public static double CalcDist(Point3D m, Point3D n)
{
return Math.Sqrt(
(m.X - n.X) * (m.X - n.X) +
(m.Y - n.Y) * (m.Y - n.Y) +
(m.Z - n.Z) * (m.Z - n.Z));
}
public void makeRectangle(Point3D origin)
{
this.origin = origin;
double neg = -20;
double pov = 20;
double near = 100;
double far = 140;
path = new Point3D[]
{
new Point3D(neg, near, pov),
new Point3D(neg + 20, far, pov + 20),
new Point3D(neg + 20, far, -pov + 20),
new Point3D(neg + 20, near, -pov + 20),
new Point3D(neg, near, -pov),
new Point3D(neg, near, pov),
new Point3D(pov, near, pov),
new Point3D(pov, near, neg),
new Point3D(neg, near, neg),
new Point3D(neg, near, pov),
new Point3D(pov, near, pov),
new Point3D(pov + 20, far, pov + 20),
new Point3D(pov + 20, far, -pov + 20),
new Point3D(pov + 20, far, pov + 20),
new Point3D(neg + 20, far, pov + 20),
new Point3D(neg + 20, far, neg + 20),
new Point3D(pov + 20, far, neg + 20),
new Point3D(pov + 20, far, -pov + 20),
new Point3D(pov, near, -pov),
};
}
public static double DistanceBetweenPoints(Point3D firstPoint, Point3D secondPoint)
{
double deltaX = firstPoint.XPos - secondPoint.XPos;
double deltaY = firstPoint.YPos - secondPoint.YPos;
double deltaZ = firstPoint.ZPos - secondPoint.ZPos;
return Math.Sqrt(deltaX*deltaX + deltaY*deltaY + deltaZ*deltaZ);
}
public static Path GetPathFromFile(string filePath)
{
StreamReader sr = new StreamReader(filePath);
using (sr)
{
Point3D currentPoint = new Point3D();
while (!sr.EndOfStream)
{
string currentLine = sr.ReadLine();
int value = int.Parse(currentLine.Substring(2));
if (currentLine[0] == 'x')
{
currentPoint = new Point3D();
currentPoint.XPos = value;
}
else if (currentLine[0] == 'y')
{
currentPoint.YPos = value;
}
else if (currentLine[0] == 'z')
{
currentPoint.ZPos = value;
path.AddPoint(currentPoint);
}
}
}
return path;
}
public void PathTestSimpleTest()
{
Point3D a = new Point3D(1, 1, 1);
Point3D b = new Point3D(2, 2, 2);
somePath.AddPoint(a);
somePath.AddPoint(b);
Assert.IsTrue(somePath.GetPath()[0].Equals(a));
Assert.IsTrue(somePath.GetPath()[1].Equals(b));
}
public Point3D CrossProduct(Point3D p1, Point3D p2)
{
Point3D p3;
p3 = new Point3D(0, 0, 0);
p3.x = p1.y * p2.z - p1.z * p2.y;
p3.y = p1.z * p2.x - p1.x * p2.z;
p3.z = p1.x * p2.y - p1.y * p2.x;
return p3;
}
public void Normalise(Point3D v)
{
double length;
length = Math.Sqrt(v.x * v.x + v.y * v.y + v.z * v.z);
v.x /= length;
v.y /= length;
v.z /= length;
}
public void Point3DCreation()
{
Point3D somePoint = new Point3D();
somePoint.XPos = 4;
somePoint.YPos = 5;
somePoint.ZPos = 6;
Assert.IsTrue(somePoint.XPos == 4);
Assert.IsTrue(somePoint.YPos == 5);
Assert.IsTrue(somePoint.ZPos == 6);
}
public Point3D cross(Point3D p2)
{
Point3D p1 = this.normalize();
Point3D p3;
p3 = new Point3D(0, 0, 0);
p3.x = p1.y * p2.z - p1.z * p2.y;
p3.y = p1.z * p2.x - p1.x * p2.z;
p3.z = p1.x * p2.y - p1.y * p2.x;
return p3;
}
public bool EqualVertex(Point3D p1, Point3D p2)
{
if (Math.Abs(p1.x - p2.x) > EPSILON)
return (false);
if (Math.Abs(p1.y - p2.y) > EPSILON)
return (false);
if (Math.Abs(p1.z - p2.z) > EPSILON)
return (false);
return (true);
