2 files changed, 4 insertions, 12 deletions
diff --git a/examples/widgets/effects/blurpicker/blurpicker.cpp b/examples/widgets/effects/blurpicker/blurpicker.cpp
index 43823bed30..a00af2144a 100644
--- a/examples/widgets/effects/blurpicker/blurpicker.cpp
+++ b/examples/widgets/effects/blurpicker/blurpicker.cpp
@@ -52,13 +52,9 @@
 
 #include <QtWidgets>
 #include <QtCore/qmath.h>
-
+#include <qmath.h>
 #include "blureffect.h"
 
-#ifndef M_PI
-#define M_PI 3.14159265358979323846
-#endif
-
 BlurPicker::BlurPicker(QWidget *parent): QGraphicsView(parent), m_index(0.0), m_animation(this, "index")
 {
     setBackgroundBrush(QPixmap(":/images/background.jpg"));
@@ -84,9 +80,10 @@ void BlurPicker::setIndex(qreal index)
     m_index = index;
 
     qreal baseline = 0;
+    const qreal iconAngle = 2 * M_PI / m_icons.count();
     for (int i = 0; i < m_icons.count(); ++i) {
         QGraphicsItem *icon = m_icons[i];
-        qreal a = ((i + m_index) * 2 * M_PI) / m_icons.count();
+        qreal a = (i + m_index) * iconAngle;
         qreal xs = 170 * qSin(a);
         qreal ys = 100 * qCos(a);
         QPointF pos(xs, ys);
diff --git a/examples/widgets/effects/lighting/lighting.cpp b/examples/widgets/effects/lighting/lighting.cpp
index 68350f32b7..1ba7dd9ce7 100644
--- a/examples/widgets/effects/lighting/lighting.cpp
+++ b/examples/widgets/effects/lighting/lighting.cpp
@@ -49,14 +49,9 @@
 ****************************************************************************/
 
 #include "lighting.h"
-
 #include <QtWidgets>
 #include <QtCore/qmath.h>
 
-#ifndef M_PI
-#define M_PI 3.14159265358979323846
-#endif
-
 Lighting::Lighting(QWidget *parent): QGraphicsView(parent), angle(0.0)
 {
     setScene(&m_scene);
@@ -120,7 +115,7 @@ void Lighting::setupScene()
 
 void Lighting::animate()
 {
-    angle += (M_PI / 30);
+    angle += qDegreesToRadians(qreal(6));
     qreal xs = 200 * qSin(angle) - 40 + 25;
     qreal ys = 200 * qCos(angle) - 40 + 25;
     m_lightSource->setPos(xs, ys);