| public Shear ( float shearX, float shearY ) : void | ||
| shearX | float | |
| shearY | float | |
| return | void | |
private void Form1_Paint(object sender, PaintEventArgs e)
{
using (Graphics g = e.Graphics)
{
// Создаем траекторию
GraphicsPath path = new GraphicsPath();
Rectangle rect = new Rectangle(20, 20, 150, 150);
path.AddRectangle(rect);
// Создаем градиентную кисть
PathGradientBrush pgBrush =
new PathGradientBrush(path.PathPoints);
// Уснинавливаем цвета кисти
pgBrush.CenterColor = Color.Red;
pgBrush.SurroundColors = new Color[] { Color.Blue };
// Создаем объект Matrix
Matrix X = new Matrix();
// Translate
X.Translate(30.0f, 10.0f, MatrixOrder.Append);
// Rotate
X.Rotate(10.0f, MatrixOrder.Append);
// Scale
X.Scale(1.2f, 1.0f, MatrixOrder.Append);
// Shear
X.Shear(.2f, 0.03f, MatrixOrder.Prepend);
// Применяем преобразование к траектории и кисти
path.Transform(X);
pgBrush.Transform = X;
// Выполняем визуализацию
g.FillPath(pgBrush, path);
}
}
static public Matrix GetMatrix (int index)
{
// not defined (-1) or first (0)
if (index <= 0)
return null;
Matrix m = new Matrix ();
switch (index) {
case 1:
// empty
break;
case 2:
m.Rotate (15);
break;
case 3:
m.RotateAt (45, new PointF (100, 100));
break;
case 4:
m.Scale (1.5f, 0.5f);
break;
case 5:
m.Shear (2.0f, 2.0f);
break;
case 6:
m.Translate (50, 50);
break;
}
return m;
}
/// <summary>
/// 创建图片
/// </summary>
/// <param name="str"></param>
public void CreateImage(string validateCode)
{
int width = validateCode.Length * 30;
Random rand = new Random();
Bitmap bmp = new Bitmap(width + validateCode.Length * 3, 50);
Graphics g = Graphics.FromImage(bmp);
g.Clear(Color.FromArgb(255, 255, 255));
DrawLine(g, bmp, RANDOM_LINE_COUNT);
DrawPrint(bmp, RANDOM_PRINT_COUNT);
for (int i = 0; i < validateCode.Length; i++)
{
Matrix matrix = new Matrix();
matrix.Shear((float)_random.Next(0, 300) / 1000 - 0.25f, (float)_random.Next(0, 100) / 1000 - 0.05f);
g.Transform = matrix;
string str = validateCode.Substring(i, 1);
LinearGradientBrush brush = new LinearGradientBrush(new Rectangle(0, 0, bmp.Width, bmp.Height), Color.Blue, Color.DarkRed, 1.2f, true);
Point pos = new Point(i * 30 + 1 + rand.Next(3), 1 + rand.Next(5));
Font font = new Font(Fonts[_random.Next(Fonts.Length - 1)], _random.Next(24, 30), FontStyle.Bold);
g.DrawString(str, font, brush, pos);
}
MemoryStream ms = new MemoryStream();
bmp.Save(ms, ImageFormat.Png);
Response.ClearContent();
Response.ContentType = "image/png";
Response.BinaryWrite(ms.ToArray());
g.Dispose();
bmp.Dispose();
Response.End();
}
/// <summary>
/// Applies matrix transformation to graphics
/// </summary>
private static void TransformCoordinates()
{
using (var bitmap = new Bitmap(600, 300, PixelFormat.Format24bppRgb, RgbColor.White))
using (var graphics = bitmap.GetAdvancedGraphics())
{
// Move coordinate system
var matrix1 = new System.Drawing.Drawing2D.Matrix();
matrix1.Translate(bitmap.Width / 2, bitmap.Height / 2);
graphics.Transform = matrix1;
DrawEllipseAndText(graphics, 30);
// Move, shear and rotate coordinate system
var matrix2 = new System.Drawing.Drawing2D.Matrix();
matrix2.Translate(bitmap.Width / 2, bitmap.Height / 2);
matrix2.Shear(0.5f, 0.1f);
matrix2.Rotate(30f);
graphics.Transform = matrix2;
DrawEllipseAndText(graphics, 255);
bitmap.Save("../../../../_Output/TransformCoordinates.png");
}
}
public Color[,] shear(Color[,] Org_Buffer, float sx, float sy)
{
flag_rotate_shear = true;
Matrix M = new Matrix();
M.Shear((float)sx, (float)sy);
return Transform(Org_Buffer, M);
}
public override void Draw(CGRect rect)
{
Graphics g = Graphics.FromCurrentContext ();
int offset = 20;
// Scale:
var m = new Matrix(1, 2, 3, 4, 0, 1);
g.DrawString ("Original Matrix:", Font, Brushes.Black, 10, 10);
DrawMatrix (m, g, 10, 10 + offset);
g.DrawString ("Scale - Prepend:", Font, Brushes.Black, 10, 10 + 2 * offset);
m.Scale (1, 0.5f, MatrixOrder.Prepend);
DrawMatrix (m, g, 10, 10 + 3 * offset);
g.DrawString ("Scale - Append:", Font, Brushes.Black, 10, 10 + 4 * offset);
m = new Matrix (1, 2, 3, 4, 0, 1);
m.Scale (1, 0.5f, MatrixOrder.Append);
DrawMatrix (m, g, 10, 10 + 5 * offset);
// Translation:
m = new Matrix (1, 2, 3, 4, 0, 1);
g.DrawString ("Translation - Prepend:", Font, Brushes.Black, 10, 10 + 6 * offset);
m.Translate (1, 0.5f, MatrixOrder.Prepend);
DrawMatrix (m, g, 10, 10 + 7 * offset);
g.DrawString ("Translation - Append:", Font, Brushes.Black, 10, 10 + 8 * offset);
// Reset m to the original matrix:
m = new Matrix(1, 2, 3, 4, 0, 1);
m.Translate (1, 0.5f, MatrixOrder.Append);
DrawMatrix (m, g, 10, 10 + 9 * offset);
m = new Matrix (1, 2, 3, 4, 0, 1);
g.DrawString ("Rotation - Prepend:", Font, Brushes.Black, 10, 10 + 10 * offset);
m.Rotate (45, MatrixOrder.Prepend);
DrawMatrix (m, g, 10, 10 + 11 * offset);
g.DrawString ("Rotation - Append:", Font, Brushes.Black, 10, 10 + 12 * offset);
// Reset m to the original matrix:
m = new Matrix (1, 2, 3, 4, 0, 1);
m.Rotate (45, MatrixOrder.Append);
DrawMatrix (m, g, 10, 10 + 13 * offset);
// Rotation at (x = 1, y = 2):
m = new Matrix (1, 2, 3, 4, 0, 1);
g.DrawString ("Rotation At - Prepend:", Font, Brushes.Black, 10, 10 + 14 * offset);
m.RotateAt (45, new Point (1, 2), MatrixOrder.Prepend);
DrawMatrix (m, g, 10, 10 + 15 * offset);
g.DrawString ("Rotation At - Append:", Font, Brushes.Black, 10, 10 + 16 * offset);
m = new Matrix (1, 2, 3, 4, 0, 1);
m.RotateAt (45, new Point (1, 2), MatrixOrder.Append);
DrawMatrix(m, g, 10, 10 + 17 * offset);
// Shear:
m = new Matrix (1, 2, 3, 4, 0, 1);
g.DrawString ("Shear - Prepend:", Font, Brushes.Black, 10, 10 + 18 * offset);
m.Shear (1, 2, MatrixOrder.Prepend);
DrawMatrix (m, g, 10, 10 + 19 * offset);
g.DrawString ("Shear - Append:", Font, Brushes.Black, 10, 10 + 20 * offset);
// Reset m to the original matrix:
m = new Matrix (1, 2, 3, 4, 0, 1);
m.Shear (1, 2, MatrixOrder.Append);
DrawMatrix (m, g, 10, 10 + 21 * offset);
}
public void full_transform(float ScX, float ScY, float ShX, float ShY, float RoAngle)
{
Matrix transform_matrix = new Matrix();
transform_matrix.Scale(ScX, ScY, MatrixOrder.Append);
transform_matrix.Shear(ShX, ShY, MatrixOrder.Append);
transform_matrix.Rotate(RoAngle, MatrixOrder.Append);
Transform(transform_matrix);
}
/// <summary>
/// If the any of the would to cameraSpace variables are updated will recalculate the cameraTransform
/// </summary>
private void updateCameraTransform()
{
if (cameraTransformChanged)
{
//Reseting camera Transform
cameraTransform.Reset();
//Translation to origin
cameraTransform.Translate(-worldCenter.X, -worldCenter.Y, MatrixOrder.Append);;
//Scale
if (worldScale.X != 0 && worldScale.Y != 0 && (worldScale.X != 1 || worldScale.Y != 1))
{
cameraTransform.Scale(worldScale.X, worldScale.Y, MatrixOrder.Append);
}
//Shear
if ((worldShear.X != 1 || worldShear.Y != 1) && (worldShear.X != 0 || worldShear.Y != 0))
{
cameraTransform.Shear(worldShear.X, worldShear.Y, MatrixOrder.Append);
}
//Rotation
if (worldRotation != 0)
{
cameraTransform.Rotate(worldRotation, MatrixOrder.Append);
}
//Moving Center to Centr
if (drawBuffers != null)
{
cameraTransform.Translate(drawBuffers[0].Width / 2, drawBuffers[0].Height / 2, MatrixOrder.Append);
}
else
{
cameraTransform.Translate(base.Width / 2, base.Height / 2, MatrixOrder.Append);
}
cameraTransformChanged = false;
//invers Transform
setInverseCameraTransform();
if (attachedMouse != null)
{
attachedMouse.setTransform(inverseCameraTransform);
}
}
}
private void Form1_Paint(object sender, PaintEventArgs e)
{
using (Graphics g = e.Graphics)
{
try
{
// рисуем изображение без трасформаций
g.DrawImage(new Bitmap(@"Boxs.bmp"), 0, 0, 100, 100);
}
catch { }
// Создаем матрицу
Matrix X = new Matrix();
// Установка трансформаций
X.RotateAt(45,new Point(150,150));
X.Translate(100, 100);
g.Transform = X;
try
{
// рисуем изображение
g.DrawImage(new Bitmap(@"Rings.bmp"), 0, 0, 100, 100);
}
catch { }
// Сброс трансформаций
X.Reset();
// Установка трансформаций
X.RotateAt(25, new Point(50, 150));
X.Translate(150, 10);
X.Shear(0.5f, 0.3f);
g.Transform = X;
try
{
// рисуем изображение
g.DrawImage(new Bitmap(@"Cells.bmp"), 0, 0, 100, 100);
}
catch { }
}
}
public static Image TransformImage(Image img, float theta, float shearx, float sheary, float scalex, float scaley)
{
var rd_theta = (float)(theta * Math.PI / 180.0);
float cos_theta = (float)Math.Cos(rd_theta);
float sin_theta = (float)Math.Sin(rd_theta);
