回答編集履歴
5
コード整理
test
CHANGED
|
@@ -55,10 +55,10 @@
|
|
|
55
55
|
{
|
|
56
56
|
BackColor = Color.White,
|
|
57
57
|
Image = new Bitmap(64, 64),
|
|
58
|
-
|
|
58
|
+
SizeMode = PictureBoxSizeMode.Zoom,
|
|
59
59
|
Width = 64 * 8,
|
|
60
60
|
Height = 64 * 8,
|
|
61
|
-
|
|
61
|
+
Parent = this,
|
|
62
62
|
};
|
|
63
63
|
pictureBox1.MouseDown += PictureBox1_MouseDown;
|
|
64
64
|
pictureBox1.MouseMove += PictureBox1_MouseMove;
|
|
@@ -75,10 +75,10 @@
|
|
|
75
75
|
BackColor = Color.White,
|
|
76
76
|
Image = new Bitmap(64, 64),
|
|
77
77
|
Location = new Point(520, 0),
|
|
78
|
-
|
|
78
|
+
SizeMode = PictureBoxSizeMode.Zoom,
|
|
79
79
|
Width = 64 * 8,
|
|
80
80
|
Height = 64 * 8,
|
|
81
|
-
|
|
81
|
+
Parent = this,
|
|
82
82
|
};
|
|
83
83
|
pictureBox2.Paint += PictureBox2_Paint;
|
|
84
84
|
}
|
|
@@ -140,12 +140,11 @@
|
|
|
140
140
|
{
|
|
141
141
|
for (var y = 0; y < selectionMask.Height; y++)
|
|
142
142
|
{
|
|
143
|
-
if (0
|
|
143
|
+
if (0 == selectionMask.GetPixel(x, y).B) continue;
|
|
144
|
-
|
|
144
|
+
|
|
145
|
-
|
|
145
|
+
var rect = new Rectangle(x * 8, y * 8, 8, 8);
|
|
146
|
-
|
|
146
|
+
if (region == null) region = new Region(rect);
|
|
147
|
-
|
|
147
|
+
else region.Union(rect);
|
|
148
|
-
}
|
|
149
148
|
}
|
|
150
149
|
}
|
|
151
150
|
}
|
|
@@ -172,7 +171,7 @@
|
|
|
172
171
|
hdc = e.Graphics.GetHdc();
|
|
173
172
|
hbrush = CreateSolidBrush(colorref.colorref);
|
|
174
173
|
|
|
175
|
-
FrameRgn(hdc, hrgn, hbrush,
|
|
174
|
+
FrameRgn(hdc, hrgn, hbrush, 1, 1);
|
|
176
175
|
}
|
|
177
176
|
finally
|
|
178
177
|
{
|
|
@@ -182,8 +181,8 @@
|
|
|
182
181
|
}
|
|
183
182
|
}
|
|
184
183
|
|
|
184
|
+
[DllImport("gdi32")] private static extern IntPtr CreateSolidBrush(uint colorref);
|
|
185
185
|
[DllImport("gdi32")] private static extern bool FrameRgn(IntPtr hDC, IntPtr hRgn, IntPtr hBrush, int nWidth, int nHeight);
|
|
186
|
-
[DllImport("gdi32")] private static extern IntPtr CreateSolidBrush(uint colorref);
|
|
187
186
|
[DllImport("gdi32")] private static extern bool DeleteObject([In] IntPtr hObject);
|
|
188
187
|
|
|
189
188
|
[StructLayout(LayoutKind.Explicit)]
|
|
@@ -193,8 +192,7 @@
|
|
|
193
192
|
[FieldOffset(0)] public byte red;
|
|
194
193
|
[FieldOffset(1)] public byte green;
|
|
195
194
|
[FieldOffset(2)] public byte blue;
|
|
196
|
-
public COLORREF(Color color) : this()
|
|
197
|
-
