public static double CalculateDistance(Point3D firstPoint, Point3D secondPoint)
{
double deltaX = secondPoint.X - firstPoint.X;
double deltaY = secondPoint.Y - firstPoint.Y;
double deltaZ = secondPoint.Z - firstPoint.Z;
double distance = (double)Math.Sqrt(deltaX * deltaX + deltaY * deltaY + deltaZ * deltaZ);
return distance;
}
public LRBuilder(Point3D[] vertices, Triangle[] triangles)
{
IFLTriangleMesh iflTriangleMesh = new IFLTriangleMesh();
iflTriangleMesh.V = vertices;
iflTriangleMesh.Triangles = triangles;
IConverter<CTTriangleMesh> iflToCt = Converter.Converter.GetSpecificConverter<IFLTriangleMesh, CTTriangleMesh>(iflTriangleMesh);
DateTime startTime = DateTime.Now;
this.ctTriangleMesh = iflToCt.Convert();
DateTime endTime = DateTime.Now;
TimeSpan span = endTime.Subtract(startTime);
Init();
}
public static List<Point3D> ReadFromFile()
{
string path = @"..\..\Points.txt";
List<Point3D> output = new List<Point3D>();
using (StreamReader reader = new StreamReader(path))
{
while (!reader.EndOfStream)
{
var coordinates = reader.ReadLine()
.Trim()
.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)
.ToArray();
Point3D pointToAdd = new Point3D(double.Parse(coordinates[0]), double.Parse(coordinates[1]), double.Parse(coordinates[2]));
output.Add(pointToAdd);
}
}
Console.WriteLine("The file is readed!");
return output;
}
/// <summary>
/// Loads the input file.
/// I property values remain unchanged since the last run, then the file is not reloaded, unless the Realod property is set to true.
/// </summary>
public IFLTriangleMesh Execute(string fn)
{
// first pass determines the number of vertices and the number of triangles
StreamReader sr;
try
{
sr = new StreamReader(fn);
}
catch (FileNotFoundException fnfe)
{
throw new Exception(fnfe.Message);
}
int triangleCount = 0;
int vertexCount = 0;
int lineCount = 0;
int textureCoordinateCount = 0;
string line = sr.ReadLine();
bool normalsFound = false;
while (line != null)
{
line = line.Trim();
if (line.StartsWith("v ")) vertexCount++;
if (line.StartsWith("vt ")) textureCoordinateCount++;
if (line.StartsWith("vn ")) normalsFound = true;
if ((line.StartsWith("f ")) || (line.StartsWith("fo ")) || line.StartsWith("f\t"))
{
triangleCount++;
if (line.Split(new char[] { ' ', '\t' }).Length == 5)
triangleCount++;
}
line = sr.ReadLine();
lineCount++;
}
sr.Close();
// second pass performs the actual parsing
sr = new StreamReader(fn);
Point3D[] vertices = new Point3D[vertexCount];
Triangle[] triangles = new Triangle[triangleCount];
int vi = 0;
int ti = 0;
int ni = 0;
int tci = 0;
Point3D point;
Triangle triangle, textureTriangle;
NumberFormatInfo nfi = new NumberFormatInfo();
nfi.NumberDecimalSeparator = ".";
nfi.NumberGroupSeparator = ",";
int linePos = 0;
line = sr.ReadLine();
while (line != null)
{
line = line.Trim();
//parsing of a vertex
if (line.StartsWith("v "))
{
string[] coords = line.Split(new char[] { ' ' }, 4, StringSplitOptions.RemoveEmptyEntries);
double c1 = double.Parse(coords[1], nfi);
double c2 = double.Parse(coords[2], nfi);
double c3 = double.Parse(coords[3], nfi);
point = new Point3D { X = c1, Y = c2, Z = c3 };
vertices[vi] = point;
vi++;
}
// parsing of a triangle
if ((line.StartsWith("f ")) || (line.StartsWith("fo ")) || (line.StartsWith("f\t")))
{
string[] indices = line.Split(new char[] { ' ', '\t' }, 5, StringSplitOptions.RemoveEmptyEntries);
int t1 = 0;
int t2 = 0;
int t3 = 0;
string[] parts = indices[1].Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
int v1 = int.Parse(parts[0]) - 1;
if (parts.Length > 1)
t1 = int.Parse(parts[1]) - 1;
parts = indices[2].Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
int v2 = int.Parse(parts[0]) - 1;
if (parts.Length > 1)
t2 = int.Parse(parts[1]) - 1;
parts = indices[3].Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
