public void SideSelection(_Point p)
{
string[] sideSelection = new string[6];
int i = 0;
foreach (Cube myCube in Model)
{
foreach (Polygon p1 in myCube.faces)
{
//if (p1 != selected)
p1.IsPointed = false;
}
}
List <Polygon> SelectedSides = new List <Polygon>();
i = 0;
foreach (Cube myCube in Model)
{
foreach (Polygon p1 in myCube.faces)
{
Edge[] polygon = p1.ePolygon(AnT.Height * 1.0);
if (PointInPolygon(polygon, p) == 1)
{
SelectedSides.Add(p1);
p1.IsPointed = true;
i++;
}
}
}
k = i;
//textBox1.Text = i.ToString();
double z = 0;
double min = 1;
Polygon selected = new Polygon();
foreach (Polygon p1 in SelectedSides)
{
Polygon temp = p1.Depth(out z);
if (z < min)
{
selected = temp;
min = z;
}
}
foreach (Cube myCube in Model)
{
foreach (Polygon p1 in myCube.faces)
{
if (p1 != selected)
{
p1.IsPointed = false;
}
}
}
selected.IsPointed = true;
selectedSide = selected;
}
public void EdgeSelection(_Point p)
{
foreach (Cube myCube in Model)
{
foreach (CubeEdge p1 in myCube.edges)
{
// if (p1 != selected)
p1.IsPointed = false;
}
}
foreach (Cube myCube in Model)
{
foreach (CubeEdge p1 in myCube.edges)
{
Edge[] polygon = p1.eCubeEdge(AnT.Height * 1.0);
/*txtMouseX.Text = polygon[0].end.x.ToString();
* txtMouseY.Text = p.x.ToString();
*
* txtMouseZ.Text = polygon[0].end.y.ToString();
* textBox1.Text = p.y.ToString();*/
if ((Math.Abs(polygon[0].end.x - p.x) <= 2) && (Math.Abs(polygon[0].end.y - p.y) <= 2))
{
p1.IsPointed = true;
selectedEdge_ = p1;
//MessageBox.Show("yahoo!!");
return;
}
}
}
}
public string Classify(_Point p0, _Point p1)
{
_Point p2 = new _Point(this.x, this.y);
_Point a = p1 - p0;
_Point b = p2 - p0;
double sa = a.x * b.y - b.x * a.y;
if (sa > 0)
{
return("LEFT");
}
if (sa < 0)
{
return("RIGHT");
}
if ((a.x * b.x < 0) || (a.y * b.y < 0))
{
return("BEHIND");
}
if (a.Length() < b.Length())
{
return("BEYOND");
}
if ((p2.x == p0.x) && (p2.y == p0.y))
{
return("BEGIN");
}
if ((p2.x == p1.x) && (p2.y == p1.y))
{
return("END");
}
return("BETWEEN");
}
public Edge[] eCubeEdge(double controlHeight)
{
Edge[] epolyg = new Edge[3];
for (int i = 0; i < epolyg.Length; i++)
{
epolyg[i] = new Edge();
}
double xCoord = 0, yCoord = 0, zCoord = 0;
Glu.gluProject(middle.x, middle.y, middle.z, GetModelview(), GetProjection(), GetViewport(), out xCoord, out yCoord, out zCoord);
_Point p1 = new _Point(Math.Round(xCoord, 0), controlHeight - Math.Round(yCoord, 0));
Glu.gluProject(begin.x, begin.y, begin.z, GetModelview(), GetProjection(), GetViewport(), out xCoord, out yCoord, out zCoord);
_Point p0 = new _Point(Math.Round(xCoord, 0), controlHeight - Math.Round(yCoord, 0));
epolyg[0] = new Edge(p0, p1);
Glu.gluProject(end.x, end.y, end.z, GetModelview(), GetProjection(), GetViewport(), out xCoord, out yCoord, out zCoord);
p1 = new _Point(Math.Round(xCoord, 0), controlHeight - Math.Round(yCoord, 0));
Glu.gluProject(middle.x, middle.y, middle.z, GetModelview(), GetProjection(), GetViewport(), out xCoord, out yCoord, out zCoord);