=> (red, green, blue) = (color.R, color.G, color.B);
|
|
195
|
+
public COLORREF(Color color) : this() => (red, green, blue) = (color.R, color.G, color.B);
|
|
198
196
|
}
|
|
199
197
|
|
|
200
198
|
private class MyPictureBox : PictureBox
|
|
@@ -209,4 +207,4 @@
|
|
|
209
207
|
}
|
|
210
208
|
}
|
|
211
209
|
```
|
|
212
|
-
|
4
コード整理
test
CHANGED
|
@@ -37,12 +37,11 @@
|
|
|
37
37
|
{
|
|
38
38
|
public partial class Form1 : Form
|
|
39
39
|
{
|
|
40
|
-
private PictureBox pictureBox1;
|
|
40
|
+
private readonly PictureBox pictureBox1;
|
|
41
|
-
private PictureBox pictureBox2;
|
|
41
|
+
private readonly PictureBox pictureBox2;
|
|
42
|
+
|
|
42
|
-
private
|
|
43
|
+
private GraphicsPath scaledPath;
|
|
43
|
-
|
|
44
|
-
private GraphicsPath
|
|
44
|
+
private GraphicsPath realPath;
|
|
45
|
-
private GraphicsPath path2;
|
|
46
45
|
private Region region;
|
|
47
46
|
|
|
48
47
|
private bool isDragging;
|
|
@@ -66,9 +65,10 @@
|
|
|
66
65
|
pictureBox1.MouseUp += PictureBox1_MouseUp;
|
|
67
66
|
pictureBox1.Paint += PictureBox1_Paint;
|
|
68
67
|
|
|
69
|
-
var g = Graphics.FromImage(pictureBox1.Image)
|
|
68
|
+
using (var g = Graphics.FromImage(pictureBox1.Image))
|
|
69
|
+
{
|
|
70
|
-
g.FillEllipse(Brushes.Orange, new Rectangle(0, 0, 40, 40));
|
|
70
|
+
g.FillEllipse(Brushes.Orange, new Rectangle(0, 0, 40, 40));
|
|
71
|
-
|
|
71
|
+
}
|
|
72
72
|
|
|
73
73
|
pictureBox2 = new MyPictureBox
|
|
74
74
|
{
|
|
@@ -83,70 +83,78 @@
|
|
|
83
83
|
pictureBox2.Paint += PictureBox2_Paint;
|
|
84
84
|
}
|
|
85
85
|
|
|
86
|
-
private void PictureBox1_Paint(object sender, PaintEventArgs e)
|
|
87
|
-
{
|
|
88
|
-
if (path == null) return;
|
|
89
|
-
e.Graphics.DrawPath(p, path);
|
|
90
|
-
}
|
|
91
|
-
|
|
92
86
|
private void PictureBox1_MouseDown(object sender, MouseEventArgs e)
|
|
93
87
|
{
|
|
88
|
+
scaledPath?.Dispose();
|
|
94
|
-
|
|
89
|
+
scaledPath = new GraphicsPath();
|
|
95
90
|
var matrix = new Matrix();
|
|
96
91
|
matrix.Scale(8, 8);
|
|
97
|
-
|
|
92
|
+
scaledPath.Transform(matrix);
|
|
93
|
+
|
|
98
|
-
|
|
94
|
+
realPath?.Dispose();
|
|
99
|
-
|
|
95
|
+
realPath = new GraphicsPath();
|
|
100
96
|
|
|
101
97
|
isDragging = true;
|
|
102
98
|
startX = e.X;
|
|
103
99
|
startY = e.Y;
|
|
104
100
|
}
|
|
101
|
+
|
|
105
102
|
private void PictureBox1_MouseMove(object sender, MouseEventArgs e)
|
|
106
103
|
{
|
|
107
104
|
if (!isDragging) return;
|
|
