// Create a ValueRangePalette to present Heatmap's data.
private ValueRangePalette CreatePalette(IntensityGridSeries series)
{
// 2. Creating palette for IntensityGridSeries.
var palette = new ValueRangePalette(series);
// 3. LightningChart has some preset values for palette steps.
// Clear the preset values from palette before setting new ones.
foreach (var step in palette.Steps)
{
step.Dispose();
}
palette.Steps.Clear();
// 4. Adding steps into palette.
// Palette is used for presenting data in Heat Map with different colors based on their value.
palette.Steps.Add(new PaletteStep(palette, Color.FromRgb(0, 0, 255), -25));
palette.Steps.Add(new PaletteStep(palette, Color.FromRgb(20, 150, 255), 0));
palette.Steps.Add(new PaletteStep(palette, Color.FromRgb(0, 255, 0), 25));
palette.Steps.Add(new PaletteStep(palette, Color.FromRgb(255, 255, 20), 50));
palette.Steps.Add(new PaletteStep(palette, Color.FromRgb(255, 150, 20), 75));
palette.Steps.Add(new PaletteStep(palette, Color.FromRgb(255, 0, 0), 100));
palette.Type = PaletteType.Gradient;
palette.MinValue = -50;
// Return the created palette.
return(palette);
}
// Create a ValueRangePalette to present SurfaceGrid's data.
private ValueRangePalette CreatePalette(SurfaceGridSeries3D series)
{
// Creating palette for SurfaceGridSeries3D.
var palette = new ValueRangePalette(series);
// LightningChart has some preset values for palette steps.
// Clear the preset values from palette before setting new ones.
foreach (var step in palette.Steps)
{
step.Dispose();
}
palette.Steps.Clear();
// Add steps into palette.
// Palette is used for presenting data in SurfaceGrid with different colors based on their value.
palette.Steps.Add(new PaletteStep(palette, Color.Blue, -25));
palette.Steps.Add(new PaletteStep(palette, Color.DodgerBlue, 0));
palette.Steps.Add(new PaletteStep(palette, Color.LawnGreen, 25));
palette.Steps.Add(new PaletteStep(palette, Color.Yellow, 50));
palette.Steps.Add(new PaletteStep(palette, Color.Orange, 75));
palette.Steps.Add(new PaletteStep(palette, Color.Red, 100));
palette.Type = PaletteType.Gradient;
palette.MinValue = -50;
// Return the created palette.
return(palette);
}
/// <summary>
/// 设置调色板的颜色区间
/// </summary>
/// <param name="ownerSeries"></param>
/// <param name="valueMin"></param>
/// <param name="valueMax"></param>
/// <returns></returns>
private ValueRangePalette CreatePalette(IntensityGridSeries ownerSeries, double valueMin, double valueMax)
{
ValueRangePalette palette = new ValueRangePalette(ownerSeries);
palette.Steps.Clear();
ExampleUtils.DisposeAllAndClear(palette.Steps);
double valueStep = (valueMax - valueMin) / 20.0;
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(0, 17, 190), valueMin));
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(0, 17, 190), valueMin + valueStep * 2));
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(0, 151, 255), valueMin + valueStep * 3));
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(0, 221, 151), valueMin + valueStep * 4));
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(34, 236, 85), valueMin + valueStep * 5));
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(84, 255, 51), valueMin + valueStep * 6));
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(135, 255, 17), valueMin + valueStep * 7));
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(169, 255, 0), valueMin + valueStep * 8));
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(204, 255, 0), valueMin + valueStep * 9));
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(255, 255, 0), valueMin + valueStep * 10));
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(255, 204, 0), valueMin + valueStep * 11));
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(255, 170, 0), valueMin + valueStep * 12));
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(255, 136, 0), valueMin + valueStep * 13));
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(255, 92, 0), valueMin + valueStep * 14));
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(255, 51, 0), valueMin + valueStep * 15));
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(255, 36, 0), valueMin + valueStep * 16));
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(255, 56, 56), valueMin + valueStep * 17));
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(255, 115, 171), valueMin + valueStep * 18));
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(255, 170, 238), valueMin + valueStep * 19));
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(255, 220, 255), valueMin + valueStep * 20));
palette.Type = PaletteType.Gradient;
palette.MinValue = valueMin;
return(palette);
}
// Create chart instance.
public void CreateChart()
{
// Create chart.
_chart = new LightningChartUltimate();
// Set chart control into the parent container.
_chart.Parent = this;
_chart.Dock = DockStyle.Fill;
// Disable rendering before updating chart properties to improve performance
// and to prevent unnecessary chart redrawing while changing multiple properties.
_chart.BeginUpdate();
// 1. Set View3D as active view and set Y-axis range.
_chart.ActiveView = ActiveView.View3D;
_chart.View3D.YAxisPrimary3D.SetRange(-50, 100);
// Set a LegendBox into a chart with vertical layout.
_chart.View3D.LegendBox.Layout = LegendBoxLayout.Vertical;
// 2. Create a new SurfaceGrid instance as SurfaceGridSeries3D.
