// This draws the individual point features
private void DrawFeatures(MapArgs e, IEnumerable <int> indices, bool selected)
{
if (selected && (!DrawnStatesNeeded || !DrawnStates.Any(_ => _.Selected)))
{
return; // there are no selected features
}
Graphics g = e.Device ?? Graphics.FromImage(BackBuffer);
Matrix origTransform = g.Transform;
FeatureType featureType = DataSet.FeatureType;
double minX = e.MinX;
double maxY = e.MaxY;
double dx = e.Dx;
double dy = e.Dy;
// CGX
if (dx < 2000000000 && dx > -2000000000 && dy < 2000000000 && dy > -2000000000)
{
if (!DrawnStatesNeeded)
{
if (Symbology == null || Symbology.Categories.Count == 0)
{
return;
}
FastDrawnState state = new FastDrawnState(false, Symbology.Categories[0]);
IPointSymbolizer ps = (state.Category as IPointCategory)?.Symbolizer;
if (ps == null)
{
return;
}
double[] vertices = DataSet.Vertex;
foreach (int index in indices)
{
// CGX
if (Visibility != null)
{
bool visi = Visibility[index].Visible;
if (!visi)
{
continue;
}
}
if (featureType == FeatureType.Point)
{
DrawPoint(vertices[index * 2], vertices[(index * 2) + 1], e, ps, g, origTransform);
}
else
{
// multi-point
ShapeRange range = DataSet.ShapeIndices[index];
for (int i = range.StartIndex; i <= range.EndIndex(); i++)
{
DrawPoint(vertices[i * 2], vertices[(i * 2) + 1], e, ps, g, origTransform);
}
}
}
}
else
{
FastDrawnState[] states = DrawnStates;
var indexList = indices as IList <int> ?? indices.ToList();
if (indexList.Max() >= states.Length)
{
AssignFastDrawnStates();
states = DrawnStates;
}
double[] vertices = DataSet.Vertex;
foreach (int index in indexList)
{
if (index >= states.Length)
{
break;
}
FastDrawnState state = states[index];
if (!state.Visible || state.Category == null)
{
continue;
}
if (selected && !state.Selected)
{
continue;
}
IPointCategory pc = state.Category as IPointCategory;
if (pc == null)
{
continue;
}
IPointSymbolizer ps = selected ? pc.SelectionSymbolizer : pc.Symbolizer;
if (ps == null)
{
continue;
}
if (featureType == FeatureType.Point)
{
DrawPoint(vertices[index * 2], vertices[(index * 2) + 1], e, ps, g, origTransform);
}
else
{
ShapeRange range = DataSet.ShapeIndices[index];
for (int i = range.StartIndex; i <= range.EndIndex(); i++)
{
DrawPoint(vertices[i * 2], vertices[(i * 2) + 1], e, ps, g, origTransform);
}
}
}
}
}
if (e.Device == null)
{
g.Dispose();
}
else
{
g.Transform = origTransform;
}
}
// This draws the individual point features
private void DrawFeatures(MapArgs e, IEnumerable <int> indices)
{
Graphics g = e.Device ?? Graphics.FromImage(BackBuffer);
Matrix origTransform = g.Transform;
FeatureType featureType = DataSet.FeatureType;
if (!DrawnStatesNeeded)
{
if (Symbology == null || Symbology.Categories.Count == 0)
{
return;
}
FastDrawnState state = new FastDrawnState(false, Symbology.Categories[0]);
IPointCategory pc = state.Category as IPointCategory;
IPointSymbolizer ps = pc?.Symbolizer;
if (ps == null)
{
return;
}
double[] vertices = DataSet.Vertex;
foreach (int index in indices)
{
if (DrawnStates != null && DrawnStates.Length > index && !DrawnStates[index].Visible)
{
continue;
}
if (featureType == FeatureType.Point)
{
DrawPoint(vertices[index * 2], vertices[(index * 2) + 1], e, ps, g, origTransform);
}
else
{
// multi-point
ShapeRange range = DataSet.ShapeIndices[index];
for (int i = range.StartIndex; i <= range.EndIndex(); i++)
{
DrawPoint(vertices[i * 2], vertices[(i * 2) + 1], e, ps, g, origTransform);
}
}
}
}
else
{
FastDrawnState[] states = DrawnStates;
double[] vertices = DataSet.Vertex;
foreach (int index in indices)
{
if (index >= states.Length)
{
break;
}
FastDrawnState state = states[index];
if (!state.Visible || state.Category == null)
{
continue;
}
IPointCategory pc = state.Category as IPointCategory;
if (pc == null)
{
continue;
}
IPointSymbolizer ps = state.Selected ? pc.SelectionSymbolizer : pc.Symbolizer;
if (ps == null)
{
continue;
}
if (featureType == FeatureType.Point)
{
DrawPoint(vertices[index * 2], vertices[(index * 2) + 1], e, ps, g, origTransform);
}
else
{
ShapeRange range = DataSet.ShapeIndices[index];
for (int i = range.StartIndex; i <= range.EndIndex(); i++)
{
DrawPoint(vertices[i * 2], vertices[(i * 2) + 1], e, ps, g, origTransform);
}
}
}
}
if (e.Device == null)
{
g.Dispose();
}
else
{
g.Transform = origTransform;
}
}
// This draws the individual point features
private void DrawFeatures(MapArgs e, IEnumerable <int> indices)
{
Graphics g = e.Device ?? Graphics.FromImage(_backBuffer);
Matrix origTransform = g.Transform;
FeatureType featureType = DataSet.FeatureType;
