// применяет к многограннику матричное преобразование
static public Polyhedron ChangePolyhedronByMatrix(Polyhedron polyhedron, Matrix matrix)
{
List <Point3D> newPoints = polyhedron.Vertices.Select(point => (Matrix.getMatrixFromPoint(point) * matrix).ToPoint()).ToList();
Polyhedron res = new Polyhedron(newPoints);
foreach (var edge in polyhedron.Edges)
{
int p1Index = polyhedron.Vertices.FindIndex(point => point == edge.From);
int p2Index = polyhedron.Vertices.FindIndex(point => point == edge.To);
res.AddEdge(newPoints[p1Index], newPoints[p2Index]);
}
return(res);
}
private void loadButton_Click(object sender, EventArgs e)
{
OpenFileDialog dialog = new OpenFileDialog();
dialog.CheckFileExists = true;
dialog.CheckPathExists = true;
dialog.Filter = "Текстовый файл|*.txt";
dialog.DefaultExt = "txt";
dialog.InitialDirectory = Directory.GetCurrentDirectory().Replace("bin\\Debug", "");
if (dialog.ShowDialog() == DialogResult.OK)
{
string fname = dialog.FileName;
Polyhedron polyhedron = new Polyhedron();
try //обратотка возможных ошибок
{
foreach (var line in File.ReadAllLines(fname))
{
if (line.Split(' ').Length == 3) //это точка
{
var coords = line.Split(' ').Select(s => double.Parse(s)).ToArray();
polyhedron.AddVertex(coords[0], coords[1], coords[2]);
}
else //это ребро
{
var vertexNumbers = line.Split(' ').Select(s => int.Parse(s)).ToArray();
polyhedron.AddEdge(polyhedron.Vertices[vertexNumbers[0]], polyhedron.Vertices[vertexNumbers[1]]);
}
}
currentPolyhedron = polyhedron;
drawFigure();
MessageBox.Show("Файл загружен!", "", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch
{
MessageBox.Show("Ошибка чтения файла!", "", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
public static Polyhedron getTetrahedron()
{
double x = 200, y = 150, z = 0;
int r = 150;
double bz = z - r * Math.Sqrt(6) / 3.0;
List <Point3D> points = new List <Point3D>
{
new Point3D(x, y, z),
new Point3D(x - r * Math.Sqrt(3) / 6.0, y - r / 2.0, bz),
new Point3D(x - r * Math.Sqrt(3) / 6.0, y + r / 2.0, bz),
new Point3D(x + r * Math.Sqrt(3) / 3.0, y, bz),
};
Polyhedron tetrahedron = new Polyhedron(points);
tetrahedron.AddEdges(points[0], new List <Point3D> {
points[1], points[2], points[3]
});
tetrahedron.AddEdges(points[1], new List <Point3D> {
points[2], points[3]
});
tetrahedron.AddEdge(points[2], points[3]);
return(tetrahedron);
}