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/**
*
* This file is part of Tulip (www.tulip-software.org)
*
* Authors: David Auber and the Tulip development Team
* from LaBRI, University of Bordeaux
*
* Tulip is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation, either version 3
* of the License, or (at your option) any later version.
*
* Tulip 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.
*
*/
#include "UniformDeformationScreen.h"
namespace pocore {
UniformDeformationScreen::UniformDeformationScreen():
_tx(0), _ty(0), _zoom(1) {
updateMatrix();
}
//=======================================================
Vec2f UniformDeformationScreen::project(const Vec2f &point) const {
Vec2f scPoint;
tlp::Vector<double, 3> vect, vectres;
vect[0] = point[0];
vect[1] = point[1];
vect[2] = 1.0;
vectres = _mat * vect;
scPoint[0] = (vectres[0]/vectres[2]);
scPoint[1] = (vectres[1]/vectres[2]);
return scPoint;
}
//=======================================================
Vec2f UniformDeformationScreen::unproject(const Vec2f &point) const {
Vec2f scPoint(point);
tlp::Vector<double, 3> vect, vectres;
vect[0] = point[0];
vect[1] = point[1];
vect[2] = 1.0;
vectres = _invMat * vect;
scPoint[0] = vectres[0]/vectres[2];
scPoint[1] = vectres[1]/vectres[2];
return scPoint;
}
//=======================================================
void UniformDeformationScreen::setTranslation(double x, double y) {
_tx = x;
_ty = y;
updateMatrix();
}
//=======================================================
void UniformDeformationScreen::getTranslation(double &x, double &y) {
x=_tx;
y=_ty;
}
//=======================================================
void UniformDeformationScreen::setZoom(double zoom) {
_zoom = zoom;
updateMatrix();
}
//=======================================================
double UniformDeformationScreen::getZoom() {
return _zoom;
}
//=======================================================
void UniformDeformationScreen::updateMatrix() {
tlp::Matrix<double, 3> tmp;
//zoom
tmp.fill(0);
tmp[0][0] = _zoom;
tmp[1][1] = _zoom;
tmp[2][2] = 1.0;
tmp[2][0] = 0.;
tmp[2][1] = 0.;
//translate
_mat.fill(0);
_mat[0][0] = 1.;
_mat[1][1] = 1.;
_mat[2][2] = 1.;
_mat[0][2] = -_tx;
_mat[1][2] = -_ty;
_mat = tmp * _mat;
_invMat = _mat;
_invMat.inverse();
}
}
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