彻底改版2.0

2021-11-17 16:41:30 +08:00
parent a7f4347959
commit ebfd531a91
2622 changed files with 8915 additions and 7263 deletions
--- a/control/smoothcurve/frmsmoothcurve.cpp
+++ b/control/smoothcurve/frmsmoothcurve.cpp
@@ -0,0 +1,82 @@
+#include "frmsmoothcurve.h"
+#include "ui_frmsmoothcurve.h"
+#include "smoothcurve.h"
+#include "qpainter.h"
+#include "qdatetime.h"
+#include "qdebug.h"
+
+#define TIMEMS QTime::currentTime().toString("hh:mm:ss zzz")
+
+frmSmoothCurve::frmSmoothCurve(QWidget *parent) : QWidget(parent), ui(new Ui::frmSmoothCurve)
+{
+    ui->setupUi(this);
+
+    //初始化随机数种子
+    srand(QDateTime::currentDateTime().toMSecsSinceEpoch());
+
+    //随机生成曲线上的点
+    int x = -300;
+    while (x < 300) {
+        datas << QPointF(x, rand() % 300 - 100);
+        x += qMin(rand() % 30 + 5, 300);
+    }
+
+    //正常曲线
+    pathNormal.moveTo(datas.at(0));
+    for (int i = 1; i < datas.size(); ++i) {
+        pathNormal.lineTo(datas.at(i));
+    }
+
+    //平滑曲线1
+    //qDebug() << TIMEMS << "createSmoothCurve start";
+    pathSmooth1 = SmoothCurve::createSmoothCurve(datas);
+    //qDebug() << TIMEMS << "createSmoothCurve stop";
+
+    //平滑曲线2
+    //qDebug() << TIMEMS << "createSmoothCurve2 start";
+    pathSmooth2 = SmoothCurve::createSmoothCurve2(datas);
+    //qDebug() << TIMEMS << "createSmoothCurve2 stop";
+
+    ui->ckShowPoint->setChecked(true);
+    connect(ui->ckShowPoint, SIGNAL(clicked(bool)), this, SLOT(update()));
+    connect(ui->rbtnPathNormal, SIGNAL(clicked(bool)), this, SLOT(update()));
+    connect(ui->rbtnPathSmooth1, SIGNAL(clicked(bool)), this, SLOT(update()));
+    connect(ui->rbtnPathSmooth2, SIGNAL(clicked(bool)), this, SLOT(update()));
+}
+
+frmSmoothCurve::~frmSmoothCurve()
+{
+    delete ui;
+}
+
+void frmSmoothCurve::paintEvent(QPaintEvent *)
+{
+    QPainter painter(this);
+    painter.setRenderHint(QPainter::Antialiasing);
+    painter.translate(width() / 2, height() / 2);
+    painter.scale(1, -1);
+
+    //画坐标轴
+    painter.setPen(QColor(180, 180, 180));
+    painter.drawLine(-250, 0, 250, 0);
+    painter.drawLine(0, 150, 0, -150);
+
+    //根据选择绘制不同的曲线路径
+    painter.setPen(QPen(QColor(80, 80, 80), 2));
+    if (ui->rbtnPathSmooth1->isChecked()) {
+        painter.drawPath(pathSmooth1);
+    } else if (ui->rbtnPathSmooth2->isChecked()) {
+        painter.drawPath(pathSmooth2);
+    } else {
+        painter.drawPath(pathNormal);
+    }
+
+    //如果曲线上的点可见则显示出来
+    if (ui->ckShowPoint->isChecked()) {
+        painter.setPen(Qt::black);
+        painter.setBrush(Qt::gray);
+        foreach (QPointF point, datas) {
+            painter.drawEllipse(point, 3, 3);
+        }
+    }
+}
--- a/control/smoothcurve/frmsmoothcurve.h
+++ b/control/smoothcurve/frmsmoothcurve.h
@@ -0,0 +1,32 @@
+#ifndef FRMSMOOTHCURVE_H
+#define FRMSMOOTHCURVE_H
+
+#include <QWidget>
+#include <QList>
+#include <QPointF>
+#include <QPainterPath>
+
+namespace Ui {
+class frmSmoothCurve;
+}
+
+class frmSmoothCurve : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit frmSmoothCurve(QWidget *parent = 0);
+    ~frmSmoothCurve();
+
+protected:
+    void paintEvent(QPaintEvent *event);
+
+private:
+    Ui::frmSmoothCurve *ui;
+    QVector<QPointF> datas;     //曲线上的点
+    QPainterPath pathNormal;    //正常曲线
+    QPainterPath pathSmooth1;   //平滑曲线1
+    QPainterPath pathSmooth2;   //平滑曲线2
+};
+
+#endif // FRMSMOOTHCURVE_H
--- a/control/smoothcurve/frmsmoothcurve.ui
+++ b/control/smoothcurve/frmsmoothcurve.ui
@@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>frmSmoothCurve</class>
+ <widget class="QWidget" name="frmSmoothCurve">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>800</width>
