protected override void OnRender(DrawingContext drawingContext)
{
refreshOfffsetLines();
var _itemBrush = new SolidColorBrush(Color.FromArgb(128, 255, 64, 64));
var _itemPen = new Pen(Brushes.DarkRed, 1.0);
var _cutPen = new Pen(Brushes.Blue, 2.0);
var itemPoints = TransformedShapeDefinition.ToArray();
var geometry = CreatePathFigure(itemPoints);
drawingContext.DrawGeometry(_itemBrush, _itemPen, geometry);
var offsetLines = OffsetLines.ToArray();
var offsetGeometry = CreatePathFigure(offsetLines);
drawingContext.DrawGeometry(null, _cutPen, offsetGeometry);
}
private IEnumerable <Point4Dmm> templatedCutPoints()
{
//find top/bottom templates
var definitionPoints = TransformedShapeDefinition.ToArray();
definitionPoints = addHorizontalKerf(definitionPoints).ToArray();
double minHorizontalCoord, maxHorizontalCoord, minVerticalCoord;
int minHorizontalIndex, maxHorizontalIndex, minVerticalIndex;
findBoxPoints(definitionPoints, out minHorizontalCoord, out maxHorizontalCoord, out minVerticalCoord, out minHorizontalIndex, out maxHorizontalIndex, out minVerticalIndex);
var templateMinMax = new List <Point4Dmm>();
var templateMaxMin = new List <Point4Dmm>();
var isMinMax = true;
for (var i = minHorizontalIndex; i < minHorizontalIndex + definitionPoints.Length; ++i)
{
var pointIndex = i % definitionPoints.Length;
var point = definitionPoints[pointIndex];
if (isMinMax)
{
//first template points
templateMinMax.Add(point);
}
if (pointIndex == maxHorizontalIndex)
{
isMinMax = false;
}
if (!isMinMax)
{
//second template points
templateMaxMin.Add(point);
}
}
//distinguish which template is top, and which bottom
var isMinMaxTop = minHorizontalIndex > minVerticalIndex && minVerticalIndex < maxHorizontalIndex;
if (minHorizontalIndex == minVerticalIndex || maxHorizontalIndex == minVerticalIndex)
{
throw new NotImplementedException("Degenerated shape, probably not good for templated cut");
}
templateMaxMin.Reverse();// the template was drawn in the opposite direction
var topTemplate = isMinMaxTop ? templateMinMax : templateMaxMin;
var bottomTemplate = isMinMaxTop ? templateMaxMin : templateMinMax;
//define template scaffold points
var startPoint = topTemplate.First();
var endPoint = topTemplate.Last();
var margin = 30;
var marginTop = 55;
var syncMargin = 5;
var topLineC2 = minVerticalCoord - marginTop; //TODO load from shape settings
var entryC1 = minHorizontalCoord - margin; //TODO load from shape settings
var finishC1 = maxHorizontalCoord + margin; //TODO load from shape settings
var entryScaffoldPoint = new Point4Dmm(entryC1, startPoint.V, entryC1, startPoint.Y);
var syncEntryScaffoldPoint = new Point4Dmm(startPoint.U - syncMargin, startPoint.V, startPoint.X - syncMargin, startPoint.Y);
var aboveEntryScaffoldPoint = new Point4Dmm(entryC1, topLineC2, entryC1, topLineC2);
var finishScaffoldPoint = new Point4Dmm(finishC1, endPoint.V, finishC1, endPoint.Y);
var syncFinishScaffoldPoint = new Point4Dmm(endPoint.U + syncMargin, endPoint.V, endPoint.X + syncMargin, endPoint.Y);
var aboveFinishScaffoldPoint = new Point4Dmm(finishC1, topLineC2, finishC1, topLineC2);
//construct the cut
var points = new List <Point4Dmm>();
//bottom template first
points.Add(entryScaffoldPoint);
points.Add(syncEntryScaffoldPoint);
points.AddRange(bottomTemplate);
points.Add(syncFinishScaffoldPoint);
points.Add(finishScaffoldPoint);
points.Add(aboveFinishScaffoldPoint);
points.Add(aboveEntryScaffoldPoint);
points.Add(entryScaffoldPoint);
points.Add(syncEntryScaffoldPoint);
//top template cut
points.AddRange(topTemplate);
points.Add(syncFinishScaffoldPoint);
points.Add(finishScaffoldPoint);
points.Add(aboveFinishScaffoldPoint);
points.Add(aboveEntryScaffoldPoint);
points.Add(entryScaffoldPoint);
//entry point at the end is implicit (shape is closed)
return(points);
}