Matrix sizeMat = new Matrix();
sizeMat.Scale(scalex, scaley);
sizeMat.Rotate(theta);
sizeMat.Shear(shearx, sheary);
Point[] cornerPoints = new Point[4]
{
new Point(0,0),
new Point((int)img.Width,0),
new Point(0,(int)img.Height),
new Point((int)img.Width,(int)img.Height)
};
sizeMat.TransformPoints(cornerPoints);
var minX = Math.Min(cornerPoints[0].X,
Math.Min(cornerPoints[1].X, Math.Min(cornerPoints[2].X, cornerPoints[3].X)));
var maxX = Math.Max(cornerPoints[0].X,
Math.Max(cornerPoints[1].X, Math.Max(cornerPoints[2].X, cornerPoints[3].X)));
var minY = Math.Min(cornerPoints[0].Y,
Math.Min(cornerPoints[1].Y, Math.Min(cornerPoints[2].Y, cornerPoints[3].Y)));
var maxY = Math.Max(cornerPoints[0].Y,
Math.Max(cornerPoints[1].Y, Math.Max(cornerPoints[2].Y, cornerPoints[3].Y)));
//float fnew_width = Math.Abs(sin_theta) * img.Height + Math.Abs(cos_theta) * img.Width;
//float fnew_height = Math.Abs(sin_theta) * img.Width + Math.Abs(cos_theta) * img.Height;
float fnew_width = maxX - minX;
float fnew_height = maxY - minY;
Matrix mat = new Matrix();
mat.Translate(fnew_width / 2, fnew_height / 2);
mat.Scale(scalex, scaley);
mat.Rotate(theta);
mat.Shear(shearx, sheary);
Image result = new Image((uint)fnew_width, (uint)fnew_height, img.Components);
mat.Translate(-img.Width / 2, -img.Height / 2);
float ih = img.Height;
mat.Invert();
PointF[] op_point = new PointF[1];
for (uint y = 0; y < result.Height; y++)
{
for (uint x = 0; x < result.Width; x++)
{
op_point[0] = new PointF((int)x, (int)y);
mat.TransformPoints(op_point);
float p_x = op_point[0].X;
float p_y = op_point[0].Y;
int absX = (int)op_point[0].X;
int absY = (int)op_point[0].Y;
if (p_x < img.Width - 1 && p_y < img.Height - 1 && p_x >= 0 && p_y >= 0)
{
int X1 = absX;
int X2 = X1 + 1;
int Y1 = absY;
int Y2 = Y1 + 1;
Pixel P1 = img.getPixel((uint)X1, (uint)Y1);
Pixel P2 = img.getPixel((uint)X2, (uint)Y1);
Pixel P3 = img.getPixel((uint)X1, (uint)Y2);
Pixel P4 = img.getPixel((uint)X2, (uint)Y2);
float x_frac = p_x - (float)X1;
float y_frac = p_y - (float)Y1;
float Z1R = (float)(P1.R) * (1f - x_frac) + P2.R * x_frac;
float Z1G = (float)(P1.G) * (1f - x_frac) + P2.G * x_frac;
float Z1B = (float)(P1.B) * (1f - x_frac) + P2.B * x_frac;
float Z2R = (float)(P3.R) * (1f - x_frac) + P4.R * x_frac;
float Z2G = (float)(P3.G) * (1f - x_frac) + P4.G * x_frac;
float Z2B = (float)(P3.B) * (1f - x_frac) + P4.B * x_frac;
int R = (int)(Z1R * (1f - y_frac) + Z2R * y_frac);
int G = (int)(Z1G * (1f - y_frac) + Z2G * y_frac);
int B = (int)(Z1B * (1f - y_frac) + Z2B * y_frac);
Color c = Color.FromArgb(R, G, B);
result.setPixel(x, y, new Pixel(c.R, c.G, c.B, 255));
}
}
}
return result;
}
public void shear(float ShearX, float ShearY, Interpolation interpol = Interpolation.Bilinear)
{
Matrix transform_matrix = new Matrix();
transform_matrix.Shear(ShearX, ShearY);
Transform(transform_matrix, interpol);
}
public void full_transform(float ScX, float ScY, float ShX, float ShY, float RoAngle, Interpolation interpol = Interpolation.Bilinear)
{
Matrix transform_matrix = new Matrix();
transform_matrix.Shear(ShX, ShY);
transform_matrix.Rotate(RoAngle, MatrixOrder.Prepend);
transform_matrix.Scale(ScX, ScY, MatrixOrder.Prepend);
Transform(transform_matrix, interpol);
}
public override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
Graphics g = e.Graphics;
if (Bounds.Width > 0 && Bounds.Height > 0)
{
RenderBackground(g, Bounds);
int dx = (int)(Bounds.Width * .2f);
int dy = (int)(Bounds.Height * .2f);
Rectangle r = Bounds;
r.Inflate(-dx, -dy);
Rectangle srcRect = new Rectangle(0, 0, _ElemWidth, _ElemHeight);
GraphicsContainer containerState = g.BeginContainer(r, srcRect, GraphicsUnit.Pixel);
g.SmoothingMode = SmoothingMode.AntiAlias;
g.PixelOffsetMode = PixelOffsetMode.Default;
if (NumIndicator.ShearFactor != 0)
{
Matrix trans = new Matrix();
trans.Shear(NumIndicator.ShearFactor, 0.0F);
g.Transform = trans;
}
Brush brushOn = BrushOn;
Brush brushOff = BrushOff;
RenderSegments(g, brushOn, brushOff);
RenderPoints(g, brushOn, brushOff);
g.EndContainer(containerState);
}
}
public override void DrawRect(System.Drawing.RectangleF dirtyRect)
{
Graphics g = new Graphics();
int offset = 20;
// Scale:
Matrix m = new Matrix(1, 2, 3, 4, 0, 1);
g.DrawString("Original Matrix:", this.Font,
Brushes.Black, 10, 10);
DrawMatrix(m, g, 10, 10 + offset);
g.DrawString("Scale - Prepend:", this.Font,
Brushes.Black, 10, 10 + 2 * offset);
m.Scale(1, 0.5f, MatrixOrder.Prepend);
DrawMatrix(m, g, 10, 10 + 3 * offset);
g.DrawString("Scale - Append:", this.Font,
Brushes.Black, 10, 10 + 4 * offset);
// Reset m to the original matrix:
m = new Matrix(1, 2, 3, 4, 0, 1);
m.Scale(1, 0.5f, MatrixOrder.Append);
DrawMatrix(m, g, 10, 10 + 5 * offset);
// Translation:
m = new Matrix(1, 2, 3, 4, 0, 1);
g.DrawString("Translation - Prepend:", this.Font,
Brushes.Black, 10, 10 + 6 * offset);
m.Translate(1, 0.5f, MatrixOrder.Prepend);
DrawMatrix(m, g, 10, 10 + 7 * offset);
g.DrawString("Translation - Append:", this.Font,
Brushes.Black, 10, 10 + 8 * offset);
// Reset m to the original matrix:
m = new Matrix(1, 2, 3, 4, 0, 1);
m.Translate(1, 0.5f, MatrixOrder.Append);
DrawMatrix(m, g, 10, 10 + 9 * offset);
// Rotation:
m = new Matrix(1, 2, 3, 4, 0, 1);
g.DrawString("Rotation - Prepend:", this.Font,
Brushes.Black, 10, 10 + 10 * offset);
m.Rotate(45, MatrixOrder.Prepend);
DrawMatrix(m, g, 10, 10 + 11 * offset);
g.DrawString("Rotation - Append:", this.Font,
Brushes.Black, 10, 10 + 12 * offset);
// Reset m to the original matrix:
m = new Matrix(1, 2, 3, 4, 0, 1);
m.Rotate(45, MatrixOrder.Append);
DrawMatrix(m, g, 10, 10 + 13 * offset);
// Rotation at (x = 1, y = 2):
m = new Matrix(1, 2, 3, 4, 0, 1);
g.DrawString("Rotation At - Prepend:", this.Font,
Brushes.Black, 10, 10 + 14 * offset);
m.RotateAt(45, new PointF(1, 2), MatrixOrder.Prepend);
DrawMatrix(m, g, 10, 10 + 15 * offset);
g.DrawString("Rotation At - Append:", this.Font,
Brushes.Black, 10, 10 + 16 * offset);
// Reset m to the original matrix:
m = new Matrix(1, 2, 3, 4, 0, 1);
m.RotateAt(45, new PointF(1, 2), MatrixOrder.Append);
DrawMatrix(m, g, 10, 10 + 17 * offset);
// Shear:
m = new Matrix(1, 2, 3, 4, 0, 1);
g.DrawString("Shear - Prepend:", this.Font,
Brushes.Black, 10, 10 + 18 * offset);
m.Shear(1, 2, MatrixOrder.Prepend);
DrawMatrix(m, g, 10, 10 + 19 * offset);
g.DrawString("Shear - Append:", this.Font,
Brushes.Black, 10, 10 + 20 * offset);
// Reset m to the original matrix:
m = new Matrix(1, 2, 3, 4, 0, 1);
m.Shear(1, 2, MatrixOrder.Append);
DrawMatrix(m, g, 10, 10 + 21 * offset);
}
public void Transform_Matrix()
{
path = new GraphicsPath ();
path.AddLine (new Point (100, 100), new Point (200, 100));
path.AddLine (new Point (200, 200), new Point (10, 100));
path.StartFigure();
path.AddBezier( 10, 10, 50, 250, 100, 5, 200, 280);
path.StartFigure();
path.AddRectangle (new Rectangle (10, 20, 200, 200));
path.StartFigure();
path.AddLine (new Point (200, 200), new Point (200, 10));
Matrix matrix = new Matrix ();
matrix.Scale (1.2f, 1.4f);
matrix.Shear (0.9f, -1.15f);
matrix.Rotate (5);
path.Transform (matrix);
PointF [] expectedPoints = new PointF [] { new PointF(226.0865f, 5.313778f),
new PointF(355.0427f, -142.8718f),
new PointF(452.173f, 10.62756f),
new PointF(110.0259f, 138.6808f),
new PointF(22.60865f, 0.5313778f),
new PointF(307.3039f, 309.6555f),
new PointF(133.8127f, -140.5106f),
new PointF(529.8773f, 133.427f),
new PointF(32.32168f, 15.88131f),
new PointF(290.234f, -280.4898f),
new PointF(484.4947f, 26.50887f),
new PointF(226.5823f, 322.8799f),
new PointF(452.173f, 10.62756f),
new PointF(267.6254f, -281.0212f)};
for(int i = 0; i < path.PointCount; i++) {
DrawingTest.AssertAlmostEqual(expectedPoints [i], path.PathPoints [i]);
}
byte [] expectedTypes = new byte [] { (byte) PathPointType.Start,
(byte) PathPointType.Line,
(byte) PathPointType.Line,
(byte) PathPointType.Line,
(byte) PathPointType.Start,
(byte) PathPointType.Bezier3,
(byte) PathPointType.Bezier3,
(byte) PathPointType.Bezier3,
(byte) PathPointType.Start,
(byte) PathPointType.Line,
(byte) PathPointType.Line,
(byte) (PathPointType.Line | PathPointType.CloseSubpath),
(byte) PathPointType.Start,
(byte) PathPointType.Line};
for (int i=0; i < expectedTypes.Length; i++) {
Assert.AreEqual (expectedTypes [i], path.PathTypes [i]);
}
t.Graphics.DrawPath (p, path);
t.Show ();
//t.AssertCompare ();
