main.cpp 范例文件

texturesurface/main.cpp
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#include "surfacegraph.h" #include <QtWidgets/QApplication> #include <QtWidgets/QWidget> #include <QtWidgets/QHBoxLayout> #include <QtWidgets/QVBoxLayout> #include <QtWidgets/QGroupBox> #include <QtWidgets/QCheckBox> #include <QtWidgets/QLabel> #include <QtWidgets/QMessageBox> #include <QtGui/QScreen> #include <QtGui/QPainter> int main(int argc, char **argv) { QApplication app(argc, argv); Q3DSurface *graph = new Q3DSurface(); QWidget *container = QWidget::createWindowContainer(graph); if (!graph->hasContext()) { QMessageBox msgBox; msgBox.setText("Couldn't initialize the OpenGL context."); msgBox.exec(); return -1; } QSize screenSize = graph->screen()->size(); container->setMinimumSize(QSize(screenSize.width() / 2, screenSize.height() / 1.6)); container->setMaximumSize(screenSize); container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding); container->setFocusPolicy(Qt::StrongFocus); QWidget *widget = new QWidget; QHBoxLayout *hLayout = new QHBoxLayout(widget); QVBoxLayout *vLayout = new QVBoxLayout(); hLayout->addWidget(container, 1); hLayout->addLayout(vLayout); vLayout->setAlignment(Qt::AlignTop); widget->setWindowTitle(QStringLiteral("Textured surface example")); QCheckBox *enableTexture = new QCheckBox(widget); enableTexture->setText(QStringLiteral("Surface texture")); int height = 400; int width = 100; int border = 10; QLinearGradient gr(0, 0, 1, height - 2 * border); gr.setColorAt(1.0f, Qt::black); gr.setColorAt(0.8f, Qt::darkGreen); gr.setColorAt(0.6f, Qt::green); gr.setColorAt(0.4f, Qt::yellow); gr.setColorAt(0.2f, Qt::red); gr.setColorAt(0.0f, Qt::darkRed); QPixmap pm(width, height); pm.fill(Qt::transparent); QPainter pmp(&pm); pmp.setBrush(QBrush(gr)); pmp.setPen(Qt::NoPen); pmp.drawRect(border, border, 35, height - 2 * border); pmp.setPen(Qt::black); int step = (height - 2 * border) / 5; for (int i = 0; i < 6; i++) { int yPos = i * step + border; pmp.drawLine(border, yPos, 55, yPos); pmp.drawText(60, yPos + 2, QString("%1 m").arg(550 - (i * 110))); } QLabel *label = new QLabel(widget); label->setPixmap(pm); QGroupBox *heightMapGroupBox = new QGroupBox(QStringLiteral("Highlight color map")); QVBoxLayout *colorMapVBox = new QVBoxLayout; colorMapVBox->addWidget(label); heightMapGroupBox->setLayout(colorMapVBox); vLayout->addWidget(enableTexture); vLayout->addWidget(heightMapGroupBox); widget->show(); SurfaceGraph *modifier = new SurfaceGraph(graph); QObject::connect(enableTexture, &QCheckBox::stateChanged, modifier, &SurfaceGraph::toggleSurfaceTexture); enableTexture->setChecked(true); return app.exec(); }