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b58f7d0c554e536d4e70e9ccf06fb2e5d38a34f4
blender-archive/source/blender/src/transform_manipulator.c
Daniel Dunbar b58f7d0c55 - change mesh_get_derived_render to mesh_create_derived_render (always 
builds new DerivedMesh... caching can come later)
 - split DerivedMesh returning functions into editmesh and mesh groups
 - got rid of DL_NORS displist type (get built on fly for mesh when
   needed)
 - got rid of Mesh.disp (yay!)
 - started to punch DerivedMesh returning functions into shape to introduce
   modifier stack
2005-07-19 00:21:01 +00:00

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/**
* $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) 2005 Blender Foundation
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL/BL DUAL LICENSE BLOCK *****
*/
#include <stdlib.h>
#include <string.h>
#include <math.h>
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifndef WIN32
#include <unistd.h>
#else
#include <io.h>
#endif
#include "MEM_guardedalloc.h"
#include "DNA_armature_types.h"
#include "DNA_action_types.h"
#include "DNA_curve_types.h"
#include "DNA_lattice_types.h"
#include "DNA_mesh_types.h"
#include "DNA_meta_types.h"
#include "DNA_object_types.h"
#include "DNA_screen_types.h"
#include "DNA_scene_types.h"
#include "DNA_space_types.h"
#include "DNA_userdef_types.h"
#include "DNA_view3d_types.h"
#include "BKE_armature.h"
#include "BKE_DerivedMesh.h"
#include "BKE_global.h"
#include "BKE_lattice.h"
#include "BKE_object.h"
#include "BKE_utildefines.h"
#include "BLI_arithb.h"
#include "BLI_editVert.h"
#include "BIF_editarmature.h"
#include "BIF_gl.h"
#include "BIF_mywindow.h"
#include "BIF_resources.h"
#include "BIF_screen.h"
#include "BIF_space.h"
#include "BIF_transform.h"
#include "BSE_edit.h"
#include "BSE_view.h"
#include "BDR_drawobject.h"
#include "blendef.h"
#include "transform.h"
/* return codes for select, and drawing flags */
#define MAN_TRANS_X 1
#define MAN_TRANS_Y 2
#define MAN_TRANS_Z 4
#define MAN_TRANS_C 7
#define MAN_ROT_X 8
#define MAN_ROT_Y 16
#define MAN_ROT_Z 32
#define MAN_ROT_V 64
#define MAN_ROT_T 128
#define MAN_ROT_C 248
#define MAN_SCALE_X 256
#define MAN_SCALE_Y 512
#define MAN_SCALE_Z 1024
#define MAN_SCALE_C 1792
/* color codes */
#define MAN_RGB 0
#define MAN_GHOST 1
#define MAN_MOVECOL 2
/* GLOBAL VARIABLE THAT SHOULD MOVED TO SCREEN MEMBER OR SOMETHING */
extern TransInfo Trans;
static int is_mat4_flipped(float mat[][4])
{
float vec[3];
Crossf(vec, mat[0], mat[1]);
if( Inpf(vec, mat[2]) < 0.0 ) return 1;
return 0;
}
/* transform widget center calc helper for below */
static void calc_tw_center(float *co)
{
float *twcent= G.scene->twcent;
float *min= G.scene->twmin;
float *max= G.scene->twmax;
DO_MINMAX(co, min, max);
VecAddf(twcent, twcent, co);
}
/* for pose mode */
static void stats_pose(bPoseChannel *pchan, float *normal, float *plane)
{
Bone *bone= pchan->bone;
if(bone) {
if (bone->flag & BONE_TRANSFORM) {
calc_tw_center(pchan->pose_head);
VecAddf(normal, normal, pchan->pose_mat[2]);
VecAddf(plane, plane, pchan->pose_mat[1]);
}
}
}
/* centroid, boundbox, of selection */
/* returns total items selected */
int calc_manipulator_stats(ScrArea *sa)
{
extern ListBase editNurb;
View3D *v3d= sa->spacedata.first;
Base *base;
Object *ob=NULL;
float normal[3]={0.0, 0.0, 0.0};
float plane[3]={0.0, 0.0, 0.0};
int a, totsel=0;
/* transform widget matrix */
Mat4One(v3d->twmat);
/* transform widget centroid/center */
G.scene->twcent[0]= G.scene->twcent[1]= G.scene->twcent[2]= 0.0f;
INIT_MINMAX(G.scene->twmin, G.scene->twmax);
if(G.obedit) {
ob= G.obedit;
if((ob->lay & G.vd->lay)==0) return 0;
if(G.obedit->type==OB_MESH) {
int dmNeedsFree;
DerivedMesh *dm = editmesh_get_derived_cage(&dmNeedsFree);
EditMesh *em = G.editMesh;
EditVert *eve;
float vec[3];
int no_faces= 1;
if(v3d->twmode == V3D_MANIP_NORMAL) {
EditFace *efa;
for(efa= em->faces.first; efa; efa= efa->next) {
if(efa->f & SELECT) {
no_faces= 0;
VECADD(normal, normal, efa->n);
VecSubf(vec, efa->v2->co, efa->v1->co);
VECADD(plane, plane, vec);
}
}
}
/* do vertices for center, and if still no normal found, use vertex normals */
for(eve= em->verts.first; eve; eve= eve->next) {
if(eve->f & SELECT) {
if(no_faces) VECADD(normal, normal, eve->no);
totsel++;
dm->getMappedVertCoEM(dm, eve, vec);
calc_tw_center(vec);
}
}
/* the edge case... */
if(no_faces && v3d->twmode == V3D_MANIP_NORMAL) {
EditEdge *eed;
for(eed= em->edges.first; eed; eed= eed->next) {
if(eed->f & SELECT) {
/* ok we got an edge, only use one, and as normal */
VECCOPY(plane, normal);
VecSubf(normal, eed->v2->co, eed->v1->co);
break;
}
}
}
if (dmNeedsFree) {
dm->release(dm);
}
}
else if (G.obedit->type==OB_ARMATURE){
EditBone *ebo;
for (ebo=G.edbo.first;ebo;ebo=ebo->next){
// If this is an IK child and it's parent is being moved, don't count as selected
if ((ebo->flag & BONE_IK_TOPARENT)&& (ebo->flag & BONE_ROOTSEL) && ebo->parent && (ebo->parent->flag & BONE_TIPSEL));
else {
if (ebo->flag & BONE_TIPSEL) {
calc_tw_center(ebo->tail);
totsel++;
}
if (ebo->flag & BONE_ROOTSEL) {
calc_tw_center(ebo->head);
totsel++;
}
}
}
}
else if ELEM3(G.obedit->type, OB_CURVE, OB_SURF, OB_FONT) {
Nurb *nu;
BezTriple *bezt;
BPoint *bp;
nu= editNurb.first;
while(nu) {
if((nu->type & 7)==CU_BEZIER) {
bezt= nu->bezt;
a= nu->pntsu;
while(a--) {
if(bezt->f1) {
calc_tw_center(bezt->vec[0]);
totsel++;
}
if(bezt->f2) {
calc_tw_center(bezt->vec[1]);
totsel++;
}
if(bezt->f3) {
calc_tw_center(bezt->vec[2]);
totsel++;
}
bezt++;
}
}
else {
bp= nu->bp;
a= nu->pntsu*nu->pntsv;
while(a--) {
if(bp->f1 & 1) {
calc_tw_center(bp->vec);
totsel++;
}
bp++;
}
}
nu= nu->next;
}
}
else if(G.obedit->type==OB_MBALL) {
/* editmball.c */
extern ListBase editelems; /* go away ! */
MetaElem *ml, *ml_sel=NULL;
ml= editelems.first;
while(ml) {
if(ml->flag & SELECT) {
calc_tw_center(&ml->x);
ml_sel = ml;
totsel++;
}
ml= ml->next;
}
/* normal manipulator */
if(totsel==1){
float mat1[4][4];
/* Rotation of MetaElem is stored in quat */
QuatToMat4(ml_sel->quat, mat1);
/* Translation of MetaElem */
mat1[3][0]= ml_sel->x;
mat1[3][1]= ml_sel->y;
mat1[3][2]= ml_sel->z;
VECCOPY(normal, mat1[2]);
VECCOPY(plane, mat1[1]);
VecMulf(plane, -1.0);
}
}
else if(G.obedit->type==OB_LATTICE) {
BPoint *bp;
bp= editLatt->def;
a= editLatt->pntsu*editLatt->pntsv*editLatt->pntsw;
while(a--) {
if(bp->f1 & 1) {
calc_tw_center(bp->vec);
totsel++;
}
bp++;
}
}
/* selection center */
if(totsel) {
VecMulf(G.scene->twcent, 1.0f/(float)totsel); // centroid!
