//http://gaggerostechnicalnotes.blogspot.com/2012/01/wpf-colors-scale.html
private WriteableBitmap CompleteColorScale(DSCore.Color start, Color end)
{
const int size = 64;
const int width = 1;
const int height = size;
var bitmap = new WriteableBitmap(width, height, 96, 96, PixelFormats.Bgra32, null);
var pixels = new uint[width * height];
for (int i = 0; i < size; i++)
{
var newRed = start.Red + ((end.Red - start.Red) / size) * i;
var newGreen = start.Green + ((end.Green - start.Green) / size) * i;
var newBlue = start.Blue + ((end.Blue - start.Blue) / size) * i;
pixels[i] = (uint)((255 << 24) + (newRed << 16) + (newGreen << 8) + newBlue);
}
bitmap.WritePixels(new Int32Rect(0, 0, width, height), pixels, width * 4, 0);
return(bitmap);
}
public void CustomizeView(ColorRange model, NodeView nodeView)
{
var drawPlane = new Image
{
Stretch = Stretch.Fill,
HorizontalAlignment = HorizontalAlignment.Stretch,
Width = 100,
Height = 200
};
var dm = nodeView.ViewModel.DynamoViewModel.Model;
nodeView.inputGrid.Children.Add(drawPlane);
model.RequestChangeColorRange += delegate
{
model.DispatchOnUIThread(delegate
{
var colorStartNode = model.InPorts[0].Connectors[0].Start.Owner;
var startIndex = model.InPorts[0].Connectors[0].Start.Index;
var colorEndNode = model.InPorts[1].Connectors[0].Start.Owner;
var endIndex = model.InPorts[1].Connectors[0].Start.Index;
var startId = colorStartNode.GetAstIdentifierForOutputIndex(startIndex).Name;
var endId = colorEndNode.GetAstIdentifierForOutputIndex(endIndex).Name;
var startMirror = dm.EngineController.GetMirror(startId);
var endMirror = dm.EngineController.GetMirror(endId);
object start = null;
object end = null;
if (startMirror == null)
{
start = DSCore.Color.ByARGB(255, 192, 192, 192);
}
else
{
if (startMirror.GetData().IsCollection)
{
start = startMirror.GetData().GetElements().
Select(x => x.Data).FirstOrDefault();
}
else
{
start = startMirror.GetData().Data;
}
}
if (endMirror == null)
{
end = DSCore.Color.ByARGB(255, 64, 64, 64);
}
else
{
if (endMirror.GetData().IsCollection)
{
end = endMirror.GetData().GetElements().
Select(x => x.Data).FirstOrDefault();
}
else
{
end = endMirror.GetData().Data;
}
}
DSCore.Color startColor = start as DSCore.Color;
DSCore.Color endColor = end as DSCore.Color;
if (null != startColor && null != endColor)
{
WriteableBitmap bmp = CompleteColorScale(startColor, endColor);
drawPlane.Source = bmp;
}
});
};
}