+    <height>600</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Widget</string>
+  </property>
+  <layout class="QGridLayout" name="gridLayout">
+   <item row="0" column="5">
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>473</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+   <item row="1" column="2">
+    <widget class="QRadioButton" name="rbtnPathSmooth1">
+     <property name="text">
+      <string>平滑曲线1</string>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="3">
+    <widget class="QRadioButton" name="rbtnPathSmooth2">
+     <property name="text">
+      <string>平滑曲线2</string>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="0">
+    <widget class="QCheckBox" name="ckShowPoint">
+     <property name="text">
+      <string>显示坐标点</string>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="4">
+    <spacer name="horizontalSpacer">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>549</width>
+       <height>20</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+   <item row="1" column="1">
+    <widget class="QRadioButton" name="rbtnPathNormal">
+     <property name="text">
+      <string>正常曲线</string>
+     </property>
+     <property name="checked">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <layoutdefault spacing="6" margin="11"/>
+ <resources/>
+ <connections/>
+</ui>
--- a/control/smoothcurve/main.cpp
+++ b/control/smoothcurve/main.cpp
@@ -0,0 +1,31 @@
+#pragma execution_character_set("utf-8")
+
+#include "frmsmoothcurve.h"
+#include <QApplication>
+#include <QTextCodec>
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+    a.setFont(QFont("Microsoft Yahei", 9));
+
+#if (QT_VERSION < QT_VERSION_CHECK(5,0,0))
+#if _MSC_VER
+    QTextCodec *codec = QTextCodec::codecForName("gbk");
+#else
+    QTextCodec *codec = QTextCodec::codecForName("utf-8");
+#endif
+    QTextCodec::setCodecForLocale(codec);
+    QTextCodec::setCodecForCStrings(codec);
+    QTextCodec::setCodecForTr(codec);
+#else
+    QTextCodec *codec = QTextCodec::codecForName("utf-8");
+    QTextCodec::setCodecForLocale(codec);
+#endif
+
+    frmSmoothCurve w;
+    w.setWindowTitle("平滑曲线");
+    w.show();
+
+    return a.exec();
+}
--- a/control/smoothcurve/smoothcurve.cpp
+++ b/control/smoothcurve/smoothcurve.cpp
@@ -0,0 +1,120 @@
+#include "smoothcurve.h"
+#include "qdebug.h"
+
+QPainterPath SmoothCurve::createSmoothCurve(const QVector<QPointF> &points)
+{
+    QPainterPath path;
+    int len = points.size();
+    if (len < 2) {
+        return path;
+    }
+
+    QVector<QPointF> firstControlPoints;
+    QVector<QPointF> secondControlPoints;
+    calculateControlPoints(points, &firstControlPoints, &secondControlPoints);
+    path.moveTo(points[0].x(), points[0].y());
+
+    for (int i = 0; i < len - 1; ++i) {
+        path.cubicTo(firstControlPoints[i], secondControlPoints[i], points[i + 1]);
+    }
+
+    return path;
+}
+
+QPainterPath SmoothCurve::createSmoothCurve2(const QVector<QPointF> &points)
+{
+    //采用Qt原生方法不做任何处理
+    int count = points.count();
+    if (count == 0) {
+        return QPainterPath();
+    }
+
+    QPainterPath path(points.at(0));
+    for (int i = 0; i < count - 1; ++i) {
+        //控制点的 x 坐标为 sp 与 ep 的 x 坐标和的一半
+        //第一个控制点 c1 的 y 坐标为起始点 sp 的 y 坐标
+        //第二个控制点 c2 的 y 坐标为结束点 ep 的 y 坐标
+        QPointF sp = points.at(i);
+        QPointF ep = points.at(i + 1);
+        QPointF c1 = QPointF((sp.x() + ep.x()) / 2, sp.y());
+        QPointF c2 = QPointF((sp.x() + ep.x()) / 2, ep.y());
+        path.cubicTo(c1, c2, ep);
+    }
+
+    return path;
+}
+
+void SmoothCurve::calculateFirstControlPoints(double *&result, const double *rhs, int n)
+{
+    result = new double[n];
+    double *tmp = new double[n];
