в 15:31, 26 мая 2010

2010-05-26T15:31:53Z

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2010-05-26T12:18:46Z

1 версия

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==Create an irregular Region add a circle to the region==

<source lang="csharp">using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form {
protected override void OnPaint(PaintEventArgs e) {
Graphics g = e.Graphics;
g.FillRectangle(Brushes.White, this.ClientRectangle);
Region reg = new Region();
reg.MakeEmpty();
GraphicsPath gp = new GraphicsPath();
gp.AddEllipse(10, 10, 50, 50);
reg.Union(gp);
gp.Reset();
gp.AddLine(40, 40, 70, 10);
gp.AddLine(70, 10, 100, 40);
gp.CloseFigure();
reg.Union(gp);
reg.Union(new Rectangle(40, 50, 60, 60));
g.SetClip(reg, CombineMode.Replace);
g.FillRectangle(Brushes.Green, this.ClientRectangle);
gp.Dispose();
reg.Dispose();
}
public static void Main() {
Application.Run(new Form1());
}
}</source>

==Create a Region object, cut a rectangular hole in it, and fill it==

<source lang="csharp">using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form {
protected override void OnPaint(PaintEventArgs e) {
Graphics g = e.Graphics;
g.FillRectangle(Brushes.White, this.ClientRectangle);
Region r = new Region(new Rectangle(30, 30, 30, 60));
r.Exclude(new Rectangle(40, 40, 10, 10));
g.FillRegion(Brushes.Orange, r);
Console.WriteLine("This Region: ");
Console.WriteLine(r.IsInfinite(g) ? " - is infinite" : " - is finite");
Console.WriteLine(r.IsEmpty(g) ? " - is empty" : " - is non-empty");
PointF pf = new PointF(35.0f, 30.0f);
Console.WriteLine((r.IsVisible(pf) ? " - includes" : " - excludes") + " the point (35.0, 50.0)");
Rectangle rect = new Rectangle(25, 65, 15, 15);
g.DrawRectangle(Pens.Black, rect);
Console.WriteLine((r.IsVisible(rect) ? " - is visible" : " - is invisible") + " in the rectangle shown");
r.Dispose();
}
public static void Main() {
Application.Run(new Form1());
}
}</source>

==Create a Region whose boundary is the above GraphicsPath==

<source lang="csharp">using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form {
protected override void OnPaint(PaintEventArgs e) {
Graphics g = e.Graphics;
g.FillRectangle(Brushes.White, this.ClientRectangle);
GraphicsPath gp = new GraphicsPath();
gp.AddLine(10, 10, 10, 50);
gp.AddLine(10, 50, 50, 50);
gp.AddLine(50, 50, 50, 10);
gp.StartFigure();
gp.AddLine(60, 10, 60, 50);
gp.AddLine(60, 50, 100, 50);
gp.AddLine(100, 50, 100, 10);
gp.CloseFigure();
Rectangle r = new Rectangle(110, 10, 40, 40);
gp.AddEllipse(r);
Region reg = new Region(gp);
g.FillRegion(Brushes.Green, reg);
reg.Dispose();
gp.Dispose();
}
public static void Main() {
Application.Run(new Form1());
}
}</source>

==Region.IsVisible==

<source lang="csharp">using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Drawing2D;
public class Form1 : System.Windows.Forms.Form {
private System.Windows.Forms.Label label1;
GraphicsPath gP;
string mes = "Move to the big I!";
FontFamily fF = new FontFamily("Times new roman");
public Form1() {
this.label1 = new System.Windows.Forms.Label();
this.SuspendLayout();
this.label1.Location = new System.Drawing.Point(88, 16);
this.label1.Size = new System.Drawing.Size(160, 23);
this.label1.Text = "label1";
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 109);
this.Controls.AddRange(new System.Windows.Forms.Control[] { this.label1 });
this.MouseMove += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseMove);
this.ResumeLayout(false);
Graphics g = this.CreateGraphics();
label1.Text = mes;
string s = "I";
int fSt = (int)FontStyle.Regular;
Point xy = new Point(50, 10);
StringFormat sFr = StringFormat.GenericDefault;
gP = new GraphicsPath();
gP.AddString(s, fF, fSt, 50, xy, sFr);
}
[STAThread]
static void Main() {
Application.Run(new Form1());
}
protected override void OnPaint(System.Windows.Forms.PaintEventArgs e) {
Graphics g = this.CreateGraphics();
g.DrawPath(Pens.Black, gP); // draw the path to the surface
g.Dispose();
}
private void Form1_MouseMove(object sender, MouseEventArgs e) {
Region reg = new Region(gP);
if (reg.IsVisible(new Point(e.X, e.Y)))
mes = "in";
else
mes = "Move to the big I!";
}
}</source>

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Csharp/CSharp Tutorial/2D/Region - История изменений

в 15:31, 26 мая 2010

Admin: 1 версия