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39
40#include "viewportnode_p.h"
41#include <Qt3DRender/qviewport.h>
42#include <Qt3DRender/private/qviewport_p.h>
43
44QT_BEGIN_NAMESPACE
45
46using namespace Qt3DCore;
47
48namespace Qt3DRender {
49namespace Render {
50
51ViewportNode::ViewportNode()
52 : FrameGraphNode(FrameGraphNode::Viewport)
53 , m_xMin(0.0f)
54 , m_yMin(0.0f)
55 , m_xMax(1.0f)
56 , m_yMax(1.0f)
57 , m_gamma(2.2f)
58{
59}
60
61
62void ViewportNode::syncFromFrontEnd(const QNode *frontEnd, bool firstTime)
63{
64 const QViewport *node = qobject_cast<const QViewport *>(object: frontEnd);
65 if (!node)
66 return;
67
68 FrameGraphNode::syncFromFrontEnd(frontEnd, firstTime);
69
70 const QRectF oldRect(m_xMin, m_yMin, m_xMax, m_yMax);
71 if (oldRect != node->normalizedRect()) {
72 m_xMin = node->normalizedRect().x();
73 m_yMin = node->normalizedRect().y();
74 m_xMax = node->normalizedRect().width();
75 m_yMax = node->normalizedRect().height();
76 markDirty(changes: AbstractRenderer::FrameGraphDirty);
77 }
78
79 if (node->gamma() != m_gamma) {
80 m_gamma = node->gamma();
81 markDirty(changes: AbstractRenderer::FrameGraphDirty);
82 }
83}
84
85float ViewportNode::xMin() const
86{
87 return m_xMin;
88}
89
90void ViewportNode::setXMin(float xMin)
91{
92 m_xMin = xMin;
93}
94float ViewportNode::yMin() const
95{
96 return m_yMin;
97}
98
99void ViewportNode::setYMin(float yMin)
100{
101 m_yMin = yMin;
102}
103float ViewportNode::xMax() const
104{
105 return m_xMax;
106}
107
108void ViewportNode::setXMax(float xMax)
109{
110 m_xMax = xMax;
111}
112float ViewportNode::yMax() const
113{
114 return m_yMax;
115}
116
117void ViewportNode::setYMax(float yMax)
118{
119 m_yMax = yMax;
120}
121
122float ViewportNode::gamma() const
123{
124 return m_gamma;
125}
126
127void ViewportNode::setGamma(float gamma)
128{
129 m_gamma = gamma;
130}
131
132QRectF ViewportNode::computeViewport(const QRectF &childViewport, const ViewportNode *parentViewport)
133{
134 QRectF vp(parentViewport->xMin(),
135 parentViewport->yMin(),
136 parentViewport->xMax(),
137 parentViewport->yMax());
138
139 if (childViewport.isEmpty()) {
140 return vp;
141 } else {
142 return QRectF(vp.x() + vp.width() * childViewport.x(),
143 vp.y() + vp.height() * childViewport.y(),
144 vp.width() * childViewport.width(),
145 vp.height() * childViewport.height());
146 }
147}
148
149} // namespace Render
150} // namespace Qt3DRender
151
152QT_END_NAMESPACE
153

source code of qt3d/src/render/framegraph/viewportnode.cpp