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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 "ZoomUtils.h"
#include <tulip/QtGlSceneZoomAndPanAnimator.h>
#include <tulip/GlMainWidget.h>
#include <tulip/Camera.h>
using namespace std;
namespace tlp {
void zoomOnScreenRegion(GlMainWidget *glWidget, const BoundingBox &boundingBox, const bool optimalPath,
const double velocity, const double p) {
QtGlSceneZoomAndPanAnimator animator(glWidget, boundingBox,1000,"Main", optimalPath, velocity, p);
animator.animateZoomAndPan();
}
void zoomOnScreenRegionWithoutAnimation(GlMainWidget *glWidget, const BoundingBox &boundingBox) {
Camera &camera = glWidget->getScene()->getGraphCamera();
Coord bbScreenFirst = camera.worldTo2DScreen(Coord(boundingBox[0]));
Coord bbScreenSecond = camera.worldTo2DScreen(Coord(boundingBox[1]));
float bbWidthScreen = bbScreenSecond.getX() - bbScreenFirst.getX();
float bbHeightScreen = bbScreenSecond.getY() - bbScreenFirst.getY();
bbWidthScreen += bbWidthScreen * .1;
bbHeightScreen += bbHeightScreen * .1;
float startSize, endSize;
if (bbHeightScreen < bbWidthScreen) {
startSize = glWidget->width();
endSize = bbWidthScreen;
}
else {
startSize = glWidget->height();
endSize = bbHeightScreen;
}
float zoomFactor = startSize / endSize;
double zoomStart = camera.getZoomFactor();
double zoomEnd = zoomStart * zoomFactor;
bool withZoom = zoomFactor < 0.99 || zoomFactor > 1.01;
Coord newCamCenter = (Coord(boundingBox[0]) + Coord(boundingBox[1])) / ((float)2.0);
newCamCenter.setZ(boundingBox[0][2]);
camera.setCenter(newCamCenter);
camera.setEyes(Coord(0, 0, camera.getSceneRadius()));
camera.setEyes(camera.getEyes() + camera.getCenter());
camera.setUp(Coord(0, 1., 0));
if (withZoom) {
camera.setZoomFactor(zoomEnd);
}
}
}
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