public void DrawPolygon(Polygon.Polygon2i p)
{
DrawPolygon(p.xpoints, p.ypoints, p.npoints);
}
public void FillPolygon(Polygon.Polygon2i p)
{
FillPolygon(p.xpoints, p.ypoints, p.npoints);
}
public override Shape Transform(Matrix transform) {
CheckPoints();
Polygon resultPolygon = new Polygon();
float[] result = new float[points.Length];
transform.Transform(points, 0, result, 0, points.Length / 2);
resultPolygon.points = result;
resultPolygon.CheckPoints();
return resultPolygon;
}
public Shape GetShape()
{
if (isUpdate)
{
Setup();
poly = new Polygon();
/* foreach */
foreach (CycleProgress point in points)
{
poly.AddPoint(point.x, point.y);
}
}
return poly;
}
public Shape Prune()
{
Polygon result = new Polygon();
for (int i = 0; i < GetPointCount(); i++) {
int next = (i + 1 >= GetPointCount()) ? 0 : i + 1;
int prev = (i - 1 < 0) ? GetPointCount() - 1 : i - 1;
float dx1 = GetPoint(i)[0] - GetPoint(prev)[0];
float dy1 = GetPoint(i)[1] - GetPoint(prev)[1];
float dx2 = GetPoint(next)[0] - GetPoint(i)[0];
float dy2 = GetPoint(next)[1] - GetPoint(i)[1];
float len1 = Loon.Utils.MathUtils.Sqrt((dx1 * dx1) + (dy1 * dy1));
float len2 = Loon.Utils.MathUtils.Sqrt((dx2 * dx2) + (dy2 * dy2));
dx1 /= len1;
dy1 /= len1;
dx2 /= len2;
dy2 /= len2;
if ((dx1 != dx2) || (dy1 != dy2)) {
result.AddPoint(GetPoint(i)[0], GetPoint(i)[1]);
}
}
return result;
}
public PBody AddPolygon(bool fix, Polygon p, float angle, float density) {
PBody body = Polygon(fix, p, angle, density);
world.AddBody(body);
return body;
}
public PBody AddPolygon(bool fix, Polygon p) {
return AddPolygon(fix, p, 0F, 1F);
}
public PBody Polygon(bool fix, Polygon p, float angle, float density) {
PPolygon tmp = p.GetPPolygon(this.scale);
PConcavePolygonShape shape = new PConcavePolygonShape(tmp.xs, tmp.ys,
density);
PBody body = new PBody(angle, fix, new PShape[] { shape });
return body;
}
/// <summary>
/// 将指定的Point集合注入Polygon当中
/// </summary>
///
/// <param name="points"></param>
/// <returns></returns>
private static Polygon MakePolygon(List<Point[]> points) {
Polygon polygon = null;
if (!(points.Count==0)) {
int size = points.Count;
polygon = new Polygon();
for (int i = 0; i < size; i++) {
Point p = (points[i])[0];
polygon.AddPoint(p.x, p.y);
}
for (int i_0 = size - 1; i_0 >= 0; i_0--) {
Point p_1 = (points[i_0])[1];
polygon.AddPoint(p_1.x, p_1.y);
}
}
return polygon;
}