diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/svg/network/bearercloud/bearercloud.cpp | 11 | ||||
| -rw-r--r-- | examples/svg/opengl/framebufferobject/glwidget.cpp | 37 |
2 files changed, 18 insertions, 30 deletions
diff --git a/examples/svg/network/bearercloud/bearercloud.cpp b/examples/svg/network/bearercloud/bearercloud.cpp index 5b817e7..c72a07e 100644 --- a/examples/svg/network/bearercloud/bearercloud.cpp +++ b/examples/svg/network/bearercloud/bearercloud.cpp @@ -53,16 +53,12 @@ #include <QGraphicsTextItem> #include <QTimer> -#include <QDateTime> #include <QHostInfo> +#include <QRandomGenerator> #include <QDebug> -#include <math.h> - -#ifndef M_PI -#define M_PI 3.14159265358979323846 -#endif +#include <qmath.h> //! [0] BearerCloud::BearerCloud(QObject *parent) @@ -70,9 +66,8 @@ BearerCloud::BearerCloud(QObject *parent) { setSceneRect(-300, -300, 600, 600); - qsrand(QDateTime::currentDateTime().toTime_t()); - offset[QNetworkConfiguration::Active] = 2 * M_PI * qrand() / RAND_MAX; + offset[QNetworkConfiguration::Active] = QRandomGenerator::bounded(2 * M_PI); offset[QNetworkConfiguration::Discovered] = offset[QNetworkConfiguration::Active] + M_PI / 6; offset[QNetworkConfiguration::Defined] = offset[QNetworkConfiguration::Discovered] - M_PI / 6; offset[QNetworkConfiguration::Undefined] = offset[QNetworkConfiguration::Undefined] + M_PI / 6; diff --git a/examples/svg/opengl/framebufferobject/glwidget.cpp b/examples/svg/opengl/framebufferobject/glwidget.cpp index f778918..a3c0d51 100644 --- a/examples/svg/opengl/framebufferobject/glwidget.cpp +++ b/examples/svg/opengl/framebufferobject/glwidget.cpp @@ -49,10 +49,9 @@ ****************************************************************************/ #include <QtGui/QImage> +#include <qmath.h> #include "glwidget.h" -#include <math.h> - #ifndef GL_MULTISAMPLE #define GL_MULTISAMPLE 0x809D #endif @@ -295,8 +294,6 @@ void GLWidget::restoreGLState() glPopAttrib(); } -#define PI 3.14159 - void GLWidget::timerEvent(QTimerEvent *) { if (QApplication::mouseButtons() != 0) @@ -309,31 +306,27 @@ void GLWidget::timerEvent(QTimerEvent *) else if (!scale_in && scale < .5f) scale_in = true; - scale = scale_in ? scale + scale*0.01f : scale-scale*0.01f; + scale *= scale_in ? 1.01f : 0.99f; rot_z += 0.3f; rot_x += 0.1f; - int dx, dy; // disturbance point - float s, v, W, t; - int i, j; - static float wt[128][128]; + static float wt = 0.0; + wt += 0.1f; + const int width = logo.width(); + const int dx = width >> 1, dy = dx; // disturbance point + const float W = .3f; + const float v = -4; // wave speed const int AMP = 5; - dx = dy = width >> 1; - - W = .3f; - v = -4; // wave speed - - for (i = 0; i < width; ++i) { - for ( j = 0; j < width; ++j) { - s = sqrt((double) ((j - dx) * (j - dx) + (i - dy) * (i - dy))); - wt[i][j] += 0.1f; - t = s / v; + for (int i = 0; i < width; ++i) { + for (int j = 0; j < width; ++j) { + const float s = hypot(j - dx, i - dy); + const double raw = AMP * sin(2 * M_PI * W * (wt + s / v)); if (s != 0) - wave[i*width + j] = AMP * sin(2 * PI * W * (wt[i][j] + t)) / (0.2*(s + 2)); + wave[i * width + j] = raw / (0.2 * (s + 2)); else - wave[i*width + j] = AMP * sin(2 * PI * W * (wt[i][j] + t)); - } + wave[i * width + j] = raw; + } } } |