summaryrefslogtreecommitdiffstats
path: root/examples/widgets/graphicsview
diff options
context:
space:
mode:
Diffstat (limited to 'examples/widgets/graphicsview')
-rw-r--r--examples/widgets/graphicsview/boxes/glbuffers.cpp4
-rw-r--r--examples/widgets/graphicsview/boxes/qtbox.cpp2
-rw-r--r--examples/widgets/graphicsview/boxes/scene.cpp15
-rw-r--r--examples/widgets/graphicsview/boxes/scene.h2
-rw-r--r--examples/widgets/graphicsview/boxes/trackball.cpp8
-rw-r--r--examples/widgets/graphicsview/collidingmice/main.cpp1
-rw-r--r--examples/widgets/graphicsview/collidingmice/mouse.cpp30
-rw-r--r--examples/widgets/graphicsview/diagramscene/arrow.cpp17
-rw-r--r--examples/widgets/graphicsview/dragdroprobot/coloritem.cpp4
-rw-r--r--examples/widgets/graphicsview/dragdroprobot/main.cpp1
-rw-r--r--examples/widgets/graphicsview/elasticnodes/edge.cpp28
-rw-r--r--examples/widgets/graphicsview/elasticnodes/graphwidget.cpp3
-rw-r--r--examples/widgets/graphicsview/elasticnodes/main.cpp1
13 files changed, 52 insertions, 64 deletions
diff --git a/examples/widgets/graphicsview/boxes/glbuffers.cpp b/examples/widgets/graphicsview/boxes/glbuffers.cpp
index 1481292e76..851cd17796 100644
--- a/examples/widgets/graphicsview/boxes/glbuffers.cpp
+++ b/examples/widgets/graphicsview/boxes/glbuffers.cpp
@@ -50,11 +50,11 @@
#include "glbuffers.h"
#include <QtGui/qmatrix4x4.h>
-
+#include <QtCore/qmath.h>
void qgluPerspective(GLdouble fovy, GLdouble aspect, GLdouble zNear, GLdouble zFar)
{
- const GLdouble ymax = zNear * tan(fovy * M_PI / 360.0);
+ const GLdouble ymax = zNear * tan(qDegreesToRadians(fovy) / 2.0);
const GLdouble ymin = -ymax;
const GLdouble xmin = ymin * aspect;
const GLdouble xmax = ymax * aspect;
diff --git a/examples/widgets/graphicsview/boxes/qtbox.cpp b/examples/widgets/graphicsview/boxes/qtbox.cpp
index 9a19985fac..3a184dd0b6 100644
--- a/examples/widgets/graphicsview/boxes/qtbox.cpp
+++ b/examples/widgets/graphicsview/boxes/qtbox.cpp
@@ -414,7 +414,7 @@ void QtBox::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWi
CircleItem::CircleItem(int size, int x, int y) : ItemBase(size, x, y)
{
- m_color = QColor::fromHsv(rand() % 360, 255, 255);
+ m_color = QColor::fromHsv(QRandomGenerator::global()->bounded(360), 255, 255);
}
void CircleItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
diff --git a/examples/widgets/graphicsview/boxes/scene.cpp b/examples/widgets/graphicsview/boxes/scene.cpp
index 9ac429c667..f51cad99ac 100644
--- a/examples/widgets/graphicsview/boxes/scene.cpp
+++ b/examples/widgets/graphicsview/boxes/scene.cpp
@@ -50,9 +50,10 @@
#include <QDebug>
#include "scene.h"
+#include <QtCore/QRandomGenerator>
#include <QtGui/qmatrix4x4.h>
#include <QtGui/qvector3d.h>
-#include <cmath>
+#include <qmath.h>
#include "3rdparty/fbm.h"
@@ -868,11 +869,12 @@ void Scene::renderCubemaps()
QVector3D center;
+ const float eachAngle = 2 * M_PI / m_cubemaps.size();
for (int i = m_frame % N; i < m_cubemaps.size(); i += N) {
if (0 == m_cubemaps[i])
continue;
- float angle = 2.0f * PI * i / m_cubemaps.size();