Mat4MulVecfl(G.obedit->obmat, G.scene->twcent);
Mat4MulVecfl(G.obedit->obmat, G.scene->twmin);
Mat4MulVecfl(G.obedit->obmat, G.scene->twmax);
}
}
else if(G.obpose) {
bArmature *arm= G.obpose->data;
bPoseChannel *pchan;
ob= G.obpose;
if((ob->lay & G.vd->lay)==0) return 0;
Trans.mode= TFM_ROTATION; // mislead counting bones... bah
/* count total, we use same method as transform will do */
Trans.total= 0;
count_bone_select(&Trans, &arm->bonebase, 1);
totsel= Trans.total;
if(totsel) {
/* use channels to get stats */
for(pchan= ob->pose->chanbase.first; pchan; pchan= pchan->next) {
stats_pose(pchan, normal, plane);
}
//VecMulf(normal, -1.0);
VecMulf(plane, -1.0);
VecMulf(G.scene->twcent, 1.0f/(float)totsel); // centroid!
Mat4MulVecfl(G.obpose->obmat, G.scene->twcent);
Mat4MulVecfl(G.obpose->obmat, G.scene->twmin);
Mat4MulVecfl(G.obpose->obmat, G.scene->twmax);
}
}
else if(G.f & (G_FACESELECT + G_VERTEXPAINT + G_TEXTUREPAINT +G_WEIGHTPAINT)) {
;
}
else {
/* we need the one selected object, if its not active */
ob= OBACT;
if(ob && !(ob->flag & SELECT)) ob= NULL;
base= (G.scene->base.first);
while(base) {
if TESTBASELIB(base) {
if(ob==NULL) ob= base->object;
calc_tw_center(base->object->obmat[3]);
totsel++;
}
base= base->next;
}
/* selection center */
if(totsel) {
VecMulf(G.scene->twcent, 1.0f/(float)totsel); // centroid!
}
}
/* global, local or normal orientation? */
if(ob && totsel) {
switch(v3d->twmode) {
case V3D_MANIP_GLOBAL:
break;
case V3D_MANIP_NORMAL:
if(G.obedit || G.obpose) {
if(normal[0]!=0.0 || normal[1]!=0.0 || normal[2]!=0.0) {
float imat[3][3], mat[3][3];
/* we need the transpose of the inverse for a normal... */
Mat3CpyMat4(imat, ob->obmat);
Mat3Inv(mat, imat);
Mat3Transp(mat);
Mat3MulVecfl(mat, normal);
Mat3MulVecfl(mat, plane);
Normalise(normal);
if(0.0==Normalise(plane)) VECCOPY(plane, mat[1]);
VECCOPY(mat[2], normal);
Crossf(mat[0], normal, plane);
Crossf(mat[1], mat[2], mat[0]);
Mat4CpyMat3(v3d->twmat, mat);
Mat4Ortho(v3d->twmat);
break;
}
}
/* no break we define 'normal' as 'local' in Object mode */
case V3D_MANIP_LOCAL:
if(totsel==1 || v3d->around==V3D_LOCAL || G.obedit || G.obpose) {
Mat4CpyMat4(v3d->twmat, ob->obmat);
Mat4Ortho(v3d->twmat);
}
break;
}
}
return totsel;
}
/* ******************** DRAWING STUFFIES *********** */
static float screen_aligned(float mat[][4])
{
float vec[3], size;
VECCOPY(vec, mat[0]);
size= Normalise(vec);
glTranslatef(mat[3][0], mat[3][1], mat[3][2]);
/* sets view screen aligned */
glRotatef( -360.0f*saacos(G.vd->viewquat[0])/(float)M_PI, G.vd->viewquat[1], G.vd->viewquat[2], G.vd->viewquat[3]);
return size;
}
/* radring = radius of donut rings
radhole = radius hole
start = starting segment (based on nrings)
end = end segment
nsides = amount of points in ring
nrigns = amount of rings
*/
static void partial_donut(float radring, float radhole, int start, int end, int nsides, int nrings)
{
float theta, phi, theta1;
float cos_theta, sin_theta;
float cos_theta1, sin_theta1;
float ring_delta, side_delta;
int i, j, docaps= 1;
if(start==0 && end==nrings) docaps= 0;
ring_delta= 2.0f*(float)M_PI/(float)nrings;
side_delta= 2.0f*(float)M_PI/(float)nsides;
theta= (float)M_PI+0.5f*ring_delta;
cos_theta= (float)cos(theta);
sin_theta= (float)sin(theta);
for(i= nrings - 1; i >= 0; i--) {
theta1= theta + ring_delta;
cos_theta1= (float)cos(theta1);
sin_theta1= (float)sin(theta1);
if(docaps && i==start) { // cap
glBegin(GL_POLYGON);
phi= 0.0;
for(j= nsides; j >= 0; j--) {
float cos_phi, sin_phi, dist;
phi += side_delta;
cos_phi= (float)cos(phi);
sin_phi= (float)sin(phi);
dist= radhole + radring * cos_phi;
glVertex3f(cos_theta1 * dist, -sin_theta1 * dist, radring * sin_phi);
}
glEnd();
}
if(i>=start && i<=end) {
glBegin(GL_QUAD_STRIP);
phi= 0.0;
for(j= nsides; j >= 0; j--) {
float cos_phi, sin_phi, dist;
phi += side_delta;
cos_phi= (float)cos(phi);
sin_phi= (float)sin(phi);
dist= radhole + radring * cos_phi;
glVertex3f(cos_theta1 * dist, -sin_theta1 * dist, radring * sin_phi);
glVertex3f(cos_theta * dist, -sin_theta * dist, radring * sin_phi);
}
glEnd();
}
if(docaps && i==end) { // cap
glBegin(GL_POLYGON);
phi= 0.0;
for(j= nsides; j >= 0; j--) {
float cos_phi, sin_phi, dist;
phi -= side_delta;
cos_phi= (float)cos(phi);
sin_phi= (float)sin(phi);
dist= radhole + radring * cos_phi;
glVertex3f(cos_theta * dist, -sin_theta * dist, radring * sin_phi);
}
glEnd();
}
theta= theta1;
