overte-HifiExperiments/libraries/render-utils/src/AbstractViewStateInterface.h
2018-05-03 18:19:29 -07:00

71 lines
2.4 KiB
C++

//
// AbstractViewStateInterface.h
// interface/src/renderer
//
// Created by Brad Hefta-Gaub on 12/16/14.
// Copyright 2014 High Fidelity, Inc.
//
// Distributed under the Apache License, Version 2.0.
// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
#ifndef hifi_AbstractViewStateInterface_h
#define hifi_AbstractViewStateInterface_h
#include <glm/glm.hpp>
#include <functional>
#include <render/Scene.h>
#include <render/Engine.h>
#include <QtGlobal>
class Transform;
class QThread;
class ViewFrustum;
class PickRay;
class ConicalViewFrustum;
using ConicalViewFrustums = std::vector<ConicalViewFrustum>;
/// Interface provided by Application to other objects that need access to the current view state details
class AbstractViewStateInterface {
public:
/// copies the current view frustum for rendering the view state
virtual void copyCurrentViewFrustum(ViewFrustum& viewOut) const = 0;
virtual const ConicalViewFrustums& getConicalViews() const = 0;
virtual QThread* getMainThread() = 0;
virtual PickRay computePickRay(float x, float y) const = 0;
virtual glm::vec3 getAvatarPosition() const = 0;
// Unfortunately, having this here is a bad idea. Lots of objects connect to
// the aboutToQuit signal, and it's impossible to know the order in which
// the receivers will be called, so this might return false negatives
//virtual bool isAboutToQuit() const = 0;
// Queue code to execute on the main thread.
// If called from the main thread, the lambda will execute synchronously
virtual void postLambdaEvent(const std::function<void()>& f) = 0;
// Synchronously execute code on the main thread. This function will
// not return until the code is executed, regardles of which thread it
// is called from
virtual void sendLambdaEvent(const std::function<void()>& f) = 0;
virtual qreal getDevicePixelRatio() = 0;
virtual render::ScenePointer getMain3DScene() = 0;
virtual render::EnginePointer getRenderEngine() = 0;
virtual void pushPostUpdateLambda(void* key, const std::function<void()>& func) = 0;
virtual bool isHMDMode() const = 0;
// FIXME - we shouldn't assume that there's a single instance of an AbstractViewStateInterface
static AbstractViewStateInterface* instance();
static void setInstance(AbstractViewStateInterface* instance);
};
#endif // hifi_AbstractViewStateInterface_h