+ float angle = i * eachAngle;
center = m_trackBalls[1].rotation().rotatedVector(QVector3D(std::cos(angle), std::sin(angle), 0.0f));
@@ -1071,13 +1073,16 @@ void Scene::newItem(ItemDialog::ItemType type)
QSize size = sceneRect().size().toSize();
switch (type) {
case ItemDialog::QtBoxItem:
- addItem(new QtBox(64, rand() % (size.width() - 64) + 32, rand() % (size.height() - 64) + 32));
+ addItem(new QtBox(64, QRandomGenerator::global()->bounded(size.width() - 64) + 32,
+ QRandomGenerator::global()->bounded(size.height() - 64) + 32));
break;
case ItemDialog::CircleItem:
- addItem(new CircleItem(64, rand() % (size.width() - 64) + 32, rand() % (size.height() - 64) + 32));
+ addItem(new CircleItem(64, QRandomGenerator::global()->bounded(size.width() - 64) + 32,
+ QRandomGenerator::global()->bounded(size.height() - 64) + 32));
break;
case ItemDialog::SquareItem:
- addItem(new SquareItem(64, rand() % (size.width() - 64) + 32, rand() % (size.height() - 64) + 32));
+ addItem(new SquareItem(64, QRandomGenerator::global()->bounded(size.width() - 64) + 32,
+ QRandomGenerator::global()->bounded(size.height() - 64) + 32));
break;
default:
break;
diff --git a/examples/widgets/graphicsview/boxes/scene.h b/examples/widgets/graphicsview/boxes/scene.h
index a2ba1d0b5a..ccb6f368cd 100644
--- a/examples/widgets/graphicsview/boxes/scene.h
+++ b/examples/widgets/graphicsview/boxes/scene.h
@@ -63,8 +63,6 @@
#include "glbuffers.h"
#include "qtbox.h"
-#define PI 3.14159265358979
-
QT_BEGIN_NAMESPACE
class QMatrix4x4;
QT_END_NAMESPACE
diff --git a/examples/widgets/graphicsview/boxes/trackball.cpp b/examples/widgets/graphicsview/boxes/trackball.cpp
index 15f3af77d1..794ce7ac37 100644
--- a/examples/widgets/graphicsview/boxes/trackball.cpp
+++ b/examples/widgets/graphicsview/boxes/trackball.cpp
@@ -50,6 +50,7 @@
#include "trackball.h"
#include "scene.h"
+#include <qmath.h>
#include <cmath>
//============================================================================//
@@ -101,10 +102,11 @@ void TrackBall::move(const QPointF& p, const QQuaternion &transformation)
case Plane:
{
QLineF delta(m_lastPos, p);
- m_angularVelocity = 180*delta.length() / (PI*msecs);
+ const float angleDelta = qRadiansToDegrees(float(delta.length()));
+ m_angularVelocity = angleDelta / msecs;
m_axis = QVector3D(-delta.dy(), delta.dx(), 0.0f).normalized();
m_axis = transformation.rotatedVector(m_axis);
- m_rotation = QQuaternion::fromAxisAndAngle(m_axis, 180 / PI * delta.length()) * m_rotation;
+ m_rotation = QQuaternion::fromAxisAndAngle(m_axis, angleDelta) * m_rotation;
}
break;
case Sphere:
@@ -124,7 +126,7 @@ void TrackBall::move(const QPointF& p, const QQuaternion &transformation)
currentPos3D.normalize();
m_axis = QVector3D::crossProduct(lastPos3D, currentPos3D);
- float angle = 180 / PI * std::asin(std::sqrt(QVector3D::dotProduct(m_axis, m_axis)));
+ float angle = qRadiansToDegrees(std::asin(m_axis.length()));
m_angularVelocity = angle / msecs;
m_axis.normalize();
