/****************************************************************************
* MeshLab o o *
* A versatile mesh processing toolbox o o *
* _ O _ *
* Copyright(C) 2008 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
* All rights reserved. *
* *
* 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 (http://www.gnu.org/licenses/gpl.txt) *
* for more details. *
* *
****************************************************************************/
/****************************************************************************
History
$Log: not supported by cvs2svn $
Revision 1.1 2008/03/02 16:44:18 benedetti
moved ActiveCoordinateFrame to its own files
****************************************************************************/
#include <GL/glew.h>
#include <wrap/gl/math.h>
#include <wrap/gl/space.h>
#include <wrap/gl/addons.h>
#include "activecoordinateframe.h"
using namespace vcg;
ActiveCoordinateFrame::ActiveCoordinateFrame(float size)
:MovableCoordinateFrame(size),manipulator(NULL),drawmoves(true),
drawrotations(true),move_button(Trackball::BUTTON_RIGHT),
rotate_button(Trackball::BUTTON_LEFT),x_modifier(Trackball::BUTTON_NONE),
y_modifier(Trackball::KEY_CTRL),z_modifier(Trackball::KEY_SHIFT),
x_axis(1,0,0),y_axis(0,1,0),z_axis(0,0,1),rot_snap_rad(0.0f),mov_snap(0.0f),
movx(move_button | x_modifier),movy(move_button | y_modifier),
movz(move_button | z_modifier),rotx(rotate_button | x_modifier),
roty(rotate_button | y_modifier),rotz(rotate_button | z_modifier)
{
manipulator=new Trackball();
Update();
}
ActiveCoordinateFrame::~ActiveCoordinateFrame()
{
if(manipulator!=NULL) {
delete manipulator;
manipulator=NULL;
}
}
void ActiveCoordinateFrame::Render(QGLWidget* glw)
{
glPushMatrix();
manipulator->radius=size;
manipulator->center=position;
manipulator->GetView();
manipulator->Apply(false);
MovableCoordinateFrame::Render(glw);
// got nothing to draw
if(!drawmoves && !drawrotations){
glPopMatrix();
return;
}
int current_mode=manipulator->current_button;
bool rotating=(current_mode==rotx)||(current_mode==roty)||(current_mode==rotz);
bool moving=(current_mode==movx)||(current_mode==movy)||(current_mode==movz);
// maybe got something to draw
glPushAttrib(GL_ALL_ATTRIB_BITS);
glDisable(GL_LIGHTING);
glDisable(GL_TEXTURE_2D);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_LINE_SMOOTH);
glEnable(GL_POINT_SMOOTH);
QString message("this should never be seen");
char axis_name;
float verse;
if(current_mode==x_modifier){
glColor(xcolor); message = QString("move or rotate on X axis");
} else if(current_mode==y_modifier){
glColor(ycolor); message = QString("move or rotate on Y axis");
} else if(current_mode==z_modifier){
glColor(zcolor); message = QString("move or rotate on Z axis");
} else
if(rotating && drawrotations){ // draw a rotation
Point3f axis, arc_point;
float angle;
manipulator->track.rot.ToAxis(angle,axis);
angle = -angle;
if(current_mode==rotx){
verse=((axis+x_axis).Norm()<1?-1:1);
glColor(xcolor); axis_name='x'; arc_point=y_axis*(size*0.8);
} else if(current_mode==roty) {
verse=((axis+y_axis).Norm()<1?-1:1);
glColor(ycolor); axis_name='y'; arc_point=z_axis*(size*0.8);
} else if(current_mode==rotz) {
verse=((axis+z_axis).Norm()<1?-1:1);
glColor(zcolor); axis_name='z'; arc_point=x_axis*(size*0.8);
} else assert(0);
// normalizing rotation between -180 and 180 degrees
float sign = ((angle*verse)<0) ? -1 : 1;
float abs_angle = (angle<0) ? -angle : angle;
angle = sign * ( (abs_angle>M_PI) ? 2*M_PI-abs_angle : abs_angle );
axis = axis * verse;
message = QString("rotated %1 deg around %2")
.arg(((angle*180.0)/M_PI),5,'f',3)
.arg(axis_name);
Quaternionf arc_rot;
arc_rot.FromAxis(angle/18.0,axis);
glBegin(GL_POLYGON);
glVertex(position);
glVertex(position+arc_point);
for(int i=0;i<18;i++){
