private myPolygon Round_ver(myPolygon polygon, int start_position, Graphics graphics, Pen pen)
{
myPolygon copy_of_this = new myPolygon(this);
myPolygon copy_of_poly = new myPolygon(polygon);
copy_of_this.vertexes.RemoveAt(copy_of_this.vertexes.Count - 1);
for (int i = 0; i < start_position; i++)
{
copy_of_this.vertexes.Add(copy_of_this.vertexes[0]);
copy_of_this.vertexes.RemoveAt(0);
}
copy_of_this.vertexes.Add(copy_of_this.vertexes[0]);
myVertex Start_Vertex = copy_of_this.vertexes[0]; Start_Vertex.Paint(graphics, pen);
myPolygon result = new myPolygon(Start_Vertex);
Polygons_Iterator pthis = new Polygons_Iterator(copy_of_this,1);
Polygons_Iterator ppoly = new Polygons_Iterator(copy_of_poly,0);
Boolean I_REALLY_SHOULD_GO_AWAY = false;
while (!I_REALLY_SHOULD_GO_AWAY && !pthis.polygon.vertexes[pthis.pos].Equals(Start_Vertex))
{
result.AddVertex(pthis.polygon.vertexes[pthis.pos]);
new mySection(result.vertexes[result.vertexes.Count - 2], result.vertexes[result.vertexes.Count - 1]).Paint(graphics, pen);
result.vertexes[result.vertexes.Count - 1].Paint(graphics, pen);
pthis.pos++;
if (pthis.pos >= pthis.polygon.vertexes.Count)
break;
//такая же точка есть и в другом списке
int pos_in_poly = ppoly.polygon.ContainVertex(pthis.polygon.vertexes[pthis.pos-1], ppoly.pos);
if (pos_in_poly != -1)
{
ppoly.pos = pos_in_poly + 1;
myVector vector_in_first = new myVector(pthis.polygon.vertexes[pthis.pos-1], pthis.polygon.vertexes[pthis.pos]);
myVector vector_in_second = new myVector(pthis.polygon.vertexes[pthis.pos-1], ppoly.polygon.vertexes[ppoly.pos]);
//проверяем, нужен ли переход
if (vector_in_first.getVectorProduct(vector_in_second) < 0)
{
//нужен переход! поэтому дальше идём по второму списку
Boolean i_can_repeat = true;
while (!ppoly.polygon.vertexes[ppoly.pos].Equals(Start_Vertex) && i_can_repeat)
{
result.AddVertex(ppoly.polygon.vertexes[ppoly.pos]);
new mySection(result.vertexes[result.vertexes.Count - 2], result.vertexes[result.vertexes.Count - 1]).Paint(graphics, pen);
result.vertexes[result.vertexes.Count - 1].Paint(graphics, pen);
ppoly.pos++;
if (ppoly.pos >= ppoly.polygon.vertexes.Count)
break;
int pos_in_this = pthis.polygon.ContainVertex(ppoly.polygon.vertexes[ppoly.pos-1], pthis.pos);
if (pos_in_this != -1)
{
pthis.pos = pos_in_this + 1;
vector_in_first = new myVector(ppoly.polygon.vertexes[ppoly.pos-1], ppoly.polygon.vertexes[ppoly.pos]);
vector_in_second = new myVector(ppoly.polygon.vertexes[ppoly.pos-1], pthis.polygon.vertexes[pthis.pos]);
if (vector_in_first.getVectorProduct(vector_in_second) < 0)
i_can_repeat = false;
}
}
if (ppoly.polygon.vertexes[ppoly.pos].Equals(Start_Vertex))
I_REALLY_SHOULD_GO_AWAY = true;
}
}
}
result.vertexes.Add(result.vertexes[0]);
result.Paint(graphics, pen);
return result;
}