diff --git a/examples/widgets/graphicsview/collidingmice/main.cpp b/examples/widgets/graphicsview/collidingmice/main.cpp
index a0659b9bc1..91aee70b86 100644
--- a/examples/widgets/graphicsview/collidingmice/main.cpp
+++ b/examples/widgets/graphicsview/collidingmice/main.cpp
@@ -60,7 +60,6 @@ static const int MouseCount = 7;
int main(int argc, char **argv)
{
QApplication app(argc, argv);
- qsrand(QTime(0, 0, 0).secsTo(QTime::currentTime()));
//! [0]
//! [1]
diff --git a/examples/widgets/graphicsview/collidingmice/mouse.cpp b/examples/widgets/graphicsview/collidingmice/mouse.cpp
index b94c650c18..14f887f6e3 100644
--- a/examples/widgets/graphicsview/collidingmice/mouse.cpp
+++ b/examples/widgets/graphicsview/collidingmice/mouse.cpp
@@ -52,12 +52,12 @@
#include <QGraphicsScene>
#include <QPainter>
+#include <QRandomGenerator>
#include <QStyleOption>
+#include <qmath.h>
-#include <math.h>
-
-static const double Pi = 3.14159265358979323846264338327950288419717;
-static double TwoPi = 2.0 * Pi;
+const qreal Pi = M_PI;
+const qreal TwoPi = 2 * M_PI;
static qreal normalizeAngle(qreal angle)
{
@@ -71,9 +71,9 @@ static qreal normalizeAngle(qreal angle)
//! [0]
Mouse::Mouse()
: angle(0), speed(0), mouseEyeDirection(0),
- color(qrand() % 256, qrand() % 256, qrand() % 256)
+ color(QRandomGenerator::global()->bounded(256), QRandomGenerator::global()->bounded(256), QRandomGenerator::global()->bounded(256))
{
- setRotation(qrand() % (360 * 16));
+ setRotation(QRandomGenerator::global()->bounded(360 * 16));
}
//! [0]
@@ -140,9 +140,7 @@ void Mouse::advance(int step)
//! [5]
QLineF lineToCenter(QPointF(0, 0), mapFromScene(0, 0));
if (lineToCenter.length() > 150) {
- qreal angleToCenter = ::acos(lineToCenter.dx() / lineToCenter.length());
- if (lineToCenter.dy() < 0)
- angleToCenter = TwoPi - angleToCenter;
+ qreal angleToCenter = std::atan2(lineToCenter.dy(), lineToCenter.dx());
angleToCenter = normalizeAngle((Pi - angleToCenter) + Pi / 2);
if (angleToCenter < Pi && angleToCenter > Pi / 4) {
@@ -171,9 +169,7 @@ void Mouse::advance(int step)
continue;
QLineF lineToMouse(QPointF(0, 0), mapFromItem(item, 0, 0));
- qreal angleToMouse = ::acos(lineToMouse.dx() / lineToMouse.length());
- if (lineToMouse.dy() < 0)
- angleToMouse = TwoPi - angleToMouse;
+ qreal angleToMouse = std::atan2(lineToMouse.dy(), lineToMouse.dx());
angleToMouse = normalizeAngle((Pi - angleToMouse) + Pi / 2);
if (angleToMouse >= 0 && angleToMouse < Pi / 2) {
@@ -190,16 +186,16 @@ void Mouse::advance(int step)
// Add some random movement
//! [10]
- if (dangerMice.size() > 1 && (qrand() % 10) == 0) {
- if (qrand() % 1)
- angle += (qrand() % 100) / 500.0;
+ if (dangerMice.size() > 1 && QRandomGenerator::global()->bounded(10) == 0) {
+ if (QRandomGenerator::global()->bounded(1))
+ angle += QRandomGenerator::global()->bounded(1 / 500.0);
else
- angle -= (qrand() % 100) / 500.0;
+ angle -= QRandomGenerator::global()->bounded(1 / 500.0);
}
//! [10]
//! [11]
- speed += (-50 + qrand() % 100) / 100.0;
+ speed += (-50 + QRandomGenerator::global()->bounded(100)) / 100.0;