}
// x is up/down, z is left/right
public void rotateCamera(double rotx, double rotz, double roty)
{
double radrotx = Math.PI * rotx / 180;
double radrotz = -Math.PI * rotz / 180;
double radroty = Math.PI * roty / 180;
double cosx = Math.Cos(radrotx);
double sinx = Math.Sin(radrotx);
double cosz = Math.Cos(radrotz);
double sinz = Math.Sin(radrotz);
double cosy = Math.Cos(radroty);
double siny = Math.Cos(radroty);
facing = facing - pos;
axes[0] -= pos;
axes[1] -= pos;
axes[2] -= pos;
if (rotx != 0)
{
facing = new Point3D(facing.x, facing.y * cosx + facing.z * sinx, facing.y * -1 * sinx + facing.z * cosx); // x
//orient = new Point3D(orient.x, orient.y * cosx + orient.z * sinx, orient.y * -1 * sinx + orient.z * cosx); // x
axes[1] = new Point3D(axes[1].x, axes[1].y * cosx + axes[1].z * sinx, axes[1].y * -1 * sinx + axes[1].z * cosx); // x
axes[2] = new Point3D(axes[2].x, axes[2].y * cosx + axes[2].z * sinx, axes[2].y * -1 * sinx + axes[2].z * cosx); // x
}
if (rotz != 0)
{
facing = new Point3D(facing.x * cosz + facing.y * -1 * sinz, facing.x * sinz + facing.y * cosz, facing.z); // z
axes[0] = new Point3D(axes[0].x * cosz + axes[0].y * -1 * sinz, axes[0].x * sinz + axes[0].y * cosz, axes[0].z); // z
axes[1] = new Point3D(axes[1].x * cosz + axes[1].y * -1 * sinz, axes[1].x * sinz + axes[1].y * cosz, axes[1].z); // z
}
if (roty != 0)
{
axes[0] = new Point3D(axes[0].x * cosy + axes[0].z * -1 * siny, axes[0].y, axes[0].x * siny + axes[0].z * cosy); // y
axes[2] = new Point3D(axes[2].x * cosy + axes[2].z * -1 * siny, axes[2].y, axes[2].x * siny + axes[2].z * cosy); // y
}
facing = facing + pos;
axes[0].normalize();
axes[1].normalize();
axes[2].normalize();
axes[0] += pos;
axes[1] += pos;
axes[2] += pos;
/*
orient = orient - pos;
orient = new Point3D(orient.x, orient.y * cosx + orient.z * sinx, orient.y * -1 * sinx + orient.z * cosx);
orient = new Point3D(orient.x * cosz + orient.y * -1 * sinz, orient.x * sinz + orient.y * cosz, orient.z);
orient = orient + pos;
*/
}
public double zoom; // distance from camera to plane
#endregion Fields
#region Constructors
public CAMERA()
{
pos = new Point3D(0, 0, 0);
facing = new Point3D(0, 1, 0);
up = new Point3D(0, 0, 1);
axes = new Point3D[]
{
new Point3D(1,0,0),
new Point3D(0,1,0),
new Point3D(0,0,1),
};
angleh = 45.0;
anglev = 45.0;
zoom = 1.0;
front = 1.0;
back = 1000.0; // viewing range
projection = 0;
}
public projection(CAMERA camera)
{
EPSILON = 0.001;
DTOR = 0.01745329252;
this.camera = camera;
screen = new SCREEN();
origin = new Point3D();
basisa = new Point3D();
viewVec = new Point3D();
basisc = new Point3D();
p1 = new Point2D();
p2 = new Point2D();
e1 = new Point3D();
e2 = new Point3D();
n1 = new Point3D();
n2 = new Point3D();
if (Trans_Initialise() != true)
{
//MessageBox.Show("Error in initializing variable");
}
}
static void Main()
{
Point3D m = Point3D.StartPoint;
Point3D n = new Point3D(1, 3, 5);
Point3D p = new Point3D(2, 4, 6);
Console.WriteLine("Distance: {0:f2}", Distance.CalcDist(n, p));
Path path = new Path();
path.AddPoint(m);
path.AddPoint(n);
path.AddPoint(p);
Console.WriteLine(path);
