正在阅读：用于.NET Compact Framework的强大二维图形引擎用于.NET Compact Framework的强大二维图形引擎

using Pen = XrossOne.Drawing.PenX;
using LinearGradientBrush = XrossOne.Drawing. LinearGradientBrushX;
using Matrix = XrossOne.Drawing.MatrixX;

图 1. 反锯齿矢量图形绘图

//Clear the background and reset the transform state
gx.Clear(Color.White);
gx.ResetTransform();
//Draw skew grid as the background
PenX pen = new PenX(Utils.FromArgb(0x40, Color.LightGray), 5);
for (int i = -Height; i < Width + Height; i+=20)
{
gx.DrawLine(pen, i, 0, i + Height, Height);
gx.DrawLine(pen, i, 0, i - Height, Height);
}

//Draw a DarkMagenta rectangle with a 10.5-pixel pen
Color c = Utils.FromArgb(0x80, Color.DarkMagenta);
pen = new PenX(c, 10.5f);
gx.DrawRectangle(pen, 50, 20, 150, 200);

//Fill a GreenYellow rectangle
c = Utils.FromArgb(0xA0, Color.GreenYellow);
BrushX brush = new SolidBrushX(c);
gx.FillRectangle(brush, 120, 50, 90, 150);

//Draw a BlueViolet ellipse with a 10.5-pixel pen
c = Utils.FromArgb(0x80, Color.BlueViolet);
pen = new PenX(c, 10.5f);
gx.DrawEllipse(pen, 50, 20, 150, 80);

//Fill a Red ellipse
c = Utils.FromArgb(0xA0, Color.Red);
brush = new SolidBrushX(c);
gx.FillEllipse(brush, 20, 50, 80, 150);

//Draw a HotPink pie from 156.5 degree to -280.9 degree
pen.Color = Utils.FromArgb(0xA0, Color.HotPink);
gx.DrawPie(pen, 3.6f, 120.3f, 200.8f, 130.1f, 156.5f, -280.9f);

//Draw Orange Bezier curves
c = Utils.FromArgb(0xA0, Color.Orange);
pen = new PenX(c, 16);
Point start = new Point(70, 100);
Point control1 = new Point(100, 10);
Point control2 = new Point(150, 50);
Point end1 = new Point(200, 200);
Point control3 = new Point(100, 150);
Point control4 = new Point(50, 200);
Point end2 = new Point(10, 150);
Point[] bezierPoints ={start, control1, control2, end1, control3, control4, end2};
pen.EndCap = LineCapX.Round;
gx.DrawBeziers(pen, bezierPoints);

//Refresh
Invalidate();

图 2. DrawCurve/DrawClosedCurve 的输出

图 3. 线帽/联接装饰

//Clear the background and reset the transform state
gx.Clear(Color.White);
gx.ResetTransform();

//Draw a pentacle with Miter line join and Round line cap
PenX pen = new PenX(Color.Orange, 15);
Point p1 = new Point(150, 80);
Point p2 = new Point(100, 230);
Point p3 = new Point(240, 150);
Point p4 = new Point(60, 150);
Point p5 = new Point(200, 230);
Point[] points ={p1,p2,p3,p4,p5};
MatrixX m = new MatrixX();
m.Translate(-26, -70);
m.TransformPoints(points);
pen.LineJoin = LineJoinX.Miter;
pen.EndCap = LineCapX.Round;
pen.StartCap = LineCapX.Round;
gx.DrawLines(pen, points);

//Draw a pentacle with Bevel line join and Triangle line cap
pen = new PenX(Utils.FromArgb(0x80, Color.Blue), 15);
Point[] points2 ={p1,p2,p3,p4,p5};
m = new MatrixX();
m.Translate(-10, -30);
m.TransformPoints(points2);
pen.LineJoin = LineJoinX.Bevel;
pen.StartCap = LineCapX.Triangle;
gx.DrawLines(pen, points2);

//Draw a pentacle with Round line join and Round line cap
pen = new PenX(Utils.FromArgb(0x80, Color.BlueViolet), 20);
Point[] points3 ={p1,p2,p3,p4,p5};
m = new MatrixX();
m.Translate(-40, 20);
m.TransformPoints(points3);
pen.LineJoin = LineJoinX.Round;
pen.EndCap = LineCapX.Round;
gx.DrawLines(pen, points3);

//Refresh
Invalidate();

图 4. 二维变换

//Clear the background and reset the transform state
gx.Clear(Color.White);
gx.ResetTransform();

//Draw a rectangle and apply scale transform to it
Color c = Utils.FromArgb(0x80, Color.Orange);
PenX pen = new PenX(c, 7.5f);
pen.LineJoin = LineJoinX.Miter;
gx.DrawRectangle(pen, 10, 10, 50, 50);
gx.ScaleTransform(3, 3);
gx.DrawRectangle(pen, 10, 10, 50, 50);

//Draw a series of ellipses and rotate 10 degrees between the preceding and the successor
c = Utils.FromArgb(0x80, Color.BlueViolet);
pen = new PenX(c, 5.5f);
gx.ScaleTransform(0.25F, 0.25F);
gx.RotateTransform(-40);
for (int j = 0; j < 10; j ++)
{
gx.RotateTransform(10);
gx.DrawEllipse(pen, 100, 50, 50, 130);
}

//Draw a series of triangles and apply translate transform to them
pen = new PenX(Utils.FromArgb(0x80, Color.Blue), 10);
Point p1 = new Point(120, 80);
Point p2 = new Point(100, 200);
Point p3 = new Point(140, 200);
Point[] points ={p1,p2,p3};
gx.Transform = new MatrixX();
pen.LineJoin = LineJoinX.Round;
for (int i = 0; i <= 40; i +=10)
{
gx.TranslateTransform(20, 10);
gx.DrawPolygon(pen, points);
}

//Refresh
Invalidate();

图 5. 渐变填充

//Clear the background and reset the transform state
gx.Clear(Color.White);
gx.ResetTransform();

//Fill a rectangle with a black-white LinearGradientBrushX
Rectangle r = new Rectangle(20, 50, 300, 100);
Color c1 = Color.Black;
Color c2 = Color.White;
BrushX brush1 = new LinearGradientBrushX(r, c1, c2, 30F);
gx.FillRectangle(brush1, r);

//Fill a rectangle with a 7-color LinearGradientBrushX
r = new Rectangle(90, 100, 150, 100);
LinearGradientBrushX br = new LinearGradientBrushX(r,Color.Black,Color.Black, 60F);
ColorBlendX cb = new ColorBlendX();
cb.Positions=new float[7];
int i=0;
for(float f=0;f<=1;f+=1.0f/6)
cb.Positions[i++]=f;
cb.Colors=new Color[]
{Color.Red,Color.Orange,Color.Yellow,Color.Green,Color.Blue,Color.Indigo,Color.Violet};
br.InterpolationColors=cb;
gx.TranslateTransform(160, 10);
gx.RotateTransform(60F);
gx.FillRectangle(br, r);

//Fill a rectangle with a 7-color RadialGradientBrushX
r.Y += 50;
RadialGradientBrushX brush2 = new RadialGradientBrushX(r, Color.Black,Color.Black, 220F);
brush2.InterpolationColors = cb;
gx.RotateTransform(-45F);
gx.TranslateTransform(-200, -170);
gx.FillRectangle(brush2, r);

//Refresh
Invalidate();