internal ViewportOverlay(IViewport viewport)
{
_viewport = viewport;
_width = -1;
_height = -1;
_buffer = Engine.Engine.Interface.CreateBuffer();
_buffer.Update(new []
{
new VertexStandard {
Position = new Vector3(0, 0, 0), Texture = new Vector2(0, 0)
},
new VertexStandard {
Position = new Vector3(0, 1, 0), Texture = new Vector2(0, 1)
},
new VertexStandard {
Position = new Vector3(1, 1, 0), Texture = new Vector2(1, 1)
},
new VertexStandard {
Position = new Vector3(1, 0, 0), Texture = new Vector2(1, 0)
},
}, new uint[]
{
0, 2, 1,
0, 3, 2
});
}
private void Update()
{
if (!(_viewport.Camera is OrthographicCamera oc))
{
return;
}
if (_grid == null)
{
return;
}
var newBounds = GetValidatedBounds(oc, 50);
var min = oc.Expand(new Vector3(newBounds.Left, newBounds.Top, 0));
var max = oc.Expand(new Vector3(newBounds.Right, newBounds.Bottom, 0));
var normal = Vector3.One - oc.Expand(new Vector3(1, 1, 0));
var points = new List <VertexStandard>();
var indices = new List <uint>();
uint idx = 0;
foreach (var line in _grid.GetLines(normal, oc.Zoom, min, max).OrderBy(x => (int)x.Type))
{
var c = GetColorForGridLineType(line.Type);
var col = new Vector4(c.R, c.G, c.B, c.A) / 255f;
points.Add(new VertexStandard
{
Position = line.Line.Start,
Normal = normal,
Colour = col,
Texture = Vector2.Zero,
Tint = Vector4.One
});
points.Add(new VertexStandard
{
Position = line.Line.End,
Normal = normal,
Colour = col,
Texture = Vector2.Zero,
Tint = Vector4.One
});
indices.Add(idx++);
indices.Add(idx++);
}
_buffer.Update(points, indices);
_indexCount = idx;
_validated = true;
_currentType = oc.ViewType;
_currentZoom = oc.Zoom;
_currentBounds = newBounds;
}