PathStorage.Save(path, "Path.txt");
Console.WriteLine(PathStorage.Load("Path.txt"));
//Console.WriteLine(PathStorage.Load("noPath.txt"));
var myMatrix = new Matrix<int>(2, 3);
Console.WriteLine(string.Join("; ", myMatrix));
myMatrix[0, 0] = 10;
var newMatrix = new Matrix<int>(4, 2);
newMatrix[1, 0] = 7;
newMatrix = myMatrix * newMatrix;
//Type type = typeof(Matrix<>);
//object[] allAttributes =
// type.GetCustomAttributes(true);
//foreach (VersionAttribute attr in allAttributes)
//{
// Console.WriteLine("This class is version {0}.{1} ", type.attr.major, attr.minor);
//}
}
public void AddPoint(Point3D point)
{
pathPoints.Add(point);
}
public Figure3D(Point3D origin, Point3D[] path)
{
this.origin = origin;
this.path = path;
}
public void Trans_World2Eye(Point3D w, Point3D e)
{
/* Translate world so that the camera is at the origin */
w.x -= camera.pos.x;
w.y -= camera.pos.y;
w.z -= camera.pos.z;
/* Convert to eye coordinates using basis vectors */
e.x = w.x * basisa.x + w.y * basisa.y + w.z * basisa.z;
e.y = w.x * viewVec.x + w.y * viewVec.y + w.z * viewVec.z;
e.z = w.x * basisc.x + w.y * basisc.y + w.z * basisc.z;
}
public void Trans_Norm2Screen(Point3D norm, Point2D projected)
{
//MessageBox.Show("the value of are");
projected.h = Convert.ToInt32(screen.center.h - screen.size.h * norm.x / 2);
projected.v = Convert.ToInt32(screen.center.v - screen.size.v * norm.z / 2);
}
//public bool Trans_Point();
public bool Trans_Line(Point3D w1, Point3D w2)
{
Trans_World2Eye(w1, e1);
Trans_World2Eye(w2, e2);
if (Trans_ClipEye(e1, e2))
{
Trans_Eye2Norm(e1, n1);
Trans_Eye2Norm(e2, n2);
if (Trans_ClipNorm(n1, n2))
{
Trans_Norm2Screen(n1, p1);
Trans_Norm2Screen(n2, p2);
return (true);
}
}
return (true);
}
public bool Trans_Initialise()
{
/* Is the camera position and view vector coincident ? */
if (EqualVertex(camera.axes[1], camera.pos))
{
return (false);
}
/* Is there a legal camera up vector ? */
if (EqualVertex(camera.up, origin))
{
return (false);
}
viewVec.x = camera.axes[1].x - camera.pos.x;// view direction
viewVec.y = camera.axes[1].y - camera.pos.y;
viewVec.z = camera.axes[1].z - camera.pos.z;
Normalise(viewVec);
basisa = CrossProduct(camera.up, viewVec);
Normalise(basisa);
/* Are the up vector and view direction colinear */
if (EqualVertex(basisa, origin))
{
return (false);
}
basisc = CrossProduct(viewVec, basisa);
/* Do we have legal camera apertures ? */
if (camera.angleh < EPSILON || camera.anglev < EPSILON)
{
return (false);
}
/* Calculate camera aperture statics, note: angles in degrees */
tanthetah = Math.Tan(camera.angleh * DTOR / 2);
tanthetav = Math.Tan(camera.anglev * DTOR / 2);
/* Do we have a legal camera zoom ? */
if (camera.zoom < EPSILON)
{
return (false);
}
/* Are the clipping planes legal ? */
if (camera.front < 0 || camera.back < 0 || camera.back <= camera.front)
{
return (false);
}
return true;
}
public void Trans_Eye2Norm(Point3D e, Point3D n)
{
double d;
if (camera.projection == 0)
{
d = camera.zoom / e.y;
n.x = d * e.x / tanthetah;
n.y = e.y;
n.z = d * e.z / tanthetav;
}
else
{
n.x = camera.zoom * e.x / tanthetah;