cos_theta= cos_theta1;
sin_theta= sin_theta1;
}
}
/* three colors can be set;
grey for ghosting
moving: in transform theme color
else the red/green/blue
*/
static void manipulator_setcolor(char axis, int colcode)
{
float vec[4];
char col[4];
vec[3]= 0.7f; // alpha set on 0.5, can be glEnabled or not
if(colcode==MAN_GHOST) {
glColor4ub(0, 0, 0, 70);
}
else if(colcode==MAN_MOVECOL) {
BIF_GetThemeColor3ubv(TH_TRANSFORM, col);
glColor4ub(col[0], col[1], col[2], 128);
}
else {
switch(axis) {
case 'c':
BIF_GetThemeColor3ubv(TH_TRANSFORM, col);
if(G.vd->twmode == V3D_MANIP_LOCAL) {
col[0]= col[0]>200?255:col[0]+55;
col[1]= col[1]>200?255:col[1]+55;
col[2]= col[2]>200?255:col[2]+55;
}
else if(G.vd->twmode == V3D_MANIP_NORMAL) {
col[0]= col[0]<55?0:col[0]-55;
col[1]= col[1]<55?0:col[1]-55;
col[2]= col[2]<55?0:col[2]-55;
}
glColor4ub(col[0], col[1], col[2], 128);
break;
case 'x':
glColor4ub(220, 0, 0, 128);
break;
case 'y':
glColor4ub(0, 220, 0, 128);
break;
case 'z':
glColor4ub(30, 30, 220, 128);
break;
}
}
}
/* viewmatrix should have been set OK, also no shademode! */
static void draw_manipulator_axes(int colcode, int flagx, int flagy, int flagz)
{
/* axes */
if(flagx) {
manipulator_setcolor('x', colcode);
if(flagx & MAN_SCALE_X) glLoadName(MAN_SCALE_X);
else if(flagx & MAN_TRANS_X) glLoadName(MAN_TRANS_X);
glBegin(GL_LINES);
glVertex3f(0.2, 0.0, 0.0);
glVertex3f(1.0, 0.0, 0.0);
glEnd();
}
if(flagy) {
if(flagy & MAN_SCALE_Y) glLoadName(MAN_SCALE_Y);
else if(flagy & MAN_TRANS_Y) glLoadName(MAN_TRANS_Y);
manipulator_setcolor('y', colcode);
glBegin(GL_LINES);
glVertex3f(0.0, 0.2, 0.0);
glVertex3f(0.0, 1.0, 0.0);
glEnd();
}
if(flagz) {
if(flagz & MAN_SCALE_Z) glLoadName(MAN_SCALE_Z);
else if(flagz & MAN_TRANS_Z) glLoadName(MAN_TRANS_Z);
manipulator_setcolor('z', colcode);
glBegin(GL_LINES);
glVertex3f(0.0, 0.0, 0.2);
glVertex3f(0.0, 0.0, 1.0);
glEnd();
}
}
/* only called while G.moving */
static void draw_manipulator_rotate_ghost(float mat[][4], int drawflags)
{
GLUquadricObj *qobj= gluNewQuadric();
float size, phi, startphi, vec[3], svec[3], matt[4][4], cross[3], tmat[3][3];
int arcs= (G.rt!=2);
glDisable(GL_DEPTH_TEST);
gluQuadricDrawStyle(qobj, GLU_FILL);
glColor4ub(0,0,0,64);
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
/* we need both [4][4] transforms, Trans.mat seems to be premul, not post for mat[][4] */
Mat4CpyMat4(matt, mat); // to copy the parts outside of [3][3]
Mat4MulMat34(matt, Trans.mat, mat);
/* Screen aligned view rot circle */
if(drawflags & MAN_ROT_V) {
/* prepare for screen aligned draw */
glPushMatrix();
size= screen_aligned(mat);
vec[0]= (float)(Trans.con.imval[0] - Trans.center2d[0]);
vec[1]= (float)(Trans.con.imval[1] - Trans.center2d[1]);
vec[2]= 0.0f;
Normalise(vec);
startphi= saacos( vec[1] );
if(vec[0]<0.0) startphi= -startphi;
phi= (float)fmod(180.0*Trans.val/M_PI, 360.0);
if(phi > 180.0) phi-= 360.0;
else if(phi<-180.0) phi+= 360.0;
gluPartialDisk(qobj, 0.0, size, 32, 1, 180.0*startphi/M_PI, phi);
glPopMatrix();
}
else if(arcs) {
float imat[3][3], ivmat[3][3];
/* try to get the start rotation */
svec[0]= (float)(Trans.con.imval[0] - Trans.center2d[0]);
svec[1]= (float)(Trans.con.imval[1] - Trans.center2d[1]);
svec[2]= 0.0f;
/* screen aligned vec transform back to manipulator space */
Mat3CpyMat4(ivmat, G.vd->viewinv);
Mat3CpyMat4(tmat, mat);
Mat3Inv(imat, tmat);
Mat3MulMat3(tmat, imat, ivmat);
Mat3MulVecfl(tmat, svec); // tmat is used further on
Normalise(svec);
}
mymultmatrix(mat); // aligns with original widget
/* Z disk */
if(drawflags & MAN_ROT_Z) {
if(arcs) {
/* correct for squeezed arc */
svec[0]+= tmat[2][0];
svec[1]+= tmat[2][1];
Normalise(svec);
startphi= atan2(svec[0], svec[1]);
}
else startphi= 0.5*M_PI;
VECCOPY(vec, mat[0]); // use x axis to detect rotation
Normalise(vec);
Normalise(matt[0]);
phi= saacos( Inpf(vec, matt[0]) );
if(phi!=0.0) {
Crossf(cross, vec, matt[0]); // results in z vector
if(Inpf(cross, mat[2]) > 0.0) phi= -phi;
gluPartialDisk(qobj, 0.0, 1.0, 32, 1, 180.0*startphi/M_PI, 180.0*(phi)/M_PI);
}
}
/* X disk */
if(drawflags & MAN_ROT_X) {
if(arcs) {
/* correct for squeezed arc */
svec[1]+= tmat[2][1];
svec[2]+= tmat[2][2];
Normalise(svec);
startphi= M_PI + atan2(svec[2], -svec[1]);
}
else startphi= 0.0;
VECCOPY(vec, mat[1]); // use y axis to detect rotation
Normalise(vec);
Normalise(matt[1]);
phi= saacos( Inpf(vec, matt[1]) );
if(phi!=0.0) {
