DYTSrouce/src/scene/ui/ZoomManager.cpp

#include "ZoomManager.h"

#include <osgEarthUtil/EarthManipulator>

#include "config.h"
#include "common/SpdLogger.h"
#include "viewer/OsgViewUI.h"
#include "common/RecourceHelper.h"
#include "scene/OEScene.h"

ZoomManager::ZoomManager(OEScene* oeScene)
	: oeScene_(oeScene)
{
	zoom = 0.0;
	state = ZoomManager::DEFAULT;

	_canvasZoom = new	osgWidget::Canvas("Zoom");
	_canvasZoom->setOrigin(733, 350);
	_canvasZoom->getBackground()->setColor(0, 0, 0, 0);
	_canvasZoom->setVisibilityMode(osgWidget::Window::VM_ENTIRE);
	_canvasZoom->setStrata(osgWidget::Window::STRATA_FOREGROUND);

	const std::string texturePath = RecourceHelper::Get().GetResourcesPath().toStdString();
	_lessen = new ZoomWidget("lessen", 18, 20, texturePath + "/northarrow/zoom_down.png",
		"lessen", osgWidget::Widget::LAYER_TOP, this);
	_enlargement = new ZoomWidget("enlargement", 18, 20,
		texturePath + "/northarrow/zoom_up.png", "enlargement",
		osgWidget::Widget::LAYER_TOP, this);
	_zoomBackground = new BackGroundWidget("zoomBackground", 18, 144,
		texturePath + "/northarrow/zoomactive.png");
	_bar = new	ZoomWidget("bar", 17, 10,
		texturePath + "/northarrow/zoombar_norm.png", "bar",
		osgWidget::Widget::LAYER_TOP, this);
	_bar_ = new	BackGroundWidget("bar_", 18, 12,
		texturePath + "/northarrow/zoombar_norm_.png");
	_zoomBackground_shadow = new BackGroundWidget("background_shadow", 18, 144,
		texturePath + "/northarrow/zoombackground.png");

	_canvasZoom->addWidget(_lessen, 0, 0);
	_canvasZoom->addWidget(_enlargement, 0, 124);
	_canvasZoom->addWidget(_bar_, 0, 66);
	_canvasZoom->addWidget(_bar, 0, 67);
	_canvasZoom->addWidget(_zoomBackground, 0, 0);
	_canvasZoom->addWidget(_zoomBackground_shadow, 0, 0);
}

ZoomManager::~ZoomManager(void)
{
	delete	_canvasZoom;

	delete	_lessen;
	delete	_enlargement;
	delete	_zoomBackground;
	delete	_bar;
	delete	_bar_;
	delete  _zoomBackground_shadow;

}

void ZoomManager::ResetCanvasPosition(double x, double y)
{
	_canvasZoom->setOrigin(x - 100 + 33, y - 250);
	_canvasZoom->resize();
}

void ZoomManager::SendZoom()
{
	_zoomNum[0] = zoom;
	slotZoom();
	//emit signalZoom(QVariant(_zoomNum[0]));
}

void ZoomManager::AttachViewUI(OsgViewUI* ui) {
	dyt_check(nullptr != ui);

	ui->addChild(_canvasZoom);
}


void ZoomManager::slotZoom() {
	double val = _zoomNum[0];
	double dx = val*(-1.0)*(0.0005);// dx不起作用
	double dy = val*(-1.0)*(0.0005);

	// dx *= getSettings()->getMouseSensitivity();
	// dy *= getSettings()->getMouseSensitivity();

	double minAlt = 500.0;
	double maxAlt = 35000000.0;
	auto em = oeScene_->GetManipulater();
	auto vp = em->getViewpoint();
	vp.setRange(vp.getRange() * 1.1);
	em->setViewpoint(vp);
	//
	// double scale = 1.0f + dy;
	// double distance = em->getDistance() * scale;
	// distance = std::max(distance, maxAlt);
	//
	// // if (!OEScene::GetSrs()->isGeographic())
	// // {
	// // 	osg::Viewport* vp = oeScene_->GetViewport();
	// // 	if (vp)
	// // 	{
	// // 		double ar = vp->width() / vp->height();
	// // 		double y = distance * tan(0.5*osg::DegreesToRadians(em->));
	// // 		double x = y * ar;
	// //
	// // 		osgEarth::GeoExtent extentMap = oeScene_->getMap()->getProfile()->getExtent();
	// //
	// // 		if ((_center.y() - y) < extentMap.yMin())
	// // 		{
	// // 			return;
	// // 		}
	// // 		if ((_center.y() + y) > extentMap.yMax())
	// // 		{
	// // 			return;
	// // 		}
	// // 	}
	// // }
	//
	// em->setDistance(distance);
}