108
105
|
|
|
109
|
-
|
|
106
|
+
scaledPath.AddLine(startX / 8 * 8, startY / 8 * 8, e.X / 8 * 8, e.Y / 8 * 8);
|
|
110
|
-
|
|
107
|
+
realPath.AddLine(startX / 8, startY / 8, e.X / 8, e.Y / 8);
|
|
111
108
|
|
|
112
109
|
pictureBox1.Refresh();
|
|
113
110
|
startX = e.X;
|
|
114
111
|
startY = e.Y;
|
|
115
112
|
}
|
|
113
|
+
|
|
116
114
|
private void PictureBox1_MouseUp(object sender, MouseEventArgs e)
|
|
117
115
|
{
|
|
118
116
|
isDragging = false;
|
|
119
|
-
|
|
117
|
+
scaledPath.CloseFigure();
|
|
120
118
|
pictureBox1.Refresh();
|
|
121
119
|
|
|
122
|
-
var
|
|
120
|
+
var clippedImage = new Bitmap(64, 64);
|
|
123
|
-
var g = Graphics.FromImage(
|
|
121
|
+
using (var g = Graphics.FromImage(clippedImage))
|
|
122
|
+
{
|
|
124
|
-
g.Clip = new Region(
|
|
123
|
+
g.Clip = new Region(realPath);
|
|
125
|
-
g.DrawImage(pictureBox1.Image, 0, 0);
|
|
124
|
+
g.DrawImage(pictureBox1.Image, 0, 0);
|
|
126
|
-
|
|
125
|
+
}
|
|
127
126
|
pictureBox2.Image?.Dispose();
|
|
128
|
-
pictureBox2.Image =
|
|
127
|
+
pictureBox2.Image = clippedImage;
|
|
129
|
-
|
|
128
|
+
|
|
130
|
-
|
|
129
|
+
using (var selectionMask = new Bitmap(64, 64))
|
|
131
|
-
g = Graphics.FromImage(bitmap);
|
|
132
|
-
g.Clip = new Region(path2);
|
|
133
|
-
g.FillRectangle(Brushes.Aqua, 0, 0, 512, 512);
|
|
134
|
-
g.Dispose();
|
|
135
|
-
region = null;
|
|
136
|
-
for (var x = 0; x < bitmap.Width; x++)
|
|
137
|
-
{
|
|
130
|
+
{
|
|
138
|
-
|
|
131
|
+
using (var g = Graphics.FromImage(selectionMask))
|
|
139
132
|
{
|
|
133
|
+
g.Clip = new Region(realPath);
|
|
134
|
+
g.FillRectangle(Brushes.Aqua, 0, 0, 64, 64);
|
|
135
|
+
}
|
|
136
|
+
|
|
137
|
+
region?.Dispose();
|
|
138
|
+
region = null;
|
|
139
|
+
for (var x = 0; x < selectionMask.Width; x++)
|
|
140
|
+
{
|
|
140
|
-
|
|
141
|
+
for (var y = 0; y < selectionMask.Height; y++)
|
|
141
142
|
{
|
|
142
|
-
if (region == null)
|
|
143
|
-
|
|
143
|
+
if (0 < selectionMask.GetPixel(x, y).B)
|
|
144
|
-
|
|
144
|
+
{
|
|
145
|
-
re
|
|
145
|
+
var rect = new Rectangle(x * 8, y * 8, 8, 8);
|
|
146
|
+
if (region == null) region = new Region(rect);
|
|
147
|
+
else region.Union(rect);
|
|
148
|
+
}
|
|
146
149
|
}
|
|
147
150
|
}
|
|
148
151
|
}
|
|
152
|
+
}
|
|
153
|
+
|
|
154
|
+
private void PictureBox1_Paint(object sender, PaintEventArgs e)
|
|
155
|
+
{
|
|
156
|
+
if (scaledPath == null) return;
|
|