qreal dx = ::sin(angle) * 10;
mouseEyeDirection = (qAbs(dx / 5) < 1) ? 0 : dx / 5;
diff --git a/examples/widgets/graphicsview/diagramscene/arrow.cpp b/examples/widgets/graphicsview/diagramscene/arrow.cpp
index 012b9ea2ed..88160d9399 100644
--- a/examples/widgets/graphicsview/diagramscene/arrow.cpp
+++ b/examples/widgets/graphicsview/diagramscene/arrow.cpp
@@ -51,13 +51,10 @@
#include "arrow.h"
-#include <math.h>
-
+#include <qmath.h>
#include <QPen>
#include <QPainter>
-const qreal Pi = 3.14;
-
//! [0]
Arrow::Arrow(DiagramItem *startItem, DiagramItem *endItem, QGraphicsItem *parent)
: QGraphicsLineItem(parent)
@@ -132,14 +129,12 @@ void Arrow::paint(QPainter *painter, const QStyleOptionGraphicsItem *,
setLine(QLineF(intersectPoint, myStartItem->pos()));
//! [5] //! [6]
- double angle = ::acos(line().dx() / line().length());
- if (line().dy() >= 0)
- angle = (Pi * 2) - angle;
+ double angle = std::atan2(-line().dy(), line().dx());
- QPointF arrowP1 = line().p1() + QPointF(sin(angle + Pi / 3) * arrowSize,
- cos(angle + Pi / 3) * arrowSize);
- QPointF arrowP2 = line().p1() + QPointF(sin(angle + Pi - Pi / 3) * arrowSize,
- cos(angle + Pi - Pi / 3) * arrowSize);
+ QPointF arrowP1 = line().p1() + QPointF(sin(angle + M_PI / 3) * arrowSize,
+ cos(angle + M_PI / 3) * arrowSize);
+ QPointF arrowP2 = line().p1() + QPointF(sin(angle + M_PI - M_PI / 3) * arrowSize,
+ cos(angle + M_PI - M_PI / 3) * arrowSize);
arrowHead.clear();
arrowHead << line().p1() << arrowP1 << arrowP2;
diff --git a/examples/widgets/graphicsview/dragdroprobot/coloritem.cpp b/examples/widgets/graphicsview/dragdroprobot/coloritem.cpp
index 64a715d31f..262e18a317 100644
--- a/examples/widgets/graphicsview/dragdroprobot/coloritem.cpp
+++ b/examples/widgets/graphicsview/dragdroprobot/coloritem.cpp
@@ -54,7 +54,7 @@
//! [0]
ColorItem::ColorItem()
- : color(qrand() % 256, qrand() % 256, qrand() % 256)
+ : color(QRandomGenerator::global()->bounded(256), QRandomGenerator::global()->bounded(256), QRandomGenerator::global()->bounded(256))
{
setToolTip(QString("QColor(%1, %2, %3)\n%4")
.arg(color.red()).arg(color.green()).arg(color.blue())
@@ -107,7 +107,7 @@ void ColorItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
//! [6]
static int n = 0;
- if (n++ > 2 && (qrand() % 3) == 0) {
+ if (n++ > 2 && QRandomGenerator::global()->bounded(3) == 0) {
QImage image(":/images/head.png");
mime->setImageData(image);
diff --git a/examples/widgets/graphicsview/dragdroprobot/main.cpp b/examples/widgets/graphicsview/dragdroprobot/main.cpp
index 20cec92d26..045e184569 100644
--- a/examples/widgets/graphicsview/dragdroprobot/main.cpp
+++ b/examples/widgets/graphicsview/dragdroprobot/main.cpp
@@ -73,7 +73,6 @@ int main(int argc, char **argv)
{
QApplication app(argc, argv);
- qsrand(QTime(0,0,0).secsTo(QTime::currentTime()));
//! [0]
//! [1]
QGraphicsScene scene(-200, -200, 400, 400);
diff --git a/examples/widgets/graphicsview/elasticnodes/edge.cpp b/examples/widgets/graphicsview/elasticnodes/edge.cpp
index e794e803cf..aec12b4225 100644
