((i==0) || (mval[0]!=curve[i-1].x) || (mval[1]!=curve[i-1].y)) - && (get_mbut() & L_MOUSE) ){ /* record changes only, if LMB down */ - - lastx=curve[i].x=mval[0]; - lasty=curve[i].y=mval[1]; - - lockaxis=0; - - i++; - - ldown=1; - if (restart) { - for(j=1;j<i;j++) sdrawXORline((int)curve[j-1].x, (int)curve[j-1].y, (int)curve[j].x, (int)curve[j].y); - if (rubberband) sdrawXORline((int)curve[j].x, (int)curve[j].y, (int)mval[0], (int)mval[1]); - glFlush(); - rubberband=0; - lasti=i=0; - restart=0; - ldown=0; - } - } - - if ((event==MIDDLEMOUSE)&&(get_mbut()&M_MOUSE)&&(i)){/*MMB Down*/ - /*determine which axis to lock to, or clear if locked */ - if (lockaxis) lockaxis=0; - else if (abs(curve[i-1].x-mval[0]) > abs(curve[i-1].y-mval[1])) lockaxis=1; - else lockaxis=2; - - if (lockaxis) { - lockx=lastx; - locky=lasty; - } - } - - if ((i>1)&&(i!=lasti)) { /*Draw recorded part of curve */ - sdrawline((int)curve[i-2].x, (int)curve[i-2].y, (int)curve[i-1].x, (int)curve[i-1].y); - glFlush(); - } - - if ((i==lasti)&&(i>0)) { /*Draw rubberband */ - glLineWidth(2.0); - sdrawXORline((int)curve[i-1].x, (int)curve[i-1].y,(int)mval[0], (int)mval[1]); - glLineWidth(1.0); - glFlush(); - rubberband=1; - } - lasti=i; - - if (i>=blocks*1024) { /* reallocate data if out of room */ - temp=curve; - curve=(CutCurve *)MEM_callocN((blocks+1)*1024*sizeof(CutCurve), "MouseTrail"); - if (!curve) { - printf("failed to re-allocate memory in get_mouse_trail()\n"); - return(NULL); - } - memcpy(curve, temp, blocks*1024*sizeof(CutCurve)); - blocks++; - MEM_freeN(temp); - } - } - - bglFlush(); - glDrawBuffer(GL_BACK); - persp(PERSP_VIEW); - - *len=i; - - return(curve); -} - - - - -/* ******************************************************************** */ -/* Knife Subdivide Tool. Subdivides edges intersected by a mouse trail - drawn by user. - - Currently mapped to KKey when in MeshEdit mode. - Usage: - Hit Shift K, Select Centers or Exact - Hold LMB down to draw path, hit RETKEY. - ESC cancels as expected. - - Contributed by Robert Wenzlaff (Det. Thorn). -*/ - -/* prototype */ -static float seg_intersect(struct EditEdge * e, CutCurve *c, int len, char mode, struct GHash *gh); - -void KnifeSubdivide(char mode) -{ - EditMesh *em = G.editMesh; - EditEdge *eed; - EditVert *eve; - CutCurve *curve; - Window *win; - - struct GHash *gh; - int oldcursor, len=0; - float isect=0.0; - short numcuts=1; - float *scr, co[4]; - - if (G.obedit==0) return; - - if (EM_nvertices_selected() < 2) { - error("No edges are selected to operate on"); - return; - } - - if (mode==KNIFE_PROMPT) { - short val= pupmenu("Cut Type %t|Exact Line%x1|Midpoints%x2|Multicut%x3"); - if(val<1) return; - mode = val; // warning, mode is char, pupmenu returns -1 with ESC - } - - if(mode == KNIFE_MULTICUT) { - if(button(&numcuts, 2, 128, "Number of Cuts:")==0) return; - } - - /* Set a knife cursor here */ - oldcursor=get_cursor(); - - win=winlay_get_active_window(); - - SetBlenderCursor(BC_KNIFECURSOR); - - for(eed=em->edges.first; eed; eed= eed->next) eed->tmp.fp = 0.0; /*store percentage of edge cut for KNIFE_EXACT here.