blender-archive/source/blender/src/editview.c

/**
 * $Id$
 *
 * ***** 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) 2001-2002 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 *****
 * cursor/gestures/selecteren
 */

#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <string.h>

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "IMB_imbuf.h"
#include "PIL_time.h"

#include "DNA_armature_types.h"
#include "DNA_meta_types.h"
#include "DNA_mesh_types.h"
#include "DNA_curve_types.h"
#include "DNA_lattice_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "DNA_screen_types.h"
#include "DNA_view3d_types.h"
#include "DNA_userdef_types.h"

#include "BLI_blenlib.h"
#include "BLI_arithb.h"
#include "BLI_editVert.h"

#include "BKE_armature.h"
#include "BKE_global.h"
#include "BKE_lattice.h"
#include "BKE_mesh.h"
#include "BKE_utildefines.h"

#include "BIF_butspace.h"
#include "BIF_editarmature.h"
#include "BIF_editgroup.h"
#include "BIF_editmesh.h"
#include "BIF_editoops.h"
#include "BIF_editsima.h"
#include "BIF_editview.h"
#include "BIF_gl.h"
#include "BIF_glutil.h"
#include "BIF_interface.h"
#include "BIF_mywindow.h"
#include "BIF_space.h"
#include "BIF_screen.h"
#include "BIF_toolbox.h"

#include "BDR_editobject.h"	/* For headerprint */
#include "BDR_vpaint.h"
#include "BDR_editface.h"
#include "BDR_drawobject.h"
#include "BDR_editcurve.h"

#include "BSE_edit.h"
#include "BSE_view.h"		/* give_cursor() */
#include "BSE_editipo.h"
#include "BSE_drawview.h"
#include "BSE_editaction.h"

#include "editmesh.h"	// borderselect uses it...
#include "blendef.h"
#include "mydevice.h"

#include "BIF_transform.h"

extern ListBase editNurb; /* originally from exports.h, memory from editcurve.c*/
/* editmball.c */
extern ListBase editelems;

/* local prototypes */
void obedit_selectionCB(short , Object *, short *, float ); /* called in edit.c */ 

void arrows_move_cursor(unsigned short event)
{
	short mval[2];

	getmouseco_sc(mval);

	if(event==UPARROWKEY) {
		warp_pointer(mval[0], mval[1]+1);
	} else if(event==DOWNARROWKEY) {
		warp_pointer(mval[0], mval[1]-1);
	} else if(event==LEFTARROWKEY) {
		warp_pointer(mval[0]-1, mval[1]);
	} else if(event==RIGHTARROWKEY) {
		warp_pointer(mval[0]+1, mval[1]);
	}
}

/* *********************** GESTURE AND LASSO ******************* */

/* helper also for borderselect */
static int edge_fully_inside_rect(rcti rect, short x1, short y1, short x2, short y2)
{
	
	// check points in rect
	if(rect.xmin<x1 && rect.xmax>x1 && rect.ymin<y1 && rect.ymax>y1) 
		if(rect.xmin<x2 && rect.xmax>x2 && rect.ymin<y2 && rect.ymax>y2) return 1;
	
	return 0;
	
}

static int edge_inside_rect(rcti rect, short x1, short y1, short x2, short y2)
{
	int d1, d2, d3, d4;
	
	// check points in rect
	if(rect.xmin<x1 && rect.xmax>x1 && rect.ymin<y1 && rect.ymax>y1) return 1;
	if(rect.xmin<x2 && rect.xmax>x2 && rect.ymin<y2 && rect.ymax>y2) return 1;
	
	/* check points completely out rect */
	if(x1<rect.xmin && x2<rect.xmin) return 0;
	if(x1>rect.xmax && x2>rect.xmax) return 0;
	if(y1<rect.ymin && y2<rect.ymin) return 0;
	if(y1>rect.ymax && y2>rect.ymax) return 0;
	
	// simple check lines intersecting. 
	d1= (y1-y2)*(x1- rect.xmin ) + (x2-x1)*(y1- rect.ymin );
	d2= (y1-y2)*(x1- rect.xmin ) + (x2-x1)*(y1- rect.ymax );
	d3= (y1-y2)*(x1- rect.xmax ) + (x2-x1)*(y1- rect.ymax );
	d4= (y1-y2)*(x1- rect.xmax ) + (x2-x1)*(y1- rect.ymin );
	
	if(d1<0 && d2<0 && d3<0 && d4<0) return 0;
	if(d1>0 && d2>0 && d3>0 && d4>0) return 0;
	
	return 1;
}


#define MOVES_GESTURE 50
#define MOVES_LASSO 500

static int lasso_inside(short mcords[][2], short moves, short sx, short sy)
{
	/* we do the angle rule, define that all added angles should be about zero or 2*PI */
	float angletot=0.0, len, dot, ang, cross, fp1[2], fp2[2];
	int a;
	short *p1, *p2;
	
	p1= mcords[moves-1];
	p2= mcords[0];
	
	/* first vector */
	fp1[0]= (float)(p1[0]-sx);
	fp1[1]= (float)(p1[1]-sy);
	len= sqrt(fp1[0]*fp1[0] + fp1[1]*fp1[1]);
	fp1[0]/= len;
	fp1[1]/= len;
	
	for(a=0; a<moves; a++) {
		/* second vector */
		fp2[0]= (float)(p2[0]-sx);
		fp2[1]= (float)(p2[1]-sy);
		len= sqrt(fp2[0]*fp2[0] + fp2[1]*fp2[1]);
		fp2[0]/= len;
		fp2[1]/= len;
		
		/* dot and angle and cross */
		dot= fp1[0]*fp2[0] + fp1[1]*fp2[1];
		ang= fabs(saacos(dot));

		cross= (float)((p1[1]-p2[1])*(p1[0]-sx) + (p2[0]-p1[0])*(p1[1]-sy));
		
		if(cross<0.0) angletot-= ang;
		else angletot+= ang;
		
		/* circulate */
		fp1[0]= fp2[0]; fp1[1]= fp2[1];
		p1= p2;
		p2= mcords[a+1];
	}
	
	if( fabs(angletot) > 4.0 ) return 1;
	return 0;
}

/* edge version for lasso select. we assume boundbox check was done */
static int lasso_inside_edge(short mcords[][2], short moves, short *v1, short *v2)
{
	int a;

	// check points in lasso
	if(lasso_inside(mcords, moves, v1[0], v1[1])) return 1;
	if(lasso_inside(mcords, moves, v2[0], v2[1])) return 1;
	
