forgot this file

1 files changed, 457 insertions, 0 deletions

diff --git a/source/blender/editors/mesh/loopcut.c b/source/blender/editors/mesh/loopcut.c
new file mode 100644
index 00000000000..95a14f9423f
--- /dev/null
+++ b/source/blender/editors/mesh/loopcut.c
@@ -0,0 +1,457 @@
+/**
+ * $Id:
+ *
+ * ***** BEGIN GPL 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. 
+ *
+ * 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) 2007 Blender Foundation.
+ * All rights reserved.
+ *
+ * 
+ * Contributor(s): Joseph Eagar, Joshua Leung
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#include <float.h>
+#define _USE_MATH_DEFINES
+#include <math.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdio.h>
+
+#include "DNA_ID.h"
+#include "DNA_screen_types.h"
+#include "DNA_scene_types.h"
+#include "DNA_userdef_types.h"
+#include "DNA_windowmanager_types.h"
+#include "DNA_object_types.h"
+
+#include "MEM_guardedalloc.h"
+
+#include "PIL_time.h"
+
+#include "BLI_blenlib.h"
+#include "BLI_dynstr.h" /*for WM_operator_pystring */
+#include "BLI_editVert.h"
+
+#include "BKE_blender.h"
+#include "BKE_context.h"
+#include "BKE_scene.h"
+#include "BKE_utildefines.h"
+#include "BKE_mesh.h"
+#include "BKE_tessmesh.h"
+#include "BKE_depsgraph.h"
+
+#include "BIF_gl.h"
+#include "BIF_glutil.h" /* for paint cursor */
+
+#include "IMB_imbuf_types.h"
+
+#include "ED_screen.h"
+#include "ED_util.h"
+#include "ED_space_api.h"
+#include "ED_view3d.h"
+#include "ED_mesh.h"
+
+#include "RNA_access.h"
+#include "RNA_define.h"
+
+#include "UI_interface.h"
+#include "UI_resources.h"
+
+#include "WM_api.h"
+#include "WM_types.h"
+
+#include "mesh_intern.h"
+
+/* ringsel operator */
+
+/* struct for properties used while drawing */
+typedef struct tringselOpData {
+	ARegion *ar;		/* region that ringsel was activated in */
+	void *draw_handle;	/* for drawing preview loop */
+	
+	float (*edges)[2][3];
+	int totedge;
+
+	ViewContext vc;
+
+	Object *ob;
+	BMEditMesh *em;
+	BMEdge *eed;
+
+	int extend;
+	int do_cut;
+} tringselOpData;
+
+/* modal loop selection drawing callback */
+static void ringsel_draw(const bContext *C, ARegion *ar, void *arg)
+{
+	int i;
+	tringselOpData *lcd = arg;
+	
+	glDisable(GL_DEPTH_TEST);
+
+	glPushMatrix();
+	glMultMatrixf(lcd->ob->obmat);
+
+	glColor3ub(255, 0, 255);
+	glBegin(GL_LINES);
+	for (i=0; i<lcd->totedge; i++) {
+		glVertex3fv(lcd->edges[i][0]);
+		glVertex3fv(lcd->edges[i][1]);
+	}
+	glEnd();
+
+	glPopMatrix();
+	glEnable(GL_DEPTH_TEST);
+}
+
+static void edgering_sel(tringselOpData *lcd, int previewlines, int select)
+{
+	BMEditMesh *em = lcd->em;
+	BMEdge *startedge = lcd->eed;
+	BMEdge *eed, *lasteed;
+	BMVert *v[2][2];
+	BMWalker walker;
+	float (*edges)[2][3] = NULL;
+	V_DYNDECLARE(edges);
+	float co[2][3];
+	int looking=1, i, j=0, tot=0;
+	
+	if (!startedge)
+		return;
+
+	if (lcd->edges) {
+		MEM_freeN(lcd->edges);
+		lcd->edges = NULL;
+		lcd->totedge = 0;
+	}
+
+	if (!lcd->extend) {
+		EDBM_clear_flag_all(lcd->em, BM_SELECT);
+	}
+
+	if (select) {
+		BMW_Init(&walker, em->bm, BMW_EDGERING, 0, 0);
+		eed = BMW_Begin(&walker, startedge);
+		for (; eed; eed=BMW_Step(&walker)) {
+			BM_Select(em->bm, eed, 1);
+		}
+		BMW_End(&walker);
+
+		return;
+	}
+
+	BMW_Init(&walker, em->bm, BMW_EDGERING, 0, 0);
+	eed = startedge = BMW_Begin(&walker, startedge);
+	for (lasteed=NULL; eed; eed=BMW_Step(&walker)) {
+		if (lasteed) {
+			BMIter liter;
+			BMLoop *l, *l2;
+			int rev;
+
+			v[0][0] = eed->v1;
+			v[0][1] = eed->v2;
+			v[1][0] = lasteed->v1;
+			v[1][1] = lasteed->v2;
+
+#if 0 //hrm.  this code may be useful later.