149
|
-
|
|
157
|
+
e.Graphics.DrawPath(Pens.Red, scaledPath);
|
|
150
158
|
}
|
|
151
159
|
|
|
152
160
|
private void PictureBox2_Paint(object sender, PaintEventArgs e)
|
|
@@ -174,34 +182,29 @@
|
|
|
174
182
|
}
|
|
175
183
|
}
|
|
176
184
|
|
|
177
|
-
[DllImport("gdi32")] static extern bool FrameRgn(IntPtr hDC, IntPtr hRgn, IntPtr hBrush, int nWidth, int nHeight);
|
|
185
|
+
[DllImport("gdi32")] private static extern bool FrameRgn(IntPtr hDC, IntPtr hRgn, IntPtr hBrush, int nWidth, int nHeight);
|
|
178
|
-
[DllImport("gdi32")] static extern IntPtr CreateSolidBrush(uint colorref);
|
|
186
|
+
[DllImport("gdi32")] private static extern IntPtr CreateSolidBrush(uint colorref);
|
|
179
|
-
[DllImport("gdi32")] static extern bool DeleteObject([In] IntPtr hObject);
|
|
187
|
+
[DllImport("gdi32")] private static extern bool DeleteObject([In] IntPtr hObject);
|
|
180
188
|
|
|
181
189
|
[StructLayout(LayoutKind.Explicit)]
|
|
182
|
-
struct COLORREF
|
|
190
|
+
private struct COLORREF
|
|
183
191
|
{
|
|
184
192
|
[FieldOffset(0)] public uint colorref;
|
|
185
193
|
[FieldOffset(0)] public byte red;
|
|
186
194
|
[FieldOffset(1)] public byte green;
|
|
187
195
|
[FieldOffset(2)] public byte blue;
|
|
188
|
-
|
|
189
196
|
public COLORREF(Color color) : this()
|
|
197
|
+
=> (red, green, blue) = (color.R, color.G, color.B);
|
|
198
|
+
}
|
|
199
|
+
|
|
200
|
+
private class MyPictureBox : PictureBox
|
|
190
|
-
|
|
201
|
+
{
|
|
191
|
-
|
|
202
|
+
protected override void OnPaint(PaintEventArgs e)
|
|
203
|
+
{
|
|
204
|
+
e.Graphics.InterpolationMode = InterpolationMode.NearestNeighbor;
|
|
192
|
-
|
|
205
|
+
e.Graphics.PixelOffsetMode = PixelOffsetMode.Half;
|
|
193
|
-
b
|
|
206
|
+
base.OnPaint(e);
|
|
194
|
-
}
|
|
207
|
+
}
|
|
195
|
-
}
|
|
196
|
-
}
|
|
197
|
-
|
|
198
|
-
class MyPictureBox : PictureBox
|
|
199
|
-
{
|
|
200
|
-
protected override void OnPaint(PaintEventArgs e)
|
|
201
|
-
{
|
|
202
|
-
e.Graphics.InterpolationMode = InterpolationMode.NearestNeighbor;
|
|
203
|
-
e.Graphics.PixelOffsetMode = PixelOffsetMode.Half;
|
|
204
|
-
base.OnPaint(e);
|
|
205
208
|
}
|
|
206
209
|
}
|
|
207
210
|
}
|
3
FrameRgn
test
CHANGED
|
@@ -22,3 +22,188 @@
|
|
|
22
22
|
---
|
|
23
23
|
|
|
24
24
|
アイコンエディタのような小さい画像向けならばドット境界は重要でしょうが、大きい画像向けなら（わたしは）気にしていないかも（自由選択を使ってないから？^^;
|
|
25
|
+
|
|
26
|
+
---
|
|
27
|
+
|
|
28
|
+
## FrameRgn
|
|
29
|