}
public void GetBounds_Matrix_Pen()
{
path = new GraphicsPath ();
path.AddLine (new Point (100, 100), new Point (400, 100));
path.AddLine (new Point (400, 200), new Point (10, 100));
path.StartFigure ();
path.AddBezier( 10, 10, 50, 250, 100, 5, 200, 280);
path.StartFigure ();
path.AddRectangle (new Rectangle (10, 20, 300, 400));
path.StartFigure ();
path.AddLine (new Point (400, 400), new Point (400, 10));
Matrix matrix = new Matrix ();
matrix.Scale (0.2f,0.3f);
matrix.Shear (0.5f, 0.5f);
Pen p = new Pen (Color.AliceBlue, 45);
RectangleF actual = path.GetBounds (matrix, p);
RectangleF expected = new RectangleF (21f, 31.2f, 2758.363f, 3046.163f);
// we do not know exacly how the bounding rectangle
// is calculated so we just want to obtain bounds
// that still contain the path widened by oen and transformed by matrix
path.Widen (p, matrix);
RectangleF widened = path.GetBounds ();
Assert.IsTrue (actual.Contains (widened));
// DrawingTest.AssertAlmostEqual(expected.X, actual.X);
// DrawingTest.AssertAlmostEqual(expected.Y, actual.Y);
// DrawingTest.AssertAlmostEqual(expected.Width, actual.Width);
// DrawingTest.AssertAlmostEqual(expected.Height, actual.Height);
path = new GraphicsPath ();
path.AddLine (new Point (100, 100), new Point (400, 100));
path.AddLine (new Point (400, 200), new Point (10, 100));
path.StartFigure ();
path.AddBezier( 10, 10, 50, 250, 100, 5, 200, 280);
path.StartFigure ();
path.AddRectangle (new Rectangle (10, 20, 300, 400));
path.StartFigure ();
path.AddLine (new Point (400, 400), new Point (400, 10));
p = new Pen (Color.AliceBlue, 45);
p.DashCap = DashCap.Triangle;
p.DashStyle = DashStyle.Dash;
actual = path.GetBounds (matrix, p);
expected = new RectangleF (21f, 31.2f, 2758.363f, 3046.163f);
// we do not know exacly how the bounding rectangle
// is calculated so we just want to obtain bounds
// that still contain the path widened by oen and transformed by matrix
path.Widen (p, matrix);
widened = path.GetBounds ();
Assert.IsTrue (actual.Contains (widened));
// DrawingTest.AssertAlmostEqual(expected.X, actual.X);
// DrawingTest.AssertAlmostEqual(expected.Y, actual.Y);
// DrawingTest.AssertAlmostEqual(expected.Width, actual.Width);
// DrawingTest.AssertAlmostEqual(expected.Height, actual.Height);
//t.AssertCompare ();
}
void ProjectiveLetter()
{
try
{
Bitmap bmp = new Bitmap(300, 200);
Graphics g = Graphics.FromImage(bmp);
g.Clear(Color.White);
g.TextRenderingHint = TextRenderingHint.ClearTypeGridFit; //设置文本输出的质量
g.SmoothingMode = SmoothingMode.AntiAlias; //消除绘制时出现的锯齿
Font font = new Font("宋体", 48);
Matrix martix = new Matrix();
martix.Shear(-1.4F, 0.0F); //设置投影
martix.Scale(1, 0.5F); //设置缩放
martix.Translate(168, 118); //设置平移
g.Transform = martix; //设置坐标平面变换
SolidBrush wordBrush = new SolidBrush(Color.Gray); //设置文字的画刷
SolidBrush shadowBrush = new SolidBrush(Color.SlateBlue); //设置投影的画刷
string str = "Test";
g.DrawString(str, font, wordBrush, new PointF(0, 60));
g.ResetTransform(); //变换矩阵重置为单位矩阵
g.DrawString(str, font, shadowBrush, new PointF(0, 60));
MemoryStream ms = new MemoryStream();
bmp.Save(ms, ImageFormat.Gif);
Response.ClearContent();
Response.ContentType = "image/Gif";
Response.BinaryWrite(ms.ToArray());
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
}
public static RotateMatrix Rotate(
double angle
, double centerX
, double centerY
, double width
, double height
, double scaleX
, double scaleY
, double shearX
, double shearY
, double drawOffsetX
, double drawOffsetY
)
{
float angleF = (float)angle;
float centerXF = (float)centerX;
float centerYF = (float)centerY;
float widthF = (float)width;
float heightF = (float)height;
float scaleXF = (float)scaleX;
float scaleYF = (float)scaleY;
float shearXF = (float)shearX;
float shearYF = (float)shearY;
float drawOffsetXF = (float)drawOffsetX;
float drawOffsetYF = (float)drawOffsetY;
PointF offset = new PointF();
PointF ur = new PointF();
Matrix matrix = new Matrix();
PointF center = new PointF(centerXF, centerYF);
angleF = angleF % 360;
if (angleF < 0)
{
angleF += 360;
}
if (angleF % 90 == 0)
{
angleF += 0.01f;
}
widthF = centerXF * 2 * scaleXF;
heightF = centerYF * 2 * scaleYF;
matrix.Scale(scaleXF, scaleYF);
matrix.Shear(shearXF, shearYF);
matrix.RotateAt(angleF, center);
offset.X = matrix.OffsetX;
offset.Y = matrix.OffsetY;
float rs, rc;
rs = (float)Math.Sin(angleF * Math.PI / 180);
rc = (float)Math.Cos(angleF * Math.PI / 180);
ur.X = rc * widthF;
ur.Y = rs * widthF;
ur.X += matrix.OffsetX;
ur.Y += matrix.OffsetY;
angleF = angleF % 360;
if (angleF >= 0 && angleF <= 90)
{
offset.X = ur.X - widthF;
offset.Y = -matrix.OffsetY;
}
else if (angleF > 90 && angleF < 180)
{
offset.X = -widthF + matrix.OffsetX;
offset.Y = ur.Y - heightF;
}
else if (angleF >= 180 && angleF <= 270)
{
offset.X = -ur.X;
offset.Y = matrix.OffsetY - heightF;
}
else
{
offset.X = -matrix.OffsetX;
offset.Y = -ur.Y;
}
matrix.RotateAt(-angleF, center);
matrix.Translate(offset.X / scaleXF, offset.Y / scaleYF);
//matrix.Translate(offset.X / scaleXF + drawOffsetXF / scaleXF, offset.Y / scaleYF + drawOffsetYF / scaleYF);
matrix.RotateAt(angleF, center);
RotateMatrix rm = new RotateMatrix(matrix, angleF, -offset.X, -offset.Y, widthF, heightF);
rm.AbsoluteOffset = new PointF(drawOffsetXF, drawOffsetYF);
return rm;
}
private void SevenSegment_Paint(object sender, PaintEventArgs e)
{
int useValue = customPattern;
Brush brushLight = new SolidBrush(colorLight);
Brush brushDark = new SolidBrush(colorDark);
// Define transformation for our container...
RectangleF srcRect = new RectangleF(0.0F, 0.0F, gridWidth, gridHeight);
RectangleF destRect = new RectangleF(Padding.Left, Padding.Top, this.Width - Padding.Left - Padding.Right, this.Height - Padding.Top - Padding.Bottom);
// Begin graphics container that remaps coordinates for our convenience
GraphicsContainer containerState = e.Graphics.BeginContainer(destRect, srcRect, GraphicsUnit.Pixel);
Matrix trans = new Matrix();
trans.Shear(italicFactor, 0.0F);
e.Graphics.Transform = trans;
e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
e.Graphics.PixelOffsetMode = PixelOffsetMode.Default;
// Draw elements based on whether the corresponding bit is high
e.Graphics.FillPolygon((useValue & 0x1) == 0x1 ? brushLight : brushDark, segPoints[0]);
e.Graphics.FillPolygon((useValue & 0x2) == 0x2 ? brushLight : brushDark, segPoints[1]);
e.Graphics.FillPolygon((useValue & 0x4) == 0x4 ? brushLight : brushDark, segPoints[2]);
e.Graphics.FillPolygon((useValue & 0x8) == 0x8 ? brushLight : brushDark, segPoints[3]);
e.Graphics.FillPolygon((useValue & 0x10) == 0x10 ? brushLight : brushDark, segPoints[4]);
e.Graphics.FillPolygon((useValue & 0x20) == 0x20 ? brushLight : brushDark, segPoints[5]);
e.Graphics.FillPolygon((useValue & 0x40) == 0x40 ? brushLight : brushDark, segPoints[6]);
if (showDot)
e.Graphics.FillEllipse(dotOn ? brushLight : brushDark, gridWidth - 1, gridHeight - elementWidth + 1, elementWidth, elementWidth);
e.Graphics.EndContainer(containerState);
}
/**
You can use this matrix as follows:
1 - Create new object with identity matrix (empty constructor)
2 - Apply a set of transformations that you want to this matrix
3 - Transform the four corners of the original image to calculate
4 - The min X and min Y of the transformed image
5 - The width & height of the new image buffer
6 - Translate this matrix by (- min X, - min Y)
7 - Invert the matrix
8 - Use the inverted version to reverse transform all new locations in the new image buffer
**/
public Bitmap perform_concat_matrices_operations(bufferedLockBitmap _src_img, float _shear_x = (float)0, float _shear_y = (float)0, float _scale_x = (float)1, float _scale_y = (float)1, float _rotate_theta = (float)0)
{
bufferedLockBitmap ret;
// 1 - Create new object with identity matrix (empty constructor)
Matrix transformations_matrix = new Matrix();
// 2 - Apply a set of transformations that you want to this matrix
transformations_matrix.Rotate(_rotate_theta, MatrixOrder.Append);
transformations_matrix.Scale(_scale_x, _scale_y, MatrixOrder.Append);
transformations_matrix.Shear(_shear_x, _shear_y, MatrixOrder.Append);
// 3 - Transform the four corners of the original image to calculate
/**
* To get the size of the new (destination) image,
* apply the forward mapping to the four corners of the original image
* ([0,0], [W-1,0], [0,H-1], [W-1,H-1])
* to get their new locations.