	/* no points in lasso, so we have to intersect with lasso edge */
	
	if( IsectLL2Ds(mcords[0], mcords[moves-1], v1, v2) > 0) return 1;
	for(a=0; a<moves-1; a++) {
		if( IsectLL2Ds(mcords[a], mcords[a+1], v1, v2) > 0) return 1;
	}
	
	return 0;
}


/* warning; lasso select with backbuffer-check draws in backbuf with persp(PERSP_WIN) 
   and returns with persp(PERSP_VIEW). After lasso select backbuf is not OK
*/
static void do_lasso_select_objects(short mcords[][2], short moves, short select)
{
	Base *base;
	
	for(base= G.scene->base.first; base; base= base->next) {
		if(base->lay & G.vd->lay) {
			project_short(base->object->obmat[3], &base->sx);
			if(lasso_inside(mcords, moves, base->sx, base->sy)) {
				
				if(select) base->flag |= SELECT;
				else base->flag &= ~SELECT;
				base->object->flag= base->flag;
			}
		}
	}
}

static void lasso_select_boundbox(rcti *rect, short mcords[][2], short moves)
{
	short a;
	
	rect->xmin= rect->xmax= mcords[0][0];
	rect->ymin= rect->ymax= mcords[0][1];
	
	for(a=1; a<moves; a++) {
		if(mcords[a][0]<rect->xmin) rect->xmin= mcords[a][0];
		else if(mcords[a][0]>rect->xmax) rect->xmax= mcords[a][0];
		if(mcords[a][1]<rect->ymin) rect->ymin= mcords[a][1];
		else if(mcords[a][1]>rect->ymax) rect->ymax= mcords[a][1];
	}
}

static void do_lasso_select_mesh(short mcords[][2], short moves, short select)
{
	extern int em_solidoffs, em_wireoffs;	// let linker solve it... from editmesh_mods.c 
	EditMesh *em = G.editMesh;
	EditVert *eve;
	EditEdge *eed;
	EditFace *efa;
	rcti rect;
	int index, bbsel=0; // bbsel: no clip needed with screencoords
	
	lasso_select_boundbox(&rect, mcords, moves);
	
	bbsel= EM_mask_init_backbuf_border(mcords, moves, rect.xmin, rect.ymin, rect.xmax, rect.ymax);
	
	if(G.scene->selectmode & SCE_SELECT_VERTEX) {
		if(bbsel==0) calc_meshverts_ext();	/* clips, drawobject.c */
		index= em_wireoffs;
		for(eve= em->verts.first; eve; eve= eve->next, index++) {
			if(eve->h==0) {
				if(bbsel) {
					if(EM_check_backbuf_border(index)) {
						if(select) eve->f|= 1;
						else eve->f&= 254;
					}
				}
				else if(eve->xs>rect.xmin && eve->xs<rect.xmax && eve->ys>rect.ymin && eve->ys<rect.ymax) {
					if(lasso_inside(mcords, moves, eve->xs, eve->ys)) {
						if(select) eve->f|= 1;
						else eve->f&= 254;
					}
				}
			}
		}
	}
	if(G.scene->selectmode & SCE_SELECT_EDGE) {
		short done= 0;
		
		calc_meshverts_ext_f2();	/* doesnt clip, drawobject.c */
		index= em_solidoffs;
		
		/* two stages, for nice edge select first do 'both points in rect' 
			also when bbsel is true */
		for(eed= em->edges.first; eed; eed= eed->next, index++) {
			if(eed->h==0) {
				if(edge_fully_inside_rect(rect, eed->v1->xs, eed->v1->ys,  eed->v2->xs, eed->v2->ys)) {
					if(lasso_inside(mcords, moves, eed->v1->xs, eed->v1->ys)) {
						if(lasso_inside(mcords, moves, eed->v2->xs, eed->v2->ys)) {
							if(EM_check_backbuf_border(index)) {
								EM_select_edge(eed, select);
								done = 1;
							}
						}
					}
				}
			}
		}
		
		if(done==0) {
			index= em_solidoffs;
			for(eed= em->edges.first; eed; eed= eed->next, index++) {
				if(eed->h==0) {
					if(bbsel) {
						if(EM_check_backbuf_border(index))
							EM_select_edge(eed, select);
					}
					else if(lasso_inside_edge(mcords, moves, &eed->v1->xs, &eed->v2->xs)) {
						EM_select_edge(eed, select);
					}
				}
			}
		}
	}
	
	if(G.scene->selectmode & SCE_SELECT_FACE) {
		if(bbsel==0) calc_mesh_facedots_ext();
		index= 1;
		for(efa= em->faces.first; efa; efa= efa->next, index++) {
			if(efa->h==0) {
				if(bbsel) {
					if(EM_check_backbuf_border(index)) {
						EM_select_face_fgon(efa, select);
					}
				}
				else if(efa->xs>rect.xmin && efa->xs<rect.xmax && efa->ys>rect.ymin && efa->ys<rect.ymax) {
					if(lasso_inside(mcords, moves, efa->xs, efa->ys)) {
						EM_select_face_fgon(efa, select);
					}
				}
			}
		}
	}
	
	EM_free_backbuf_border();
	EM_selectmode_flush();
	
}

static void do_lasso_select_curve(short mcords[][2], short moves, short select)
{
	Nurb *nu;
	BPoint *bp;
	BezTriple *bezt;
	int a;
	
	calc_nurbverts_ext();	/* drawobject.c */
	nu= editNurb.first;
	while(nu) {
		if((nu->type & 7)==CU_BEZIER) {
			bezt= nu->bezt;
			a= nu->pntsu;
			while(a--) {
				if(bezt->hide==0) {
					if(lasso_inside(mcords, moves, bezt->s[0][0], bezt->s[0][1])) {
						if(select) bezt->f1|= 1;
						else bezt->f1 &= ~1;
					}
					if(lasso_inside(mcords, moves, bezt->s[1][0], bezt->s[1][1])) {
						if(select) bezt->f2|= 1;
						else bezt->f2 &= ~1;
					}
					if(lasso_inside(mcords, moves, bezt->s[2][0], bezt->s[2][1])) {
						if(select) bezt->f3|= 1;
						else bezt->f3 &= ~1;
					}
				}
				bezt++;
			}
		}
		else {
			bp= nu->bp;
			a= nu->pntsu*nu->pntsv;
			while(a--) {
				if(bp->hide==0) {
					if(lasso_inside(mcords, moves, bp->s[0], bp->s[1])) {
						if(select) bp->f1|= 1;
						else bp->f1 &= ~1;
					}
				}
				bp++;
			}
		}
		nu= nu->next;
	}
}

static void do_lasso_select_lattice(short mcords[][2], short moves, short select)
{
	BPoint *bp;
	int a;
	
	calc_lattverts_ext();
	
	bp= editLatt->def;
	
	a= editLatt->pntsu*editLatt->pntsv*editLatt->pntsw;
	while(a--) {
		if(bp->hide==0) {
			if(lasso_inside(mcords, moves, bp->s[0], bp->s[1])) {
				if(select) bp->f1|= 1;
				else bp->f1 &= ~1;
			}
		}
		bp++;
	}
}


static void do_lasso_select_facemode(short mcords[][2], short moves, short select)
{
	extern int em_vertoffs;		// still bad code, let linker solve for now
	Mesh *me;
	TFace *tface;
	rcti rect;
	int a;
	
	me= get_mesh(OBACT);
	if(me==NULL || me->tface==NULL) return;
	if(me->totface==0) return;
	tface= me->tface;
	
	em_vertoffs= me->totface+1;	// max index array
	
	lasso_select_boundbox(&rect, mcords, moves);
	EM_mask_init_backbuf_border(mcords, moves, rect.xmin, rect.ymin, rect.xmax, rect.ymax);
	
	for(a=1; a<=me->totface; a++, tface++) {
		if(EM_check_backbuf_border(a)) {
			if(select) tface->flag |= TF_SELECT;
			else tface->flag &= ~TF_SELECT;
		}
	}
	