int v3 = int.Parse(parts[0]) - 1;
if (parts.Length > 1)
t3 = int.Parse(parts[1]) - 1;
if (flipNormals)
{
triangle = new Triangle { Vertex1 = v1, Vertex2 = v3, Vertex3 = v2 };
textureTriangle = new Triangle { Vertex1 = t1, Vertex2 = t3, Vertex3 = t2 };
}
else
{
triangle = new Triangle { Vertex1 = v1, Vertex2 = v2, Vertex3 = v3 };
textureTriangle = new Triangle { Vertex1 = t1, Vertex2 = t2, Vertex3 = t3 };
}
if (indices.Length == 4)
{
triangles[ti] = triangle;
ti++;
}
if (indices.Length == 5)
{
parts = indices[4].Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
v2 = int.Parse(parts[0]) - 1;
if (parts.Length > 1)
t2 = int.Parse(parts[1]) - 1;
if (flipNormals)
{
triangle = new Triangle { Vertex1 = v1, Vertex2 = v3, Vertex3 = v2 };
textureTriangle = new Triangle { Vertex1 = t1, Vertex2 = t2, Vertex3 = t3 };
}
else
{
triangle = new Triangle { Vertex1 = v1, Vertex2 = v3, Vertex3 = v2 };
textureTriangle = new Triangle { Vertex1 = t1, Vertex2 = t2, Vertex3 = t3 };
}
triangles[ti] = triangle;
ti++;
}
}
line = sr.ReadLine();
linePos++;
}
// creating an output Mesh instance
output = new IFLTriangleMesh();
output.V = vertices;
output.Triangles = triangles;
return (output);
}
/// <summary>
/// This is called when the game should draw itself.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Draw(GameTime gameTime)
{
GraphicsDevice.Clear(Color.DarkGray);
c = new Color(15, 15, 15);
checkInput();
spriteBatch.Begin();
spriteBatch.DrawString(font, "N - Next corner, P - Previous corner, O - Opposite corner, S - Next corner around vertex", new Vector2(10, 10), Color.Black);
spriteBatch.DrawString(font, "F - Next ring vertex, B - Previous ring vertex", new Vector2(10, 30), Color.Black);
spriteBatch.End();
// reset what spritebatch has changed
GraphicsDevice.BlendState = BlendState.Opaque;
GraphicsDevice.DepthStencilState = DepthStencilState.Default;
GraphicsDevice.SamplerStates[0] = SamplerState.LinearWrap;
GraphicsDevice.RasterizerState = RasterizerState.CullNone;
EffectPass pass = effect.CurrentTechnique.Passes[0];
pass.Apply();
foreach (Triangle t in lrTriangleMesh.T)
{
drawTriangle(t, lrTriangleMesh.V, GraphicsDevice, Color.Red);
}
int mr = lrTriangleMesh.MR;
for (int i = 0; i < mr; i++)
{
Point3D[] p = new Point3D[3];
//Left triangle
p[0] = lrTriangleMesh.V[i];
p[1] = lrTriangleMesh.V[lrTriangleMesh.VN(i)];
p[2] = lrTriangleMesh.V[lrTriangleMesh.VL(i)];
drawTriangle(p, GraphicsDevice, Color.Brown);
drawLine(p, 1, 2, GraphicsDevice, Color.Black);
drawLine(p, 2, 0, GraphicsDevice, Color.Black);
//Right triangle
p[2] = lrTriangleMesh.V[lrTriangleMesh.VR(i)];
drawTriangle(p, GraphicsDevice, Color.Lavender);
drawLine(p, GraphicsDevice);
drawLine(p, 1, 2, GraphicsDevice, Color.Black);
drawLine(p, 2, 0, GraphicsDevice, Color.Black);
}
currentCube.Draw(GraphicsDevice);
base.Draw(gameTime);
}
private void drawTriangle(Point3D[] p, GraphicsDevice d, Color c)
{
VertexPositionColor[] tri = {new VertexPositionColor(Vector3Extension.CreateV3FromP3(p[0]), c),
new VertexPositionColor(Vector3Extension.CreateV3FromP3(p[1]), c),
new VertexPositionColor(Vector3Extension.CreateV3FromP3(p[2]), c)};
d.DrawUserPrimitives<VertexPositionColor>(PrimitiveType.TriangleList, tri, 0, 1);
}
private void drawTriangle(Point3D[] p, GraphicsDevice d)
{
drawTriangle(p, d, nextColor());
}
private void drawTriangle(Triangle t, Point3D[] points, GraphicsDevice d)
{
drawTriangle(t, points, d, nextColor());
}
private void drawLine(Point3D[] p, GraphicsDevice d, Color c)
{
VertexPositionColor[] li = {new VertexPositionColor(Vector3Extension.CreateV3FromP3(p[0]), c),
new VertexPositionColor(Vector3Extension.CreateV3FromP3(p[1]), c)};
d.DrawUserPrimitives<VertexPositionColor>(PrimitiveType.LineStrip, li, 0, 1);
}
private void drawLine(Point3D[] p, GraphicsDevice d)
{
drawLine(p, d, Color.Red);
}