* Then use these new four locations to get the width and height of the destination image
* (e.g. to get new width:
* find min X & max X of the four new points and subtract them,
* do the same for Y to get the new height)
*/
Point[] corner_points = {
new Point(0, 0),
new Point(_src_img.source.Width - 1, 0),
new Point(0, _src_img.source.Height - 1),
new Point(_src_img.source.Width - 1, _src_img.source.Height - 1)
};
transformations_matrix.TransformPoints(corner_points);
int min_x = find_min_x(corner_points);
int min_y = find_min_y(corner_points);
int max_x = find_max_x(corner_points);
int max_y = find_max_y(corner_points);
int new_width =Math.Abs(Math.Abs(max_x) - Math.Abs(min_x));//edited
int new_height = Math.Abs(max_y) - Math.Abs(min_y);//edited
// 4 - The min X and min Y of the transformed image
/**
* To make the transformed image totally fit inside the buffer, a translation with (- min X, - min Y) should be appended to the original transformation matrix (W) before inverting it.
*/
// 6 - Translate this matrix by (- min X, - min Y)
transformations_matrix.Translate(-min_x, -min_y, MatrixOrder.Append);
// 7 - Invert the matrix
transformations_matrix.Invert();
// 8 - Use the inverted version to reverse transform all new locations in the new image buffer
return apply_transformation_matrix_to_bitmap_or_buffer(transformations_matrix, _src_img, new_width, new_height).source;
}
public void Shear ()
{
Matrix matrix = new Matrix (10, 20, 30, 40, 50, 60);
matrix.Shear (2, 4);
Assert.AreEqual (130, matrix.Elements[0], "H#1");
Assert.AreEqual (180, matrix.Elements[1], "H#2");
Assert.AreEqual (50, matrix.Elements[2], "H#3");
Assert.AreEqual (80, matrix.Elements[3], "H#4");
Assert.AreEqual (50, matrix.Elements[4], "H#5");
Assert.AreEqual (60, matrix.Elements[5], "H#6");
matrix = new Matrix (5, 3, 9, 2, 2, 1);
matrix.Shear (10, 20);
Assert.AreEqual (185, matrix.Elements[0], "H#7");
Assert.AreEqual (43, matrix.Elements[1], "H#8");
Assert.AreEqual (59, matrix.Elements[2], "H#9");
Assert.AreEqual (32, matrix.Elements[3], "H#10");
Assert.AreEqual (2, matrix.Elements[4], "H#11");
Assert.AreEqual (1, matrix.Elements[5], "H#12");
}
/// <summary>
/// 生产图片验证码
/// </summary>
/// <returns></returns>
public static Bitmap NextImage(int width = 70, int height = 34, int length = 4)
{
//获取随机字符
Random rand = new Random();
string str = RandomString(length);
HttpContext.Current.Session["verificationCode"] = str;
//创建画板
Bitmap image = new Bitmap(width, height);
Graphics g = Graphics.FromImage(image);
//g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.InterpolationMode = InterpolationMode.Low;
//g.CompositingMode = CompositingMode.SourceOver;
//g.CompositingQuality = CompositingQuality.HighQuality;
g.CompositingQuality = CompositingQuality.HighSpeed;
g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
g.SmoothingMode = SmoothingMode.AntiAlias;
//绘制渐变背景
Rectangle rect = new Rectangle(0, 0, image.Width, image.Height);
Brush brushBack = new LinearGradientBrush(rect, Color.FromArgb(rand.Next(150, 256), 255, 255), Color.FromArgb(255, rand.Next(150, 256), 255), rand.Next(90));
g.FillRectangle(brushBack, rect);
//绘制干扰曲线
for (int i = 0; i < 2; i++)
{
Point p1 = new Point(0, rand.Next(image.Height));
Point p2 = new Point(rand.Next(image.Width), rand.Next(image.Height));
Point p3 = new Point(rand.Next(image.Width), rand.Next(image.Height));
Point p4 = new Point(image.Width, rand.Next(image.Height));
Point[] p = { p1, p2, p3, p4 };
Pen pen = new Pen(Color.Gray, 1);
g.DrawBeziers(pen, p);
}
//逐个绘制文字
for (int i = 0; i < str.Length; i++)
{
string strChar = str.Substring(i, 1);
int deg = rand.Next(-15, 15);
float x = (image.Width / str.Length / 2) + (image.Width / str.Length) * i;
float y = image.Height / 2;
//随机字体大小
Font font = new Font("Consolas", rand.Next(16, 24), FontStyle.Regular);
SizeF size = g.MeasureString(strChar, font);
Matrix m = new Matrix();
//旋转
m.RotateAt(deg, new PointF(x, y), MatrixOrder.Append);
//扭曲
m.Shear(rand.Next(-10, 10) * 0.03f, 0);
g.Transform = m;
//随机渐变画笔
Brush brushPen = new LinearGradientBrush(rect, Color.FromArgb(rand.Next(0, 256), 0, 0), Color.FromArgb(0, 0, rand.Next(0, 256)), rand.Next(90));
g.DrawString(str.Substring(i, 1), font, brushPen, new PointF(x - size.Width / 2, y - size.Height / 2));
g.Transform = new Matrix();
}
g.Save();
g.Dispose();
return image;
}
public static Color[,] Shear(Color[,] sourceBuffer, int oWidth, int oHeight)
{
Color[,] Buff;
Buff = sourceBuffer;
Matrix TrsMat = new Matrix();
TrsMat.Shear(1, 0);
Point[] mypoint = new Point[1];
mypoint[0].X = 0;
mypoint[0].Y = 0;
TrsMat.TransformPoints(mypoint);
int X0 = mypoint[0].X;
int Y0 = mypoint[0].Y;
mypoint[0].X = oWidth;
mypoint[0].Y = 0;
TrsMat.TransformPoints(mypoint);
int X1 = mypoint[0].X;
int Y1 = mypoint[0].Y;
mypoint[0].X = 0;
mypoint[0].Y = oHeight;
TrsMat.TransformPoints(mypoint);
int X2 = mypoint[0].X;
int Y2 = mypoint[0].Y;
mypoint[0].X = oWidth;
mypoint[0].Y = oHeight;
TrsMat.TransformPoints(mypoint);
int X3 = mypoint[0].X;
int Y3 = mypoint[0].Y;
int MinX = Math.Min(X0, X1);
MinX = Math.Min(MinX, X2);
MinX = Math.Min(MinX, X3);
int MinY = Math.Min(Y0, Y1);
MinY = Math.Min(MinY, Y2);
MinY = Math.Min(MinY, Y3);
int MaxX = Math.Max(X0, X1);
MaxX = Math.Max(MaxX, X2);
MaxX = Math.Max(MaxX, X3);
int MaxY = Math.Max(Y0, Y1);
MaxY = Math.Max(MaxY, Y2);
MaxY = Math.Max(MaxY, Y3);
int nWidth = MaxX - MinX;
int nHeight = MaxY - MinY;
TrsMat.Translate(-MinX, -MinY);
TrsMat.Invert();
Buff = new Color[nWidth, nHeight];
for (int i = 0; i < nHeight; i++)
{
for (int j = 0; j < nWidth; j++)
{
mypoint[0].X = j;
mypoint[0].Y = i;
TrsMat.TransformPoints(mypoint);
if (mypoint[0].X < oWidth && mypoint[0].X >= 0 && mypoint[0].Y < oHeight && mypoint[0].Y >= 0)
{
Buff[j, i] = sourceBuffer[mypoint[0].X, mypoint[0].Y];
}
else
{
Buff[j, i] = Color.FromArgb(0);
}
}
}
return Buff;
}
/// <summary>
/// Create Validation Code Image
/// </summary>
private byte[] CreateImage(string str_ValidateCode)
{
int int_ImageWidth = str_ValidateCode.Length * 22;
Random newRandom = new Random();
Bitmap theBitmap = new Bitmap(int_ImageWidth + 6, 38);
Graphics theGraphics = Graphics.FromImage(theBitmap);
theGraphics.Clear(Color.White);
drawLine(theGraphics, theBitmap, newRandom);
theGraphics.DrawRectangle(new Pen(Color.LightGray, 1), 0, 0, theBitmap.Width - 1, theBitmap.Height - 1);
for (int int_index = 0; int_index < str_ValidateCode.Length; int_index++)
{
Matrix X = new Matrix();
X.Shear((float)newRandom.Next(0, 300) / 1000 - 0.25f, (float)newRandom.Next(0, 100) / 1000 - 0.05f);
theGraphics.Transform = X;
string str_char = str_ValidateCode.Substring(int_index, 1);
System.Drawing.Drawing2D.LinearGradientBrush newBrush = new System.Drawing.Drawing2D.LinearGradientBrush(new Rectangle(0, 0, theBitmap.Width, theBitmap.Height), Color.Blue, Color.DarkRed, 1.2f, true);
Point thePos = new Point(int_index * 21 + 1 + newRandom.Next(3), 1 + newRandom.Next(13));
Font theFont = new Font(Fonts[newRandom.Next(Fonts.Length - 1)], newRandom.Next(14, 18), FontStyle.Bold);
theGraphics.DrawString(str_char, theFont, newBrush, thePos);
}
drawPoint(theBitmap, newRandom);
MemoryStream ms = new MemoryStream();
theBitmap.Save(ms, ImageFormat.Png);
var ret = ms.ToArray();
theGraphics.Dispose();
theBitmap.Dispose();
ms.Close();
return ret;
}
private void generateImage()
{
if (!isDirty) return;
// Create a new 32-bit bitmap image.
