////////////////DRAW_METHODS///////////////////
///////////////////////////////////////////////
/////////////INSIDE_BELONGS_METHODS////////////
public bool isPointInside(GlPointR2 P)
{
float SP = 0;
for (int i = 0; i < this.CountOfPoints - 1; i++)
{
SP += new GlTriangle(P, this.vertexes[i], this.vertexes[i + 1]).S;
}
SP += new GlTriangle(P, this.vertexes[this.CountOfPoints - 1], this.vertexes[0]).S;
return(Math.Abs(SP - S) < FAULT);
}
///////////////////////////////////////////////
////////////////////FIELDS/////////////////////
///////////////////////////////////////////////
/*********************************************/
///////////////////////////////////////////////
/////////////////CONSTRUCTORS//////////////////
///////////////////////////////////////////////
public GlPolygon(GlPointR2 Center, params GlPointR2[] POLY)
{
S = 0;
if (POLY == null || Center == null)
{
polyCenter = new GlPointR2(float.NaN, float.NaN);
vertexes = new GlPointR2[0];
return;
}
if (POLY.Length > 3)
{
GlPointR2 P = new GlPointR2((POLY[0].X + POLY[POLY.Length / 2].X) / 2, (POLY[0].Y + POLY[POLY.Length / 2].Y) / 2);
for (int i = 0; i < POLY.Length - 1; i++)
{
S += new GlTriangle(P, POLY[i], POLY[i + 1]).S;
}
S += new GlTriangle(P, POLY[POLY.Length - 1], POLY[0]).S;
}
this.polyCenter = Center;
this.vertexes = new GlPointR2[POLY.Length];
Array.Copy(POLY, this.vertexes, this.vertexes.Length);
if (this.vertexes.Length == 0)
{
return;
}
for (int i = 0; i < this.vertexes.Length - 1; i++)
{
P += new GlVectorR2(this.vertexes[i + 1].X - this.vertexes[i].X, this.vertexes[i + 1].Y - this.vertexes[i].Y).Length;
}
P += new GlVectorR2(this.vertexes[0].X - this.vertexes[this.vertexes.Length - 1].X, this.vertexes[0].Y - this.vertexes[this.vertexes.Length - 1].Y).Length;
}
public GlTriangle(GlTriangle copyTiangle) :
this(copyTiangle == null ? new GlPointR2(float.NaN, float.NaN) : copyTiangle[0],
copyTiangle == null ? new GlPointR2(float.NaN, float.NaN) : copyTiangle[1],
copyTiangle == null ? new GlPointR2(float.NaN, float.NaN) : copyTiangle[2])
{
}