diff options
Diffstat (limited to 'examples/opengl/legacy/samplebuffers/glwidget.cpp')
| -rw-r--r-- | examples/opengl/legacy/samplebuffers/glwidget.cpp | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/examples/opengl/legacy/samplebuffers/glwidget.cpp b/examples/opengl/legacy/samplebuffers/glwidget.cpp index 14c59c9143..da30de4d55 100644 --- a/examples/opengl/legacy/samplebuffers/glwidget.cpp +++ b/examples/opengl/legacy/samplebuffers/glwidget.cpp @@ -49,7 +49,7 @@ ****************************************************************************/ #include "glwidget.h" -#include <math.h> +#include <qmath.h> #ifndef GL_MULTISAMPLE #define GL_MULTISAMPLE 0x809D @@ -116,7 +116,6 @@ void GLWidget::timerEvent(QTimerEvent *) void GLWidget::makeObject() { QColor qtGreen(QColor::fromCmykF(0.40, 0.0, 1.0, 0.0)); - const double Pi = 3.14159265358979323846; const int NumSectors = 15; GLdouble x1 = +0.06; GLdouble y1 = -0.14; @@ -130,18 +129,19 @@ void GLWidget::makeObject() list = glGenLists(1); glNewList(list, GL_COMPILE); { + const double sectorAngle = 2 * M_PI / NumSectors; for (int i = 0; i < NumSectors; ++i) { - double angle1 = (i * 2 * Pi) / NumSectors; - GLdouble x5 = 0.30 * sin(angle1); - GLdouble y5 = 0.30 * cos(angle1); - GLdouble x6 = 0.20 * sin(angle1); - GLdouble y6 = 0.20 * cos(angle1); - - double angle2 = ((i + 1) * 2 * Pi) / NumSectors; - GLdouble x7 = 0.20 * sin(angle2); - GLdouble y7 = 0.20 * cos(angle2); - GLdouble x8 = 0.30 * sin(angle2); - GLdouble y8 = 0.30 * cos(angle2); + double angle = i * sectorAngle; + GLdouble x5 = 0.30 * sin(angle); + GLdouble y5 = 0.30 * cos(angle); + GLdouble x6 = 0.20 * sin(angle); + GLdouble y6 = 0.20 * cos(angle); + + angle += sectorAngle; + GLdouble x7 = 0.20 * sin(angle); + GLdouble y7 = 0.20 * cos(angle); + GLdouble x8 = 0.30 * sin(angle); + GLdouble y8 = 0.30 * cos(angle); qglColor(qtGreen); quad(GL_QUADS, x5, y5, x6, y6, x7, y7, x8, y8); |