public static RegularPolygon CreateRegularPolygon(Drawing drawing, IList <IFigure> dependencies)
{
var result = new RegularPolygon()
{
Drawing = drawing, Dependencies = dependencies
};
return(result);
}
public static RegularPolygon CreateRegularPolygon(Drawing drawing, IList<IFigure> dependencies)
{
var result = new RegularPolygon() { Drawing = drawing, Dependencies = dependencies };
return result;
}
/// <summary>
/// Parse a regular polygon. (Currently only equilateral triangles)
/// </summary>
/// <param name="rgon">The regular polygon to parse.</param>
private void ParseRegularPolygon(RegularPolygon rgon)
{
// Acquire the implicit center of the regular polygon
IPoint center = rgon.Dependencies.FindPoint(rgon.Center, 0);
IPoint vertex = rgon.Dependencies.FindPoint(rgon.Vertex, 0);
int numSides = rgon.NumberOfSides;
//
// Genereate vertex points knowing that the polygon is regular
//
IPoint[] pts = new IPoint[numSides];
double radius = Math.Distance(vertex.Coordinates.X, center.Coordinates.X, vertex.Coordinates.Y, center.Coordinates.Y);
double initAngle = Math.GetAngle(new System.Windows.Point(center.Coordinates.X, center.Coordinates.Y),
new System.Windows.Point(vertex.Coordinates.X, vertex.Coordinates.Y));
double increment = Math.DOUBLEPI / numSides;
// Vertex point generation and parsing.
for (int i = 0; i < numSides - 1; i++)
{
double angle = initAngle + (i + 1) * increment;
double X = center.Coordinates.X + radius * System.Math.Cos(angle);
double Y = center.Coordinates.Y + radius * System.Math.Sin(angle);
System.Windows.Point newPt = new System.Windows.Point(X, Y);
pts[i] = rgon.Dependencies.FindPoint(newPt, 0);
if (pts[i] == null) pts[i] = Factory.CreateFreePoint(drawing, newPt);
Parse(pts[i] as IFigure);
}
pts[numSides - 1] = vertex;
Parse(pts[numSides - 1] as IFigure);
//
// Generate sides from vertices
//
List<GeometryTutorLib.ConcreteAST.Segment> tutorSegments = new List<GeometryTutorLib.ConcreteAST.Segment>();
for (int i = 0; i < numSides; i++)
{
int j = (i + 1) % 3;
tutorSegments.Add(new GeometryTutorLib.ConcreteAST.Segment(uiToEngineMap[pts[i]] as Point, uiToEngineMap[pts[j]] as Point));
}
definedSegments.AddRange(tutorSegments);
GeometryTutorLib.ConcreteAST.Polygon newPoly = null;
switch(numSides)
{
case 3:
newPoly = new EquilateralTriangle(tutorSegments);
polygons[GeometryTutorLib.ConcreteAST.Polygon.TRIANGLE_INDEX].Add(newPoly);
break;
case 4:
Quadrilateral newQuad = Quadrilateral.GenerateQuadrilateral(tutorSegments);
if (newQuad != null)
{
newPoly = new Rhombus(newQuad);
polygons[GeometryTutorLib.ConcreteAST.Polygon.QUADRILATERAL_INDEX].Add(newPoly);
}
break;
case 5:
case 6:
case 7:
case 8:
case 9:
case 10:
break;
default:
break;
}
if (newPoly != null) uiToEngineMap.Add(rgon, newPoly);
}