Bitmap bitmap = new Bitmap(width, height, PixelFormat.Format32bppArgb);
// Create a graphics object for drawing.
using (Graphics g = Graphics.FromImage(bitmap))
{
g.SmoothingMode = SmoothingMode.AntiAlias;
Rectangle rect = new Rectangle(0, 0, width, height);
// Fill in the background.
HatchBrush hatchBrush = new HatchBrush(HatchStyle.SmallConfetti, backgroundDark, backgroundLight);
g.FillRectangle(hatchBrush, rect);
// Set up the text font.
SizeF size;
float fontSize = rect.Height + 1;
Font font;
// Adjust the font size until the text fits within the image.
do
{
fontSize--;
font = new Font(familyName, fontSize, fontStyle);
size = g.MeasureString(text, font);
} while (size.Width > rect.Width);
// Set up the text format.
StringFormat format = new StringFormat();
format.Alignment = StringAlignment.Center;
format.LineAlignment = StringAlignment.Center;
// Create a path using the text and warp it randomly.
GraphicsPath path = new GraphicsPath();
path.AddString(text, font.FontFamily, (int) font.Style, font.Size, rect, format);
Matrix matrix = new Matrix();
matrix.Translate(0F, 0F);
if (System.Environment.OSVersion.Platform != PlatformID.Unix)
{
float v = 4F;
PointF[] points =
{
new PointF(random.Next(rect.Width)/v, random.Next(rect.Height)/v),
new PointF(rect.Width - random.Next(rect.Width)/v, random.Next(rect.Height)/v),
new PointF(random.Next(rect.Width)/v, rect.Height - random.Next(rect.Height)/v),
new PointF(rect.Width - random.Next(rect.Width)/v, rect.Height - random.Next(rect.Height)/v)
};
path.Warp(points, rect, matrix, WarpMode.Perspective, 0F);
}
else
{
float xtr = (rect.Size.Width - size.Width)/2F+size.Width/10F;
float ytr = (rect.Size.Height - size.Height)/2F;
matrix.Rotate((float)random.NextDouble()*10F-5F);
matrix.Shear((float)random.NextDouble()*1F-0.5F,0F);
matrix.Translate(xtr,ytr);
path.Transform(matrix);
}
// Draw the text.
using (hatchBrush = new HatchBrush(HatchStyle.LargeConfetti, foregroundLight, foregroundDark))
{
g.FillPath(hatchBrush, path);
// Add some random noise.
int m = Math.Max(rect.Width, rect.Height);
for (int i = 0; i < (int) (rect.Width*rect.Height/30F); i++)
{
int x = random.Next(rect.Width);
int y = random.Next(rect.Height);
int w = random.Next(m/50);
int h = random.Next(m/50);
g.FillEllipse(hatchBrush, x, y, w, h);
}
}
// Clean up.
font.Dispose();
}
// Set the image.
image = bitmap;
isDirty = false;
}
private void Render(IGraphics ig)
{
string s = cbWhat.Text;
if (s == "Clipping")
{
Pen pn = new Pen(Color.LightGray, 5);
Pen pn2 = new Pen(Color.Yellow);
ig.Clear(Color.Black);
GraphicsContainer cnt = ig.BeginContainer();
ig.SmoothingMode = SmoothingMode.HighQuality;
ig.SetClip(new Rectangle(35,35,120,120));
ig.DrawRectangle(pn, 5,5,45,70);
ig.DrawRectangle(pn, 15,25,90,120);
ig.DrawRectangle(pn, 50,30,100,170);
ig.DrawRectangle(pn, 5,80,180,30);
ig.DrawRectangle(pn, 75,10,40,160);
ig.EndContainer(cnt);
ig.DrawRectangle(pn2, 5,5,45,70);
ig.DrawRectangle(pn2, 15,25,90,120);
ig.DrawRectangle(pn2, 50,30,100,170);
ig.DrawRectangle(pn2, 5,80,180,30);
ig.DrawRectangle(pn2, 75,10,40,160);
}
else if (s == "Transforms")
{
ig.Clear(Color.Black);
ig.RotateTransform(15);
ig.DrawRectangle(new Pen(Color.Red,2), 260,80,50,40);
ig.ResetTransform();
ig.DrawRectangle(new Pen(Color.Red,2), 260,80,50,40);
ig.TranslateTransform(15,-5);
GraphicsContainer cnt = ig.BeginContainer();
ig.SmoothingMode = SmoothingMode.HighQuality;
ig.RotateTransform(5);
ig.FillEllipse(new SolidBrush(Color.Orange), 100,100,80,40);
ig.DrawRectangle(new Pen(Color.Orange,2), 60,80,40,40);
GraphicsContainer cnt2 = ig.BeginContainer();
ig.SmoothingMode = SmoothingMode.None;
ig.RotateTransform(5);
ig.ScaleTransform(1.1f, 1.2f);
ig.FillEllipse(new SolidBrush(Color.YellowGreen), 130,180,80,40);
ig.DrawRectangle(new Pen(Color.YellowGreen,2), 62,80,40,40);
GraphicsContainer cnt3 = ig.BeginContainer();
ig.SmoothingMode = SmoothingMode.HighQuality;
Matrix mm = new Matrix();
mm.Shear(0.3f, 0f);
ig.Transform = mm;
ig.FillEllipse(new SolidBrush(Color.Green), 180,120,80,40);
ig.DrawRectangle(new Pen(Color.Green,2), 62,84,40,40);
ig.EndContainer(cnt3);
ig.EndContainer(cnt2);
ig.FillEllipse(new SolidBrush(Color.Blue), 120,150,80,40);
ig.DrawRectangle(new Pen(Color.Blue,2), 64,80,40,40);
ig.EndContainer(cnt);
ig.FillEllipse(new SolidBrush(Color.Indigo), 80,210,80,40);
ig.DrawRectangle(new Pen(Color.Indigo,2), 66,80,40,40);
ig.DrawRectangle(new Pen(Color.White,2), 270,30,50,40);
ig.ResetTransform();
ig.DrawRectangle(new Pen(Color.White,2), 270,30,50,40);
}
else if (s == "Lines")
{
ig.SmoothingMode = SmoothingMode.AntiAlias;
Pen ow = new Pen(Color.Purple, 12);
ow.EndCap = LineCap.Round;
ow.StartCap = LineCap.Round;
ow.MiterLimit = 6f;
ow.LineJoin = LineJoin.Miter;
ig.SmoothingMode = SmoothingMode.None;
Pen tp = new Pen(Color.Red, 2);
tp.DashStyle = DashStyle.DashDot;
ig.DrawLine(tp, 70,20,190,20);
tp.DashStyle = DashStyle.Dash;
ig.DrawLine(tp, 70,30,190,30);
tp.DashStyle = DashStyle.Custom;
tp.DashPattern = new float[] {1,8,2,2};
ig.DrawLine(tp, 70,40,190,40);
ig.SmoothingMode = SmoothingMode.AntiAlias;
PointF[] pts = new PointF[4];
pts[0] = new PointF(20,50);
pts[1] = new PointF(30,90);
pts[2] = new PointF(65,60);
pts[3] = new PointF(50,40);
ig.DrawLines(ow, pts);
Point[] polly = new Point[]
{
new Point(200, 40),
new Point(220, 140),
new Point(240, 100),
new Point(290, 70),
new Point(230, 10)
};
ig.DrawPolygon(tp, polly);
//arrows
Pen arr = new Pen(Color.DarkGoldenrod, 5);
AdjustableArrowCap aac = new AdjustableArrowCap(5,3, false);
arr.EndCap = LineCap.Custom;
arr.CustomEndCap = aac;
arr.StartCap = LineCap.ArrowAnchor;
ig.DrawLine(arr, 50,120, 150,200);
arr.Width = 7f;
arr.EndCap = LineCap.RoundAnchor;
arr.StartCap = LineCap.SquareAnchor;
ig.DrawLine(arr, 100,120, 200,200);
arr.Width = 9;
arr.EndCap = LineCap.DiamondAnchor;
arr.StartCap = LineCap.ArrowAnchor;
ig.DrawLine(arr, 150,120, 250,200);
Point[] al = new Point[]
{
new Point(200, 100),
new Point(300, 200),
new Point(300, 150)
};
arr.EndCap = LineCap.DiamondAnchor;
arr.StartCap = LineCap.DiamondAnchor;
ig.DrawLines(arr, al);
}
else if (s == "Curves")
{
PointF[] bezzie = new PointF[]
{
new PointF(20, 150),
new PointF(110, 190),
new PointF(120, 200),
new PointF(50, 220),
new PointF(60, 200),
new PointF(140, 180),
new PointF(100, 160),
new PointF(180, 260),
new PointF(200, 210),
new PointF(190, 210)
};
Pen bpn = new Pen(Color.MediumSeaGreen, 2);
bpn.DashStyle = DashStyle.Custom;
bpn.DashPattern = new float[]{6,1,5,2,4,3,3,4,2,5,6,1};
ig.DrawBeziers(bpn, bezzie);
PointF[] curvy = new PointF[]
{
new PointF(130, 40),
new PointF(70, 70),
new PointF(50, 20),
new PointF(120, 120),
new PointF(150, 80),
new PointF(80, 150),
new PointF(80, 110)
};
ig.DrawCurve(new Pen(Color.Blue, 5), curvy);
ig.DrawCurve(new Pen(Color.Red, 2), curvy, 2, 3);
ig.DrawCurve(new Pen(Color.Yellow, 1), curvy, 1f);
Point[] ccurvy = new Point[]
{
new Point(280, 30),
new Point(260, 60),
new Point(200, 20),
new Point(290, 120),
new Point(290, 80),
new Point(230, 150),
new Point(150, 50)
};
ig.DrawClosedCurve(new Pen(Color.Green, 3), ccurvy, 1f, FillMode.Alternate);
ig.DrawClosedCurve(new Pen(Color.Purple, 1), ccurvy, 0f, FillMode.Alternate);
Point[] fcc = new Point[]
{
new Point(160, 350),
new Point(190, 370),
new Point(130, 390),
new Point(190, 400),
new Point(195, 410),
new Point(100, 430),
new Point(160, 450)
};
ig.FillClosedCurve(new SolidBrush(Color.Red), fcc, FillMode.Winding, 1f);
ig.FillClosedCurve(new SolidBrush(Color.Aquamarine), fcc, FillMode.Alternate, .2f);
}
else if (s == "Transparency")
{
Point[] fillpoly = new Point[]
{
new Point(20, 130),
new Point(60, 90),
new Point(30, 20),
new Point(80, 20),
new Point(15, 90),