Crossf(cross, vec, matt[1]); // results in x vector
if(Inpf(cross, mat[0]) > 0.0) phi= -phi;
glRotatef(90.0, 0.0, 1.0, 0.0);
gluPartialDisk(qobj, 0.0, 1.0, 32, 1, 180.0*startphi/M_PI, 180.0*phi/M_PI);
glRotatef(-90.0, 0.0, 1.0, 0.0);
}
}
/* Y circle */
if(drawflags & MAN_ROT_Y) {
if(arcs) {
/* correct for squeezed arc */
svec[0]+= tmat[2][0];
svec[2]+= tmat[2][2];
Normalise(svec);
startphi= M_PI + atan2(-svec[0], svec[2]);
}
else startphi= M_PI;
VECCOPY(vec, mat[2]); // use z axis to detect rotation
Normalise(vec);
Normalise(matt[2]);
phi= saacos( Inpf(vec, matt[2]) );
if(phi!=0.0) {
Crossf(cross, vec, matt[2]); // results in y vector
if(Inpf(cross, mat[1]) > 0.0) phi= -phi;
glRotatef(-90.0, 1.0, 0.0, 0.0);
gluPartialDisk(qobj, 0.0, 1.0, 32, 1, 180.0*startphi/M_PI, 180.0*phi/M_PI);
glRotatef(90.0, 1.0, 0.0, 0.0);
}
}
glDisable(GL_BLEND);
myloadmatrix(G.vd->viewmat);
}
static void draw_manipulator_rotate(float mat[][4], int moving, int drawflags, int combo)
{
GLUquadricObj *qobj= gluNewQuadric();
double plane[4];
float size, vec[3], unitmat[4][4];
float cywid= 0.33f*0.01f*(float)U.tw_handlesize;
float cusize= cywid*0.65f;
int arcs= (G.rt!=2);
int colcode;
if(moving) colcode= MAN_MOVECOL;
else colcode= MAN_RGB;
/* when called while moving in mixed mode, do not draw when... */
if((drawflags & MAN_ROT_C)==0) return;
/* Init stuff */
glDisable(GL_DEPTH_TEST);
Mat4One(unitmat);
gluQuadricDrawStyle(qobj, GLU_FILL);
/* prepare for screen aligned draw */
VECCOPY(vec, mat[0]);
size= Normalise(vec);
glPushMatrix();
glTranslatef(mat[3][0], mat[3][1], mat[3][2]);
if(arcs) {
/* clipplane makes nice handles, calc here because of multmatrix but with translate! */
VECCOPY(plane, G.vd->viewinv[2]);
plane[3]= -0.02*size; // clip just a bit more
glClipPlane(GL_CLIP_PLANE0, plane);
}
/* sets view screen aligned */
glRotatef( -360.0f*saacos(G.vd->viewquat[0])/(float)M_PI, G.vd->viewquat[1], G.vd->viewquat[2], G.vd->viewquat[3]);
/* Screen aligned help circle */
if(arcs) {
if((G.f & G_PICKSEL)==0) {
BIF_ThemeColorShade(TH_BACK, -30);
drawcircball(GL_LINE_LOOP, unitmat[3], size, unitmat);
}
}
/* Screen aligned view rot circle */
if(drawflags & MAN_ROT_V) {
if(G.f & G_PICKSEL) glLoadName(MAN_ROT_V);
BIF_ThemeColor(TH_TRANSFORM);
drawcircball(GL_LINE_LOOP, unitmat[3], 1.2f*size, unitmat);
if(moving) {
float vec[3];
vec[0]= (float)(Trans.imval[0] - Trans.center2d[0]);
vec[1]= (float)(Trans.imval[1] - Trans.center2d[1]);
vec[2]= 0.0f;
Normalise(vec);
VecMulf(vec, 1.2f*size);
glBegin(GL_LINES);
glVertex3f(0.0f, 0.0f, 0.0f);
glVertex3fv(vec);
glEnd();
}
}
glPopMatrix();
/* apply the transform delta */
if(moving) {
float matt[4][4];
Mat4CpyMat4(matt, mat); // to copy the parts outside of [3][3]
Mat4MulMat34(matt, Trans.mat, mat);
mymultmatrix(matt);
glFrontFace( is_mat4_flipped(matt)?GL_CW:GL_CCW);
}
else {
glFrontFace( is_mat4_flipped(mat)?GL_CW:GL_CCW);
mymultmatrix(mat);
}
/* axes */
if(arcs==0) {
if(!(G.f & G_PICKSEL)) {
if( (combo & V3D_MANIP_SCALE)==0) {
/* axis */
glBegin(GL_LINES);
if( (drawflags & MAN_ROT_X) || (moving && (drawflags & MAN_ROT_Z)) ) {
manipulator_setcolor('x', colcode);
glVertex3f(0.2, 0.0, 0.0);
glVertex3f(1.0, 0.0, 0.0);
}
if( (drawflags & MAN_ROT_Y) || (moving && (drawflags & MAN_ROT_X)) ) {
manipulator_setcolor('y', colcode);
glVertex3f(0.0, 0.2, 0.0);
glVertex3f(0.0, 1.0, 0.0);
}
if( (drawflags & MAN_ROT_Z) || (moving && (drawflags & MAN_ROT_Y)) ) {
manipulator_setcolor('z', colcode);
glVertex3f(0.0, 0.0, 0.2);
glVertex3f(0.0, 0.0, 1.0);
}
glEnd();
}
}
}
if(arcs==0 && moving) {
if(arcs) glEnable(GL_CLIP_PLANE0);
/* Z circle */
if(drawflags & MAN_ROT_Z) {
if(G.f & G_PICKSEL) glLoadName(MAN_ROT_Z);
manipulator_setcolor('z', colcode);
drawcircball(GL_LINE_LOOP, unitmat[3], 1.0, unitmat);
}
/* X circle */
if(drawflags & MAN_ROT_X) {
if(G.f & G_PICKSEL) glLoadName(MAN_ROT_X);
glRotatef(90.0, 0.0, 1.0, 0.0);
manipulator_setcolor('x', colcode);
drawcircball(GL_LINE_LOOP, unitmat[3], 1.0, unitmat);
glRotatef(-90.0, 0.0, 1.0, 0.0);
}
/* Y circle */
if(drawflags & MAN_ROT_Y) {
if(G.f & G_PICKSEL) glLoadName(MAN_ROT_Y);
glRotatef(-90.0, 1.0, 0.0, 0.0);
manipulator_setcolor('y', colcode);
drawcircball(GL_LINE_LOOP, unitmat[3], 1.0, unitmat);
glRotatef(90.0, 1.0, 0.0, 0.0);
}
if(arcs) glDisable(GL_CLIP_PLANE0);
}
// donut arcs
if(arcs) {
glEnable(GL_CLIP_PLANE0);
/* Z circle */
if(drawflags & MAN_ROT_Z) {