n.y = e.y;
n.z = camera.zoom * e.z / tanthetav;
}
}
static void Main()
{
Point3D firstPoint = new Point3D(0, 1, 2);
Console.WriteLine(firstPoint);
Console.WriteLine(Point3D.StartingPoint);
}
public bool Trans_ClipEye(Point3D e1, Point3D e2)
{
double mu;
/* Is the vector totally in front of the front cutting plane ? */
if (e1.y <= camera.front && e2.y <= camera.front)
{
return (false);
}
/* Is the vector totally behind the back cutting plane ? */
if (e1.y >= camera.back && e2.y >= camera.back)
{
return (false);
}
/* Is the vector partly in front of the front cutting plane ? */
if ((e1.y < camera.front && e2.y > camera.front) ||
(e1.y > camera.front && e2.y < camera.front))
{
mu = (camera.front - e1.y) / (e2.y - e1.y);
if (e1.y < camera.front)
{
e1.x = e1.x + mu * (e2.x - e1.x);
e1.z = e1.z + mu * (e2.z - e1.z);
e1.y = camera.front;
}
else
{
e2.x = e1.x + mu * (e2.x - e1.x);
e2.z = e1.z + mu * (e2.z - e1.z);
e2.y = camera.front;
}
}
/* Is the vector partly behind the back cutting plane ? */
if ((e1.y < camera.back && e2.y > camera.back) ||
(e1.y > camera.back && e2.y < camera.back))
{
mu = (camera.back - e1.y) / (e2.y - e1.y);
if (e1.y < camera.back)
{
e2.x = e1.x + mu * (e2.x - e1.x);
e2.z = e1.z + mu * (e2.z - e1.z);
e2.y = camera.back;
}
else
{
e1.x = e1.x + mu * (e2.x - e1.x);
e1.z = e1.z + mu * (e2.z - e1.z);
e1.y = camera.back;
}
}
return (true);
}
public Figure3D(Point3D origin)
{
this.origin = origin;
this.makeRectangle(origin);
}
public Point3D(Point3D p)
{
x = p.x;
y = p.y;
z = p.z;
}
public bool Trans_ClipNorm(Point3D n1, Point3D n2)
{
double mu;
/* Is the line segment totally right of x = 1 ? */
if (n1.x >= 1 && n2.x >= 1)
return (false);
/* Is the line segment totally left of x = -1 ? */
if (n1.x <= -1 && n2.x <= -1)
return (false);
/* Does the vector cross x = 1 ? */
if ((n1.x > 1 && n2.x < 1) || (n1.x < 1 && n2.x > 1))
{
mu = (1 - n1.x) / (n2.x - n1.x);
if (n1.x < 1)
{
n2.z = n1.z + mu * (n2.z - n1.z);
n2.x = 1;
}
else
{
n1.z = n1.z + mu * (n2.z - n1.z);
n1.x = 1;
}
}
/* Does the vector cross x = -1 ? */
if ((n1.x < -1 && n2.x > -1) || (n1.x > -1 && n2.x < -1))
{
mu = (-1 - n1.x) / (n2.x - n1.x);
if (n1.x > -1)
{
n2.z = n1.z + mu * (n2.z - n1.z);
n2.x = -1;
}
else
{
n1.z = n1.z + mu * (n2.z - n1.z);
n1.x = -1;
}
}
/* Is the line segment totally above z = 1 ? */
if (n1.z >= 1 && n2.z >= 1)
return (false);
/* Is the line segment totally below z = -1 ? */
if (n1.z <= -1 && n2.z <= -1)
return (false);
/* Does the vector cross z = 1 ? */
if ((n1.z > 1 && n2.z < 1) || (n1.z < 1 && n2.z > 1))
{
mu = (1 - n1.z) / (n2.z - n1.z);
if (n1.z < 1)
{
n2.x = n1.x + mu * (n2.x - n1.x);
n2.z = 1;
}
else
{
n1.x = n1.x + mu * (n2.x - n1.x);
n1.z = 1;
}
}
/* Does the vector cross z = -1 ? */
if ((n1.z < -1 && n2.z > -1) || (n1.z > -1 && n2.z < -1))
{
mu = (-1 - n1.z) / (n2.z - n1.z);
if (n1.z > -1)
{
n2.x = n1.x + mu * (n2.x - n1.x);
n2.z = -1;
}
else
{
n1.x = n1.x + mu * (n2.x - n1.x);
n1.z = -1;
}
}
return (true);
}
public void AddPoint(Point3D p)
{
this.points.Add(p);
}
static Point3D()
{
Point3D.startingPoint = new Point3D(0, 0, 0);
}
