This example describes the example of surface drawing of C# implementation in detail. This is one of the core drawing files codes. There are many comments in the code and are relatively detailed. I believe it will be helpful for beginners to learn and understand the technical points and difficulties in C# drawing.
The main functional codes for drawing a surface graph in C# are as follows:
using System;
using ;
using ;
using ;
using ;
using ;
using ;
using ;
using ;
namespace Draw a face chart
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
Graphics g;//Create Graphics object private void button1_Click(object sender, EventArgs e)
{
Bitmap bt = new Bitmap(, );//Instantiate a Bitmap object int flag = (-4 )/ 6;//The value-added of X-axis g = (bt);//Instantiate Graphics object Pen p = new Pen(, 1);//Set Pen object (p, new Point(0, 0), new Point(0, -20));//Draw the Y axis (p, new Point(0, - 20), new Point( - 4, - 20));//Draw the X-axis //Declare an array for drawing colors Color[] cl = new Color[] { , , , , , , Color .Tomato};
int[] points = { 20,70,80,60,40,100,10};//Declare an array that calculates the peak of the trend Point pt1 = new Point(0, - 20 - points[0]);//Record the first point of drawing the quadrilateral Point pt2 = new Point(0, - 20);//Record the second point of the quadrilateral drawing for (int i = 0; i <= 6; i++)//Draw the month and face chart through a for loop {
PointF p1 = new PointF(flag * i, - 20);// Calculate the coordinates of the numbers for each month //Draw the number of the month that shows the number ((), new Font("Songyi", 9), new SolidBrush(), new PointF( - 2, ));
//Record the third point of drawing the quadrilateral Point pt3 = new Point(flag * i, - 20);
//Record the fourth point of the quadrilateral drawing Point pt4 = new Point(flag * i, - 20 - points[i]);
Point[] pt={pt1,pt2,pt3,pt4};//Declare a Point array (new SolidBrush(cl[i]), pt);//Fill the color of the quadrilateral //When you continue to draw the next quadrilateral, the last two points of the previous quadrilateral are the starting points of the next quadrilateral pt1 = pt4;
pt2 = pt3;
}
= bt;//Show the drawn face chart }
private void Form1_Load(object sender, EventArgs e)
{
}
}
}
Surface charts are a very popular chart style, and it is very convenient to display data. Reasonable application will greatly improve the visual effect of program data!