+
```cs
|
|
30
|
+
using System;
|
|
31
|
+
using System.Drawing;
|
|
32
|
+
using System.Drawing.Drawing2D;
|
|
33
|
+
using System.Runtime.InteropServices;
|
|
34
|
+
using System.Windows.Forms;
|
|
35
|
+
|
|
36
|
+
namespace Q8nihxba9mjinwo
|
|
37
|
+
{
|
|
38
|
+
public partial class Form1 : Form
|
|
39
|
+
{
|
|
40
|
+
private PictureBox pictureBox1;
|
|
41
|
+
private PictureBox pictureBox2;
|
|
42
|
+
private Pen p = new Pen(Brushes.Red);
|
|
43
|
+
|
|
44
|
+
private GraphicsPath path;
|
|
45
|
+
private GraphicsPath path2;
|
|
46
|
+
private Region region;
|
|
47
|
+
|
|
48
|
+
private bool isDragging;
|
|
49
|
+
private int startX, startY;
|
|
50
|
+
|
|
51
|
+
public Form1()
|
|
52
|
+
{
|
|
53
|
+
InitializeComponent();
|
|
54
|
+
|
|
55
|
+
pictureBox1 = new MyPictureBox
|
|
56
|
+
{
|
|
57
|
+
BackColor = Color.White,
|
|
58
|
+
Image = new Bitmap(64, 64),
|
|
59
|
+
Parent = this,
|
|
60
|
+
Width = 64 * 8,
|
|
61
|
+
Height = 64 * 8,
|
|
62
|
+
SizeMode = PictureBoxSizeMode.Zoom,
|
|
63
|
+
};
|
|
64
|
+
pictureBox1.MouseDown += PictureBox1_MouseDown;
|
|
65
|
+
pictureBox1.MouseMove += PictureBox1_MouseMove;
|
|
66
|
+
pictureBox1.MouseUp += PictureBox1_MouseUp;
|
|
67
|
+
pictureBox1.Paint += PictureBox1_Paint;
|
|
68
|
+
|
|
69
|
+
var g = Graphics.FromImage(pictureBox1.Image);
|
|
70
|
+
g.FillEllipse(Brushes.Orange, new Rectangle(0, 0, 40, 40));
|
|
71
|
+
g.Dispose();
|
|
72
|
+
|
|
73
|
+
pictureBox2 = new MyPictureBox
|
|
74
|
+
{
|
|
75
|
+
BackColor = Color.White,
|
|
76
|
+
Image = new Bitmap(64, 64),
|
|
77
|
+
Location = new Point(520, 0),
|
|
78
|
+
Parent = this,
|
|
79
|
+
Width = 64 * 8,
|
|
80
|
+
Height = 64 * 8,
|
|
81
|
+
SizeMode = PictureBoxSizeMode.Zoom,
|
|
82
|
+
};
|
|
83
|
+
pictureBox2.Paint += PictureBox2_Paint;
|
|
84
|
+
}
|
|
85
|
+
|
|
86
|
+
private void PictureBox1_Paint(object sender, PaintEventArgs e)
|
|
87
|
+
{
|
|
88
|
+
if (path == null) return;
|
|
89
|
+
e.Graphics.DrawPath(p, path);
|
|
90
|
+
}
|
|
91
|
+
|
|
92
|
+
private void PictureBox1_MouseDown(object sender, MouseEventArgs e)
|
|
93
|
+
{
|
|
94
|
+
path = new GraphicsPath();
|
|
95
|
+
var matrix = new Matrix();
|
|
96
|
+
matrix.Scale(8, 8);
|
|
97
|
+
path.Transform(matrix);
|
|
98
|
+
|
|
99
|
+
path2 = new GraphicsPath();
|
|
100
|
+
|
|
101
|
+
isDragging = true;
|
|
102
|
+
startX = e.X;
|
|
103
|
+
startY = e.Y;
|
|
