3 files changed, 6 insertions, 6 deletions
diff --git a/src/gui/math3d/qmatrix4x4.cpp b/src/gui/math3d/qmatrix4x4.cpp
index 6b18e1ab03..d016f07522 100644
--- a/src/gui/math3d/qmatrix4x4.cpp
+++ b/src/gui/math3d/qmatrix4x4.cpp
@@ -1128,7 +1128,7 @@ void QMatrix4x4::rotate(float angle, float x, float y, float z)
         s = 0.0f;
         c = -1.0f;
     } else {
-        float a = angle * M_PI / 180.0f;
+        float a = qDegreesToRadians(angle);
         c = std::cos(a);
         s = std::sin(a);
     }
@@ -1237,7 +1237,7 @@ void QMatrix4x4::projectedRotate(float angle, float x, float y, float z)
         s = 0.0f;
         c = -1.0f;
     } else {
-        float a = angle * M_PI / 180.0f;
+        float a = qDegreesToRadians(angle);
         c = std::cos(a);
         s = std::sin(a);
     }
@@ -1496,7 +1496,7 @@ void QMatrix4x4::perspective(float verticalAngle, float aspectRatio, float nearP
 
     // Construct the projection.
     QMatrix4x4 m(1);
-    float radians = (verticalAngle / 2.0f) * M_PI / 180.0f;
+    float radians = qDegreesToRadians(verticalAngle / 2.0f);
     float sine = std::sin(radians);
     if (sine == 0.0f)
         return;
diff --git a/src/gui/math3d/qquaternion.cpp b/src/gui/math3d/qquaternion.cpp
index e3262c8830..fe1b0425a8 100644
--- a/src/gui/math3d/qquaternion.cpp
+++ b/src/gui/math3d/qquaternion.cpp
@@ -408,7 +408,7 @@ QQuaternion QQuaternion::fromAxisAndAngle(const QVector3D& axis, float angle)
     // http://www.j3d.org/matrix_faq/matrfaq_latest.html#Q56
     // We normalize the result just in case the values are close
     // to zero, as suggested in the above FAQ.
-    float a = (angle / 2.0f) * M_PI / 180.0f;
+    float a = qDegreesToRadians(angle / 2.0f);
     float s = std::sin(a);
     float c = std::cos(a);
     QVector3D ax = axis.normalized();
@@ -467,7 +467,7 @@ QQuaternion QQuaternion::fromAxisAndAngle
         y /= length;
         z /= length;
     }
-    float a = (angle / 2.0f) * M_PI / 180.0f;
+    float a = qDegreesToRadians(angle / 2.0f);
     float s = std::sin(a);
     float c = std::cos(a);
     return QQuaternion(c, x * s, y * s, z * s).normalized();
diff --git a/src/gui/text/qdistancefield.cpp b/src/gui/text/qdistancefield.cpp
index 746200fd9c..af13b96c32 100644
--- a/src/gui/text/qdistancefield.cpp
+++ b/src/gui/text/qdistancefield.cpp
@@ -516,7 +516,7 @@ static void makeDistanceField(QDistanceFieldData *data, const QPainterPath &path
     for (int i = 0; i < imgWidth * imgHeight; ++i)
         bits[i] = exteriorColor;
 
-    const qreal angleStep = qreal(15 * 3.141592653589793238 / 180);
+    const qreal angleStep = qDegreesToRadians(qreal(15));
     const QPoint rotation(qRound(qCos(angleStep) * 0x4000),
                           qRound(qSin(angleStep) * 0x4000)); // 2:14 signed