1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
/****************************************************************************
**
** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
** Copyright (C) 2015 The Qt Company Ltd and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://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.LGPLv3 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.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 later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "calcboundingvolumejob_p.h"
#include <Qt3DRender/private/nodemanagers_p.h>
#include <Qt3DRender/private/entity_p.h>
#include <Qt3DRender/private/renderlogging_p.h>
#include <Qt3DRender/private/managers_p.h>
#include <Qt3DRender/private/geometryrenderer_p.h>
#include <Qt3DRender/private/geometry_p.h>
#include <Qt3DRender/private/buffermanager_p.h>
#include <Qt3DRender/private/attribute_p.h>
#include <Qt3DRender/private/buffer_p.h>
#include <Qt3DRender/private/sphere_p.h>
#include <QtCore/qmath.h>
#include <QtConcurrent/QtConcurrent>
QT_BEGIN_NAMESPACE
namespace Qt3DRender {
namespace Render {
namespace {
void calculateLocalBoundingVolume(NodeManagers *manager, Entity *node);
struct UpdateBoundFunctor {
NodeManagers *manager;
void operator ()(Qt3DRender::Render::Entity *node)
{
calculateLocalBoundingVolume(manager, node);
}
};
void calculateLocalBoundingVolume(NodeManagers *manager, Entity *node)
{
// The Bounding volume will only be computed if the position Buffer
// isDirty
GeometryRenderer *gRenderer = node->renderComponent<GeometryRenderer>();
if (gRenderer) {
Geometry *geom = manager->lookupResource<Geometry, GeometryManager>(gRenderer->geometryId());
if (geom) {
Qt3DRender::Render::Attribute *pickVolumeAttribute = manager->lookupResource<Attribute, AttributeManager>(geom->boundingPositionAttribute());
// Use the default position attribute if attribute is null
if (!pickVolumeAttribute) {
Q_FOREACH (const Qt3DCore::QNodeId attrId, geom->attributes()) {
pickVolumeAttribute = manager->lookupResource<Attribute, AttributeManager>(attrId);
if (pickVolumeAttribute &&
pickVolumeAttribute->name() == QAttribute::defaultPositionAttributeName())
break;
}
}
if (pickVolumeAttribute) {
if (!pickVolumeAttribute
|| pickVolumeAttribute->attributeType() != QAbstractAttribute::VertexAttribute
|| pickVolumeAttribute->dataType() != QAbstractAttribute::Float
|| pickVolumeAttribute->dataSize() < 3) {
qWarning() << "QBoundingVolumeSpecifier pickVolume Attribute not suited for bounding volume computation";
return;
}
Buffer *buf = manager->lookupResource<Buffer, BufferManager>(pickVolumeAttribute->bufferId());
// No point in continuing if the positionAttribute doesn't have a suitable buffer
if (!buf) {
qWarning() << "ObjectPicker pickVolume Attribute not referencing a valid buffer";
return;
}
// Buf will be set to not dirty once it's loaded
// in a job executed after this one
// We need to recompute the bounding volume
// If anything in the GeometryRenderer has changed
if (buf->isDirty() ||
node->isBoundingVolumeDirty() ||
pickVolumeAttribute->isDirty() ||
geom->isDirty() ||
gRenderer->isDirty()) {
const QByteArray buffer = buf->data();
const char *rawBuffer = buffer.constData();
rawBuffer += pickVolumeAttribute->byteOffset();
const int stride = pickVolumeAttribute->byteStride() ? pickVolumeAttribute->byteStride() : sizeof(float) * pickVolumeAttribute->dataSize();
QVector<QVector3D> vertices(pickVolumeAttribute->count());
// TODO avoid copying the vertices
for (int c = 0, vC = vertices.size(); c < vC; ++c) {
QVector3D v;
const float *fptr = reinterpret_cast<const float*>(rawBuffer);
// TODO unwrap loop (switch?)
for (uint i = 0, m = qMin(pickVolumeAttribute->dataSize(), 3U); i < m; ++i)
v[i] = fptr[i];
vertices[c] = v;
rawBuffer += stride;
}
node->localBoundingVolume()->initializeFromPoints(vertices);
node->unsetBoundingVolumeDirty();
}
}
}
}
const QVector<Qt3DRender::Render::Entity *> children = node->children();
if (children.size() > 1) {
UpdateBoundFunctor functor;
functor.manager = manager;
QtConcurrent::blockingMap(children, functor);
} else {
Q_FOREACH (Entity *child, node->children())
calculateLocalBoundingVolume(manager, child);
}
}
} // anonymous
CalculateBoundingVolumeJob::CalculateBoundingVolumeJob(NodeManagers *manager)
: m_manager(manager),
m_node(Q_NULLPTR)
{
}
void CalculateBoundingVolumeJob::run()
{
calculateLocalBoundingVolume(m_manager, m_node);
}
void CalculateBoundingVolumeJob::setRoot(Entity *node)
{
m_node = node;
}
} // namespace Render
} // namespace Qt3DRender
QT_END_NAMESPACE
|