if(G.f & G_PICKSEL) glLoadName(MAN_ROT_Z);
manipulator_setcolor('z', colcode);
partial_donut(cusize/4.0f, 1.0f, 0, 48, 8, 48);
}
/* X circle */
if(drawflags & MAN_ROT_X) {
if(G.f & G_PICKSEL) glLoadName(MAN_ROT_X);
glRotatef(90.0, 0.0, 1.0, 0.0);
manipulator_setcolor('x', colcode);
partial_donut(cusize/4.0f, 1.0f, 0, 48, 8, 48);
glRotatef(-90.0, 0.0, 1.0, 0.0);
}
/* Y circle */
if(drawflags & MAN_ROT_Y) {
if(G.f & G_PICKSEL) glLoadName(MAN_ROT_Y);
glRotatef(-90.0, 1.0, 0.0, 0.0);
manipulator_setcolor('y', colcode);
partial_donut(cusize/4.0f, 1.0f, 0, 48, 8, 48);
glRotatef(90.0, 1.0, 0.0, 0.0);
}
glDisable(GL_CLIP_PLANE0);
}
if(arcs==0) {
/* Z handle on X axis */
if(drawflags & MAN_ROT_Z) {
glPushMatrix();
if(G.f & G_PICKSEL) glLoadName(MAN_ROT_Z);
manipulator_setcolor('z', colcode);
partial_donut(0.7*cusize, 1.0, 31, 33, 8, 64);
glPopMatrix();
}
/* Y handle on X axis */
if(drawflags & MAN_ROT_Y) {
glPushMatrix();
if(G.f & G_PICKSEL) glLoadName(MAN_ROT_Y);
manipulator_setcolor('y', colcode);
glRotatef(90.0, 1.0, 0.0, 0.0);
glRotatef(90.0, 0.0, 0.0, 1.0);
partial_donut(0.7*cusize, 1.0, 31, 33, 8, 64);
glPopMatrix();
}
/* X handle on Z axis */
if(drawflags & MAN_ROT_X) {
glPushMatrix();
if(G.f & G_PICKSEL) glLoadName(MAN_ROT_X);
manipulator_setcolor('x', colcode);
glRotatef(-90.0, 0.0, 1.0, 0.0);
glRotatef(90.0, 0.0, 0.0, 1.0);
partial_donut(0.7*cusize, 1.0, 31, 33, 8, 64);
glPopMatrix();
}
}
/* restore */
myloadmatrix(G.vd->viewmat);
gluDeleteQuadric(qobj);
if(G.vd->zbuf) glEnable(GL_DEPTH_TEST);
}
static void draw_manipulator_scale(float mat[][4], int moving, int drawflags, int combo, int colcode)
{
float cywid= 0.25f*0.01f*(float)U.tw_handlesize;
float cusize= cywid*0.75f, dz;
/* when called while moving in mixed mode, do not draw when... */
if((drawflags & MAN_SCALE_C)==0) return;
glDisable(GL_DEPTH_TEST);
/* not in combo mode */
if( (combo & (V3D_MANIP_TRANSLATE|V3D_MANIP_ROTATE))==0) {
float size, unitmat[4][4];
/* center circle, do not add to selection when shift is pressed (planar constraint) */
if( (G.f & G_PICKSEL) && (G.qual & LR_SHIFTKEY)==0) glLoadName(MAN_SCALE_C);
manipulator_setcolor('c', colcode);
glPushMatrix();
size= screen_aligned(mat);
Mat4One(unitmat);
drawcircball(GL_LINE_LOOP, unitmat[3], 0.2*size, unitmat);
glPopMatrix();
dz= 1.0;
}
else dz= 1.0f-4.0f*cusize;
if(moving) {
float matt[4][4];
Mat4CpyMat4(matt, mat); // to copy the parts outside of [3][3]
Mat4MulMat34(matt, Trans.mat, mat);
mymultmatrix(matt);
glFrontFace( is_mat4_flipped(matt)?GL_CW:GL_CCW);
}
else {
mymultmatrix(mat);
glFrontFace( is_mat4_flipped(mat)?GL_CW:GL_CCW);
}
/* axis */
/* in combo mode, this is always drawn as first type */
draw_manipulator_axes(colcode, drawflags & MAN_SCALE_X, drawflags & MAN_SCALE_Y, drawflags & MAN_SCALE_Z);
/* Z cube */
glTranslatef(0.0, 0.0, dz);
if(drawflags & MAN_SCALE_Z) {
if(G.f & G_PICKSEL) glLoadName(MAN_SCALE_Z);
manipulator_setcolor('z', colcode);
drawsolidcube(cusize);
}
/* X cube */
glTranslatef(dz, 0.0, -dz);
if(drawflags & MAN_SCALE_X) {
if(G.f & G_PICKSEL) glLoadName(MAN_SCALE_X);
manipulator_setcolor('x', colcode);
drawsolidcube(cusize);
}
/* Y cube */
glTranslatef(-dz, dz, 0.0);
if(drawflags & MAN_SCALE_Y) {
if(G.f & G_PICKSEL) glLoadName(MAN_SCALE_Y);
manipulator_setcolor('y', colcode);
drawsolidcube(cusize);
}
/* if shiftkey, center point as last, for selectbuffer order */
if(G.f & G_PICKSEL) {
if(G.qual & LR_SHIFTKEY) {
glTranslatef(0.0, -dz, 0.0);
glLoadName(MAN_SCALE_C);
glBegin(GL_POINTS);
glVertex3f(0.0, 0.0, 0.0);
glEnd();
}
}
/* restore */
myloadmatrix(G.vd->viewmat);
if(G.vd->zbuf) glEnable(GL_DEPTH_TEST);
glFrontFace(GL_CCW);
}
static void draw_cone(GLUquadricObj *qobj, float len, float width)
{
glTranslatef(0.0, 0.0, -0.5f*len);
gluCylinder(qobj, width, 0.0, len, 8, 1);
gluQuadricOrientation(qobj, GLU_INSIDE);
gluDisk(qobj, 0.0, width, 8, 1);
gluQuadricOrientation(qobj, GLU_OUTSIDE);
glTranslatef(0.0, 0.0, 0.5f*len);
}
static void draw_cylinder(GLUquadricObj *qobj, float len, float width)
{
width*= 0.8f; // just for beauty
glTranslatef(0.0, 0.0, -0.5f*len);
gluCylinder(qobj, width, width, len, 8, 1);
gluQuadricOrientation(qobj, GLU_INSIDE);
gluDisk(qobj, 0.0, width, 8, 1);
gluQuadricOrientation(qobj, GLU_OUTSIDE);
glTranslatef(0.0, 0.0, len);
gluDisk(qobj, 0.0, width, 8, 1);
glTranslatef(0.0, 0.0, -0.5f*len);
}