+    double b = 2.0;
+    result[0] = rhs[0] / b;
+
+    for (int i = 1; i < n; i++) {
+        tmp[i] = 1 / b;
+        b = (i < n - 1 ? 4.0 : 3.5) - tmp[i];
+        result[i] = (rhs[i] - result[i - 1]) / b;
+    }
+
+    for (int i = 1; i < n; i++) {
+        result[n - i - 1] -= tmp[n - i] * result[n - i];
+    }
+
+    delete tmp;
+}
+
+void SmoothCurve::calculateControlPoints(const QVector<QPointF> &datas,
+                                         QVector<QPointF> *firstControlPoints,
+                                         QVector<QPointF> *secondControlPoints)
+{
+    int n = datas.size() - 1;
+    for (int i = 0; i < n; ++i) {
+        firstControlPoints->append(QPointF());
+        secondControlPoints->append(QPointF());
+    }
+
+    if (n == 1) {
+        (*firstControlPoints)[0].rx() = (2 * datas[0].x() + datas[1].x()) / 3;
+        (*firstControlPoints)[0].ry() = (2 * datas[0].y() + datas[1].y()) / 3;
+        (*secondControlPoints)[0].rx() = 2 * (*firstControlPoints)[0].x() - datas[0].x();
+        (*secondControlPoints)[0].ry() = 2 * (*firstControlPoints)[0].y() - datas[0].y();
+        return;
+    }
+
+    double *xs = 0;
+    double *ys = 0;
+    double *rhsx = new double[n];
+    double *rhsy = new double[n];
+
+    for (int i = 1; i < n - 1; ++i) {
+        rhsx[i] = 4 * datas[i].x() + 2 * datas[i + 1].x();
+        rhsy[i] = 4 * datas[i].y() + 2 * datas[i + 1].y();
+    }
+
+    rhsx[0] = datas[0].x() + 2 * datas[1].x();
+    rhsx[n - 1] = (8 * datas[n - 1].x() + datas[n].x()) / 2.0;
+    rhsy[0] = datas[0].y() + 2 * datas[1].y();
+    rhsy[n - 1] = (8 * datas[n - 1].y() + datas[n].y()) / 2.0;
+
+    calculateFirstControlPoints(xs, rhsx, n);
+    calculateFirstControlPoints(ys, rhsy, n);
+
+    for (int i = 0; i < n; ++i) {
+        (*firstControlPoints)[i].rx() = xs[i];
+        (*firstControlPoints)[i].ry() = ys[i];
+
+        if (i < n - 1) {
+            (*secondControlPoints)[i].rx() = 2 * datas[i + 1].x() - xs[i + 1];
+            (*secondControlPoints)[i].ry() = 2 * datas[i + 1].y() - ys[i + 1];
+        } else {
+            (*secondControlPoints)[i].rx() = (datas[n].x() + xs[n - 1]) / 2;
+            (*secondControlPoints)[i].ry() = (datas[n].y() + ys[n - 1]) / 2;
+        }
+    }
+
+    delete xs;
+    delete ys;
+    delete rhsx;
+    delete rhsy;
+}
--- a/control/smoothcurve/smoothcurve.h
+++ b/control/smoothcurve/smoothcurve.h
@@ -0,0 +1,28 @@
+#ifndef SMOOTHCURVE_H
+#define SMOOTHCURVE_H
+
+#include <QObject>
+#include <QVector>
+#include <QPointF>
+#include <QPainterPath>
+
+#ifdef quc
+class Q_DECL_EXPORT SmoothCurve
+#else
+class SmoothCurve
+#endif
+
+{
+public:
+    //创建平滑曲线路径
+    static QPainterPath createSmoothCurve(const QVector<QPointF> &points);
+    static QPainterPath createSmoothCurve2(const QVector<QPointF> &points);
+
+private:
+    static void calculateFirstControlPoints(double *&result, const double *rhs, int n);
+    static void calculateControlPoints(const QVector<QPointF> &datas,
+                                       QVector<QPointF> *firstControlPoints,
+                                       QVector<QPointF> *secondControlPoints);
+};
+
+#endif // SMOOTHCURVE_H
--- a/control/smoothcurve/smoothcurve.pro
+++ b/control/smoothcurve/smoothcurve.pro
@@ -0,0 +1,17 @@
+QT += core gui
+greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
+greaterThan(QT_MAJOR_VERSION, 5): QT += core5compat
+
+TARGET      = smoothcurve
+TEMPLATE    = app
+DESTDIR     = $$PWD/../bin
+CONFIG      += warn_off
+
+SOURCES     += main.cpp
+SOURCES     += frmsmoothcurve.cpp
+SOURCES     += smoothcurve.cpp
+
+HEADERS     += frmsmoothcurve.h
+HEADERS     += smoothcurve.h
+
+FORMS       += frmsmoothcurve.ui