new Point(100, 50),
new Point(0, 50)
};
Color col = Color.FromArgb(96,255,0,0);
ig.FillEllipse(new SolidBrush(Color.Ivory), 60, 140, 60, 30);
ig.FillPolygon(new SolidBrush(Color.Ivory), fillpoly, FillMode.Winding);
ig.TranslateTransform(10,10);
ig.FillEllipse(new SolidBrush(col), 60, 140, 60, 30);
ig.FillPolygon(new SolidBrush(col), fillpoly, FillMode.Alternate);
ig.ResetTransform();
ig.FillPie(new SolidBrush(Color.FromArgb(100,255,0,0)), 10, 200, 200, 80, 315, 90);
ig.FillPie(new SolidBrush(Color.FromArgb(100,128,128,0)), 10, 200, 200, 80, 250, -90);
ig.FillPie(new SolidBrush(Color.FromArgb(100,128,0,128)), 15, 205, 190, 70, 180, 270);
ig.FillPie(new SolidBrush(Color.FromArgb(100,200,60,60)), 20, 210, 180, 60, 45, -270);
}
else if (s == "Fills")
{
LinearGradientBrush gbr1 = new LinearGradientBrush(new Point(0,0), new Point(30,20), Color.Blue, Color.Plum);
ColorBlend blend = new ColorBlend(3);
blend.Colors = new Color[] {Color.Red, Color.Yellow, Color.MediumSlateBlue};
blend.Positions = new float[] {0, .3f, 1f};
gbr1.InterpolationColors = blend;
Point[] sp = new Point[]
{
new Point(145, 145),
new Point(305, 250),
new Point(220, 250),
new Point(180, 250)
};
ig.FillPolygon(gbr1, sp);
LinearGradientBrush gbr2 = new LinearGradientBrush(new Point(0,0), new Point(10,20), Color.WhiteSmoke, Color.CornflowerBlue);
gbr2.WrapMode = WrapMode.TileFlipXY;
Point[] sp2 = new Point[]
{
new Point(25, 205),
new Point(75, 150),
new Point(110, 110),
new Point(40, 80)
};
ig.FillPolygon(gbr2, sp2);
ig.FillRectangle(new HatchBrush(HatchStyle.DiagonalBrick, Color.Khaki, Color.Peru), 000,5,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.Vertical, Color.Bisque, Color.Peru), 020,5,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.DarkVertical, Color.Tan, Color.Peru), 040,5,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.DiagonalCross, Color.Chocolate, Color.Peru), 060,5,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.WideDownwardDiagonal, Color.BurlyWood, Color.Peru), 080,5,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.LargeConfetti, Color.Wheat, Color.Peru), 100,5,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.ZigZag, Color.SaddleBrown, Color.Peru), 120,5,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.HorizontalBrick, Color.Linen, Color.Peru), 140,5,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.LightHorizontal, Color.Maroon, Color.Peru), 160,5,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.Percent05, Color.CornflowerBlue, Color.LemonChiffon), 000,30,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.Percent10, Color.CornflowerBlue, Color.LemonChiffon), 020,30,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.Percent20, Color.CornflowerBlue, Color.LemonChiffon), 040,30,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.Percent25, Color.CornflowerBlue, Color.LemonChiffon), 060,30,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.Percent30, Color.CornflowerBlue, Color.LemonChiffon), 080,30,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.Percent40, Color.CornflowerBlue, Color.LemonChiffon), 100,30,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.Percent50, Color.CornflowerBlue, Color.LemonChiffon), 120,30,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.Percent60, Color.CornflowerBlue, Color.LemonChiffon), 140,30,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.Percent70, Color.CornflowerBlue, Color.LemonChiffon), 160,30,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.Percent75, Color.CornflowerBlue, Color.LemonChiffon), 180,30,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.Percent80, Color.CornflowerBlue, Color.LemonChiffon), 200,30,20,20);
ig.FillRectangle(new HatchBrush(HatchStyle.Percent90, Color.CornflowerBlue, Color.LemonChiffon), 220,30,20,20);
}
else if (s == "Arcs/Pies")
{
//GDI does not seem to draw arcs correctly except when the ellipse is a circle.
//These arcs demonstrate the problem. SVGGraphics calculates arcs correctly.
ig.DrawArc(new Pen(Color.Black, 2), 120+5*3, 120, 110*3, 110, 0, 240);
ig.DrawArc(new Pen(Color.Black, 2), 120+10*3, 125, 100*3, 100, 0, 210);
ig.DrawArc(new Pen(Color.Black, 2), 120+15*3, 130, 90*3, 90, 0, 180);
ig.DrawArc(new Pen(Color.Black, 2), 120+20*3, 135, 80*3, 80, 0, 150);
ig.DrawArc(new Pen(Color.Black, 2), 120+25*3, 140, 70*3, 70, 0, 120);
ig.DrawArc(new Pen(Color.Black, 2), 120+30*3, 145, 60*3, 60, 0, 90);
ig.DrawArc(new Pen(Color.Black, 2), 120+35*3, 150, 50*3, 50, 0, 60);
ig.DrawArc(new Pen(Color.Black, 2), 120+40*3, 155, 40*3, 40, 0, 270);
ig.DrawPie(new Pen(Color.Pink, 2), 110, 50, 100, 100, 315, 90);
ig.DrawPie(new Pen(Color.Purple, 2), 110, 50, 100, 100, 250, -90);
ig.DrawPie(new Pen(Color.DarkRed, 2), 115, 55, 90, 90, 180, 270);
ig.DrawPie(new Pen(Color.Red, 2), 120, 60, 80, 80, 45, -270);
}
else if (s == "Text")
{
Font fnt1 = new Font("Helvetica", 12, FontStyle.Italic | FontStyle.Bold);
Font fnt2 = new Font(FontFamily.GenericMonospace, 16, FontStyle.Bold);
Font fnt3 = new Font("", 40, FontStyle.Underline);
Rectangle rc1 = new Rectangle(30, 30, 220,20);
StringFormat fmt1= new StringFormat();
fmt1.Alignment = StringAlignment.Near;
ig.DrawRectangle(new Pen(Color.Blue), rc1);
ig.DrawString("Text...1", fnt1, new SolidBrush(Color.DarkGreen), rc1, fmt1);
Rectangle rc2 = new Rectangle(0,0, 120,20);
StringFormat fmt2= new StringFormat();
fmt2.Alignment = StringAlignment.Center;
ig.TranslateTransform(30,160);
ig.RotateTransform(90);
ig.DrawRectangle(new Pen(Color.Blue), rc2);
ig.DrawString("Text...2", fnt2, new SolidBrush(Color.DarkGreen), rc2, fmt2);
ig.ResetTransform();
Rectangle rc3 = new Rectangle(30, 90, 300,30);
StringFormat fmt3= new StringFormat();
fmt3.Alignment = StringAlignment.Far;
ig.DrawRectangle(new Pen(Color.Blue), rc3);
ig.DrawString("Text...3", fnt3, new SolidBrush(Color.DarkGreen), rc3, fmt3);
//measurestring
string mme = "MeasureString Is Impossible To Emulate";
SizeF siz = ig.MeasureString(mme, fnt1);
ig.DrawRectangle(new Pen(Color.Red), 20, 200, siz.Width, siz.Height);
siz = ig.MeasureString(mme, fnt1, 150);
ig.DrawRectangle(new Pen(Color.Orange), 20, 230, siz.Width, siz.Height);
siz = ig.MeasureString(mme, fnt1, new SizeF(150, 150), new StringFormat(StringFormatFlags.DirectionVertical));
ig.DrawRectangle(new Pen(Color.Yellow), 20, 200, siz.Width, siz.Height);
}
else if (s == "Images")
{
Icon ike = new Icon(GetType(), "App.ico");
ig.DrawIcon(ike, 10,10);
//ig.DrawIcon(ike, new Rectangle(270, 400, 30, 40));
Bitmap bmp = new Bitmap(GetType(), "test.bmp");
ig.DrawImage(bmp, 100f, 150f);
GraphicsContainer cnt = ig.BeginContainer();
ig.RotateTransform(5);
ig.DrawImage(bmp, 160f, 50f, 120f, 70f);
ig.EndContainer(cnt);
//ig.DrawImageUnscaled(bmp, 270, 450, 20, 20);
}
else
{
}
}
public MatrixComponents GetMatrixComponents()
{
System.Drawing.Drawing2D.Matrix srcMatrix = new System.Drawing.Drawing2D.Matrix(
this.ScaleX,
this.Rotate0,
this.Rotate1,
this.ScaleY,
this.TranslateX,
this.TranslateY);
System.Drawing.Drawing2D.Matrix m = new System.Drawing.Drawing2D.Matrix(1, 0, 0, 1, 0, 0); // identity
// an 'identity' box
PointF[] modPts = new PointF[]{ new PointF(0,0),
new PointF(1,0),
new PointF(1,1),
new PointF(0,1) };
float sx, sy, rot, shear, tx, ty;
srcMatrix.TransformPoints(modPts);
// translation
tx = srcMatrix.OffsetX;
ty = srcMatrix.OffsetY;
m.Translate(-tx, -ty);
m.TransformPoints(modPts);
m.Reset();
// rotation
rot = (float)Math.Atan2(modPts[1].Y, modPts[1].X); // x axis
rot = (float)(rot / Math.PI * 180);
if (rot == -0) rot = 0;
if (rot == -180) rot = 180;
m.Rotate(-1 * rot);
m.TransformPoints(modPts);
m.Reset();
// scale
//sx = Dist(modPts[0], modPts[3]); // bug it seems..?