	EM_free_backbuf_border();
	
	allqueue(REDRAWVIEW3D, 0);
	allqueue(REDRAWIMAGE, 0);
}

static void do_lasso_select(short mcords[][2], short moves, short select)
{
	if(G.obedit==NULL) {
		if(G.f & G_FACESELECT)
			do_lasso_select_facemode(mcords, moves, select);
		else if(G.f & (G_VERTEXPAINT|G_TEXTUREPAINT|G_WEIGHTPAINT))
			;
		else  
			do_lasso_select_objects(mcords, moves, select);
	}
	else if(G.obedit->type==OB_MESH) 
		do_lasso_select_mesh(mcords, moves, select);
	else if(G.obedit->type==OB_CURVE || G.obedit->type==OB_SURF) 
		do_lasso_select_curve(mcords, moves, select);
	else if(G.obedit->type==OB_LATTICE) 
		do_lasso_select_lattice(mcords, moves, select);
	
	BIF_undo_push("Lasso select");

	allqueue(REDRAWVIEW3D, 0);
	countall();
}

/* un-draws and draws again */
static void draw_lasso_select(short mcords[][2], short moves, short end)
{
	int a;
	
	setlinestyle(2);
	/* clear draw */
	if(moves>1) {
		for(a=1; a<=moves-1; a++) {
			sdrawXORline(mcords[a-1][0], mcords[a-1][1], mcords[a][0], mcords[a][1]);
		}
		sdrawXORline(mcords[moves-1][0], mcords[moves-1][1], mcords[0][0], mcords[0][1]);
	}
	if(!end) {
		/* new draw */
		for(a=1; a<=moves; a++) {
			sdrawXORline(mcords[a-1][0], mcords[a-1][1], mcords[a][0], mcords[a][1]);
		}
		sdrawXORline(mcords[moves][0], mcords[moves][1], mcords[0][0], mcords[0][1]);
	}
	setlinestyle(0);
}


static char interpret_move(short mcord[][2], int count)
{
	float x1, x2, y1, y2, d1, d2, inp, sq, mouse[MOVES_GESTURE][2];
	int i, j, dir = 0;
	
	if (count <= 10) return ('g');

	/* from short to float (drawing is with shorts) */
	for(j=0; j<count; j++) {
		mouse[j][0]= mcord[j][0];
		mouse[j][1]= mcord[j][1];
	}
	
	/* new method:
	 * 
	 * starting from end points, calculate centre with maximum distance
	 * dependant at the angle s / g / r is defined
	 */
	

	/* filter */
	
	for( j = 3 ; j > 0; j--){
		x1 = mouse[1][0];
		y1 = mouse[1][1];
		for (i = 2; i < count; i++){
			x2 = mouse[i-1][0];
			y2 = mouse[i-1][1];
			mouse[i-1][0] = ((x1 + mouse[i][0]) /4.0) + (x2 / 2.0);
			mouse[i-1][1] = ((y1 + mouse[i][1]) /4.0) + (y2 / 2.0);
			x1 = x2;
			y1 = y2;
		}
	}

	/* make overview of directions */
	for (i = 0; i <= count - 2; i++){
		x1 = mouse[i][0] - mouse[i + 1][0];
		y1 = mouse[i][1] - mouse[i + 1][1];

		if (x1 < -0.5){
			if (y1 < -0.5) dir |= 32;
			else if (y1 > 0.5) dir |= 128;
			else dir |= 64;
		} else if (x1 > 0.5){
			if (y1 < -0.5) dir |= 8;
			else if (y1 > 0.5) dir |= 2;
			else dir |= 4;
		} else{
			if (y1 < -0.5) dir |= 16;
			else if (y1 > 0.5) dir |= 1;
			else dir |= 0;
		}
	}
	
	/* move all crosses to the right */
	for (i = 7; i>=0 ; i--){
		if (dir & 128) dir = (dir << 1) + 1;
		else break;
	}
	dir &= 255;
	for (i = 7; i>=0 ; i--){
		if ((dir & 1) == 0) dir >>= 1;
		else break;
	}
	
	/* in theory: 1 direction: straight line
     * multiple sequential directions: circle
     * non-sequential, and 1 bit set in upper 4 bits: size
     */
	switch(dir){
	case 1:
		return ('g');
		break;
	case 3:
	case 7:
		x1 = mouse[0][0] - mouse[count >> 1][0];
		y1 = mouse[0][1] - mouse[count >> 1][1];
		x2 = mouse[count >> 1][0] - mouse[count - 1][0];
		y2 = mouse[count >> 1][1] - mouse[count - 1][1];
		d1 = (x1 * x1) + (y1 * y1);
		d2 = (x2 * x2) + (y2 * y2);
		sq = sqrt(d1);
		x1 /= sq; 
		y1 /= sq;
		sq = sqrt(d2);
		x2 /= sq; 
		y2 /= sq;
		inp = (x1 * x2) + (y1 * y2);
		/*printf("%f\n", inp);*/
		if (inp > 0.9) return ('g');
		else return ('r');
		break;
	case 15:
	case 31:
	case 63:
	case 127:
	case 255:
		return ('r');
		break;
	default:
		/* for size at least one of the higher bits has to be set */
		if (dir < 16) return ('r');
		else return ('s');
	}

	return (0);
}


/* return 1 to denote gesture did something, also does lasso */
int gesture(void)
{
	short mcords[MOVES_LASSO][2]; // the larger size
	int i= 1, end= 0, a;
	unsigned short event=0;
	short mval[2], val, timer=0, mousebut, lasso=0, maxmoves;
	
	if (U.flag & USER_LMOUSESELECT) mousebut = R_MOUSE;
	else mousebut = L_MOUSE;
	
	if(G.qual & LR_CTRLKEY) {
		if(curarea->spacetype==SPACE_VIEW3D) {
			if(G.obedit==NULL) {
				if(G.f & (G_VERTEXPAINT|G_TEXTUREPAINT|G_WEIGHTPAINT)) return 0;
				if(G.obpose) return 0;
			}
			lasso= 1;
		}
	}
	
	glDrawBuffer(GL_FRONT);
	persp(PERSP_WIN);	/*  ortho at pixel level */
	
	getmouseco_areawin(mval);
	
	mcords[0][0] = mval[0];
	mcords[0][1] = mval[1];
	
	if(lasso) maxmoves= MOVES_LASSO;
	else maxmoves= MOVES_GESTURE;
	
	while(get_mbut() & mousebut) {
		
		if(qtest()) event= extern_qread(&val);
		else if(i==1) {
			/* not drawing yet... check for toolbox */
			PIL_sleep_ms(10);
			timer++;
			if(timer>=10*U.tb_leftmouse) {
				glDrawBuffer(GL_BACK); /* !! */
				toolbox_n();
				return 1;
			}
		}
		
		switch (event) {
		case MOUSEY:
			getmouseco_areawin(mval);
			if( abs(mval[0]-mcords[i-1][0])>3 || abs(mval[1]-mcords[i-1][1])>3 ) {
				mcords[i][0] = mval[0];
				mcords[i][1] = mval[1];
				
				if(i) {
					if(lasso) draw_lasso_select(mcords, i, 0);
					else sdrawXORline(mcords[i-1][0], mcords[i-1][1], mcords[i][0], mcords[i][1]);
					glFlush();
				}
				i++;
			}
			break;
		case MOUSEX:
			break;
		case LEFTMOUSE:
			break;
		default:
			if(event) end= 1;	/* blender returns 0 */
			break;
		}
		if (i == maxmoves || end == 1) break;
	}
	
