public void Render2D()
{
if (_rect.IsEmpty)
{
var te = _printer.Measure(_text, SystemFonts.MessageBoxFont, new RectangleF(0, 0, Viewport.Width, Viewport.Height));
_rect = te.BoundingBox;
_rect.X += 5;
_rect.Y += 2;
_rect.Width += 5;
_rect.Height += 2;
}
GL.Disable(EnableCap.CullFace);
_printer.Begin();
if (_showing)
{
GL.Begin(PrimitiveType.Quads);
GL.Color3(Viewport is Viewport3D ? View.ViewportBackground : Grid.Background);
GL.Vertex2(0, 0);
GL.Vertex2(_rect.Right, 0);
GL.Vertex2(_rect.Right, _rect.Bottom);
GL.Vertex2(0, _rect.Bottom);
GL.End();
}
_printer.Print(_text, SystemFonts.MessageBoxFont, _showing ? Color.White : Grid.GridLines, _rect);
_printer.End();
GL.Enable(EnableCap.CullFace);
}
public void FillTriangle(RectangleF dstRect)
{
DrawBegin(dstRect);
GL.Begin(PrimitiveType.Triangles);
GL.Vertex2(0.0f, dstRect.Height);
GL.Vertex2(dstRect.Width * 0.5f, 0);
GL.Vertex2(dstRect.Width, dstRect.Height);
GL.End();
DrawEnd();
}
public void DrawTriangle(RectangleF dstRect)
{
GL.LineWidth(1.0f);
DrawBegin(dstRect);
GL.Begin(PrimitiveType.LineLoop);
GL.Vertex2(0.0f, dstRect.Height);
GL.Vertex2(dstRect.Width * 0.5f, 0);
GL.Vertex2(dstRect.Width, dstRect.Height);
GL.End();
DrawEnd();
}
public void FillRect(RectangleF dstRect)
{
DrawBegin(dstRect);
GL.Begin(PrimitiveType.Quads);
GL.Vertex2(0, 0);
GL.Vertex2(dstRect.Width, 0);
GL.Vertex2(dstRect.Width, dstRect.Height);
GL.Vertex2(0, dstRect.Height);
GL.End();
DrawEnd();
}
public void DrawLine(Vector2 from, Vector2 to)
{
GL.LineWidth(1.0f);
var minX = Math.Min(from.X, to.X);
var minY = Math.Min(from.Y, to.Y);
var minV = new Vector2(minX, minY);
var sx = Math.Abs(from.X - to.X);
var sy = Math.Abs(from.Y - to.Y);
DrawBegin(new RectangleF(minX, minY, sx, sy));
GL.Begin(PrimitiveType.Lines);
GL.Vertex2(from - minV);
GL.Vertex2(to - minV);
GL.End();
DrawEnd();
}
public void FillEllipse(RectangleF dstRect)
{
var w = dstRect.Width / 2.0;
var h = dstRect.Height / 2.0;
DrawBegin(dstRect);
GL.Begin(PrimitiveType.TriangleFan);
GL.Vertex2(w, h);
for (var i = 0.0; i <= 60.0; i++)
{
var rad = MathHelper.DegreesToRadians(i * 6.0);
var s = Math.Sin(rad);
var c = Math.Cos(rad);
GL.Vertex2(w + c * w, h + s * h);
}
GL.End();
DrawEnd();
}
public static void Vertex2(Vector2d v)
{
GL.Vertex2(v.X, v.Y);
}