104
|
+
}
|
|
105
|
+
private void PictureBox1_MouseMove(object sender, MouseEventArgs e)
|
|
106
|
+
{
|
|
107
|
+
if (!isDragging) return;
|
|
108
|
+
|
|
109
|
+
path.AddLine(new Point(startX / 8 * 8, startY / 8 * 8), new Point(e.X / 8 * 8, e.Y / 8 * 8));
|
|
110
|
+
path2.AddLine(new Point(startX / 8, startY / 8), new Point(e.X / 8, e.Y / 8));
|
|
111
|
+
|
|
112
|
+
pictureBox1.Refresh();
|
|
113
|
+
startX = e.X;
|
|
114
|
+
startY = e.Y;
|
|
115
|
+
}
|
|
116
|
+
private void PictureBox1_MouseUp(object sender, MouseEventArgs e)
|
|
117
|
+
{
|
|
118
|
+
isDragging = false;
|
|
119
|
+
path.CloseFigure();
|
|
120
|
+
pictureBox1.Refresh();
|
|
121
|
+
|
|
122
|
+
var bitmap = new Bitmap(64, 64);
|
|
123
|
+
var g = Graphics.FromImage(bitmap);
|
|
124
|
+
g.Clip = new Region(path2);
|
|
125
|
+
g.DrawImage(pictureBox1.Image, 0, 0);
|
|
126
|
+
g.Dispose();
|
|
127
|
+
pictureBox2.Image?.Dispose();
|
|
128
|
+
pictureBox2.Image = bitmap;
|
|
129
|
+
|
|
130
|
+
bitmap = new Bitmap(64, 64);
|
|
131
|
+
g = Graphics.FromImage(bitmap);
|
|
132
|
+
g.Clip = new Region(path2);
|
|
133
|
+
g.FillRectangle(Brushes.Aqua, 0, 0, 512, 512);
|
|
134
|
+
g.Dispose();
|
|
135
|
+
region = null;
|
|
136
|
+
for (var x = 0; x < bitmap.Width; x++)
|
|
137
|
+
{
|
|
138
|
+
for (var y = 0; y < bitmap.Height; y++)
|
|
139
|
+
{
|
|
140
|
+
if (0 < bitmap.GetPixel(x, y).B)
|
|
141
|
+
{
|
|
142
|
+
if (region == null)
|
|
143
|
+
region = new Region(new Rectangle(x * 8, y * 8, 8, 8));
|
|
144
|
+
else
|
|
145
|
+
region.Union(new Rectangle(x * 8, y * 8, 8, 8));
|
|
146
|
+
}
|
|
147
|
+
}
|
|
148
|
+
}
|
|
149
|
+
bitmap.Dispose();
|
|
150
|
+
}
|
|
151
|
+
|
|
152
|
+
private void PictureBox2_Paint(object sender, PaintEventArgs e)
|
|
153
|
+
{
|
|
154
|
+
if (region == null) return;
|
|
155
|
+
|
|
156
|
+
var colorref = new COLORREF(Color.Red);
|
|
157
|
+
var hdc = IntPtr.Zero;
|
|
158
|
+
var hbrush = IntPtr.Zero;
|
|
159
|
+
var hrgn = IntPtr.Zero;
|
|
160
|
+
|
|
161
|
+
try
|
|
162
|
+
{
|
|
163
|
+
hrgn = region.GetHrgn(e.Graphics);
|
|
164
|
+
hdc = e.Graphics.GetHdc();
|
|
165
|
+
hbrush = CreateSolidBrush(colorref.colorref);
|
|
166
|
+
|
|
167
|
+
FrameRgn(hdc, hrgn, hbrush, 2, 2);
|
|
168
|
+
}
|
|
169
|
+
finally
|
|
170
|
+
{
|
|
171
|
+
if (hrgn != IntPtr.Zero) region.ReleaseHrgn(hrgn);
|
|
172
|
+
if (hbrush != IntPtr.Zero) DeleteObject(hbrush);