+			/*find correct order for v[1]*/
+
+			l = eed->loop;
+			if (!(BM_Edge_In_Face(l->f, eed) && BM_Edge_In_Face(l->f, lasteed))) {
+				BM_ITER(l, &liter, em->bm, BM_LOOPS_OF_LOOP, l) {
+					if (BM_Edge_In_Face(l->f, eed) && BM_Edge_In_Face(l->f, lasteed))
+						break;
+				}
+			}
+			
+			/*this should never happen*/
+			if (!l) {
+				lasteed = eed;
+				continue;
+			}
+			
+			l2 = BM_OtherFaceLoop(l->e, l->f, l->v);
+			rev = (l2 == (BMLoop*)l->head.prev);
+			while (l2->v != lasteed->v1 && l2->v != lasteed->v2) {
+				l2 = rev ? (BMLoop*)l2->head.prev : (BMLoop*)l2->head.next;
+			}
+
+			if (l2->v == lasteed->v1) {
+				v[1][0] = lasteed->v1;
+				v[1][1] = lasteed->v2;
+			} else {
+				v[1][0] = lasteed->v2;
+				v[1][1] = lasteed->v1;
+			}
+#endif
+			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];					
+				
+				V_GROW(edges);
+				VECCOPY(edges[tot][0], co[0]);
+				VECCOPY(edges[tot][1], co[1]);
+				tot++;
+			}
+		}
+		lasteed = eed;
+	}
+	
+	BM_Select(em->bm, startedge, 1);
+	BM_Select(em->bm, lasteed, 1);
+
+	if (BM_Edge_Share_Faces(lasteed, startedge)) {
+		v[0][0] = startedge->v1;
+		v[0][1] = startedge->v2;
+		v[1][0] = lasteed->v1;
+		v[1][1] = lasteed->v2;
+		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];					
+			
+			V_GROW(edges);
+			VECCOPY(edges[tot][0], co[0]);
+			VECCOPY(edges[tot][1], co[1]);
+			tot++;
+		}
+	}
+
+	BMW_End(&walker);
+	lcd->edges = edges;
+	lcd->totedge = tot;
+}
+
+static void ringsel_find_edge(tringselOpData *lcd, const bContext *C, ARegion *ar)
+{
+	if (lcd->eed)
+		edgering_sel(lcd, 1, 0);
+}
+
+static void ringsel_finish(bContext *C, wmOperator *op)
+{
+	tringselOpData *lcd= op->customdata;
+
+	if (lcd->eed) {
+		edgering_sel(lcd, 0, 1);
+		if (lcd->do_cut) {
+			BMEditMesh *em = lcd->em;
+			
+			BM_esubdivideflag(lcd->ob, em->bm, BM_SELECT, 0.0f, 
+			                  0.0f, 0, 1, SUBDIV_SELECT_LOOPCUT, 
+			                  SUBD_PATH, 0, 0);
+
+			WM_event_add_notifier(C, NC_GEOM|ND_SELECT|ND_DATA, lcd->ob->data);
+			DAG_id_flush_update(lcd->ob->data, OB_RECALC_DATA);
+		}
+	}
+}
+
+/* called when modal loop selection is done... */
+static void ringsel_exit (bContext *C, wmOperator *op)
+{
+	tringselOpData *lcd= op->customdata;
+
+	/* deactivate the extra drawing stuff in 3D-View */
+	ED_region_draw_cb_exit(lcd->ar->type, lcd->draw_handle);
+	
+	if (lcd->edges)
+		MEM_freeN(lcd->edges);
+
+	ED_region_tag_redraw(lcd->ar);
+
+	/* free the custom data */
+	MEM_freeN(lcd);
+	op->customdata= NULL;
+}
+
+/* called when modal loop selection gets set up... */
+static int ringsel_init (bContext *C, wmOperator *op, int do_cut)
+{
+	tringselOpData *lcd;
+	
+	/* alloc new customdata */
+	lcd= op->customdata= MEM_callocN(sizeof(tringselOpData), "ringsel Modal Op Data");
+	
+	/* assign the drawing handle for drawing preview line... */
+	lcd->ar= CTX_wm_region(C);
+	lcd->draw_handle= ED_region_draw_cb_activate(lcd->ar->type, ringsel_draw, lcd, REGION_DRAW_POST);
+	lcd->ob = CTX_data_edit_object(C);
+	lcd->em= ((Mesh *)lcd->ob->data)->edit_btmesh;
+	lcd->extend = do_cut ? 0 : RNA_boolean_get(op->ptr, "extend");
+	lcd->do_cut = do_cut;
+	em_setup_viewcontext(C, &lcd->vc);
+
+	ED_region_tag_redraw(lcd->ar);
+
+	return 1;
+}
+
+static int ringsel_cancel (bContext *C, wmOperator *op)
+{