	/* clear */
	if(lasso) draw_lasso_select(mcords, i, 1);
	else for(a=1; a<i; a++) {
		sdrawXORline(mcords[a-1][0], mcords[a-1][1], mcords[a][0], mcords[a][1]);
	}
	
	persp(PERSP_VIEW);
	glDrawBuffer(GL_BACK);
	
	if (i > 2) {
		if(lasso) do_lasso_select(mcords, i, (G.qual & LR_SHIFTKEY)==0);
		else {
			i = interpret_move(mcords, i);
			
			if(i) {
				if(curarea->spacetype==SPACE_IPO) transform_ipo(i);
				else if(curarea->spacetype==SPACE_IMAGE) transform_tface_uv(i, 0);
				else if(curarea->spacetype==SPACE_OOPS) transform_oops('g', 0);
				else {
					if(i=='g') Transform(TFM_TRANSLATION, CTX_NONE);
					else if(i=='r') Transform(TFM_ROTATION, CTX_NONE);
					else Transform(TFM_RESIZE, CTX_NONE);
				}
			}
		}
		return 1;
	}
	return 0;
}

void mouse_cursor(void)
{
	extern float zfac;	/* view.c */
	float dx, dy, fz, *fp = NULL, dvec[3], oldcurs[3];
	short mval[2], mx, my, lr_click=0;
	
	if(gesture()) return;
	
	getmouseco_areawin(mval);
	
	if(mval[0]!=G.vd->mx || mval[1]!=G.vd->my) {

		mx= mval[0];
		my= mval[1];
		
		fp= give_cursor();
		
		if(G.obedit && ((G.qual & LR_CTRLKEY) || get_mbut()&R_MOUSE )) lr_click= 1;
		VECCOPY(oldcurs, fp);
		
		project_short_noclip(fp, mval);

		initgrabz(fp[0], fp[1], fp[2]);
		
		if(mval[0]!=3200) {
			
			window_to_3d(dvec, mval[0]-mx, mval[1]-my);
			VecSubf(fp, fp, dvec);
			
		}
		else {

			dx= ((float)(mx-(curarea->winx/2)))*zfac/(curarea->winx/2);
			dy= ((float)(my-(curarea->winy/2)))*zfac/(curarea->winy/2);
			
			fz= G.vd->persmat[0][3]*fp[0]+ G.vd->persmat[1][3]*fp[1]+ G.vd->persmat[2][3]*fp[2]+ G.vd->persmat[3][3];
			fz= fz/zfac;
			
			fp[0]= (G.vd->persinv[0][0]*dx + G.vd->persinv[1][0]*dy+ G.vd->persinv[2][0]*fz)-G.vd->ofs[0];
			fp[1]= (G.vd->persinv[0][1]*dx + G.vd->persinv[1][1]*dy+ G.vd->persinv[2][1]*fz)-G.vd->ofs[1];
			fp[2]= (G.vd->persinv[0][2]*dx + G.vd->persinv[1][2]*dy+ G.vd->persinv[2][2]*fz)-G.vd->ofs[2];
		}
		
		allqueue(REDRAWVIEW3D, 1);
	}
	
	if(lr_click) {
		if(G.obedit->type==OB_MESH) addvert_mesh();
		else if ELEM(G.obedit->type, OB_CURVE, OB_SURF) addvert_Nurb(0);
		else if (G.obedit->type==OB_ARMATURE) addvert_armature();
		VECCOPY(fp, oldcurs);
	}
	
}

void deselectall(void)	/* is toggle */
{
	Base *base;
	int a=0;

	base= FIRSTBASE;
	while(base) {
		if TESTBASE(base) {
			a= 1;
			break;
		}
		base= base->next;
	}
	
	base= FIRSTBASE;
	while(base) {
		if(base->lay & G.vd->lay) {
			if(a) base->flag &= ~SELECT;
			else base->flag |= SELECT;
			base->object->flag= base->flag;
		}
		base= base->next;
	}

	allqueue(REDRAWVIEW3D, 0);
	allqueue(REDRAWDATASELECT, 0);
	allqueue(REDRAWNLA, 0);
	
	countall();
	BIF_undo_push("(De)select all");
}

/* selects all objects of a particular type, on currently visible layers */
void selectall_type(short obtype) 
{
	Base *base;
	
	base= FIRSTBASE;
	while(base) {
		if((base->lay & G.vd->lay) && (base->object->type == obtype)) {
			base->flag |= SELECT;
			base->object->flag= base->flag;
		}
		base= base->next;
	}

	allqueue(REDRAWVIEW3D, 0);
	allqueue(REDRAWDATASELECT, 0);
	allqueue(REDRAWNLA, 0);
	
	countall();
	BIF_undo_push("Select all per type");
}
/* selects all objects on a particular layer */
void selectall_layer(unsigned int layernum) 
{
	Base *base;
	
	base= FIRSTBASE;
	while(base) {
		if (base->lay == (1<< (layernum -1))) {
			base->flag |= SELECT;
			base->object->flag= base->flag;
		}
		base= base->next;
	}

	allqueue(REDRAWVIEW3D, 0);
	allqueue(REDRAWDATASELECT, 0);
	allqueue(REDRAWNLA, 0);
	
	countall();
	BIF_undo_push("Select all per layer");
}

static void deselectall_except(Base *b)   /* deselect all except b */
{
	Base *base;

	base= FIRSTBASE;
	while(base) {
		if (base->flag & SELECT) {
			if(b!=base) {
				base->flag &= ~SELECT;
				base->object->flag= base->flag;
			}
		}
		base= base->next;
	}
}

#if 0
/* smart function to sample a rect spiralling outside, nice for backbuf selection */
static unsigned int samplerect(unsigned int *buf, int size, unsigned int dontdo)
{
	Base *base;
	unsigned int *bufmin,*bufmax;
	int a,b,rc,tel,aantal,dirvec[4][2],maxob;
	unsigned int retval=0;
	
	base= LASTBASE;
	if(base==0) return 0;
	maxob= base->selcol;

	aantal= (size-1)/2;
	rc= 0;

	dirvec[0][0]= 1;
	dirvec[0][1]= 0;
	dirvec[1][0]= 0;
	dirvec[1][1]= -size;
	dirvec[2][0]= -1;
	dirvec[2][1]= 0;
	dirvec[3][0]= 0;
	dirvec[3][1]= size;

	bufmin= buf;
	bufmax= buf+ size*size;
	buf+= aantal*size+ aantal;

	for(tel=1;tel<=size;tel++) {

		for(a=0;a<2;a++) {
			for(b=0;b<tel;b++) {

				if(*buf && *buf<=maxob && *buf!=dontdo) return *buf;
				if( *buf==dontdo ) retval= dontdo;	/* if only color dontdo is available, still return dontdo */
				
				buf+= (dirvec[rc][0]+dirvec[rc][1]);

				if(buf<bufmin || buf>=bufmax) return retval;
			}
			rc++;
			rc &= 3;
		}
	}
	return retval;
}
#endif

#define SELECTSIZE	51

void set_active_base(Base *base)
{
	
	BASACT= base;
	
	if(base) {
		/* signals to buttons */
		redraw_test_buttons(base->object);

		set_active_group();
		
		/* signal to ipo */

		if (base) {
			allqueue(REDRAWIPO, base->object->ipowin);
			allqueue(REDRAWACTION, 0);
			allqueue(REDRAWNLA, 0);
		}
	}
}

void set_active_object(Object *ob)
{
	Base *base;
	
	base= FIRSTBASE;
	while(base) {
		if(base->object==ob) {
			set_active_base(base);
			return;
		}
		base= base->next;
	}
}