p0 = new _Point(Math.Round(xCoord, 0), controlHeight - Math.Round(yCoord, 0));
epolyg[1] = new Edge(p0, p1);
Glu.gluProject(end.x, end.y, end.z, GetModelview(), GetProjection(), GetViewport(), out xCoord, out yCoord, out zCoord);
p1 = new _Point(Math.Round(xCoord, 0), controlHeight - Math.Round(yCoord, 0));
Glu.gluProject(begin.x, begin.y, begin.z, GetModelview(), GetProjection(), GetViewport(), out xCoord, out yCoord, out zCoord);
p0 = new _Point(Math.Round(xCoord, 0), controlHeight - Math.Round(yCoord, 0));
epolyg[2] = new Edge(p0, p1);
return(epolyg);
}
public bool EdgeHasPoint(_Point a, _Point begin, _Point end)
{
double p = (a.x - end.x) / (begin.x - end.x);
if ((((p * begin.y + (1 - p) * end.y)) == a.y) && (p >= 0) && (p <= 1))
{
return(true);
}
else
{
return(false);
}
}
bool cursorInside(_Point p)
{
foreach (Cube myCube in Model)
{
foreach (Polygon p1 in myCube.faces)
{
Edge[] polygon = p1.ePolygon(AnT.Height * 1.0);
if (PointInPolygon(polygon, p) == 1)
{
return(true);
}
}
}
return(false);
}
public Edge[] ePolygon(double controlHeight)
{
Edge[] epolyg = new Edge[vertices.Length - 1];
for (int i = 0; i < epolyg.Length; i++)
{
epolyg[i] = new Edge();
}
double xCoord = 0, yCoord = 0, zCoord = 0;
for (int i = 0; i < epolyg.Length; i++)
{
Glu.gluProject(vertices[i + 1].x, vertices[i + 1].y, vertices[i + 1].z, GetModelview(), GetProjection(), GetViewport(), out xCoord, out yCoord, out zCoord);
_Point p1 = new _Point(Math.Round(xCoord, 0), controlHeight - Math.Round(yCoord, 0));
Glu.gluProject(vertices[i].x, vertices[i].y, vertices[i].z, GetModelview(), GetProjection(), GetViewport(), out xCoord, out yCoord, out zCoord);
_Point p0 = new _Point(Math.Round(xCoord, 0), controlHeight - Math.Round(yCoord, 0));
epolyg[i] = new Edge(p0, p1);
}
return(epolyg);
}
double ScaleCoeff(_Point p)
{
double xScale;
if (cursorInside(p))
{
xScale = 1 - Math.Abs(mouseEndXScale - mouseStartXScale) / 100;
}
else
{
xScale = 1 + Math.Abs(mouseEndXScale - mouseStartXScale) / 100;
}
//txtMouseX.Text = xScale.ToString();
//txtMouseY.Text = mouseStartXScale.ToString();
//txtMouseZ.Text = mouseEndXScale.ToString();
if (xScale < 0)
{
return(0.3);
}
return(xScale);
}
public int PointInPolygon(Edge[] polygon, _Point p)
{
int parity = 0;
for (int i = 0; i < polygon.Length; i++)
{
switch (EdgeType(p, polygon[i]))
{
case "TOUCHING":
case "CROSSING":
parity++;
break;
}
}
if ((parity % 2) == 0)
{
return(0);
}
else
{
return(1);
}
}
public string EdgeType(_Point a, Edge e)
{
_Point v = e.begin;
_Point w = e.end;
switch (a.Classify(e))
{
case "LEFT":
if ((v.y < a.y) && (a.y <= w.y))
{
return("CROSSING");
}
else
{
return("INESSENTIAL");
}
case "RIGHT":
if ((w.y < a.y) && (a.y <= v.y))
{
return("CROSSING");
}
else
{
return("INESSENTIAL");
}
case "BETWEEN":
case "BEGIN":
case "END":
return("TOUCHING");
default:
return("INESSENTIAL");
}
}
public Edge(_Point p0, _Point p1)
{
begin = p0; end = p1;
}
