Lecture 10. Drawing figures C# презентация

40, 40, 210,150);
It's possible to use RectangleF class object. There are four float type numbers. They denoted an disposition and size of rectangle: coordinates of left upper corner and right bottom corner, height and width of rectangle that is used for placing ellipse.
Recall that RectangleF defines a rectangle float.
RectangleF rect1=new RectangleF(10,10,70,110); g. DrawEllipse(pen1, rect1);

of start and of finish of line.
g.DrawLine(pen,100,100,200,200);
You may use Point class objects.
Point – integer type;
PointF- real type (float);
Example:
Point p1, p2;             p1=new Point(300,50);             p2=new Point(400,200);             g.DrawLine(pen1, p1, p2);

close to four preset points.
DrawBezier(pen, p1,p2,p3,p4);
Example:
double[ ] q=new double[100];           Point[ ] w=new Point [100];             for(int i=0;ig.DrawBezier(pen,w[10],w[41],w[72],w[93]);

] f= new PointF[6];             f[0].X=10;f[0].Y=100;             f[1].X=50; f[1].Y=150;             f[2].X=100;f[2].Y=240;             f[3].X=150; f[3].Y=130;             f[4].X=200;f[4].Y=50;             f[5].X=300; f[5].Y=10;
g.DrawCurve(pen, f );

);
4) DrawPoligon(pen, array_of_points);-creates a polygon by linking the points by direct lines. Point [ ] p= new Point[3]; p[0].X=110; p[0].Y=110; p[1].X=230; p[1].Y=130; p[2].X=290; p[2].Y=190; g.DrawPolygon(pen2, p );

Width,
int Start_Angle, int End_Angle);- the arc is a part of ellipse that is placed in rectangle with preset Height and Width.
Start_Angle, End_Angle- these are start angle and finish angle in degree;
g.DrawArc(pen, 200, 200, 100, 100, 10, 160);
6) Pie.
It differs from an arc because in this case arc's ends are connected with center by radiuses.
DrawPie(pen, rect, StartAngle, EndAngle);
rect - this is an object of Rectangle or RectangleF classes. It's possible merely to preset the coordinates, height and width of rectangle.
g.DrawPie(pen2,100,100,350,350,0,280);

ellipse inside of rectangle. In the ellipse draw an arc. Besides of must be drawn the second rectangle and any text must be placed inside that.