public Image GetImage(int pixelWidth, int pixelHeight, int contextId)
{
_viewMode = (ViewMode)contextId;
Image image;
if (_useTimeline && _viewMode.HasFlag(ViewMode.TimelineFlag))
{
// Draw the timeline itself
Viewport viewport = new Viewport(pixelWidth, pixelHeight, 0f, 1f, -2f, 2f);
image = _timeline.Draw(viewport);
}
else
{
// Draw painting
image = this.Draw(pixelWidth, pixelHeight);
}
_viewMode = default(ViewMode);
return(image);
}
public Image Draw(int pixelWidth, int pixelHeight)
{
//!!! always recreate viewport ?
float x0 = 0f;
float x1 = _viewMode.HasFlag(ViewMode.Logarithmic) ? _itemCountPow : 1f;
Viewport viewport = new Viewport(
pixelWidth,
pixelHeight,
x0, x1, -1f, 2f,
yUp: true
);
float boundX = viewport.GetUserBounds()[1].X;
Image image = new Image(viewport); // recreate image
// fill blank
image.Rectangle(viewport.GetUserBounds())
.Add()
.FillStroke(Color.White, Color.Empty);
if (_items == null)
{
return(image);
}
var groupLines = image.Group().Add();
var groupCircles = image.Group().Add();
var groupNumbers = image.Group().Add();
foreach (Item item in _items)
{
if (item.parent != null && item.parent.parent != null)
{
if (item.parent.pos.x == 0f || item.parent.pos.x > boundX)
{
//continue;
}
}
item.pos = GetPos(item);
var viewPos = GetViewPos(item.pos);
float radius = GetViewRadius(item);
if (item.parent != null)
{
// draw segment-line from the parent
int segmentCount = item.parent.parent == null ? 100 : 10;
//int segmentCount = 1;
var points = Enumerable.Range(0, segmentCount + 1)
.Select(j => GetPos(item, (double)j / segmentCount))
.Select(p => GetViewPos(p))
.ToArray();
image.Line(points)
.Add(groupLines)
.FillStroke(Color.Empty, Color.Gray, strokeWidth: radius * 0.1f);
}
image.Circle(viewPos, radius)
.Add(groupCircles)
.FillStroke(Color.Gray, Color.Empty);
string text = item.integer.ToString();
//if (item.parent != null) text = item.parent.integer.ToString() + "->" + text;
image.Text(viewPos, text, radius, align: Image.Align.Center, centerHeight: true)
.Add(groupNumbers)
.FillStroke(Color.Black, Color.Empty);
}
return(image);
}
