/// <summary>
/// draw all markers (graph / legend)
/// </summary>
/// <param name="marker">the marker object (for properties)</param>
/// <param name="vertices">coords, interleaved</param>
/// <param name="vertcount">number of coords, special: -1 for legend rendering</param>
/// <remarks>This function is reused for both: drawing in world coords (graph) and drawing in
/// screen coords (legend). Latter case requires vertcount to be -1, vertices must contain
/// at least 2 float values than!</remarks>
internal override void Draw(ILRenderProperties p, ILMarker marker, C4bV3f[] vertices, int startID, int vertcount)
{
if (vertcount > 0)
{
int inc = Math.Max(1, (vertcount / m_maxLabelsDrawn));
m_renderer.Begin(p);
for (int i = 0; i < vertcount; i += inc)
{
#region draw textured points (slow version: textured quads)
string expr = m_expression.Replace("\\index", i.ToString());
expr = expr.Replace("\\xvalue", vertices[i].XPosition.ToString(m_valueFormat));
expr = expr.Replace("\\yvalue", vertices[i].YPosition.ToString(m_valueFormat));
ILRenderQueue queue = m_interpreter.Transform(expr, m_font, marker.Color, m_renderer);
#region determine size for markers in world coords (graph limits)
float w, h;
ILClippingData clip = m_panel.Limits;
float s05x;
float s05y;
s05x = Math.Abs(queue.Size.Width * clip.WidthF / 2 / (m_panel.ClientSize.Width));
s05y = Math.Abs(queue.Size.Height * clip.HeightF / 2 / (m_panel.ClientSize.Height));
#endregion
// this is slow! Todo: replace by point sprites!
w = vertices[i].XPosition;
h = vertices[i].YPosition;
if (m_panel.ClipViewData && (w < clip.XMin || w > clip.XMax || h < clip.YMin || h > clip.YMax))
{
continue;
}
m_renderer.Draw(queue, w - s05x, h + s05y, vertices[i].ZPosition,
w + s05x, h - s05y, vertices[i].ZPosition, marker.Color);
#endregion
}
m_renderer.End(p);
}
else if (vertcount == -1)
{
#region render for legend
m_renderer.Begin(p);
string expr = m_expression.Replace("\\index", "0");
expr = expr.Replace("\\xvalue", "0.2");
expr = expr.Replace("\\yvalue", "0.4");
ILRenderQueue queue = m_interpreter.Transform(expr, m_font, marker.Color, m_renderer);
#region determine size for markers in SCREEN COORDS
float w, h;
ILClippingData clip = m_panel.Limits;
float s05x;
float s05y;
s05x = Math.Abs(queue.Size.Width / 2);
s05y = Math.Abs(queue.Size.Height / 2);
#endregion
// this is slow! Todo: replace by point sprites!
w = vertices[0].XPosition;
h = vertices[0].YPosition;
m_renderer.Draw(queue, w - s05x, h - s05y, 0, w + s05x, h + s05y, 0, marker.Color);
m_renderer.End(p);
#endregion
}
}
/// <summary>
/// draws the whole rendering queue
/// </summary>
public virtual void Draw(ILRenderProperties p)
{
if (m_expression != m_cachedExpression)
{
interprete(m_expression);
}
m_renderer.Begin(p);
m_renderer.Draw(m_renderQueue, offsetAlignment(m_renderQueue.Size), m_orientation, m_color);
m_renderer.End(p);
}