/* The max number of menu items in an object select menu */
#define SEL_MENU_SIZE 22

static Base *mouse_select_menu(unsigned int *buffer, int hits, short *mval)
{
	Base *baseList[SEL_MENU_SIZE]={NULL}; /*baseList is used to store all possible bases to bring up a menu */
	Base *base;
	short baseCount = 0;
	char menuText[20 + SEL_MENU_SIZE*32] = "Select Object%t";	// max ob name = 22
	char str[32];
	
	for(base=FIRSTBASE; base; base= base->next) {
		if(base->lay & G.vd->lay) {
			baseList[baseCount] = NULL;
			
			/* two selection methods, the CTRL select uses max dist of 15 */
			if(buffer) {
				int a;
				for(a=0; a<hits; a++) {
					/* index was converted */
					if(base->selcol==buffer[ (4 * a) + 3 ]) baseList[baseCount] = base;
				}
			}
			else {
				int temp, dist=15;
				
				project_short(base->object->obmat[3], &base->sx);
				
				temp= abs(base->sx -mval[0]) + abs(base->sy -mval[1]);
				if(temp<dist ) baseList[baseCount] = base;
			}
			
			if(baseList[baseCount]) {
				if (baseCount < SEL_MENU_SIZE) {
					baseList[baseCount] = base;
					sprintf(str, "|%s %%x%d", base->object->id.name+2, baseCount+1);	// max ob name == 22
					strcat(menuText, str);
					baseCount++;
				}
			}
		}
	}
	
	if(baseCount<=1) return baseList[0];
	else {
		baseCount = pupmenu(menuText);
		
		if (baseCount != -1) { /* If nothing is selected then dont do anything */
			return baseList[baseCount-1];
		}
		else return NULL;
	}
}

void mouse_select(void)
{
	Base *base, *startbase=NULL, *basact=NULL, *oldbasact=NULL;
	unsigned int buffer[MAXPICKBUF];
	int temp, a, dist=100;
	short hits, mval[2];

	/* always start list from basact in wire mode */
	startbase=  FIRSTBASE;
	if(BASACT && BASACT->next) startbase= BASACT->next;

	getmouseco_areawin(mval);
	
	/* This block uses the control key to make the object selected by its centre point rather then its contents */
	if(G.obedit==0 && (G.qual & LR_CTRLKEY)) {
		
		if(G.qual & LR_ALTKEY) basact= mouse_select_menu(NULL, 0, mval);
		else {
			base= startbase;
			while(base) {
				
				if(base->lay & G.vd->lay) {
					
					project_short(base->object->obmat[3], &base->sx);
					
					temp= abs(base->sx -mval[0]) + abs(base->sy -mval[1]);
					if(base==BASACT) temp+=10;
					if(temp<dist ) {
						
						dist= temp;
						basact= base;
					}
				}
				base= base->next;
				
				if(base==0) base= FIRSTBASE;
				if(base==startbase) break;
			}
		}
	}
	else {
		hits= selectprojektie(buffer, mval[0]-7, mval[1]-7, mval[0]+7, mval[1]+7);
		if(hits==0) hits= selectprojektie(buffer, mval[0]-21, mval[1]-21, mval[0]+21, mval[1]+21);

		if(hits>0) {
			
			if(G.qual & LR_ALTKEY) basact= mouse_select_menu(buffer, hits, mval);
			else {
				static short lastmval[2]={-100, -100};
				int donearest= 0;
				
				/* define if we use solid nearest select or not */
				if(G.vd->drawtype>OB_WIRE) {
					donearest= 1;
					if( ABS(mval[0]-lastmval[0])<3 && ABS(mval[1]-lastmval[1])<3) {
						donearest= 0;
					}
				}
				lastmval[0]= mval[0]; lastmval[1]= mval[1];
				
				if(donearest) {
					unsigned int min= 0xFFFFFFFF;
					int selcol= 0, notcol=0;
					
					/* prevent not being able to select active object... */
					if(BASACT && (BASACT->flag & SELECT) && hits>1) notcol= BASACT->selcol;
					
					for(a=0; a<hits; a++) {
						/* index was converted */
						if( min > buffer[4*a+1] && notcol!=buffer[4*a+3]) {
							min= buffer[4*a+1];
							selcol= buffer[4*a+3];
						}
					}
					base= FIRSTBASE;
					while(base) {
						if(base->lay & G.vd->lay) {
							if(base->selcol==selcol) break;
						}
						base= base->next;
					}
					if(base) basact= base;
				}
				else {
					
					base= startbase;
					while(base) {
						if(base->lay & G.vd->lay) {
							for(a=0; a<hits; a++) {
								/* index was converted */
								if(base->selcol==buffer[(4*a)+3]) {
									basact= base;
								}
							}
						}
						
						if(basact) break;
						
						base= base->next;
						if(base==0) base= FIRSTBASE;
						if(base==startbase) break;
					}
				}
			}
		}
	}
	
	if(basact) {
		if(G.obedit) {
			/* only do select */
			deselectall_except(basact);
			basact->flag |= SELECT;
			draw_object_ext(basact);
		}
		else {
			oldbasact= BASACT;
			BASACT= basact;
			
			if((G.qual & LR_SHIFTKEY)==0) {
				deselectall_except(basact);
				basact->flag |= SELECT;
			}
			else {
				if(basact->flag & SELECT) {
					if(basact==oldbasact)
						basact->flag &= ~SELECT;
				}
				else basact->flag |= SELECT;
			}

			// copy
			basact->object->flag= basact->flag;
			
			if(oldbasact != basact) {
				set_active_base(basact);
			}

			// for visual speed, only in wire mode
			if(G.vd->drawtype==OB_WIRE) {
				if(oldbasact && oldbasact != basact && (oldbasact->lay & G.vd->lay)) 
					draw_object_ext(oldbasact);
				draw_object_ext(basact);
			}
			
			if(basact->object->type!=OB_MESH) {
				if(G.f & G_WEIGHTPAINT) {
					set_wpaint();	/* toggle */
				}
				if(G.f & G_VERTEXPAINT) {
					set_vpaint();	/* toggle */
				}
				if(G.f & G_FACESELECT) {
					set_faceselect();	/* toggle */
				}
			}
			/* also because multiple 3d windows can be open */
			allqueue(REDRAWVIEW3D, 0);

			allqueue(REDRAWBUTSLOGIC, 0);
			allqueue(REDRAWDATASELECT, 0);
			allqueue(REDRAWBUTSOBJECT, 0);
			allqueue(REDRAWACTION, 0);
			allqueue(REDRAWNLA, 0);
			allqueue(REDRAWTIME, 0);
			allqueue(REDRAWHEADERS, 0);	/* To force display update for the posebutton */
			
		}
		
	}

	countall();

	rightmouse_transform();	// does undo push!
}

/* ------------------------------------------------------------------------- */

static int edge_inside_circle(short centx, short centy, short rad, short x1, short y1, short x2, short y2)
{
	int radsq= rad*rad;
	float v1[2], v2[2], v3[2];
	
	// check points in circle itself
	if( (x1-centx)*(x1-centx) + (y1-centy)*(y1-centy) <= radsq ) return 1;
	if( (x2-centx)*(x2-centx) + (y2-centy)*(y2-centy) <= radsq ) return 1;
	
