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/****************************************************************************
**
** Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QT3DRENDER_RENDER_PICKBOUNDINGVOLUMEUTILS_H
#define QT3DRENDER_RENDER_PICKBOUNDINGVOLUMEUTILS_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <Qt3DCore/QNodeId>
#include <Qt3DRender/private/qray3d_p.h>
#include <Qt3DRender/private/trianglesvisitor_p.h>
#include <Qt3DRender/private/qraycastingservice_p.h>
QT_BEGIN_NAMESPACE
namespace Qt3DRender {
namespace RayCasting {
class QAbstractCollisionQueryService;
}
namespace Render {
class Entity;
class Renderer;
class FrameGraphNode;
namespace PickingUtils {
struct Q_AUTOTEST_EXPORT ViewportCameraAreaTriplet
{
Qt3DCore::QNodeId cameraId;
QRectF viewport;
QSize area;
};
QT3D_DECLARE_TYPEINFO_3(Qt3DRender, Render, PickingUtils, ViewportCameraAreaTriplet, Q_PRIMITIVE_TYPE)
class Q_AUTOTEST_EXPORT ViewportCameraAreaGatherer
{
public:
ViewportCameraAreaGatherer(const Qt3DCore::QNodeId &nodeId = Qt3DCore::QNodeId()) : m_targetCamera(nodeId) { }
QVector<ViewportCameraAreaTriplet> gather(FrameGraphNode *root);
private:
Qt3DCore::QNodeId m_targetCamera;
QVector<FrameGraphNode *> m_leaves;
void visit(FrameGraphNode *node);
ViewportCameraAreaTriplet gatherUpViewportCameraAreas(Render::FrameGraphNode *node) const;
bool isUnique(const QVector<ViewportCameraAreaTriplet> &vcaTriplets, const ViewportCameraAreaTriplet &vca) const;
};
class Q_AUTOTEST_EXPORT EntityGatherer
{
public:
explicit EntityGatherer(Entity *root);
QVector<Entity *> entities() const;
private:
Entity *m_root;
mutable QVector<Entity *> m_entities;
mutable bool m_needsRefresh;
};
class Q_AUTOTEST_EXPORT CollisionVisitor : public TrianglesVisitor
{
public:
typedef QVector<RayCasting::QCollisionQueryResult::Hit> HitList;
HitList hits;
CollisionVisitor(NodeManagers* manager, const Entity *root, const RayCasting::QRay3D& ray,
bool frontFaceRequested, bool backFaceRequested)
: TrianglesVisitor(manager), m_root(root), m_ray(ray), m_triangleIndex(0)
, m_frontFaceRequested(frontFaceRequested), m_backFaceRequested(backFaceRequested)
{
}
private:
const Entity *m_root;
RayCasting::QRay3D m_ray;
uint m_triangleIndex;
bool m_frontFaceRequested;
bool m_backFaceRequested;
void visit(uint andx, const QVector3D &a,
uint bndx, const QVector3D &b,
uint cndx, const QVector3D &c) Q_DECL_OVERRIDE;
bool intersectsSegmentTriangle(uint andx, const QVector3D &a,
uint bndx, const QVector3D &b,
uint cndx, const QVector3D &c);
};
class Q_AUTOTEST_EXPORT HierarchicalEntityPicker
{
public:
explicit HierarchicalEntityPicker(const RayCasting::QRay3D &ray);
bool collectHits(Entity *root);
inline CollisionVisitor::HitList hits() const { return m_hits; }
inline QVector<Entity *> entities() const { return m_entities; }
private:
RayCasting::QRay3D m_ray;
CollisionVisitor::HitList m_hits;
QVector<Entity *> m_entities;
};
struct Q_AUTOTEST_EXPORT AbstractCollisionGathererFunctor
{
AbstractCollisionGathererFunctor();
virtual ~AbstractCollisionGathererFunctor();
NodeManagers *m_manager;
RayCasting::QRay3D m_ray;
// This define is required to work with QtConcurrent
typedef CollisionVisitor::HitList result_type;
result_type operator ()(const Entity *entity) const;
virtual result_type pick(RayCasting::QAbstractCollisionQueryService *rayCasting, const Entity *entity) const = 0;
static void sortHits(CollisionVisitor::HitList &results);
};
struct Q_AUTOTEST_EXPORT EntityCollisionGathererFunctor : public AbstractCollisionGathererFunctor
{
result_type pick(RayCasting::QAbstractCollisionQueryService *rayCasting, const Entity *entity) const Q_DECL_OVERRIDE;
};
struct Q_AUTOTEST_EXPORT TriangleCollisionGathererFunctor : public AbstractCollisionGathererFunctor
{
bool m_frontFaceRequested;
bool m_backFaceRequested;
result_type pick(RayCasting::QAbstractCollisionQueryService *rayCasting, const Entity *entity) const Q_DECL_OVERRIDE;
bool rayHitsEntity(RayCasting::QAbstractCollisionQueryService *rayCasting, const Entity *entity) const;
};
Q_AUTOTEST_EXPORT QVector<Entity *> gatherEntities(Entity *entity, QVector<Entity *> entities);
Q_AUTOTEST_EXPORT CollisionVisitor::HitList reduceToFirstHit(CollisionVisitor::HitList &result, const CollisionVisitor::HitList &intermediate);
// Unordered
Q_AUTOTEST_EXPORT CollisionVisitor::HitList reduceToAllHits(CollisionVisitor::HitList &results, const CollisionVisitor::HitList &intermediate);
} // PickingUtils
} // Render
} // Qt3DRender
QT_END_NAMESPACE
#endif // QT3DRENDER_RENDER_PICKBOUNDINGVOLUMEUTILS_H
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