static void draw_manipulator_translate(float mat[][4], int moving, int drawflags, int combo, int colcode)
{
GLUquadricObj *qobj = gluNewQuadric();
float cylen= 0.01f*(float)U.tw_handlesize;
float cywid= 0.25f*cylen, dz, size;
float unitmat[4][4];
/* when called while moving in mixed mode, do not draw when... */
if((drawflags & MAN_TRANS_C)==0) return;
if(moving) glTranslatef(Trans.vec[0], Trans.vec[1], Trans.vec[2]);
glDisable(GL_DEPTH_TEST);
gluQuadricDrawStyle(qobj, GLU_FILL);
/* center circle, do not add to selection when shift is pressed (planar constraint) */
if( (G.f & G_PICKSEL) && (G.qual & LR_SHIFTKEY)==0) glLoadName(MAN_TRANS_C);
manipulator_setcolor('c', colcode);
glPushMatrix();
size= screen_aligned(mat);
Mat4One(unitmat);
drawcircball(GL_LINE_LOOP, unitmat[3], 0.2*size, unitmat);
glPopMatrix();
/* and now apply matrix, we move to local matrix drawing */
mymultmatrix(mat);
/* axis */
glLoadName(-1);
// translate drawn as last, only axis when no combo with scale, or for ghosting
if((combo & V3D_MANIP_SCALE)==0 || colcode==MAN_GHOST)
draw_manipulator_axes(colcode, drawflags & MAN_TRANS_X, drawflags & MAN_TRANS_Y, drawflags & MAN_TRANS_Z);
/* offset in combo mode, for rotate a bit more */
if(combo & (V3D_MANIP_ROTATE)) dz= 1.0f+2.0*cylen;
else if(combo & (V3D_MANIP_SCALE)) dz= 1.0f+0.5*cylen;
else dz= 1.0f;
/* Z Cone */
glTranslatef(0.0, 0.0, dz);
if(drawflags & MAN_TRANS_Z) {
if(G.f & G_PICKSEL) glLoadName(MAN_TRANS_Z);
manipulator_setcolor('z', colcode);
draw_cone(qobj, cylen, cywid);
}
/* X Cone */
glTranslatef(dz, 0.0, -dz);
if(drawflags & MAN_TRANS_X) {
if(G.f & G_PICKSEL) glLoadName(MAN_TRANS_X);
glRotatef(90.0, 0.0, 1.0, 0.0);
manipulator_setcolor('x', colcode);
draw_cone(qobj, cylen, cywid);
glRotatef(-90.0, 0.0, 1.0, 0.0);
}
/* Y Cone */
glTranslatef(-dz, dz, 0.0);
if(drawflags & MAN_TRANS_Y) {
if(G.f & G_PICKSEL) glLoadName(MAN_TRANS_Y);
glRotatef(-90.0, 1.0, 0.0, 0.0);
manipulator_setcolor('y', colcode);
draw_cone(qobj, cylen, cywid);
}
gluDeleteQuadric(qobj);
myloadmatrix(G.vd->viewmat);
if(G.vd->zbuf) glEnable(GL_DEPTH_TEST);
}
static void draw_manipulator_rotate_cyl(float mat[][4], int moving, int drawflags, int combo, int colcode)
{
GLUquadricObj *qobj = gluNewQuadric();
float size;
float cylen= 0.01f*(float)U.tw_handlesize;
float cywid= 0.25f*cylen;
/* when called while moving in mixed mode, do not draw when... */
if((drawflags & MAN_ROT_C)==0) return;
/* prepare for screen aligned draw */
glPushMatrix();
size= screen_aligned(mat);
glDisable(GL_DEPTH_TEST);
/* Screen aligned view rot circle */
if(drawflags & MAN_ROT_V) {
float unitmat[4][4];
Mat4One(unitmat);
if(G.f & G_PICKSEL) glLoadName(MAN_ROT_V);
BIF_ThemeColor(TH_TRANSFORM);
drawcircball(GL_LINE_LOOP, unitmat[3], 1.2f*size, unitmat);
if(moving) {
float vec[3];
vec[0]= (float)(Trans.imval[0] - Trans.center2d[0]);
vec[1]= (float)(Trans.imval[1] - Trans.center2d[1]);
vec[2]= 0.0f;
Normalise(vec);
VecMulf(vec, 1.2f*size);
glBegin(GL_LINES);
glVertex3f(0.0, 0.0, 0.0);
glVertex3fv(vec);
glEnd();
}
}
glPopMatrix();
/* apply the transform delta */
if(moving) {
float matt[4][4];
Mat4CpyMat4(matt, mat); // to copy the parts outside of [3][3]
if (Trans.flag & T_USES_MANIPULATOR) {
Mat4MulMat34(matt, Trans.mat, mat);
}
mymultmatrix(matt);
}
else {
mymultmatrix(mat);
}
glFrontFace( is_mat4_flipped(mat)?GL_CW:GL_CCW);
/* axis */
if( (G.f & G_PICKSEL)==0 ) {
// only draw axis when combo didn't draw scale axes
if((combo & V3D_MANIP_SCALE)==0)
draw_manipulator_axes(colcode, drawflags & MAN_ROT_X, drawflags & MAN_ROT_Y, drawflags & MAN_ROT_Z);
/* only has to be set when not in picking */
gluQuadricDrawStyle(qobj, GLU_FILL);
}
/* Z cyl */
glTranslatef(0.0, 0.0, 1.0);
if(drawflags & MAN_ROT_Z) {
if(G.f & G_PICKSEL) glLoadName(MAN_ROT_Z);
manipulator_setcolor('z', colcode);
draw_cylinder(qobj, cylen, cywid);
}
/* X cyl */
glTranslatef(1.0, 0.0, -1.0);
if(drawflags & MAN_ROT_X) {
if(G.f & G_PICKSEL) glLoadName(MAN_ROT_X);
glRotatef(90.0, 0.0, 1.0, 0.0);
manipulator_setcolor('x', colcode);
draw_cylinder(qobj, cylen, cywid);
glRotatef(-90.0, 0.0, 1.0, 0.0);
}
/* Y cylinder */
glTranslatef(-1.0, 1.0, 0.0);
if(drawflags & MAN_ROT_Y) {
if(G.f & G_PICKSEL) glLoadName(MAN_ROT_Y);
glRotatef(-90.0, 1.0, 0.0, 0.0);
manipulator_setcolor('y', colcode);
draw_cylinder(qobj, cylen, cywid);
}
/* restore */
gluDeleteQuadric(qobj);
myloadmatrix(G.vd->viewmat);
if(G.vd->zbuf) glEnable(GL_DEPTH_TEST);
