C#
원그리기
안녕1999
2020. 12. 5. 23:44
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
// Add reference for VISA-COM 5.9 Type Library
using Ivi.Visa.Interop;
using System.Diagnostics;
using System.Runtime.InteropServices;
//using Math.Util;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
public struct POINT
{
public int x, y;
}
public class Test
{
/*
double 라디안 = 각도 * (float)(Math.PI / 180);
double x2 = Math.Cos(라디안) * x1 - Math.Sin(라디안) * y1;
double y2 = Math.Sin(라디안) * x1 + Math.Cos(라디안) * y1;
*/
[DllImport("user32.dll")]
public static extern bool GetCursorPos(out POINT lpPoint);
static int CirclePoint_n = 360 * 10;
static double[] CirclePoint_x = new double[CirclePoint_n];
static double[] CirclePoint_y = new double[CirclePoint_n];
static bool bCreateCirclePoint;
static void CreateCirclePoint()
{
int i;
double ra = 0, x0, y0;
x0 = 1;
y0 = 0;
for (i = 0; i < CirclePoint_n; i++)
{
double c, s;
//x1=x*cos()-y*sin();
//y1=x*sin()+y*cos();
ra = Math.PI * 2 * i / CirclePoint_n;
c = Math.Cos(ra);
s = Math.Sin(ra);
CirclePoint_x[i] = x0 * c - y0 * s;
CirclePoint_y[i] = x0 * s + y0 * c;
//G.DEBUG_puts(i.ToString()+"\t" + CirclePoint_x[i] + "\t" + CirclePoint_y[i]);
}
bCreateCirclePoint = true;
//RotateMoveScale(x, y, n, ref x, ref y, 45,400,200,500);
}
//DrawPolygon(Pen, PointF[])
//반지름이 1인 원의 좌표중 m개의 점만 얻는다
//원의 좌표들을 미리 계산하여, RotateMoveScale하여 사용한다
//7각형같은 다각형의 좌표로도 활용가능
static void GetCirclePoint(ref double[] x, ref double[] y, int m)
{
int i, idx = 0, inc = CirclePoint_n / m;
for (i = 0; i < m; i++)
{
x[i] = CirclePoint_x[idx];
y[i] = CirclePoint_y[idx];
idx += inc;
}
}
static void RotateMoveScale(double[] x, double[] y, int n,
ref double[] x2, ref double[] y2,
double deg = 0,//deg=각도 0~360
double dx = 0, double dy = 0,
double Scale = 1)
{
int i;
double ra, ix, iy;
if (deg == 0)
{
if ((dx == 0) && (dy == 0))
{
if (Scale == 1)
{
for (i = 0; i < n; i++)
{
x2[i] = x[i];
y2[i] = y[i];
}
}
else
{
for (i = 0; i < n; i++)
{
x2[i] = x[i] * Scale;
y2[i] = y[i] * Scale;
}
}
}
else
{
if (Scale == 1)
{
for (i = 0; i < n; i++)
{
x2[i] = x[i] + dx;
y2[i] = y[i] + dy;
}
}
else
{
for (i = 0; i < n; i++)
{
x2[i] = x[i] * Scale + dx;
y2[i] = y[i] * Scale + dy;
}
}
}
}
else
{
double c, s;
ra = deg * (Math.PI / 180);
c = Math.Cos(ra);
s = Math.Sin(ra);
if ((dx == 0) && (dy == 0))
{
if (Scale == 1)
{
for (i = 0; i < n; i++)
{
ix = x[i];//x와 x2가 같은 경우 문제가 됨
iy = y[i];
x2[i] = ix * c - iy * s;
y2[i] = ix * s + iy * c;
}
}
else
{
for (i = 0; i < n; i++)
{
ix = x[i];//x와 x2가 같은 경우 문제가 됨
iy = y[i];
x2[i] = (ix * c - iy * s) * Scale;
y2[i] = (ix * s + iy * c) * Scale;
}
}
}
else
{
if (Scale == 1)
{
for (i = 0; i < n; i++)
{
ix = x[i];//x와 x2가 같은 경우 문제가 됨
iy = y[i];
x2[i] = ix * c - iy * s + dx;
y2[i] = ix * s + iy * c + dy;
}
}
else
{
for (i = 0; i < n; i++)
{
ix = x[i];//x와 x2가 같은 경우 문제가 됨
iy = y[i];
x2[i] = (ix * c - iy * s) * Scale + dx;
y2[i] = (ix * s + iy * c) * Scale + dy;
}
}
}
}
}
static void DrawPolygon(Graphics g, double[] x, double[] y, int n)
{
PointF[] p = new PointF[n];
int i;
for (i = 0; i < n; i++)
{
p[i] = new PointF((float)x[i], (float)y[i]);
}
g.DrawPolygon(System.Drawing.Pens.LightGray, p);
}
static void Move(double[] x, double[] y, int n,
ref double[] x2, ref double[] y2,
double dx, double dy)
{
int i;
for (i = 0; i < n; i++)
{