+	/* this is just a wrapper around exit() */
+	ringsel_exit(C, op);
+	return OPERATOR_CANCELLED;
+}
+
+static int ringsel_invoke (bContext *C, wmOperator *op, wmEvent *evt)
+{
+	ScrArea *sa = CTX_wm_area(C);
+	tringselOpData *lcd;
+	BMEdge *edge;
+	int dist = 75;
+
+	view3d_operator_needs_opengl(C);
+
+	if (!ringsel_init(C, op, 0))
+		return OPERATOR_CANCELLED;
+	
+	/* add a modal handler for this operator - handles loop selection */
+	WM_event_add_modal_handler(C, &CTX_wm_window(C)->handlers, op);
+
+	lcd = op->customdata;
+	lcd->vc.mval[0] = evt->mval[0];
+	lcd->vc.mval[1] = evt->mval[1];
+	
+	edge = EDBM_findnearestedge(&lcd->vc, &dist);
+	if (edge != lcd->eed) {
+		lcd->eed = edge;
+		ringsel_find_edge(lcd, C, lcd->ar);
+	}
+
+	return OPERATOR_RUNNING_MODAL;
+}
+
+
+static int ringcut_invoke (bContext *C, wmOperator *op, wmEvent *evt)
+{
+	ScrArea *sa = CTX_wm_area(C);
+	tringselOpData *lcd;
+	BMEdge *edge;
+	int dist = 75;
+
+	view3d_operator_needs_opengl(C);
+
+	if (!ringsel_init(C, op, 1))
+		return OPERATOR_CANCELLED;
+	
+	/* add a modal handler for this operator - handles loop selection */
+	WM_event_add_modal_handler(C, &CTX_wm_window(C)->handlers, op);
+
+	lcd = op->customdata;
+	lcd->vc.mval[0] = evt->mval[0];
+	lcd->vc.mval[1] = evt->mval[1];
+	
+	edge = EDBM_findnearestedge(&lcd->vc, &dist);
+	if (edge != lcd->eed) {
+		lcd->eed = edge;
+		ringsel_find_edge(lcd, C, lcd->ar);
+	}
+
+	return OPERATOR_RUNNING_MODAL;
+}
+
+static int ringsel_modal (bContext *C, wmOperator *op, wmEvent *event)
+{
+	tringselOpData *lcd= op->customdata;
+
+	view3d_operator_needs_opengl(C);
+
+	switch (event->type) {
+		case RIGHTMOUSE:
+		case LEFTMOUSE: /* confirm */ // XXX hardcoded
+			if (event->val == 0) {
+				/* finish */
+				ED_region_tag_redraw(lcd->ar);
+
+				ringsel_finish(C, op);
+				ringsel_exit(C, op);
+				
+				return OPERATOR_FINISHED;
+			}
+
+			ED_region_tag_redraw(lcd->ar);
+			break;
+		case MOUSEMOVE: { /* mouse moved somewhere to select another loop */
+			int dist = 75;
+			BMEdge *edge;
+
+			lcd->vc.mval[0] = event->mval[0];
+			lcd->vc.mval[1] = event->mval[1];
+			edge = EDBM_findnearestedge(&lcd->vc, &dist);
+
+			if (edge != lcd->eed) {
+				lcd->eed = edge;
+				ringsel_find_edge(lcd, C, lcd->ar);
+			}
+
+			ED_region_tag_redraw(lcd->ar);
+			break;
+		}
+	}
+	
+	/* keep going until the user confirms */
+	return OPERATOR_RUNNING_MODAL;
+}
+
+void MESH_OT_edgering_select (wmOperatorType *ot)
+{
+	/* description */
+	ot->name= "Edge Ring Select";
+	ot->idname= "MESH_OT_edgering_select";
+	ot->description= "Select an edge ring";
+	
+	/* callbacks */
+	ot->invoke= ringsel_invoke;
+	ot->modal= ringsel_modal;
+	ot->cancel= ringsel_cancel;
+	ot->poll= ED_operator_editmesh;
+	
+	/* flags */
+	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO|OPTYPE_BLOCKING;
+
+	RNA_def_boolean(ot->srna, "extend", 0, "Extend", "Extend the selection");
+}
+
+void MESH_OT_loopcut (wmOperatorType *ot)
+{
+	/* description */
+	ot->name= "Loop Cut";
+	ot->idname= "MESH_OT_loopcut";
+	ot->description= "Add a new loop between existing loops.";
+	
+	/* callbacks */
+	ot->invoke= ringcut_invoke;
+	ot->modal= ringsel_modal;
+	ot->cancel= ringsel_cancel;
+	ot->poll= ED_operator_editmesh;
+	
+	/* flags */
+	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO|OPTYPE_BLOCKING;
+}