	// pointdistline
	v3[0]= centx;
	v3[1]= centy;
	v1[0]= x1;
	v1[1]= y1;
	v2[0]= x2;
	v2[1]= y2;
	
	if( PdistVL2Dfl(v3, v1, v2) < (float)rad ) return 1;
	
	return 0;
}


/**
 * Does the 'borderselect' command. (Select verts based on selecting with a 
 * border: key 'b'). All selecting seems to be done in the get_border part.
 */
void borderselect(void)
{
	rcti rect;
	Base *base;
	Nurb *nu;
	BezTriple *bezt;
	BPoint *bp;
	MetaElem *ml;
	unsigned int buffer[MAXPICKBUF];
	int a, index;
	short hits, val, tel;

	if(G.obedit==0 && (G.f & G_FACESELECT)) {
		face_borderselect();
		return;
	}
	setlinestyle(2);
	val= get_border(&rect, 3);
	setlinestyle(0);
	if(val) {
		if (G.obpose){
			if(G.obpose->type==OB_ARMATURE) {
				Bone	*bone;
				hits= selectprojektie(buffer, rect.xmin, rect.ymin, rect.xmax, rect.ymax);
				base= FIRSTBASE;
				for (a=0; a<hits; a++){
					index = buffer[(4*a)+3];
					if (val==LEFTMOUSE){
						if (index != -1){
							bone = get_indexed_bone(G.obpose->data, index &~(BONESEL_TIP|BONESEL_ROOT));
							bone->flag |= BONE_SELECTED;
							select_actionchannel_by_name(G.obpose->action, bone->name, 1);
						}
					}
					else{	
						if (index != -1){
							bone = get_indexed_bone(G.obpose->data, index &~(BONESEL_TIP|BONESEL_ROOT));
							bone->flag &= ~BONE_SELECTED;
							select_actionchannel_by_name(G.obpose->action, bone->name, 0);
						}
					}
				}
				
				allqueue(REDRAWBUTSEDIT, 0);
				allqueue(REDRAWBUTSOBJECT, 0);
				allqueue(REDRAWACTION, 0);
				allqueue(REDRAWNLA, 0);
				allqueue(REDRAWVIEW3D, 0);
			}
		}
		else if(G.obedit) {
			/* used to be a bigger test, also included sector and life */
			if(G.obedit->type==OB_MESH) {
				extern int em_solidoffs, em_wireoffs;	// let linker solve it... from editmesh_mods.c 
				EditMesh *em = G.editMesh;
				EditVert *eve;
				EditEdge *eed;
				EditFace *efa;
				int index, bbsel=0; // bbsel: no clip needed with screencoords
				
				bbsel= EM_init_backbuf_border(rect.xmin, rect.ymin, rect.xmax, rect.ymax);

				if(G.scene->selectmode & SCE_SELECT_VERTEX) {
					if(bbsel==0) calc_meshverts_ext();	/* clips, drawobject.c */
					index= em_wireoffs;
					for(eve= em->verts.first; eve; eve= eve->next, index++) {
						if(eve->h==0) {
							if(bbsel || (eve->xs>rect.xmin && eve->xs<rect.xmax && eve->ys>rect.ymin && eve->ys<rect.ymax)) {
								if(EM_check_backbuf_border(index)) {
									if(val==LEFTMOUSE) eve->f|= 1;
									else eve->f&= 254;
								}
							}
						}
					}
				}
				if(G.scene->selectmode & SCE_SELECT_EDGE) {
					short done= 0;
					
					calc_meshverts_ext_f2();	/* doesnt clip, drawobject.c */
					index= em_solidoffs;
					/* two stages, for nice edge select first do 'both points in rect'
					   also when bbsel is true */
					for(eed= em->edges.first; eed; eed= eed->next, index++) {
						if(eed->h==0) {
							if(edge_fully_inside_rect(rect, eed->v1->xs, eed->v1->ys, eed->v2->xs, eed->v2->ys)) {
								if(EM_check_backbuf_border(index)) {
									EM_select_edge(eed, val==LEFTMOUSE);
									done = 1;
								}
							}
						}
					}

					if(done==0) {
						index= em_solidoffs;
						for(eed= em->edges.first; eed; eed= eed->next, index++) {
							if(eed->h==0) {
								if(bbsel) {
									if(EM_check_backbuf_border(index))
										EM_select_edge(eed, val==LEFTMOUSE);
								}
								else if(edge_inside_rect(rect, eed->v1->xs, eed->v1->ys, eed->v2->xs, eed->v2->ys)) {
									EM_select_edge(eed, val==LEFTMOUSE);
								}
							}
						}
					}
				}
				
				if(G.scene->selectmode & SCE_SELECT_FACE) {
					if(bbsel==0) calc_mesh_facedots_ext();
					index= 1;
					for(efa= em->faces.first; efa; efa= efa->next, index++) {
						if(efa->h==0) {
							if(bbsel || (efa->xs>rect.xmin && efa->xs<rect.xmax && efa->ys>rect.ymin && efa->ys<rect.ymax)) {
								if(EM_check_backbuf_border(index)) {
									EM_select_face_fgon(efa, val==LEFTMOUSE);
								}
							}
						}
					}
				}
				
				EM_free_backbuf_border();
					
				EM_selectmode_flush();
				allqueue(REDRAWVIEW3D, 0);
				
			}
			else if ELEM(G.obedit->type, OB_CURVE, OB_SURF) {
				
				calc_nurbverts_ext();	/* drawobject.c */
				nu= editNurb.first;
				while(nu) {
					if((nu->type & 7)==CU_BEZIER) {
						bezt= nu->bezt;
						a= nu->pntsu;
						while(a--) {
							if(bezt->hide==0) {
								if(bezt->s[0][0]>rect.xmin && bezt->s[0][0]<rect.xmax) {
									if(bezt->s[0][1]>rect.ymin && bezt->s[0][1]<rect.ymax) {
										if(val==LEFTMOUSE) bezt->f1|= 1;
										else bezt->f1 &= ~1;
									}
								}
								if(bezt->s[1][0]>rect.xmin && bezt->s[1][0]<rect.xmax) {
									if(bezt->s[1][1]>rect.ymin && bezt->s[1][1]<rect.ymax) {
										if(val==LEFTMOUSE) {
											bezt->f1|= 1; bezt->f2|= 1; bezt->f3|= 1;
										}
										else {
											bezt->f1 &= ~1; bezt->f2 &= ~1; bezt->f3 &= ~1;
										}
									}
								}
								if(bezt->s[2][0]>rect.xmin && bezt->s[2][0]<rect.xmax) {
									if(bezt->s[2][1]>rect.ymin && bezt->s[2][1]<rect.ymax) {
										if(val==LEFTMOUSE) bezt->f3|= 1;
										else bezt->f3 &= ~1;
									}
								}
							}
							bezt++;
						}
					}
					else {
						bp= nu->bp;
						a= nu->pntsu*nu->pntsv;
						while(a--) {
							if(bp->hide==0) {
								if(bp->s[0]>rect.xmin && bp->s[0]<rect.xmax) {
									if(bp->s[1]>rect.ymin && bp->s[1]<rect.ymax) {
										if(val==LEFTMOUSE) bp->f1|= 1;
										else bp->f1 &= ~1;
									}
								}
							}
							bp++;
						}
					}
					nu= nu->next;
				}
				allqueue(REDRAWVIEW3D, 0);
			}
			else if(G.obedit->type==OB_MBALL) {
				hits= selectprojektie(buffer, rect.xmin, rect.ymin, rect.xmax, rect.ymax);
				
				ml= editelems.first;
				