--- a/examples/widgets/graphicsview/elasticnodes/edge.cpp
+++ b/examples/widgets/graphicsview/elasticnodes/edge.cpp
@@ -51,13 +51,9 @@
#include "edge.h"
#include "node.h"
-#include <math.h>
-
+#include <qmath.h>
#include <QPainter>
-static const double Pi = 3.14159265358979323846264338327950288419717;
-static double TwoPi = 2.0 * Pi;
-
//! [0]
Edge::Edge(Node *sourceNode, Node *destNode)
: arrowSize(10)
@@ -139,18 +135,16 @@ void Edge::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
//! [6]
// Draw the arrows
- double angle = ::acos(line.dx() / line.length());
- if (line.dy() >= 0)
- angle = TwoPi - angle;
-
- QPointF sourceArrowP1 = sourcePoint + QPointF(sin(angle + Pi / 3) * arrowSize,
- cos(angle + Pi / 3) * arrowSize);
- QPointF sourceArrowP2 = sourcePoint + QPointF(sin(angle + Pi - Pi / 3) * arrowSize,
- cos(angle + Pi - Pi / 3) * arrowSize);
- QPointF destArrowP1 = destPoint + QPointF(sin(angle - Pi / 3) * arrowSize,
- cos(angle - Pi / 3) * arrowSize);
- QPointF destArrowP2 = destPoint + QPointF(sin(angle - Pi + Pi / 3) * arrowSize,
- cos(angle - Pi + Pi / 3) * arrowSize);
+ double angle = std::atan2(-line.dy(), line.dx());
+
+ QPointF sourceArrowP1 = sourcePoint + QPointF(sin(angle + M_PI / 3) * arrowSize,
+ cos(angle + M_PI / 3) * arrowSize);
+ QPointF sourceArrowP2 = sourcePoint + QPointF(sin(angle + M_PI - M_PI / 3) * arrowSize,
+ cos(angle + M_PI - M_PI / 3) * arrowSize);
+ QPointF destArrowP1 = destPoint + QPointF(sin(angle - M_PI / 3) * arrowSize,
+ cos(angle - M_PI / 3) * arrowSize);
+ QPointF destArrowP2 = destPoint + QPointF(sin(angle - M_PI + M_PI / 3) * arrowSize,
+ cos(angle - M_PI + M_PI / 3) * arrowSize);
painter->setBrush(Qt::black);
painter->drawPolygon(QPolygonF() << line.p1() << sourceArrowP1 << sourceArrowP2);
diff --git a/examples/widgets/graphicsview/elasticnodes/graphwidget.cpp b/examples/widgets/graphicsview/elasticnodes/graphwidget.cpp
index 844c8f8aac..4259aab803 100644
--- a/examples/widgets/graphicsview/elasticnodes/graphwidget.cpp
+++ b/examples/widgets/graphicsview/elasticnodes/graphwidget.cpp
@@ -55,6 +55,7 @@
#include <math.h>
#include <QKeyEvent>
+#include <QRandomGenerator>
//! [0]
GraphWidget::GraphWidget(QWidget *parent)
@@ -247,7 +248,7 @@ void GraphWidget::shuffle()
{
foreach (QGraphicsItem *item, scene()->items()) {
if (qgraphicsitem_cast<Node *>(item))
- item->setPos(-150 + qrand() % 300, -150 + qrand() % 300);
+ item->setPos(-150 + QRandomGenerator::global()->bounded(300), -150 + QRandomGenerator::global()->bounded(300));
}
}
diff --git a/examples/widgets/graphicsview/elasticnodes/main.cpp b/examples/widgets/graphicsview/elasticnodes/main.cpp
index 75cc4b0f69..1e372a9f6d 100644
--- a/examples/widgets/graphicsview/elasticnodes/main.cpp
+++ b/examples/widgets/graphicsview/elasticnodes/main.cpp
@@ -57,7 +57,6 @@
int main(int argc, char **argv)
{
QApplication app(argc, argv);
- qsrand(QTime(0,0,0).secsTo(QTime::currentTime()));
GraphWidget *widget = new GraphWidget;
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-01 19:13:02 +0000