public void Render()
{
Gl.glClearColor(1, 1, 1, 0);
Gl.glClear(Gl.GL_COLOR_BUFFER_BIT);
_pathFinder.Polygons.ForEach(x => PolyDrawer.RenderPoly(x));
if (_drawingPath)
{
PrimitiveDrawer.DrawFilledCircle(_pathStart, 15, new Color(0, 0, 0, 1));
}
GLUtil.SetColor(new Color(1, 0, 0, 1));
Gl.glBegin(Gl.GL_LINE_STRIP);
{
foreach (Point p in _path)
{
GLUtil.DrawPointVertex(p);
}
}
Gl.glEnd();
_renderer.DrawText(0, 0, "Path Drawing State", _font);
Gl.glEnable(Gl.GL_TEXTURE_2D);
Gl.glBlendFunc(Gl.GL_SRC_ALPHA, Gl.GL_ONE_MINUS_SRC_ALPHA);
_renderer.Render();
Gl.glDisable(Gl.GL_TEXTURE_2D);
}
private void DrawPath(List <NavNode> list)
{
GLUtil.SetColor(new Color(0, 0, 0, 1));
Gl.glBegin(Gl.GL_LINE_STRIP);
{
foreach (NavNode node in list)
{
GLUtil.DrawPointVertex(node.Position);
}
}
Gl.glEnd();
}
internal static void RenderPoly(ConvexPolyForm poly)
{
Gl.glBegin(Gl.GL_LINE_STRIP);
{
foreach (Point p in poly.Vertices)
{
GLUtil.DrawPointVertex(p);
}
GLUtil.DrawPointVertex(poly.Vertices.First());
}
Gl.glEnd();
}
private void RenderNormals(ConvexPolyForm poly)
{
GLUtil.SetColor(new Color(0, 1, 0, 1));
foreach (EdgeIndex edge in poly.Edges)
{
Point start = poly.Vertices[edge.Start];
Point end = poly.Vertices[edge.End];
Point middle = LineSegment.GetMiddle(start, end);
Point normal = EdgeIndex.GetLineNormal(start, end);
Gl.glBegin(Gl.GL_LINES);
{
GLUtil.DrawPointVertex(middle);
GLUtil.DrawPointVertex(new Point(middle.X + (normal.X * 50), middle.Y + (normal.Y * 50)));
}
Gl.glEnd();
}
}
private void RenderNearestEdge(ConvexPolyForm poly)
{
EdgeIndex edge = poly.GetClosestEdge(_input.Mouse.Position);
GLUtil.SetColor(new Color(1, 0, 0, 1));
Gl.glBegin(Gl.GL_LINE_STRIP);
{
GLUtil.DrawPointVertex(poly.Vertices[edge.Start]);
GLUtil.DrawPointVertex(poly.Vertices[edge.End]);
}
Gl.glEnd();
// Render closest point
Point p = EdgeIndex.GetClosestPoint(poly.Vertices[edge.Start], poly.Vertices[edge.End], _input.Mouse.Position);
Gl.glBegin(Gl.GL_POINTS);
{
GLUtil.DrawPointVertex(p);
}
Gl.glEnd();
}