C# 画曲线
试图画一个二次函数,用户输入a,b,c(ax^2+bx+c)。我已经做了一个计算根的函数,现在我必须试着画这个图。我复制了微软的贝塞尔曲线的例子,它编译了,但没有输出。任何帮助都会很好C# 画曲线,c#,graph,C#,Graph,试图画一个二次函数,用户输入a,b,c(ax^2+bx+c)。我已经做了一个计算根的函数,现在我必须试着画这个图。我复制了微软的贝塞尔曲线的例子,它编译了,但没有输出。任何帮助都会很好 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Li
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace graph
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
public void drawBeziers(Pen pen, Point[] coordinates)
{
}
private void quadGraph(PaintEventArgs e)
{
Pen blackPen = new Pen(Color.Black, 3);
Point start = new Point(100, 100);
Point control1 = new Point(200, 10);
Point control2 = new Point(350, 50);
Point end1 = new Point(500, 100);
Point control3 = new Point(600, 150);
Point control4 = new Point(650, 250);
Point end2 = new Point(500, 300);
Point[] bezierPoints =
{
start, control1, control2, end1,
control3, control4, end2
};
e.Graphics.DrawBeziers(blackPen, bezierPoints);
}
您甚至不调用quadGraph(),请将其添加到类中:
protected override void OnPaint(PaintEventArgs pe)
{
base.OnPaint(pe);
quadGraph(pe);
}
您甚至不调用quadGraph()。。。。