public override IPoint GetPoint(double t)
{
IPoint p = new Point();
double x = (1 - t) * a.GetX() + t * b.GetX();
double y = (1 - t) * a.GetY() + t * b.GetY();
p.SetX(x);
p.SetY(y);
return(p);
}
public override IPoint GetPoint(double t)
{
IPoint p = new Point();
double x = 0, y = 0;
x = Math.Pow((1 - t), 3) * a.GetX() + 3 * t * Math.Pow((1 - t), 2) * b.GetX() + 3 * Math.Pow(t, 2) * (1 - t) * c.GetX() + Math.Pow(t, 3) * d.GetX();
y = Math.Pow((1 - t), 3) * a.GetY() + 3 * t * Math.Pow((1 - t), 2) * b.GetY() + 3 * Math.Pow(t, 2) * (1 - t) * c.GetY() + Math.Pow(t, 3) * d.GetY();
p.SetX(x);
p.SetY(y);
return(p);
}
private void button1_Click(object sender, EventArgs e)
{
//---draw Line
IPoint start = new Geometry.Point();
start.SetX(50);
start.SetY(350);
IPoint startForFragment = new Geometry.Point();
startForFragment.SetX(50);
startForFragment.SetY(320);
IPoint finish = new Geometry.Point();
finish.SetX(300);
finish.SetY(100);
IPoint finishForFragment = new Geometry.Point();
finishForFragment.SetX(300);
finishForFragment.SetY(80);
ICurve curveL = new Line(start, finish);
ICurve curveLforFr = new Line(startForFragment, finishForFragment);
//Fragment fr = new Fragment(1, 0, curveLforFr);
Fragment fr = new Fragment(1, 0.5, curveLforFr);
VisualCurve vCurveL = new VisualCurve(curveL);
VisualCurve vCurveLforFr = new VisualCurve(fr);
//---draw Line in Form
Drawer drawer = new Drawer(gr, (Brush)Brushes.Blue);
//vCurveL.Draw(drawer);
//---print to Console values
Writer writer = new Writer();
vCurveL.Draw(writer);
//---draw shadow by decorator
Drawer shadowDrawer = new Drawer(gr, (Brush)Brushes.Gray);
DecoratorShadow decoratorShadowL = new Visual.DecoratorShadow(vCurveL, shadowDrawer);
decoratorShadowL.Draw(drawer);
DecoratorShadow decoratorShadowLforFr = new Visual.DecoratorShadow(vCurveLforFr, shadowDrawer);
decoratorShadowLforFr.Draw(drawer);
//-----------------
//---draw Bezier
IPoint a = new Geometry.Point();
a.SetX(150);
a.SetY(400);
IPoint b = new Geometry.Point();
b.SetX(450);
b.SetY(150);
IPoint c = new Geometry.Point();
c.SetX(100);
c.SetY(50);
IPoint d = new Geometry.Point();
d.SetX(350);
d.SetY(400);
ICurve curveB = new Bezier(a, b, c, d);
VisualCurve vCurveB = new VisualCurve(curveB);
//vCurveB.Draw(drawer);
//---print to Console values
vCurveB.Draw(writer);
//---draw shadow by decorator
DecoratorShadow decoratorShadowB = new Visual.DecoratorShadow(vCurveB, shadowDrawer);
decoratorShadowB.Draw(drawer);
//-----------------
}