private void Render2D(Viewport2D viewport)
{
var pp = viewport.Flatten(_pivotPoint);
GL.Begin(PrimitiveType.Lines);
GL.Color3(Color.Cyan);
GLX.Circle(new Vector2d(pp.DX, pp.DY), 4, (double)viewport.Zoom);
GL.Color3(Color.White);
GLX.Circle(new Vector2d(pp.DX, pp.DY), 8, (double)viewport.Zoom);
GL.End();
}
public override void Render2D(Viewport2D viewport)
{
var pos = viewport.Flatten(_origin.Coordinate);
GL.Color3(Color.Cyan);
GL.Begin(PrimitiveType.Lines);
GLX.Circle(new Vector2d(pos.DX, pos.DY), 8, (double)viewport.Zoom);
GL.End();
GL.Begin(PrimitiveType.Points);
GL.Vertex2(pos.DX, pos.DY);
GL.End();
}
/// <summary>
/// Render all the handles as squares or circles depending on class implementation
/// </summary>
/// <param name="viewport">The viewport to draw in</param>
/// <param name="start">The start of the box</param>
/// <param name="end">The end of the box</param>
private void RenderHandles(Viewport2D viewport, Coordinate start, Coordinate end)
{
if (_currentTool == null)
{
return;
}
var circles = _currentTool.RenderCircleHandles;
// Get the filtered list of handles, and convert them to vector locations
var z = (double)viewport.Zoom;
var handles = _currentTool.GetHandles(start, end, viewport.Zoom)
.Where(x => _currentTool.FilterHandle(x.Item1))
.Select(x => new Vector2d((double)x.Item2, (double)x.Item3))
.ToList();
// Draw the insides of the handles in white
GL.Color3(Color.White);
foreach (var handle in handles)
{
GL.Begin(BeginMode.Polygon);
if (circles)
{
GLX.Circle(handle, 4, z, loop: true);
}
else
{
GLX.Square(handle, 4, z, true);
}
GL.End();
}
// Draw the borders of the handles in black
GL.Color3(Color.Black);
GL.Begin(BeginMode.Lines);
foreach (var handle in handles)
{
if (circles)
{
GLX.Circle(handle, 4, z);
}
else
{
GLX.Square(handle, 4, z);
}
}
GL.End();
}
public override void Render(ViewportBase viewport)
{
var vp = viewport as Viewport2D;
if (vp == null)
{
return;
}
var cams = GetCameras().ToList();
if (!cams.Any())
{
return;
}
var z = (double)vp.Zoom;
GL.Enable(EnableCap.LineSmooth);
GL.Hint(HintTarget.LineSmoothHint, HintMode.Nicest);
// Draw lines between points and point outlines
GL.Begin(BeginMode.Lines);
foreach (var camera in cams)
{
var p1 = vp.Flatten(camera.EyePosition);
var p2 = vp.Flatten(camera.LookPosition);
GL.Color3(camera == Document.Map.ActiveCamera ? Color.Red : Color.Cyan);
GL.Vertex2(p1.DX, p1.DY);
GL.Vertex2(p2.DX, p2.DY);
GL.Vertex2(p2.DX, p2.DY);
GL.Vertex2(p1.DX, p1.DY);
}
GL.End();
GL.Enable(EnableCap.PolygonSmooth);
GL.Hint(HintTarget.PolygonSmoothHint, HintMode.Nicest);
foreach (var camera in cams)
{
var p1 = vp.Flatten(camera.EyePosition);
// Position circle
GL.Begin(BeginMode.Polygon);
GL.Color3(camera == Document.Map.ActiveCamera ? Color.DarkOrange : Color.LawnGreen);
GLX.Circle(new Vector2d(p1.DX, p1.DY), 4, z, loop: true);
GL.End();
}
foreach (var camera in cams)
{
var p1 = vp.Flatten(camera.EyePosition);
var p2 = vp.Flatten(camera.LookPosition);
var multiplier = 4 / vp.Zoom;
var dir = (p2 - p1).Normalise();
var cp = new Coordinate(-dir.Y, dir.X, 0).Normalise();
// Direction Triangle
GL.Begin(BeginMode.Triangles);
GL.Color3(camera == Document.Map.ActiveCamera ? Color.Red : Color.Cyan);
Coord(p2 - (dir - cp) * multiplier);
Coord(p2 - (dir + cp) * multiplier);
Coord(p2 + dir * 1.5m * multiplier);
GL.End();
}
GL.Disable(EnableCap.PolygonSmooth);
GL.Begin(BeginMode.Lines);
foreach (var camera in cams)
{
var p1 = vp.Flatten(camera.EyePosition);
var p2 = vp.Flatten(camera.LookPosition);
var multiplier = 4 / vp.Zoom;
var dir = (p2 - p1).Normalise();
var cp = new Coordinate(-dir.Y, dir.X, 0).Normalise();
GL.Color3(Color.Black);
GLX.Circle(new Vector2d(p1.DX, p1.DY), 4, z);
Coord(p2 + dir * 1.5m * multiplier);
Coord(p2 - (dir + cp) * multiplier);
Coord(p2 - (dir + cp) * multiplier);
Coord(p2 - (dir - cp) * multiplier);
Coord(p2 - (dir - cp) * multiplier);
Coord(p2 + dir * 1.5m * multiplier);
}
GL.End();
GL.Disable(EnableCap.LineSmooth);
}