|
|
173
|
+
if (hdc != IntPtr.Zero) e.Graphics.ReleaseHdc(hdc);
|
|
174
|
+
}
|
|
175
|
+
}
|
|
176
|
+
|
|
177
|
+
[DllImport("gdi32")] static extern bool FrameRgn(IntPtr hDC, IntPtr hRgn, IntPtr hBrush, int nWidth, int nHeight);
|
|
178
|
+
[DllImport("gdi32")] static extern IntPtr CreateSolidBrush(uint colorref);
|
|
179
|
+
[DllImport("gdi32")] static extern bool DeleteObject([In] IntPtr hObject);
|
|
180
|
+
|
|
181
|
+
[StructLayout(LayoutKind.Explicit)]
|
|
182
|
+
struct COLORREF
|
|
183
|
+
{
|
|
184
|
+
[FieldOffset(0)] public uint colorref;
|
|
185
|
+
[FieldOffset(0)] public byte red;
|
|
186
|
+
[FieldOffset(1)] public byte green;
|
|
187
|
+
[FieldOffset(2)] public byte blue;
|
|
188
|
+
|
|
189
|
+
public COLORREF(Color color) : this()
|
|
190
|
+
{
|
|
191
|
+
red = color.R;
|
|
192
|
+
green = color.G;
|
|
193
|
+
blue = color.B;
|
|
194
|
+
}
|
|
195
|
+
}
|
|
196
|
+
}
|
|
197
|
+
|
|
198
|
+
class MyPictureBox : PictureBox
|
|
199
|
+
{
|
|
200
|
+
protected override void OnPaint(PaintEventArgs e)
|
|
201
|
+
{
|
|
202
|
+
e.Graphics.InterpolationMode = InterpolationMode.NearestNeighbor;
|
|
203
|
+
e.Graphics.PixelOffsetMode = PixelOffsetMode.Half;
|
|
204
|
+
base.OnPaint(e);
|
|
205
|
+
}
|
|
206
|
+
}
|
|
207
|
+
}
|
|
208
|
+
```
|
|
209
|
+
|
2
改行
test
CHANGED
|
@@ -6,6 +6,7 @@
|
|
|
6
6
|
> とりあえず原始的(?)に，画素単位で「この画素は範囲の内側か外側か」を調べていけば，境界を見つけること自体はできるでしょうから，そういう方法で全て自前で頑張って「どの画素のどちら側に点線を引くべきか」みたいなのをやるしかないのでしょうか？
|
|
7
7
|
|
|
8
8
|
標準のペイントでは中か外かは特にないというか、~~マウス軌跡そのままに引いているように見えます~~（ドット単位に境界はなく拡大すると線からはみ出るドットがあったりする）
|
|
9
|
+
|
|
9
10
|
いやゆっくり引くとガタガタになるので、ポイントごとのスナップ処理はあるんかな？（少なくともドット境界に合わせる気はなさそう^^;
|
|
10
11
|
|
|
11
12
|
|
1
画像追加
test
CHANGED
|
@@ -5,7 +5,10 @@
|
|
|
5
5
|
|
|
6
6
|
> とりあえず原始的(?)に，画素単位で「この画素は範囲の内側か外側か」を調べていけば，境界を見つけること自体はできるでしょうから，そういう方法で全て自前で頑張って「どの画素のどちら側に点線を引くべきか」みたいなのをやるしかないのでしょうか？
|
|
7
7
|
|
|
8
|
-
標準のペイントでは中か外かは特にないというか、マウス軌跡そのままに引いているように見えます（ドット単位に境界はなく拡大すると線からはみ出るドットがあったりする）
|
|
8
|
+
標準のペイントでは中か外かは特にないというか、~~マウス軌跡そのままに引いているように見えます~~（ドット単位に境界はなく拡大すると線からはみ出るドットがあったりする）
|
|
9
|
+
いやゆっくり引くとガタガタになるので、ポイントごとのスナップ処理はあるんかな？（少なくともドット境界に合わせる気はなさそう^^;
|
|
10
|
+
|
|
11
|
+
|
|
9
12
|
|
|
10
13
|
実際のところ選択範囲の移動等を考えると、`GraphicsPath`でやることになるかと思います。
|
|
11
14
|
[GraphicsPath クラス (System.Drawing.Drawing2D) | Microsoft Learn](https://learn.microsoft.com/ja-jp/dotnet/api/system.drawing.drawing2d.graphicspath)
|