sx = Dist(modPts[0], modPts[1]);
sy = Dist(modPts[0], new PointF(0, modPts[3].Y));
if (modPts[0].Y > modPts[3].Y)
{
sy *= -1;
}
m.Scale(1 / sx, 1 / sy);
m.TransformPoints(modPts);
m.Reset();
// skew
// ySkew is impossible at this rotation
shear = modPts[3].X / Dist(modPts[0], modPts[1]);
// rounding
shear = Math.Abs(shear) < 0.001 ? 0 : shear;
m.Shear(-shear, 0);
m.TransformPoints(modPts);
m.Dispose();
srcMatrix.Dispose();
return new MatrixComponents(sx, sy, rot, shear, tx, ty);
}
public void Paint(Graphics g, IPaintContext paintContext, bool bForPreview)
{
//_isStructureInSync = false;
_isMeasureInSync = false; // Change: interpret text every time in order to update plot items and \ID
if (!this._isStructureInSync)
{
// this.Interpret(g);
this.InterpretText();
_isStructureInSync = true;
_isMeasureInSync = false;
}
using (FontCache fontCache = new FontCache())
{
if (!this._isMeasureInSync)
{
// this.MeasureStructure(g, obj);
this.MeasureGlyphs(g, fontCache, paintContext);
MeasureBackground(g, _rootNode.Width, _rootNode.Height);
_isMeasureInSync = true;
}
_cachedSymbolPositions.Clear();
System.Drawing.Drawing2D.GraphicsState gs = g.Save();
g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
var bounds = Bounds;
Matrix transformmatrix = new Matrix();
transformmatrix.Translate((float)_location.AbsolutePivotPositionX, (float)_location.AbsolutePivotPositionY);
transformmatrix.Rotate((float)(-Rotation));
transformmatrix.Shear((float)Shear, 0);
transformmatrix.Scale((float)ScaleX, (float)ScaleY);
transformmatrix.Translate((float)bounds.X, (float)bounds.Y);
if (!bForPreview)
{
TransformGraphics(g);
g.TranslateTransform((float)bounds.X, (float)bounds.Y);
}
// first of all paint the background
PaintBackground(g);
DrawContext dc = new DrawContext();
dc.FontCache = fontCache;
dc.bForPreview = bForPreview;
dc.LinkedObject = Altaxo.Main.AbsoluteDocumentPath.GetRootNodeImplementing<HostLayer>(this);
dc.transformMatrix = transformmatrix;
dc._cachedSymbolPositions = _cachedSymbolPositions;
DrawGlyphs(g, dc, _cachedTextOffset.X, _cachedTextOffset.Y);
g.Restore(gs);
}
}
/**
You can use this matrix as follows:
1 - Create new object with identity matrix (empty constructor)
2 - Apply a set of transformations that you want to this matrix
3 - Transform the four corners of the original image to calculate
4 - The min X and min Y of the transformed image
5 - The width & height of the new image buffer
6 - Translate this matrix by (- min X, - min Y)
7 - Invert the matrix
8 - Use the inverted version to reverse transform all new locations in the new image buffer
**/
public BufferedImage perform_concat_matrices_operations(BufferedImage _src_img, TextBox _console, float _shear_x = (float)0, float _shear_y = (float)0, float _scale_x = (float)1, float _scale_y = (float)1, float _rotate_theta = (float)0)
{
BufferedImage ret;
// 1 - Create new object with identity matrix (empty constructor)
Matrix transformations_matrix = new Matrix();
// 2 - Apply a set of transformations that you want to this matrix
transformations_matrix.Rotate(_rotate_theta);
transformations_matrix.Scale(_scale_x, _scale_y);
transformations_matrix.Shear(_shear_x, _shear_y);
// 3 - Transform the four corners of the original image to calculate
/**
* To get the size of the new (destination) image,
* apply the forward mapping to the four corners of the original image
* ([0,0], [W-1,0], [0,H-1], [W-1,H-1])
* to get their new locations.
* Then use these new four locations to get the width and height of the destination image
* (e.g. to get new width:
* find min X & max X of the four new points and subtract them,
* do the same for Y to get the new height)
*/
Point[] corner_points = {
new Point(0, 0),
new Point(_src_img.width - 1, 0),
new Point(0, _src_img.height - 1),
new Point(_src_img.width - 1, _src_img.height - 1)
};
transformations_matrix.TransformPoints(corner_points);
int min_x = find_min_x(corner_points);
int min_y = find_min_y(corner_points);
int max_x = find_max_x(corner_points);
int max_y = find_max_y(corner_points);
int new_width = max_x - min_x;
int new_height = max_y - min_y;
_console.Text += "Min X = ";
_console.Text += min_x;
_console.Text += Environment.NewLine;
_console.Text += "Min Y = ";
_console.Text += min_y;
_console.Text += Environment.NewLine;
_console.Text += "Max X = ";
_console.Text += max_x;
_console.Text += Environment.NewLine;
_console.Text += "Max Y = ";
_console.Text += max_y;
_console.Text += Environment.NewLine;
_console.Text += "New Width = ";
_console.Text += new_width;
_console.Text += Environment.NewLine;
_console.Text += "New Height = ";
_console.Text += new_height;
_console.Text += Environment.NewLine;
// 4 - The min X and min Y of the transformed image
/**
* To make the transformed image totally fit inside the buffer, a translation with (- min X, - min Y) should be appended to the original transformation matrix (W) before inverting it.
*/
// 6 - Translate this matrix by (- min X, - min Y)
transformations_matrix.Translate(-min_x, -min_y);
// 7 - Invert the matrix
transformations_matrix.Invert();
// 8 - Use the inverted version to reverse transform all new locations in the new image buffer
ret = apply_transformation_matrix_to_bitmap_or_buffer(transformations_matrix, _src_img, new_width, new_height, _console);
return ret;
}
/// <summary>
/// Create cache
/// </summary>
/// <param name="rectBound">The bound rectangle</param>
/// <param name="bevelRate">Bevel rate</param>
/// <param name="segmentWidth">Width of the segment</param>
/// <param name="segmentInterval">Interval between segments</param>
private void CreateCache(Rectangle rectBound, float bevelRate, float segmentWidth, float segmentInterval)
{
Matrix mx = new Matrix(1, 0, 0, 1, 0, 0);
mx.Shear(-0.1f, 0);
PointF[] pathPointCollection = new PointF[6];
PointF[] pathDotCollection = new PointF[4];
for(int i = 0; i < 8; ++i)
{
if(m_CachedPaths[i] == null)
m_CachedPaths[i] = new GraphicsPath();
}
// top '-'
pathPointCollection[0].X = segmentWidth * bevelRate + segmentInterval;
pathPointCollection[0].Y = segmentWidth * bevelRate;
pathPointCollection[1].X = segmentInterval + segmentWidth * bevelRate * 2;
pathPointCollection[1].Y = 0;
pathPointCollection[2].X = rectBound.Width - segmentInterval - segmentWidth * bevelRate * 2;
pathPointCollection[2].Y = 0;
pathPointCollection[3].X = rectBound.Width - segmentInterval - segmentWidth * bevelRate;
pathPointCollection[3].Y = segmentWidth * bevelRate;
pathPointCollection[4].X = rectBound.Width - segmentInterval - segmentWidth;
pathPointCollection[4].Y = segmentWidth;
pathPointCollection[5].X = segmentWidth + segmentInterval;
pathPointCollection[5].Y = segmentWidth;
m_CachedPaths[0].AddPolygon(pathPointCollection);
m_CachedPaths[0].CloseFigure();
if (UseItalicStyle) m_CachedPaths[0].Transform(mx);
// upper right '|'
pathPointCollection[0].X = rectBound.Width - segmentWidth;
pathPointCollection[0].Y = segmentWidth + segmentInterval;
pathPointCollection[1].X = rectBound.Width - segmentWidth * bevelRate;
pathPointCollection[1].Y = segmentWidth * bevelRate + segmentInterval;
pathPointCollection[2].X = rectBound.Width + 1;
pathPointCollection[2].Y = segmentWidth * bevelRate * 2 + segmentInterval + 1;
pathPointCollection[3].X = rectBound.Width + 1;
pathPointCollection[3].Y = (rectBound.Height >> 1) - segmentWidth * 0.5f - segmentInterval - 1;
pathPointCollection[4].X = rectBound.Width - segmentWidth * 0.5f;
pathPointCollection[4].Y = (rectBound.Height >> 1) - segmentInterval;
pathPointCollection[5].X = rectBound.Width - segmentWidth;
pathPointCollection[5].Y = (rectBound.Height >> 1) - segmentWidth * 0.5f - segmentInterval;
m_CachedPaths[1].AddPolygon(pathPointCollection);
m_CachedPaths[1].CloseFigure();
if (UseItalicStyle) m_CachedPaths[1].Transform(mx);
// bottom right '|'
pathPointCollection[0].X = rectBound.Width - segmentWidth;
pathPointCollection[0].Y = (rectBound.Height >> 1) + segmentInterval + segmentWidth * 0.5f;
pathPointCollection[1].X = rectBound.Width - segmentWidth * 0.5f;
pathPointCollection[1].Y = (rectBound.Height >> 1) + segmentInterval;
pathPointCollection[2].X = rectBound.Width + 1;
pathPointCollection[2].Y = (rectBound.Height >> 1) + segmentInterval + segmentWidth * 0.5f + 1;
pathPointCollection[3].X = rectBound.Width + 1;
pathPointCollection[3].Y = rectBound.Height - segmentInterval - segmentWidth * bevelRate * 2 - 1;
pathPointCollection[4].X = rectBound.Width - segmentWidth * bevelRate;
pathPointCollection[4].Y = rectBound.Height - segmentWidth * bevelRate - segmentInterval;
pathPointCollection[5].X = rectBound.Width - segmentWidth;
pathPointCollection[5].Y = rectBound.Height - segmentWidth - segmentInterval;
m_CachedPaths[2].AddPolygon(pathPointCollection);
m_CachedPaths[2].CloseFigure();
if (UseItalicStyle) m_CachedPaths[2].Transform(mx);
// bottom '-'
pathPointCollection[0].X = segmentWidth * bevelRate + segmentInterval;