				while(ml) {
					for(a=0; a<hits; a++) {
						if(ml->selcol1==buffer[ (4 * a) + 3 ]) {
							ml->flag |= MB_SCALE_RAD;
							if(val==LEFTMOUSE) ml->flag |= SELECT;
							else ml->flag &= ~SELECT;
							break;
						}
						if(ml->selcol2==buffer[ (4 * a) + 3 ]) {
							ml->flag &= ~MB_SCALE_RAD;
							if(val==LEFTMOUSE) ml->flag |= SELECT;
							else ml->flag &= ~SELECT;
							break;
						}
					}
					ml= ml->next;
				}
				allqueue(REDRAWVIEW3D, 0);
			}
			else if(G.obedit->type==OB_ARMATURE) {
				EditBone *ebone;

				hits= selectprojektie(buffer, rect.xmin, rect.ymin, rect.xmax, rect.ymax);

				base= FIRSTBASE;
				for (a=0; a<hits; a++){
					index = buffer[(4*a)+3];
					if (val==LEFTMOUSE){
						if (index!=-1){
							ebone = BLI_findlink(&G.edbo, index & ~(BONESEL_TIP|BONESEL_ROOT));
							if (index & BONESEL_TIP)
								ebone->flag |= BONE_TIPSEL;
							if (index & BONESEL_ROOT)
								ebone->flag |= BONE_ROOTSEL;
						}
					}
					else{
						if (index!=-1){
							ebone = BLI_findlink(&G.edbo, index & ~(BONESEL_TIP|BONESEL_ROOT));
							if (index & BONESEL_TIP)
								ebone->flag &= ~BONE_TIPSEL;
							if (index & BONESEL_ROOT)
								ebone->flag &= ~BONE_ROOTSEL;
						}
					}
				}
				
				allqueue(REDRAWBUTSEDIT, 0);
				allqueue(REDRAWBUTSOBJECT, 0);
				allqueue(REDRAWACTION, 0);
				allqueue(REDRAWVIEW3D, 0);
			}
			else if(G.obedit->type==OB_LATTICE) {
				
				calc_lattverts_ext();
				
				bp= editLatt->def;
	
				a= editLatt->pntsu*editLatt->pntsv*editLatt->pntsw;
				while(a--) {
					if(bp->hide==0) {
						if(bp->s[0]>rect.xmin && bp->s[0]<rect.xmax) {
							if(bp->s[1]>rect.ymin && bp->s[1]<rect.ymax) {
								if(val==LEFTMOUSE) bp->f1|= 1;
								else bp->f1 &= ~1;
							}
						}
					}
					bp++;
				}
				allqueue(REDRAWVIEW3D, 0);
			}

		}
		else {
			
			hits= selectprojektie(buffer, rect.xmin, rect.ymin, rect.xmax, rect.ymax);

			base= FIRSTBASE;
			while(base) {
				if(base->lay & G.vd->lay) {
					for(a=0; a<hits; a++) {
						/* converted index */
						if(base->selcol==buffer[ (4 * a) + 3 ]) {
							if(val==LEFTMOUSE) base->flag |= SELECT;
							else base->flag &= ~SELECT;
							base->object->flag= base->flag;

							draw_object_ext(base);
							break;
						}
					}
				}
				
				base= base->next;
			}
			/* frontbuffer flush */
			glFlush();
			
			allqueue(REDRAWDATASELECT, 0);
			
			/* because backbuf drawing */
			tel= 1;
			base= FIRSTBASE;
			while(base) {
				/* each base because of multiple windows */
				base->selcol = ((tel & 0xF00)<<12) 
					+ ((tel & 0xF0)<<8) 
					+ ((tel & 0xF)<<4);
				tel++;
				base= base->next;
			}
			/* new */
			allqueue(REDRAWBUTSLOGIC, 0);
			allqueue(REDRAWNLA, 0);
		}
		countall();
		
		allqueue(REDRAWINFO, 0);
	}

	if(val) BIF_undo_push("Border select");
	
} /* end of borderselect() */

/* ------------------------------------------------------------------------- */

/** The following functions are quick & dirty callback functions called
  * on the Circle select function (press B twice in Editmode)
  * They were torn out of the circle_select to make the latter more reusable
  * The callback version of circle_select (called circle_selectCB) was moved
  * to edit.c because of it's (wanted) generality.

	XXX These callback functions are still dirty, because they call globals... 
  */

static void mesh_selectionCB(int selecting, Object *editobj, short *mval, float rad)
{
	extern int em_solidoffs, em_wireoffs;	// let linker solve it... from editmesh_mods.c 
	EditMesh *em = G.editMesh;
	EditVert *eve;
	EditEdge *eed;
	EditFace *efa;
	float x, y, r;
	int index, bbsel=0; // if bbsel we dont clip with screencoords
	short rads= (short)(rad+1.0);
	
	bbsel= EM_init_backbuf_circle(mval[0], mval[1], rads);
	
	if(G.scene->selectmode & SCE_SELECT_VERTEX) {
		if(bbsel==0) calc_meshverts_ext();	/* drawobject.c */
		index= em_wireoffs;
		for(eve= em->verts.first; eve; eve= eve->next, index++) {
			if(eve->h==0) {
				if(bbsel) {
					if(EM_check_backbuf_border(index)) {
						if(selecting==LEFTMOUSE) eve->f|= 1;
						else eve->f&= 254;
					}
				}
				else {
					x= eve->xs-mval[0];
					y= eve->ys-mval[1];
					r= sqrt(x*x+y*y);
					if(r<=rad) {
						if(selecting==LEFTMOUSE) eve->f|= 1;
						else eve->f&= 254;
					}
				}
			}
		}
	}

	if(G.scene->selectmode & SCE_SELECT_EDGE) {
		if(bbsel==0) calc_meshverts_ext_f2();	/* doesnt clip, drawobject.c */
		index= em_solidoffs;
		for(eed= em->edges.first; eed; eed= eed->next, index++) {
			if(eed->h==0) {
				if(bbsel || edge_inside_circle(mval[0], mval[1], (short)rad, eed->v1->xs, eed->v1->ys,  eed->v2->xs, eed->v2->ys)) {
					if(EM_check_backbuf_border(index)) {
						EM_select_edge(eed, selecting==LEFTMOUSE);
					}
				}
			}
		}
	}
	
	if(G.scene->selectmode & SCE_SELECT_FACE) {
		if(bbsel==0) calc_mesh_facedots_ext();
		index= 1;
		for(efa= em->faces.first; efa; efa= efa->next, index++) {
			if(efa->h==0) {
				if(bbsel) {
					if(EM_check_backbuf_border(index)) {
						EM_select_face_fgon(efa, selecting==LEFTMOUSE);
					}
				}
				else {
					x= efa->xs-mval[0];
					y= efa->ys-mval[1];
					r= sqrt(x*x+y*y);
					if(r<=rad) {
						EM_select_face_fgon(efa, selecting==LEFTMOUSE);
					}
				}
			}
		}
	}
	EM_free_backbuf_border();
	EM_selectmode_flush();

	draw_sel_circle(0, 0, 0, 0, 0);	/* signal */
	force_draw(0);

