//Начало рисования фигуры
private void canvas1_MouseDown(object sender, MouseEventArgs e)
{
shape = ShapeCreator.CreateShape(currentShape);
shape.Pen = new Pen(this.btnStrokeColor.BackColor, float.Parse(cmbThickness.Text));
shape.Brush = cbIsTransparent.Checked ? new SolidBrush(Color.Transparent) : new SolidBrush(btnFillColor.BackColor);
shape.StartDraw(e.Location, this.canvas1);
}
public void startGraphics(Graphics g)
{
graphicEngine = new GraphicEngine(g);
graphicEngine.StartDraw();
}