}
/* ********************************************* */
static float get_manipulator_drawsize(ScrArea *sa)
{
View3D *v3d= sa->spacedata.first;
float size, vec[3], len1, len2;
/* size calculus, depending ortho/persp settings, like initgrabz() */
size= v3d->persmat[0][3]*v3d->twmat[3][0]+ v3d->persmat[1][3]*v3d->twmat[3][1]+ v3d->persmat[2][3]*v3d->twmat[3][2]+ v3d->persmat[3][3];
VECCOPY(vec, v3d->persinv[0]);
len1= Normalise(vec);
VECCOPY(vec, v3d->persinv[1]);
len2= Normalise(vec);
size*= (0.01f*(float)U.tw_size)*(len1>len2?len1:len2);
/* correct for window size to make widgets appear fixed size */
if(sa->winx > sa->winy) size*= 1000.0f/(float)sa->winx;
else size*= 1000.0f/(float)sa->winy;
return size;
}
/* exported to transform_constraints.c */
/* mat, vec = default orientation and location */
/* type = transform type */
/* axis = x, y, z, c */
/* col: 0 = colored, 1 = moving, 2 = ghost */
void draw_manipulator_ext(ScrArea *sa, int type, char axis, int col, float vec[3], float mat[][3])
{
int drawflags= 0;
float mat4[4][4];
int colcode;
Mat4CpyMat3(mat4, mat);
VECCOPY(mat4[3], vec);
Mat4MulFloat3((float *)mat4, get_manipulator_drawsize(sa));
glEnable(GL_BLEND); // let's do it transparent by default
if(col==0) colcode= MAN_RGB;
else if(col==1) colcode= MAN_MOVECOL;
else colcode= MAN_GHOST;
if(type==TFM_ROTATION) {
if(axis=='x') drawflags= MAN_ROT_X;
else if(axis=='y') drawflags= MAN_ROT_Y;
else if(axis=='z') drawflags= MAN_ROT_Z;
else drawflags= MAN_ROT_C;
draw_manipulator_rotate_cyl(mat4, col, drawflags, V3D_MANIP_ROTATE, colcode);
}
else if(type==TFM_RESIZE) {
if(axis=='x') drawflags= MAN_SCALE_X;
else if(axis=='y') drawflags= MAN_SCALE_Y;
else if(axis=='z') drawflags= MAN_SCALE_Z;
else drawflags= MAN_SCALE_C;
draw_manipulator_scale(mat4, col, drawflags, V3D_MANIP_SCALE, colcode);
}
else {
if(axis=='x') drawflags= MAN_TRANS_X;
else if(axis=='y') drawflags= MAN_TRANS_Y;
else if(axis=='z') drawflags= MAN_TRANS_Z;
else drawflags= MAN_TRANS_C;
draw_manipulator_translate(mat4, 0, drawflags, V3D_MANIP_TRANSLATE, colcode);
}
glDisable(GL_BLEND);
}
/* main call, does calc centers & orientation too */
/* uses global G.moving */
static int drawflags= 0xFFFF; // only for the calls below, belongs in scene...?
void BIF_draw_manipulator(ScrArea *sa)
{
View3D *v3d= sa->spacedata.first;
int totsel;
if(!(v3d->twflag & V3D_USE_MANIPULATOR)) return;
if(G.moving && (G.moving & G_TRANSFORM_MANIP)==0) return;
if(G.moving==0) {
v3d->twflag &= ~V3D_DRAW_MANIPULATOR;
totsel= calc_manipulator_stats(sa);
if(totsel==0) return;
v3d->twflag |= V3D_DRAW_MANIPULATOR;
/* now we can define centre */
switch(v3d->around) {
case V3D_CENTRE:
case V3D_ACTIVE:
v3d->twmat[3][0]= (G.scene->twmin[0] + G.scene->twmax[0])/2.0f;
v3d->twmat[3][1]= (G.scene->twmin[1] + G.scene->twmax[1])/2.0f;
v3d->twmat[3][2]= (G.scene->twmin[2] + G.scene->twmax[2])/2.0f;
if(v3d->around==V3D_ACTIVE && G.obedit==NULL && G.obpose==NULL) {
Object *ob= OBACT;
if(ob) VECCOPY(v3d->twmat[3], ob->obmat[3]);
}
break;
case V3D_LOCAL:
case V3D_CENTROID:
VECCOPY(v3d->twmat[3], G.scene->twcent);
break;
case V3D_CURSOR:
VECCOPY(v3d->twmat[3], give_cursor());
break;
}
Mat4MulFloat3((float *)v3d->twmat, get_manipulator_drawsize(sa));
}
if(v3d->twflag & V3D_DRAW_MANIPULATOR) {
if(v3d->twtype & V3D_MANIP_ROTATE) {
/* rotate has special ghosting draw, for pie chart */
if(G.moving) draw_manipulator_rotate_ghost(v3d->twmat, drawflags);
if(G.moving) glEnable(GL_BLEND);
if(G.rt==3) {
if(G.moving) draw_manipulator_rotate_cyl(v3d->twmat, 1, drawflags, v3d->twtype, MAN_MOVECOL);
else draw_manipulator_rotate_cyl(v3d->twmat, 0, drawflags, v3d->twtype, MAN_RGB);
}
else
draw_manipulator_rotate(v3d->twmat, G.moving, drawflags, v3d->twtype);
glDisable(GL_BLEND);
}
if(v3d->twtype & V3D_MANIP_SCALE) {
if(G.moving) {
glEnable(GL_BLEND);
draw_manipulator_scale(v3d->twmat, 0, drawflags, v3d->twtype, MAN_GHOST);
draw_manipulator_scale(v3d->twmat, 1, drawflags, v3d->twtype, MAN_MOVECOL);
glDisable(GL_BLEND);
}
else draw_manipulator_scale(v3d->twmat, 0, drawflags, v3d->twtype, MAN_RGB);
}
if(v3d->twtype & V3D_MANIP_TRANSLATE) {
if(G.moving) {
glEnable(GL_BLEND);
draw_manipulator_translate(v3d->twmat, 0, drawflags, v3d->twtype, MAN_GHOST);
draw_manipulator_translate(v3d->twmat, 1, drawflags, v3d->twtype, MAN_MOVECOL);
glDisable(GL_BLEND);
}
else draw_manipulator_translate(v3d->twmat, 0, drawflags, v3d->twtype, MAN_RGB);
