public static void DrawPolygon(Polygon polygon, Color color)
{
GLUtil.SetColor(color);
Gl.glBegin(Gl.GL_LINE_STRIP);
{
foreach (Point p in polygon)
{
Gl.glVertex2d(p.X, p.Y);
}
}
Point point = polygon.VertexList.First();
Gl.glVertex2d(point.X, point.Y);
Gl.glEnd();
}
public static void DrawFilledPolygon(Polygon polygon, Color color)
{
Triangulator tr = new Triangulator(polygon.VertexList.ToArray());
int[] indices = tr.Triangulate();
GLUtil.SetColor(color);
Gl.glBegin(Gl.GL_TRIANGLES);
{
foreach (int index in indices)
{
Point p = polygon.VertexList[index];
Gl.glVertex2d(p.X, p.Y);
}
}
Gl.glEnd();
}
public Polygon AddPoint(Point point)
{
if (_mouseNearFirstVertex)
{
// Special case on completing the polygon.
// _vertexList.Add(_vertexList.First());
Polygon p = new Polygon(_vertexList);
_vertexList.Clear();
// reset the highlight
_mouseNearFirstVertex = false;
_highlightCircleTween = new Tween(0, 0, 0);
return p;
}
else
{
_vertexList.Add(new PolyVertex(point, new Tween(0, 10, 0.5, Tween.BounceEaseOut)));
}
return null;
}