pathPointCollection[0].Y = rectBound.Height - segmentWidth * bevelRate;
pathPointCollection[1].X = segmentWidth + segmentInterval;
pathPointCollection[1].Y = rectBound.Height - segmentWidth;
pathPointCollection[2].X = rectBound.Width - segmentInterval - segmentWidth;
pathPointCollection[2].Y = rectBound.Height - segmentWidth;
pathPointCollection[3].X = rectBound.Width - segmentInterval - segmentWidth * bevelRate;
pathPointCollection[3].Y = rectBound.Height - segmentWidth * bevelRate;
pathPointCollection[4].X = rectBound.Width - segmentInterval - segmentWidth * bevelRate * 2;
pathPointCollection[4].Y = rectBound.Height;
pathPointCollection[5].X = segmentWidth * bevelRate * 2 + segmentInterval;
pathPointCollection[5].Y = rectBound.Height;
m_CachedPaths[3].AddPolygon(pathPointCollection);
m_CachedPaths[3].CloseFigure();
if (UseItalicStyle) m_CachedPaths[3].Transform(mx);
// bottom left '|'
pathPointCollection[0].X = 0f;
pathPointCollection[0].Y = (rectBound.Height >> 1) + segmentInterval + segmentWidth * 0.5f;
pathPointCollection[1].X = segmentWidth * 0.5f;
pathPointCollection[1].Y = (rectBound.Height >> 1) + segmentInterval;
pathPointCollection[2].X = segmentWidth;
pathPointCollection[2].Y = (rectBound.Height >> 1) + segmentInterval + segmentWidth * 0.5f;
pathPointCollection[3].X = segmentWidth;
pathPointCollection[3].Y = rectBound.Height - segmentWidth - segmentInterval;
pathPointCollection[4].X = segmentWidth * bevelRate;
pathPointCollection[4].Y = rectBound.Height - segmentWidth * bevelRate - segmentInterval;
pathPointCollection[5].X = 0f;
pathPointCollection[5].Y = rectBound.Height - segmentInterval - segmentWidth * bevelRate * 2;
m_CachedPaths[4].AddPolygon(pathPointCollection);
m_CachedPaths[4].CloseFigure();
if (UseItalicStyle) m_CachedPaths[4].Transform(mx);
// upper left '|'
pathPointCollection[0].X = 0f;
pathPointCollection[0].Y = segmentWidth * bevelRate * 2 + segmentInterval;
pathPointCollection[1].X = segmentWidth * bevelRate;
pathPointCollection[1].Y = segmentWidth * bevelRate + segmentInterval;
pathPointCollection[2].X = segmentWidth;
pathPointCollection[2].Y = segmentWidth + segmentInterval;
pathPointCollection[3].X = segmentWidth;
pathPointCollection[3].Y = (rectBound.Height >> 1) - segmentWidth * 0.5f - segmentInterval;
pathPointCollection[4].X = segmentWidth * 0.5f;
pathPointCollection[4].Y = (rectBound.Height >> 1) - segmentInterval;
pathPointCollection[5].X = 0f;
pathPointCollection[5].Y = (rectBound.Height >> 1) - segmentWidth * 0.5f - segmentInterval;
m_CachedPaths[5].AddPolygon(pathPointCollection);
m_CachedPaths[5].CloseFigure();
if (UseItalicStyle) m_CachedPaths[5].Transform(mx);
// draw med '-'
pathPointCollection[0].X = (segmentWidth * 0.5f) + segmentInterval;
pathPointCollection[0].Y = (rectBound.Height >> 1);
pathPointCollection[1].X = segmentWidth + segmentInterval;
pathPointCollection[1].Y = (rectBound.Height >> 1) - segmentWidth * 0.5f;
pathPointCollection[2].X = rectBound.Width - segmentInterval - segmentWidth;
pathPointCollection[2].Y = (rectBound.Height >> 1) - segmentWidth * 0.5f;
pathPointCollection[3].X = rectBound.Width - segmentInterval - segmentWidth * 0.5f;
pathPointCollection[3].Y = rectBound.Height >> 1;
pathPointCollection[4].X = rectBound.Width - segmentInterval - segmentWidth;
pathPointCollection[4].Y = (rectBound.Height >> 1) + segmentWidth * 0.5f;
pathPointCollection[5].X = segmentWidth + segmentInterval;
pathPointCollection[5].Y = (rectBound.Height >> 1) + segmentWidth * 0.5f;
m_CachedPaths[6].AddPolygon(pathPointCollection);
m_CachedPaths[6].CloseFigure();
if (UseItalicStyle) m_CachedPaths[6].Transform(mx);
// draw dot
pathDotCollection[0].X = 0f;
pathDotCollection[0].Y = rectBound.Height;
pathDotCollection[1].X = segmentWidth;
pathDotCollection[1].Y = rectBound.Height;
pathDotCollection[2].X = segmentWidth;
pathDotCollection[2].Y = rectBound.Height - segmentWidth;
pathDotCollection[3].X = 0;
pathDotCollection[3].Y = rectBound.Height - segmentWidth;
m_CachedPaths[7].AddPolygon(pathDotCollection);
m_CachedPaths[7].CloseFigure();
if (UseItalicStyle) m_CachedPaths[7].Transform(mx);
// ok change state
m_bIsCacheBuild = true;
}
/// <summary>
/// 扭曲图片校正
/// </summary>
public Bitmap ReSetBitMap()
{
Graphics g = Graphics.FromImage(bmpobj);
Matrix X = new Matrix();
// X.Rotate(30);
X.Shear((float)0.16666666667, 0); // 2/12
g.Transform = X;
// Draw image
//Rectangle cloneRect = GetPicValidByValue(128); //Get Valid Pic Rectangle
Rectangle cloneRect = new Rectangle(0, 0, bmpobj.Width, bmpobj.Height);
Bitmap tmpBmp = bmpobj.Clone(cloneRect, bmpobj.PixelFormat);
g.DrawImage(tmpBmp,
new Rectangle(0, 0, bmpobj.Width, bmpobj.Height),
0, 0, tmpBmp.Width,
tmpBmp.Height,
GraphicsUnit.Pixel);
return tmpBmp;
}
public MatrixComponents GetMatrixComponents()
{
System.Drawing.Drawing2D.Matrix srcMatrix = new System.Drawing.Drawing2D.Matrix(
this.ScaleX,
this.Rotate0,
this.Rotate1,
this.ScaleY,
this.TranslateX,
this.TranslateY);
System.Drawing.Drawing2D.Matrix m = new System.Drawing.Drawing2D.Matrix(1, 0, 0, 1, 0, 0); // identity
// an 'identity' box
PointF[] modPts = new PointF[] { new PointF(0, 0),
new PointF(1, 0),
new PointF(1, 1),
new PointF(0, 1) };
float sx, sy, rot, shear, tx, ty;
srcMatrix.TransformPoints(modPts);
// translation
tx = srcMatrix.OffsetX;
ty = srcMatrix.OffsetY;
m.Translate(-tx, -ty);
m.TransformPoints(modPts);
m.Reset();
// rotation
rot = (float)Math.Atan2(modPts[1].Y, modPts[1].X); // x axis
rot = (float)(rot / Math.PI * 180);
if (rot == -0)
{
rot = 0;
}
if (rot == -180)
{
rot = 180;
}
m.Rotate(-1 * rot);
m.TransformPoints(modPts);
m.Reset();
// scale
//sx = Dist(modPts[0], modPts[3]); // bug it seems..?
sx = Dist(modPts[0], modPts[1]);
sy = Dist(modPts[0], new PointF(0, modPts[3].Y));
if (modPts[0].Y > modPts[3].Y)
{
sy *= -1;
}
m.Scale(1 / sx, 1 / sy);
m.TransformPoints(modPts);
m.Reset();
// skew
// ySkew is impossible at this rotation
shear = modPts[3].X / Dist(modPts[0], modPts[1]);
// rounding
shear = Math.Abs(shear) < 0.001 ? 0 : shear;
m.Shear(-shear, 0);
m.TransformPoints(modPts);
m.Dispose();
srcMatrix.Dispose();
return(new MatrixComponents(sx, sy, rot, shear, tx, ty));
}
//
// GET: /Admin/DataCaptcha/
public ActionResult Show()
{
var randomText = GenerateRandomText(6);
var hash = ComputeMd5Hash(randomText + GetSalt());
Session["CaptchaHash"] = hash;
var rnd = new Random();
var fonts = new[] { "Narkisim,Arial" };
float orientationAngle = rnd.Next(0, 359);
float y = 0;
Brush brush = new SolidBrush(Color.FromArgb(255, 56, 62, 167));
Brush brush1 = new SolidBrush(Color.White);
Font font;
font = new Font("Terminal", 16);
const int height = 40;
const int width = 100;
var index0 = rnd.Next(0, fonts.Length);
var familyName = fonts[index0];
using (var bmpOut = new Bitmap(width, height))
{
var g = Graphics.FromImage(bmpOut);
/* if (set == 1)
{
var gradientBrush = new LinearGradientBrush(new Rectangle(0, 0, width, height),
Color.FromArgb(238, 240, 241, 240), Color.FromArgb(238, 240, 241, 240)
, orientationAngle);
g.FillRectangle(gradientBrush, 0, 0, width, height);
}
*/
var gradientBrush = new LinearGradientBrush(new Rectangle(0, 0, width, height),
Color.White, Color.White
, orientationAngle);
g.FillRectangle(gradientBrush, 0, 0, width, height);
//DrawRandomLines(ref g, width, height);
float x = 0;
//g.SmoothingMode = SmoothingMode.AntiAlias;
// g.TextRenderingHint = TextRenderingHint.AntiAlias;
font = new Font("Constantia,Tahoma", 30, FontStyle.Italic | FontStyle.Bold, GraphicsUnit.World);
//g.DrawString(randomText, font, brush, x,-10);
var rec = new Rectangle(-30, 4, width, height);
var path = new GraphicsPath();
path.AddString(randomText, font.FontFamily, (int)FontStyle.Italic | (int)FontStyle.Bold, 30, new Point (-5, 10), StringFormat.GenericTypographic);
// Determine physical size of the character when rendered
var area = Rectangle.Round(path.GetBounds());
// Slide it to be centered in the specified bounds
var offset = new Point(rec.Left + (rec.Width / 2 - area.Width / 2) - area.Left, rec.Top + (rec.Height / 2 - area.Height / 2) - area.Top);
var translate = new Matrix();
translate.Translate(offset.X, offset.Y);
translate.Rotate(-10, MatrixOrder.Append);
translate.Shear(1, 0, MatrixOrder.Append);
path.Transform(translate);
// Now render it however desired
g.SmoothingMode = SmoothingMode.AntiAlias;
g.TextRenderingHint = TextRenderingHint.AntiAlias;
g.FillPath(SystemBrushes.ControlText, path);
for (var i = 0; i < width; i += 2)
{
for (var j = 0; j < height; j += 2)
{
var offset1 = Math.Abs(height / 2 - j);
if (i + offset1 < width)
{
var pixel = bmpOut.GetPixel(i + offset1, j);
bmpOut.SetPixel(i, j, pixel);
}
}
}
var ms = new MemoryStream();
bmpOut.Save(ms, ImageFormat.Png);
var bmpBytes = ms.GetBuffer();
bmpOut.Dispose();
ms.Close();
return new FileContentResult(bmpBytes, "image/png");
}
}