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+/****************************************************************************
+**
+** Copyright (C) 2008-2012 NVIDIA Corporation.
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt 3D Studio.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** 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 General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) 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.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-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#pragma once
+#ifndef QT3DS_RENDER_GRAPH_OBJECT_PICK_QUERY_H
+#define QT3DS_RENDER_GRAPH_OBJECT_PICK_QUERY_H
+
+#include "Qt3DSRender.h"
+#include "foundation/Qt3DSVec2.h"
+#include "foundation/Qt3DSDataRef.h"
+#include "foundation/Qt3DSMat44.h"
+#include "Qt3DSRenderImage.h"
+
+namespace qt3ds {
+namespace render {
+
+ class IOffscreenRenderer;
+
+ struct Qt3DSRenderPickSubResult
+ {
+ IOffscreenRenderer *m_SubRenderer;
+ QT3DSMat44 m_TextureMatrix;
+ NVRenderTextureCoordOp::Enum m_HorizontalTilingMode;
+ NVRenderTextureCoordOp::Enum m_VerticalTilingMode;
+ QT3DSU32 m_ViewportWidth;
+ QT3DSU32 m_ViewportHeight;
+ Qt3DSRenderPickSubResult *m_NextSibling;
+
+ Qt3DSRenderPickSubResult()
+ : m_SubRenderer(NULL)
+ , m_NextSibling(NULL)
+ {
+ }
+ Qt3DSRenderPickSubResult(IOffscreenRenderer &inSubRenderer, QT3DSMat44 inTextureMatrix,
+ NVRenderTextureCoordOp::Enum inHorizontalTilingMode,
+ NVRenderTextureCoordOp::Enum inVerticalTilingMode, QT3DSU32 width,
+ QT3DSU32 height)
+ : m_SubRenderer(&inSubRenderer)
+ , m_TextureMatrix(inTextureMatrix)
+ , m_HorizontalTilingMode(inHorizontalTilingMode)
+ , m_VerticalTilingMode(inVerticalTilingMode)
+ , m_ViewportWidth(width)
+ , m_ViewportHeight(height)
+ , m_NextSibling(NULL)
+ {
+ }
+ };
+
+ struct Qt3DSRenderPickResult
+ {
+ const SGraphObject *m_HitObject;
+ QT3DSF32 m_CameraDistanceSq;
+ // The local coordinates in X,Y UV space where the hit occured
+ QT3DSVec2 m_LocalUVCoords;
+ // The local mouse coordinates will be the same on all of the sub objects.
+ Qt3DSRenderPickSubResult *m_FirstSubObject;
+ // The offscreen renderer that was used to render the scene graph this result was produced
+ // from.
+ IOffscreenRenderer *m_OffscreenRenderer;
+
+ Qt3DSRenderPickResult(const SGraphObject &inHitObject, QT3DSF32 inCameraDistance,
+ const QT3DSVec2 &inLocalUVCoords)
+ : m_HitObject(&inHitObject)
+ , m_CameraDistanceSq(inCameraDistance)
+ , m_LocalUVCoords(inLocalUVCoords)
+ , m_FirstSubObject(NULL)
+ , m_OffscreenRenderer(NULL)
+ {
+ }
+ Qt3DSRenderPickResult()
+ : m_HitObject(NULL)
+ , m_CameraDistanceSq(QT3DS_MAX_F32)
+ , m_LocalUVCoords(0, 0)
+ , m_FirstSubObject(NULL)
+ , m_OffscreenRenderer(NULL)
+ {
+ }
+ };
+
+ class IGraphObjectPickQuery
+ {
+ protected:
+ virtual ~IGraphObjectPickQuery() {}
+
+ public:
+ // Implementors have the option of batching the results to allow fewer virtual calls
+ // or returning one item each pick.
+ // Results are guaranteed to be returned nearest to furthest
+ // If the return value has size of zero then we assume nothing more can be picked and the
+ // pick
+ // is finished.
+ virtual Qt3DSRenderPickResult Pick(const QT3DSVec2 &inMouseCoords,
+ const QT3DSVec2 &inViewportDimensions,
+ bool inPickEverything) = 0;
+ };
+}
+}
+#endif