_surfaceGrid = new SurfaceGridSeries3D(_chart.View3D, Axis3DBinding.Primary, Axis3DBinding.Primary, Axis3DBinding.Primary);
// 3. Set range, size and color saturation options for SurfaceGrid.
_surfaceGrid.RangeMinX = MinX;
_surfaceGrid.RangeMaxX = MaxX;
_surfaceGrid.RangeMinZ = MinZ;
_surfaceGrid.RangeMaxZ = MaxZ;
_surfaceGrid.SizeX = _columns;
_surfaceGrid.SizeZ = _rows;
// Stronger colors.
_surfaceGrid.ColorSaturation = 80;
// 4. Create ValueRangePalette for coloring SurfaceGrid's data.
ValueRangePalette palette = CreatePalette(_surfaceGrid);
_surfaceGrid.ContourPalette = palette;
// 5. Define WireFrameType and ContourLineType for SurfaceGrid.
_surfaceGrid.WireframeType = SurfaceWireframeType3D.WireframePalettedByY;
_surfaceGrid.ContourLineType = ContourLineType3D.ColorLineByY;
_surfaceGrid.ContourLineWidth = 2;
// Add SurfaceGridSeries to chart.
_chart.View3D.SurfaceGridSeries3D.Add(_surfaceGrid);
#region Hidden polishing
// Customize chart.
CustomizeChart(_chart);
#endregion
// Call EndUpdate to enable rendering again.
_chart.EndUpdate();
}
private ValueRangePalette CreatePalette(SeriesBase3D ownerSeries, double valueMax)
{
ValueRangePalette palette = new ValueRangePalette(ownerSeries);
palette.Steps.Clear();
palette.MinValue = 0;
palette.Type = PaletteType.Gradient;
palette.Steps.Add(new PaletteStep(palette, Colors.Blue, 0));
palette.Steps.Add(new PaletteStep(palette, Colors.Green, valueMax * 0.3));
palette.Steps.Add(new PaletteStep(palette, Colors.Yellow, valueMax * 0.6));
palette.Steps.Add(new PaletteStep(palette, Colors.Red, valueMax));
return(palette);
}
/// <summary>
/// 创建强度多色阶调色板
/// </summary>
/// <param name="ownerSeries">父</param>
/// <param name="yRange">y值范围</param>
/// <returns></returns>
private ValueRangePalette CreatePalette(IntensitySeriesBase ownerSeries, double yRange)
{
ValueRangePalette palette = new ValueRangePalette(ownerSeries);
DisposeAllAndClear(palette.Steps);
palette.Steps.Add(new PaletteStep(palette, Colors.Black, 0));
palette.Steps.Add(new PaletteStep(palette, Colors.Lime, 30 * yRange / 100.0));
palette.Steps.Add(new PaletteStep(palette, Colors.Yellow, 60.0 * yRange / 100.0));
palette.Steps.Add(new PaletteStep(palette, Colors.Red, 100.0 * yRange / 100.0));
palette.Type = PaletteType.Gradient;
return(palette);
}
private ValueRangePalette CreatePalette(SeriesBaseXY ownerSeries, double min, double max)
{
ValueRangePalette palette = new ValueRangePalette(ownerSeries);
double range = max - min;
palette.Steps.Clear();
palette.Steps.Add(new PaletteStep(palette, Color.FromRgb(0, 0, 0), min));
palette.Steps.Add(new PaletteStep(palette, Color.FromRgb(0, 0, 255), min + 1 * range / 6));
palette.Steps.Add(new PaletteStep(palette, Color.FromRgb(0, 255, 255), min + 2 * range / 6));
palette.Steps.Add(new PaletteStep(palette, Color.FromRgb(0, 255, 0), min + 3 * range / 6));
palette.Steps.Add(new PaletteStep(palette, Color.FromRgb(255, 255, 0), min + 4 * range / 6));
palette.Steps.Add(new PaletteStep(palette, Color.FromRgb(255, 0, 0), min + 5 * range / 6));
palette.Steps.Add(new PaletteStep(palette, Color.FromRgb(255, 0, 255), max));
palette.Type = PaletteType.Gradient;
palette.MinValue = min;
return(palette);
}
private ValueRangePalette CreatePalette(SeriesBase3D ownerSeries, double max)
{
ValueRangePalette palette = new ValueRangePalette(ownerSeries);
palette.Steps.Clear();
//Transparent value for 'invalid' points. They are way below this value and thus become transparent
palette.Steps.Add(new PaletteStep(palette, Color.FromArgb(0, 0, 0, 0), -0.01));
//Actual steps
palette.Steps.Add(new PaletteStep(palette, Colors.Blue, 0));
palette.Steps.Add(new PaletteStep(palette, Colors.Green, max * 0.3));
palette.Steps.Add(new PaletteStep(palette, Colors.Yellow, max * 0.6));
palette.Steps.Add(new PaletteStep(palette, Colors.Red, max));
palette.Type = PaletteType.Gradient;
return(palette);
}