*/ - - /*the floating point coordinates of verts in screen space will be stored in a hash table according to the vertices pointer*/ - gh = BLI_ghash_new(BLI_ghashutil_ptrhash, BLI_ghashutil_ptrcmp); - for(eve=em->verts.first; eve; eve=eve->next){ - scr = MEM_mallocN(sizeof(float)*2, "Vertex Screen Coordinates"); - VECCOPY(co, eve->co); - co[3]= 1.0; - Mat4MulVec4fl(G.obedit->obmat, co); - project_float(co,scr); - BLI_ghash_insert(gh, eve, scr); - eve->f1 = 0; /*store vertex intersection flag here*/ - - } - - curve=get_mouse_trail(&len, TRAIL_MIXED, mode, gh); - - if (curve && len && mode){ - eed= em->edges.first; - while(eed) { - if( eed->v1->f & eed->v2->f & SELECT ){ // NOTE: uses vertex select, subdiv doesnt do edges yet - isect=seg_intersect(eed, curve, len, mode, gh); - if (isect) eed->f2= 1; - else eed->f2=0; - eed->tmp.fp= isect; - //printf("isect=%i\n", isect); - } - else { - eed->f2=0; - eed->f1=0; - } - eed= eed->next; - } - - if (mode==KNIFE_EXACT) esubdivideflag(1, 0, B_KNIFE|B_PERCENTSUBD,1,SUBDIV_SELECT_ORIG); - else if (mode==KNIFE_MIDPOINT) esubdivideflag(1, 0, B_KNIFE,1,SUBDIV_SELECT_ORIG); - else if (mode==KNIFE_MULTICUT) esubdivideflag(1, 0, B_KNIFE,numcuts,SUBDIV_SELECT_ORIG); - - eed=em->edges.first; - while(eed){ - eed->f2=0; - eed->f1=0; - eed=eed->next; - } - } - /* Return to old cursor and flags...*/ - - addqueue(curarea->win, REDRAW, 0); - window_set_cursor(win, oldcursor); - BLI_ghash_free(gh, NULL, (GHashValFreeFP)MEM_freeN); - if (curve) MEM_freeN(curve); - -#ifdef WITH_VERSE - if(G.editMesh->vnode) - sync_all_versefaces_with_editfaces((VNode*)G.editMesh->vnode); -#endif - - BIF_undo_push("Knife"); -} - -/* seg_intersect() Determines if and where a mouse trail intersects an EditEdge */ - -static float seg_intersect(EditEdge *e, CutCurve *c, int len, char mode, struct GHash *gh) -{ -#define MAXSLOPE 100000 - float x11, y11, x12=0, y12=0, x2max, x2min, y2max; - float y2min, dist, lastdist=0, xdiff2, xdiff1; - float m1, b1, m2, b2, x21, x22, y21, y22, xi; - float yi, x1min, x1max, y1max, y1min, perc=0; - float *scr; - float threshold; - int i; - - //threshold = 0.000001; /*tolerance for vertex intersection*/ - threshold = G.scene->toolsettings->select_thresh / 100; - - /* Get screen coords of verts */ - scr = BLI_ghash_lookup(gh, e->v1); - x21=scr[0]; - y21=scr[1]; - - scr = BLI_ghash_lookup(gh, e->v2); - x22=scr[0]; - y22=scr[1]; - - xdiff2=(x22-x21); - if (xdiff2) { - m2=(y22-y21)/xdiff2; - b2= ((x22*y21)-(x21*y22))/xdiff2; - } - else { - m2=MAXSLOPE; /* Verticle slope */ - b2=x22; - } - - /*check for *exact* vertex intersection first*/ - if(mode!