double minX = e.MinX;
double maxY = e.MaxY;
double dx = e.Dx;
double dy = e.Dy;
if (!DrawnStatesNeeded)
{
if (Symbology == null || Symbology.Categories.Count == 0)
{
return;
}
FastDrawnState state = new FastDrawnState(false, Symbology.Categories[0]);
IPointCategory pc = state.Category as IPointCategory;
IPointSymbolizer ps = null;
if (pc != null && pc.Symbolizer != null)
{
ps = pc.Symbolizer;
}
if (ps == null)
{
return;
}
g.SmoothingMode = ps.Smoothing ? SmoothingMode.AntiAlias : SmoothingMode.None;
double[] vertices = DataSet.Vertex;
foreach (int index in indices)
{
if (DrawnStates != null && DrawnStates.Length > index)
{
if (!DrawnStates[index].Visible)
{
continue;
}
}
if (featureType == FeatureType.Point)
{
Point pt = new Point();
pt.X = Convert.ToInt32((vertices[index * 2] - minX) * dx);
pt.Y = Convert.ToInt32((maxY - vertices[index * 2 + 1]) * dy);
double scaleSize = 1;
if (ps.ScaleMode == ScaleMode.Geographic)
{
scaleSize = e.ImageRectangle.Width / e.GeographicExtents.Width;
}
Matrix shift = origTransform.Clone();
shift.Translate(pt.X, pt.Y);
g.Transform = shift;
ps.Draw(g, scaleSize);
}
else
{
// multi-point
ShapeRange range = DataSet.ShapeIndices[index];
for (int i = range.StartIndex; i <= range.EndIndex(); i++)
{
Point pt = new Point();
pt.X = Convert.ToInt32((vertices[i * 2] - minX) * dx);
pt.Y = Convert.ToInt32((maxY - vertices[i * 2 + 1]) * dy);
double scaleSize = 1;
if (ps.ScaleMode == ScaleMode.Geographic)
{
scaleSize = e.ImageRectangle.Width / e.GeographicExtents.Width;
}
Matrix shift = origTransform.Clone();
shift.Translate(pt.X, pt.Y);
g.Transform = shift;
ps.Draw(g, scaleSize);
}
}
}
}
else
{
FastDrawnState[] states = DrawnStates;
double[] vertices = DataSet.Vertex;
foreach (IPointCategory category in Symbology.Categories)
{
if (category.Symbolizer == null)
{
continue;
}
double scaleSize = 1;
if (category.Symbolizer.ScaleMode == ScaleMode.Geographic)
{
scaleSize = e.ImageRectangle.Width / e.GeographicExtents.Width;
}
Size2D size = category.Symbolizer.GetSize();
if (size.Width * scaleSize < 1 || size.Height * scaleSize < 1)
{
continue;
}
Bitmap normalSymbol = new Bitmap((int)(size.Width * scaleSize) + 1, (int)(size.Height * scaleSize) + 1);
Graphics bg = Graphics.FromImage(normalSymbol);
bg.SmoothingMode = category.Symbolizer.Smoothing ? SmoothingMode.AntiAlias : SmoothingMode.None;
Matrix trans = bg.Transform;
// keenedge:
// added ' * scaleSize ' to fix a problme when ploted using ScaleMode=Geographic. however, it still
// appeared to be shifted up and left by 1 pixel so I also added the one pixel shift to the NW.
// trans.Translate((float)size.Width / 2, (float)size.Height / 2);
trans.Translate(((float)(size.Width * scaleSize) / 2 - 1), (float)(size.Height * scaleSize) / 2 - 1);
bg.Transform = trans;
category.Symbolizer.Draw(bg, 1);
Size2D selSize = category.SelectionSymbolizer.GetSize();
if (selSize.Width * scaleSize < 1 || selSize.Height * scaleSize < 1)
{
continue;
}
Bitmap selectedSymbol = new Bitmap((int)(selSize.Width * scaleSize + 1), (int)(selSize.Height * scaleSize + 1));
Graphics sg = Graphics.FromImage(selectedSymbol);
sg.SmoothingMode = category.SelectionSymbolizer.Smoothing ? SmoothingMode.AntiAlias : SmoothingMode.None;
Matrix trans2 = sg.Transform;
trans2.Translate((float)selSize.Width / 2, (float)selSize.Height / 2);
sg.Transform = trans2;
category.SelectionSymbolizer.Draw(sg, 1);
foreach (int index in indices)
{
FastDrawnState state = states[index];
if (!state.Visible)
{
continue;
}
if (state.Category == null)
{
continue;
}
IPointCategory pc = state.Category as IPointCategory;
if (pc == null)
{
continue;
}
if (pc != category)
{
continue;
}
Bitmap bmp = normalSymbol;
if (state.Selected)
{
bmp = selectedSymbol;
}
if (featureType == FeatureType.Point)
{
Point pt = new Point();
pt.X = Convert.ToInt32((vertices[index * 2] - minX) * dx);
pt.Y = Convert.ToInt32((maxY - vertices[index * 2 + 1]) * dy);
Matrix shift = origTransform.Clone();
shift.Translate(pt.X, pt.Y);
g.Transform = shift;
g.DrawImageUnscaled(bmp, -bmp.Width / 2, -bmp.Height / 2);
}
else
{
ShapeRange range = DataSet.ShapeIndices[index];
for (int i = range.StartIndex; i <= range.EndIndex(); i++)
{
Point pt = new Point();
pt.X = Convert.ToInt32((vertices[i * 2] - minX) * dx);
pt.Y = Convert.ToInt32((maxY - vertices[i * 2 + 1]) * dy);
Matrix shift = origTransform.Clone();
shift.Translate(pt.X, pt.Y);
g.Transform = shift;
g.DrawImageUnscaled(bmp, -bmp.Width / 2, -bmp.Height / 2);
}
}
}
}
}
if (e.Device == null)
{
g.Dispose();
}
else
{
g.Transform = origTransform;
}
}