x2[i] = x[i] + dx;
y2[i] = y[i] + dy;
}
}
void Rotate(double[] x, double[] y, int n, double deg,//deg=각도 0~360
ref double[] x2, ref double[] y2)
{
int i;
double ra = deg * (Math.PI / 180),
c, s;
c = Math.Cos(ra);
s = Math.Sin(ra);
for (i = 0; i < n; i++)
{
x2[i] = x[i] * c - y[i] * s;
y2[i] = x[i] * s + y[i] * c;
}
}
//시작점,중심점으로 각도 계산
static public double Get_deg_from_two_point(double ox, double oy,
double x, double y)
{
return (180 / Math.PI * Math.Atan2(y - oy, x - ox));
}
static void test5()
{
double d;
d = Get_deg_from_two_point(0, 0, 1, 0);//d=0
G.DEBUG_puts_double("d", d);
d = Get_deg_from_two_point(0, 0, 1, 1);//d=45
G.DEBUG_puts_double("d", d);
d = Get_deg_from_two_point(0, 0, 0, 1);//d=90
G.DEBUG_puts_double("d", d);
d = Get_deg_from_two_point(0, 0, -1, 1);//d=135
G.DEBUG_puts_double("d", d);
d = Get_deg_from_two_point(0, 0, -1, 0);//d=180
G.DEBUG_puts_double("d", d);
d = Get_deg_from_two_point(0, 0, -1, -1);//d=-135
G.DEBUG_puts_double("d", d);
d = Get_deg_from_two_point(0, 0, 1, -1);//d=-45
G.DEBUG_puts_double("d", d);
}
//두점을 연결하는 직선의 방정식
//y = ((y2 ? y1) / (x2 ? x1)) (x ? x1) + y1
//두께가 d이고, 2점을 연결하는 직선1과, px,py에서 시작하는 수평선이 직선1과 만나는 지점구하기
//(직선1과는 d/2만큼 떨어진 좌표이다.)
//수평선은 직선1의 방정식에서 y값을 알고 있고, x좌표만 구하면 된다.(-d/2)
static void Circle_r(Graphics g, double x1, double y1, double r)
{
}
static void Circle_d(Graphics g, double x1, double y1, double d)
{
Circle_r(g, x1, y1, d / 2);
}
//두께가 d인 라인 그리기
static void DrawWidthLine(Graphics g, double x1, double y1, double x2, double y2, double d)
{
Circle_d(g, x1, y1, d);
Circle_d(g, x2, y2, d);
}
static public double angle;
static public void DEBUG_Test_Paint(Form wnd, PaintEventArgs e)
{
Graphics g = e.Graphics;
/*Font fnt = new Font("Arial", 10);
// Draw a string on the PictureBox.
g.DrawString("This is a diagonal line drawn on the control",
fnt, System.Drawing.Brushes.Blue, new Point(30, 30));
// Draw a line in the PictureBox.
g.DrawLine(System.Drawing.Pens.Red, 10, 20,100, 150);*/
if (bCreateCirclePoint == false)
{
CreateCirclePoint();
}
else { }
POINT pt;
GetCursorPos(out pt);
int n = 8;
double[] x2 = new double[n];
double[] y2 = new double[n];
GetCirclePoint(ref x2, ref y2, n);
pt.x = 920;
pt.y = 240;
//Move(x, y, n,ref x2, ref y2,(double)pt.x, (double)pt.y);
RotateMoveScale(x2, y2, n, ref x2, ref y2, angle, (double)pt.x, (double)pt.y, 5);
//angle += 10;
DrawPolygon(g, x2, y2, n);
//DrawPolygon(g, x, y, n);
//test5();
}
static public void DEBUG_Test3(Form wnd)
{
POINT p;
GetCursorPos(out p);
}
static public void DEBUG_Test2(Form wnd)
{
Graphics g = wnd.CreateGraphics();
CreateCirclePoint();
}
static public void DEBUG_Test4(Form wnd)
{
Graphics g = wnd.CreateGraphics();
Rectangle r = new Rectangle(10, 20, 30, 40);
POINT pt;
Point p = new Point();
GetCursorPos(out pt);
p.X = pt.x;
p.Y = pt.y;
r.Location = p;
r.Width = 10;
r.Height = 2;
System.Drawing.SolidBrush br = new System.Drawing.SolidBrush(System.Drawing.Color.Red);
g.FillRectangle(br, r);
}
static public void DEBUG_test1(Form wnd, int x, int y)
{
Graphics g = wnd.CreateGraphics();
Pen pen = new Pen(Color.DarkSeaGreen);
g.DrawArc(pen, x, y, 20, 20, 0, 270);
}
static public void DEBUG_test4(Form wnd, int x, int y)
{
Graphics g = wnd.CreateGraphics();
Pen pen = new Pen(Color.DarkSeaGreen);
g.DrawArc(pen, x, y, 20, 20, 0, 270);
}
}