=KNIFE_MULTICUT){ - for (i=0; i<len; i++){ - if (i>0){ - x11=x12; - y11=y12; - } - else { - x11=c[i].x; - y11=c[i].y; - } - x12=c[i].x; - y12=c[i].y; - - /*test e->v1*/ - if((x11 == x21 && y11 == y21) || (x12 == x21 && y12 == y21)){ - e->v1->f1 = 1; - perc = 0; - return(perc); - } - /*test e->v2*/ - else if((x11 == x22 && y11 == y22) || (x12 == x22 && y12 == y22)){ - e->v2->f1 = 1; - perc = 0; - return(perc); - } - } - } - - /*now check for edge interesect (may produce vertex intersection as well)*/ - for (i=0; i<len; i++){ - if (i>0){ - x11=x12; - y11=y12; - } - else { - x11=c[i].x; - y11=c[i].y; - } - x12=c[i].x; - y12=c[i].y; - - /* Perp. Distance from point to line */ - if (m2!=MAXSLOPE) dist=(y12-m2*x12-b2);/* /sqrt(m2*m2+1); Only looking for */ - /* change in sign. Skip extra math */ - else dist=x22-x12; - - if (i==0) lastdist=dist; - - /* if dist changes sign, and intersect point in edge's Bound Box*/ - if ((lastdist*dist)<=0){ - xdiff1=(x12-x11); /* Equation of line between last 2 points */ - if (xdiff1){ - m1=(y12-y11)/xdiff1; - b1= ((x12*y11)-(x11*y12))/xdiff1; - } - else{ - m1=MAXSLOPE; - b1=x12; - } - x2max=MAX2(x21,x22)+0.001; /* prevent missed edges */ - x2min=MIN2(x21,x22)-0.001; /* due to round off error */ - y2max=MAX2(y21,y22)+0.001; - y2min=MIN2(y21,y22)-0.001; - - /* Found an intersect, calc intersect point */ - if (m1==m2){ /* co-incident lines */ - /* cut at 50% of overlap area*/ - x1max=MAX2(x11, x12); - x1min=MIN2(x11, x12); - xi= (MIN2(x2max,x1max)+MAX2(x2min,x1min))/2.0; - - y1max=MAX2(y11, y12); - y1min=MIN2(y11, y12); - yi= (MIN2(y2max,y1max)+MAX2(y2min,y1min))/2.0; - } - else if (m2==MAXSLOPE){ - xi=x22; - yi=m1*x22+b1; - } - else if (m1==MAXSLOPE){ - xi=x12; - yi=m2*x12+b2; - } - else { - xi=(b1-b2)/(m2-m1); - yi=(b1*m2-m1*b2)/(m2-m1); - } - - /* Intersect inside bounding box of edge?*/ - if ((xi>=x2min)&&(xi<=x2max)&&(yi<=y2max)&&(yi>=y2min)){ - /*test for vertex intersect that may be 'close enough'*/ - if(mode!=KNIFE_MULTICUT){ - if(xi <= (x21 + threshold) && xi >= (x21 - threshold)){ - if(yi <= (y21 + threshold) && yi >= (y21 - threshold)){ - e->v1->f1 = 1; - perc = 0; - break; - } - } - if(xi <= (x22 + threshold) && xi >= (x22 - threshold)){ - if(yi <= (y22 + threshold) && yi >= (y22 - threshold)){ - e->v2->f1 = 1; - perc = 0; - break; - } - } - } - if ((m2<=1.0)&&(m2>=-1.0)) perc = (xi-x21)/(x22-x21); - else perc=(yi-y21)/(y22-y21); /*lower slope more accurate*/ - //isect=32768.0*(perc+0.0000153); /* Percentage in 1/32768ths */ - break; - } - } - lastdist=dist; - } - return(perc); -} - -void LoopMenu() /* Called by KKey */ -{ - short ret; - - ret=pupmenu("Loop/Cut Menu %t|Loop Cut (CTRL-R)%x2|" - "Knife (Exact) %x3|Knife (Midpoints)%x4|Knife (Multicut)%x5"); - - switch (ret){ - case 2: - CutEdgeloop(1); - break; - case 3: - KnifeSubdivide(KNIFE_EXACT); - break; - case 4: - KnifeSubdivide(KNIFE_MIDPOINT); - break; - case 5: - KnifeSubdivide(KNIFE_MULTICUT); - break; - } - -} - |