}


static void nurbscurve_selectionCB(int selecting, Object *editobj, short *mval, float rad)
{
	Nurb *nu;
	BPoint *bp;
	BezTriple *bezt;
	float x, y, r;
	int a;

	calc_nurbverts_ext();	/* drawobject.c */
	nu= editNurb.first;
	while(nu) {
		if((nu->type & 7)==CU_BEZIER) {
			bezt= nu->bezt;
			a= nu->pntsu;
			while(a--) {
				if(bezt->hide==0) {
					x= bezt->s[0][0]-mval[0];
					y= bezt->s[0][1]-mval[1];
					r= sqrt(x*x+y*y);
					if(r<=rad) {
						if(selecting==LEFTMOUSE) bezt->f1|= 1;
						else bezt->f1 &= ~1;
					}
					x= bezt->s[1][0]-mval[0];
					y= bezt->s[1][1]-mval[1];
					r= sqrt(x*x+y*y);
					if(r<=rad) {
						if(selecting==LEFTMOUSE) bezt->f2|= 1;
						else bezt->f2 &= ~1;
					}
					x= bezt->s[2][0]-mval[0];
					y= bezt->s[2][1]-mval[1];
					r= sqrt(x*x+y*y);
					if(r<=rad) {
						if(selecting==LEFTMOUSE) bezt->f3|= 1;
						else bezt->f3 &= ~1;
					}
					
				}
				bezt++;
			}
		}
		else {
			bp= nu->bp;
			a= nu->pntsu*nu->pntsv;
			while(a--) {
				if(bp->hide==0) {
					x= bp->s[0]-mval[0];
					y= bp->s[1]-mval[1];
					r= sqrt(x*x+y*y);
					if(r<=rad) {
						if(selecting==LEFTMOUSE) bp->f1|= 1;
						else bp->f1 &= ~1;
					}
				}
				bp++;
			}
		}
		nu= nu->next;
	}
	draw_sel_circle(0, 0, 0, 0, 0);	/* signal */
	force_draw(0);


}

static void lattice_selectionCB(int selecting, Object *editobj, short *mval, float rad)
{
	BPoint *bp;
	float x, y, r;
	int a;

	calc_lattverts_ext();
	
	bp= editLatt->def;

	a= editLatt->pntsu*editLatt->pntsv*editLatt->pntsw;
	while(a--) {
		if(bp->hide==0) {
			x= bp->s[0]-mval[0];
			y= bp->s[1]-mval[1];
			r= sqrt(x*x+y*y);
			if(r<=rad) {
				if(selecting==LEFTMOUSE) bp->f1|= 1;
				else bp->f1 &= ~1;
			}
		}
		bp++;
	}
	draw_sel_circle(0, 0, 0, 0, 0);	/* signal */
	force_draw(0);
}

/** Callbacks for selection in Editmode */

void obedit_selectionCB(short selecting, Object *editobj, short *mval, float rad) 
{
	switch(editobj->type) {		
	case OB_MESH:
		mesh_selectionCB(selecting, editobj, mval, rad);
		break;
	case OB_CURVE:
	case OB_SURF:
		nurbscurve_selectionCB(selecting, editobj, mval, rad);
		break;
	case OB_LATTICE:
		lattice_selectionCB(selecting, editobj, mval, rad);
		break;
	}
}

void set_render_border(void)
{
	rcti rect;
	short val;

	if(G.vd->persp!=2) return;
	
	val= get_border(&rect, 2);
	if(val) {
		rcti vb;

		calc_viewborder(G.vd, &vb);

		G.scene->r.border.xmin= (float) (rect.xmin-vb.xmin)/(vb.xmax-vb.xmin);
		G.scene->r.border.ymin= (float) (rect.ymin-vb.ymin)/(vb.ymax-vb.ymin);
		G.scene->r.border.xmax= (float) (rect.xmax-vb.xmin)/(vb.xmax-vb.xmin);
		G.scene->r.border.ymax= (float) (rect.ymax-vb.ymin)/(vb.ymax-vb.ymin);
		
		CLAMP(G.scene->r.border.xmin, 0.0, 1.0);
		CLAMP(G.scene->r.border.ymin, 0.0, 1.0);
		CLAMP(G.scene->r.border.xmax, 0.0, 1.0);
		CLAMP(G.scene->r.border.ymax, 0.0, 1.0);
		
		allqueue(REDRAWVIEWCAM, 1);
		// if it was not set, we do this
		G.scene->r.mode |= R_BORDER;
		allqueue(REDRAWBUTSSCENE, 1);
	}
}



void fly(void)
{
	float speed=0.0, speedo=1.0, zspeed=0.0, dvec[3], *quat, mat[3][3];
	float oldvec[3], oldrot[3];
	int loop=1;
	unsigned short toets;
	short val, cent[2];
	short mval[2];
	
	if(curarea->spacetype!=SPACE_VIEW3D) return;
	if(G.vd->camera == 0) return;
	if(G.vd->persp<2) return;
	
	VECCOPY(oldvec, G.vd->camera->loc);
	VECCOPY(oldrot, G.vd->camera->rot);
	
	cent[0]= curarea->winrct.xmin+(curarea->winx)/2;
	cent[1]= curarea->winrct.ymin+(curarea->winy)/2;
	
	warp_pointer(cent[0], cent[1]);
	
	/* we have to rely on events to give proper mousecoords after a warp_pointer */
	mval[0]= cent[0]=  (curarea->winx)/2;
	mval[1]= cent[1]=  (curarea->winy)/2;
	
	headerprint("Fly");
	
	while(loop) {
		

		while(qtest()) {
			
			toets= extern_qread(&val);
			
			if(val) {
				if(toets==MOUSEY) getmouseco_areawin(mval);
				else if(toets==ESCKEY) {
					VECCOPY(G.vd->camera->loc, oldvec);
					VECCOPY(G.vd->camera->rot, oldrot);
					loop= 0;
					break;
				}
				else if(toets==SPACEKEY) {
					loop= 0;
					BIF_undo_push("Fly camera");
					break;
				}
				else if(toets==LEFTMOUSE) {
					speed+= G.vd->grid/75.0;
					if(get_mbut()&M_MOUSE) speed= 0.0;
				}
				else if(toets==MIDDLEMOUSE) {
					speed-= G.vd->grid/75.0;
					if(get_mbut()&L_MOUSE) speed= 0.0;
				}
			}
		}
		if(loop==0) break;
		
		/* define dvec */
		val= mval[0]-cent[0];
		if(val>20) val-= 20; else if(val< -20) val+= 20; else val= 0;
		dvec[0]= 0.000001*val*val;
		if(val>0) dvec[0]= -dvec[0];
		
		val= mval[1]-cent[1];
		if(val>20) val-= 20; else if(val< -20) val+= 20; else val= 0;
		dvec[1]= 0.000001*val*val;
		if(val>0) dvec[1]= -dvec[1];
		
		dvec[2]= 1.0;
		
		zspeed= 0.0;
		if(get_qual()&LR_CTRLKEY) zspeed= -G.vd->grid/25.0;
		if(get_qual()&LR_ALTKEY) zspeed= G.vd->grid/25.0;
		
		if(speedo!=0.0 || zspeed!=0.0 || dvec[0]!=0.0 || dvec[1]!=0.0) {
		
			Normalise(dvec);
			
			Mat3CpyMat4(mat, G.vd->viewinv);
			Mat3MulVecfl(mat, dvec);
			quat= vectoquat(dvec, 5, 1);	/* track and upflag, not from the base: camera view calculation does not use that */
			
			QuatToEul(quat, G.vd->camera->rot);
			
			compatible_eul(G.vd->camera->rot, oldrot);
			
			VecMulf(dvec, speed);
			G.vd->camera->loc[0]-= dvec[0];
			G.vd->camera->loc[1]-= dvec[1];
			G.vd->camera->loc[2]-= (dvec[2]-zspeed);
			
			scrarea_do_windraw(curarea);
			screen_swapbuffers();
		}
		speedo= speed;
	}
	
	allqueue(REDRAWVIEW3D, 0);
	scrarea_queue_headredraw(curarea);
	
}