}
}
}
static int manipulator_selectbuf(ScrArea *sa, float hotspot)
{
View3D *v3d= sa->spacedata.first;
rctf rect;
GLuint buffer[64]; // max 4 items per select, so large enuf
short hits, mval[2];
G.f |= G_PICKSEL;
getmouseco_areawin(mval);
rect.xmin= mval[0]-hotspot;
rect.xmax= mval[0]+hotspot;
rect.ymin= mval[1]-hotspot;
rect.ymax= mval[1]+hotspot;
/* get rid of overlay button matrix */
persp(PERSP_VIEW);
setwinmatrixview3d(&rect);
Mat4MulMat4(v3d->persmat, v3d->viewmat, sa->winmat);
glSelectBuffer( 64, buffer);
glRenderMode(GL_SELECT);
glInitNames(); /* these two calls whatfor? It doesnt work otherwise */
glPushName(-2);
/* do the drawing */
if(v3d->twtype & V3D_MANIP_ROTATE) {
if(G.rt==3) draw_manipulator_rotate_cyl(v3d->twmat, 0, MAN_ROT_C, v3d->twtype, MAN_RGB);
else draw_manipulator_rotate(v3d->twmat, 0, MAN_ROT_C, v3d->twtype);
}
if(v3d->twtype & V3D_MANIP_SCALE)
draw_manipulator_scale(v3d->twmat, 0, MAN_SCALE_C, v3d->twtype, MAN_RGB);
if(v3d->twtype & V3D_MANIP_TRANSLATE)
draw_manipulator_translate(v3d->twmat, 0, MAN_TRANS_C, v3d->twtype, MAN_RGB);
glPopName();
hits= glRenderMode(GL_RENDER);
G.f &= ~G_PICKSEL;
setwinmatrixview3d(0);
Mat4MulMat4(v3d->persmat, v3d->viewmat, sa->winmat);
persp(PERSP_WIN);
if(hits==1) return buffer[3];
else if(hits>1) {
GLuint mindep, minval;
int a;
/* we compare the hits in buffer, but value centers highest */
mindep= buffer[1];
minval= buffer[3];
for(a=1; a<hits; a++) {
if(minval==MAN_TRANS_C || minval==MAN_SCALE_C) break;
if(buffer[4*a + 3]==MAN_TRANS_C || buffer[4*a + 3]==MAN_SCALE_C || buffer[4*a + 1] < mindep) {
mindep= buffer[4*a + 1];
minval= buffer[4*a + 3];
}
}
return minval;
}
return 0;
}
/* return 0; nothing happened */
int BIF_do_manipulator(ScrArea *sa)
{
View3D *v3d= sa->spacedata.first;
int val;
if(!(v3d->twflag & V3D_USE_MANIPULATOR)) return 0;
if(!(v3d->twflag & V3D_DRAW_MANIPULATOR)) return 0;
// find the hotspots first test narrow hotspot
val= manipulator_selectbuf(sa, 0.5f*(float)U.tw_hotspot);
if(val) {
checkFirstTime(); // TEMPORARY, check this before doing any transform call.
// drawflags still global, for drawing call above
drawflags= manipulator_selectbuf(sa, 0.2f*(float)U.tw_hotspot);
if(drawflags==0) drawflags= val;
if (drawflags & MAN_TRANS_C) {
initManipulator(TFM_TRANSLATION);
switch(drawflags) {
case MAN_TRANS_C:
break;
case MAN_TRANS_X:
if(G.qual & LR_SHIFTKEY) {
drawflags= MAN_TRANS_Y|MAN_TRANS_Z;
BIF_setDualAxisConstraint(v3d->twmat[1], v3d->twmat[2], " Y+Z");
}
else
BIF_setSingleAxisConstraint(v3d->twmat[0], " X");
break;
case MAN_TRANS_Y:
if(G.qual & LR_SHIFTKEY) {
drawflags= MAN_TRANS_X|MAN_TRANS_Z;
BIF_setDualAxisConstraint(v3d->twmat[0], v3d->twmat[2], " X+Z");
}
else
BIF_setSingleAxisConstraint(v3d->twmat[1], " Y");
break;
case MAN_TRANS_Z:
if(G.qual & LR_SHIFTKEY) {
drawflags= MAN_TRANS_X|MAN_TRANS_Y;
BIF_setDualAxisConstraint(v3d->twmat[0], v3d->twmat[1], " X+Y");
}
else
BIF_setSingleAxisConstraint(v3d->twmat[2], " Z");
break;
}
ManipulatorTransform();
}
else if (drawflags & MAN_SCALE_C) {
initManipulator(TFM_RESIZE);
switch(drawflags) {
case MAN_SCALE_X:
if(G.qual & LR_SHIFTKEY) {
drawflags= MAN_SCALE_Y|MAN_SCALE_Z;
BIF_setDualAxisConstraint(v3d->twmat[1], v3d->twmat[2], " Y+Z");
}
else
BIF_setSingleAxisConstraint(v3d->twmat[0], " X");
break;
case MAN_SCALE_Y:
if(G.qual & LR_SHIFTKEY) {
drawflags= MAN_SCALE_X|MAN_SCALE_Z;
BIF_setDualAxisConstraint(v3d->twmat[0], v3d->twmat[2], " X+Z");
}
else
BIF_setSingleAxisConstraint(v3d->twmat[1], " Y");
break;
case MAN_SCALE_Z:
if(G.qual & LR_SHIFTKEY) {
drawflags= MAN_SCALE_X|MAN_SCALE_Y;
BIF_setDualAxisConstraint(v3d->twmat[0], v3d->twmat[1], " X+Y");
}
else
BIF_setSingleAxisConstraint(v3d->twmat[2], " Z");
break;
}
ManipulatorTransform();
}
else if (drawflags == MAN_ROT_T) { /* trackbal need special case, init is different */
initManipulator(TFM_TRACKBALL);
ManipulatorTransform();
}
else if (drawflags & MAN_ROT_C) {
initManipulator(TFM_ROTATION);
switch(drawflags) {
case MAN_ROT_X:
BIF_setSingleAxisConstraint(v3d->twmat[0], " X");
break;
case MAN_ROT_Y:
BIF_setSingleAxisConstraint(v3d->twmat[1], " Y");
break;
case MAN_ROT_Z:
BIF_setSingleAxisConstraint(v3d->twmat[2], " Z");
break;
}
ManipulatorTransform();
}
}
/* after transform, restore drawflags */
drawflags= 0xFFFF;
return val;
}
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