arc_point = arc_rot.Rotate(arc_point);
glVertex(position+arc_point);
}
glEnd();
} else if(moving && drawmoves){ // draw a traslation
Point3f ntra=manipulator->track.tra;
ntra.Normalize();
if(current_mode==movx){
verse=((ntra+x_axis).Norm()<1?-1:1);
glColor(xcolor); axis_name='x';
}else if(current_mode==movy){
verse=((ntra+y_axis).Norm()<1?-1:1);
glColor(ycolor); axis_name='y';
}else if(current_mode==movz){
verse=((ntra+z_axis).Norm()<1?-1:1);
glColor(zcolor); axis_name='z';
}else assert(0);
message = QString("moved %1 units along %2")
.arg(verse*manipulator->track.tra.Norm(),5,'f',3)
.arg(axis_name);
Point3f old_pos = position-manipulator->track.tra;
glLineWidth(2*linewidth);
glPointSize(4*linewidth);
glBegin(GL_LINES);
glVertex(position);
glVertex(old_pos);
glEnd();
glBegin(GL_POINTS);
glVertex(old_pos);
glEnd();
} else { // got nothing to draw
glPopAttrib();
glPopMatrix();
return;
}
// draw message below cursor
font.setBold(true);
font.setPixelSize(12);
QPoint cursor=glw->mapFromGlobal(glw->cursor().pos());
glw->renderText(cursor.x()+16,cursor.y()+16,message,font);
glPopAttrib();
glPopMatrix();
}
void ActiveCoordinateFrame::Reset(bool reset_position,bool reset_alignment)
{
MovableCoordinateFrame::Reset(reset_position, reset_alignment);
Update();
manipulator->Reset();
}
void ActiveCoordinateFrame::SetPosition(const Point3f newpos)
{
MovableCoordinateFrame::SetPosition(newpos);
Update();
manipulator->Reset();
}
void ActiveCoordinateFrame::SetRotation(const Quaternionf newrot)
{
MovableCoordinateFrame::SetRotation(newrot);
Update();
manipulator->Reset();
}
void ActiveCoordinateFrame::AlignWith(const Point3f primary,const Point3f secondary,const char c1,const char c2)
{
MovableCoordinateFrame::AlignWith(primary,secondary,c1,c2);
Update();
manipulator->Reset();
}
void ActiveCoordinateFrame::MouseDown(int x, int y, /*Button*/ int button)
{
Move(manipulator->track);
manipulator->Reset();
manipulator->MouseDown(x,y,button);
}
void ActiveCoordinateFrame::MouseMove(int x, int y)
{
manipulator->MouseMove(x,y);
}
void ActiveCoordinateFrame::MouseUp(int x, int y, /*Button */ int button)
{
Move(manipulator->track);
manipulator->Reset();
manipulator->MouseUp(x, y, button);
}
void ActiveCoordinateFrame::ButtonUp(int button)
{
Move(manipulator->track);
manipulator->Reset();
manipulator->ButtonUp((Trackball::Button) button);
}
void ActiveCoordinateFrame::ButtonDown(int button)
{
Move(manipulator->track);
manipulator->Reset();
manipulator->ButtonDown((Trackball::Button) button);
}
void ActiveCoordinateFrame::SetSnap(float rot_deg)
{
assert((rot_deg>=0.0)&&(rot_deg<=180));
rot_snap_rad=rot_deg*M_PI/180.0;
Update();
}
void ActiveCoordinateFrame::Move(const Similarityf track)
{
MovableCoordinateFrame::Move(track);
Update();
}
void ActiveCoordinateFrame::Update()
{
movx=(move_button | x_modifier);
movy=(move_button | y_modifier);
movz=(move_button | z_modifier);
rotx=(rotate_button | x_modifier);
roty=(rotate_button | y_modifier);
rotz=(rotate_button | z_modifier);
Point3f p=position;
Quaternionf r=Inverse(rotation);
x_axis=r.Rotate(Point3f(1,0,0));
y_axis=r.Rotate(Point3f(0,1,0));
z_axis=r.Rotate(Point3f(0,0,1));
std::map<int, TrackMode *>::iterator it;
for(it = manipulator->modes.begin(); it != manipulator->modes.end(); it++)
{
if ((*it).second)
delete (*it).second;
}
manipulator->modes.clear();
manipulator->modes[0] = NULL;
manipulator->modes[movx] = new AxisMode(p,x_axis);
manipulator->modes[movy] = new AxisMode(p,y_axis);
manipulator->modes[movz] = new AxisMode(p,z_axis);
manipulator->modes[rotx] = new CylinderMode(p,x_axis,rot_snap_rad);
manipulator->modes[roty] = new CylinderMode(p,y_axis,rot_snap_rad);
manipulator->modes[rotz] = new CylinderMode(p,z_axis,rot_snap_rad);
manipulator->SetCurrentAction();
}