private void btnEditColorClass_Click(object sender, EventArgs e)
{
GridColorClass cc = symbolsListView1.UserObject as GridColorClass;
if (cc == null)
{
return;
}
FormGridColorClass dlg = new FormGridColorClass();
dlg.ColorClass = cc;
if (dlg.ShowDialog() == DialogResult.OK)
{
cc.MinValue = dlg.MinValue;
cc.MaxValue = dlg.MaxValue;
cc.Legend = dlg.Label;
symbolsListView1.ValueText =
cc.MinValue.ToString() + " - " + cc.MaxValue.ToString();
symbolsListView1.LegendText =
cc.Legend;
panelGrid.Refresh();
}
}
private void btnAddColorClass_Click(object sender, EventArgs e)
{
FormGridColorClass dlg = new FormGridColorClass();
if (dlg.ShowDialog() == DialogResult.OK)
{
GridColorClass cc = new GridColorClass(
dlg.MinValue, dlg.MaxValue, GraphicsEngine.ArgbColor.White);
cc.Legend = dlg.Label;
_classes.Add(cc);
SimpleFillSymbol symbol = new SimpleFillSymbol();
symbol.OutlineColor = GraphicsEngine.ArgbColor.Transparent;
symbol.Color = cc.Color;
symbolsListView1.addSymbol(
symbol,
new string[] { dlg.MinValue.ToString() + " - " + dlg.MaxValue.ToString(), dlg.Label },
cc
);
panelGrid.Refresh();
}
}
private void btnRemoveColorClass_Click(object sender, EventArgs e)
{
GridColorClass cc = symbolsListView1.UserObject as GridColorClass;
if (cc == null)
{
return;
}
_classes.Remove(cc);
symbolsListView1.RemoveSelected();
panelGrid.Refresh();
}
private void panelGrid_Paint(object sender, PaintEventArgs e)
{
int height = panelGrid.Height - 20;
if (height <= 0 || _max - _min <= 0)
{
return;
}
GridColorClass[] classes = this.GridColorClasses;
for (int y = 0; y < height; y++)
{
double h = _max - (double)y * (_max - _min) / (double)height;
using (Pen pen = new Pen(GridColorClass.FindColor(h, classes).ToGdiColor(), 1))
{
e.Graphics.DrawLine(pen, 1, y + 10, 20, y + 10);
}
}
using (Font font = new Font("Arial", 8))
{
using (SolidBrush brush = new SolidBrush(Color.Black))
{
foreach (GridColorClass cc in _classes)
{
if (String.IsNullOrEmpty(cc.Legend))
{
continue;
}
double h = cc.MaxValue * 0.5 + cc.MinValue * 0.5;
int y = (int)((_max - h) * (double)height / (_max - _min));
e.Graphics.DrawString(cc.Legend, font, brush, 22, y + 5);
}
}
}
}
void symbolsListView1_OnSymbolClicked(ISymbol symbol)
{
if (!(symbol is SimpleFillSymbol))
{
return;
}
GridColorClass cc = symbolsListView1.UserObject as GridColorClass;
if (cc == null)
{
return;
}
ColorDialog dlg = new ColorDialog();
dlg.Color = cc.Color.ToGdiColor();
if (dlg.ShowDialog() == DialogResult.OK)
{
cc.Color = dlg.Color.ToArgbColor();
((SimpleFillSymbol)symbol).Color = cc.Color;
}
panelGrid.Refresh();
}
private void PaintHillShade(int x, int y, int wWidth, int wHeight, int iWidth, int iHeight, double mag, ICancelTracker cancelTracker)
{
if (CancelTracker.Canceled(cancelTracker) || _gDS == null)
{
return;
}
int pixelSpace = 4;
Bitmap bitmap = new Bitmap(iWidth, iHeight + 100, PixelFormat.Format32bppArgb);
BitmapData bitmapData = bitmap.LockBits(new Rectangle(0, 0, iWidth, iHeight + 100), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
OSGeo.GDAL.Band band = null;
try
{
int stride = bitmapData.Stride;
IntPtr buf = bitmapData.Scan0;
List <Color> colors = new List <Color>();
using (band = _gDS.GetRasterBand(1))
{
band.ReadRaster(x, y, wWidth, wHeight,
buf,
iWidth, iHeight, OSGeo.GDAL.DataType.GDT_CFloat32, pixelSpace, stride);
band.Dispose();
}
double cx = _tfw.cellX / mag;
double cy = _tfw.cellY / mag;
Vector3d sun = new Vector3d(_hillShade);
sun.Normalize();
int rowStride = stride / pixelSpace;
Color col = Color.White;
unsafe
{
byte * ptr = (byte *)(bitmapData.Scan0);
float *v = (float *)(bitmapData.Scan0);
for (int i = 0; i < iHeight; i++)
{
if (CancelTracker.Canceled(cancelTracker))
{
return;
}
for (int j = 0; j < iWidth; j++)
{
if ((_hasNoDataVal == 1 && *v == _nodata) ||
(_useIgnoreValue && *v == _ignoreValue))
{
ptr[0] = ptr[1] = ptr[2] = ptr[3] = 0;
}
else
{
double c = *v;
col = GridColorClass.FindColor(c, _colorClasses);
if (!_useHillShade)
{
ptr[0] = (byte)col.B; ptr[1] = (byte)col.G; ptr[2] = (byte)col.R;
ptr[3] = (byte)col.A; // alpha
}
else
{
double c1 = (j < iWidth - 1) ? (*(v + 1)) : c;
double c2 = (i < iHeight - 1) ? (*(v + rowStride)) : c;
c1 = ((_hasNoDataVal != 0 && c1 == _nodata) ||
(_useIgnoreValue && c1 == _ignoreValue)) ? c : c1;
c2 = ((_hasNoDataVal != 0 && c2 == _nodata) ||
(_useIgnoreValue && c2 == _ignoreValue)) ? c : c2;
Vector3d v1 = new Vector3d(cx, 0.0, c1 - c); v1.Normalize();
Vector3d v2 = new Vector3d(0.0, -cy, c2 - c); v2.Normalize();
Vector3d vs = v2 % v1; vs.Normalize();
double h = Math.Min(Math.Max(0.0, sun * vs), 1.0);
//double h = Math.Abs(sun * vs);
double a = col.A;
double r = col.R * h;
double g = col.G * h;
double b = col.B * h;
ptr[0] = (byte)b; ptr[1] = (byte)g; ptr[2] = (byte)r;
ptr[3] = (byte)a; // alpha
}
}
ptr += pixelSpace;
v++;
}
ptr += bitmapData.Stride - (bitmapData.Width) * pixelSpace;
v = (float *)ptr;
}
}
if (bitmap != null)
{
bitmap.UnlockBits(bitmapData);
}
_bitmap = new Bitmap(iWidth, iHeight, PixelFormat.Format32bppArgb);
using (Graphics gr = Graphics.FromImage(_bitmap))
{
gr.DrawImage(bitmap, 0, 0);
}
}
catch { }
finally
{
if (bitmap != null)
{
bitmap.Dispose();
}
}
}
private IRasterPaintContext PaintHillShade(int x, int y, int wWidth, int wHeight, int iWidth, int iHeight, double mag, ICancelTracker cancelTracker)
{
if (CancelTracker.Canceled(cancelTracker) || _gDS == null)
{
return(null);
}
int pixelSpace = 4;
using (var bitmap = GraphicsEngine.Current.Engine.CreateBitmap(iWidth, iHeight + 100, GraphicsEngine.PixelFormat.Rgba32))
{
var bitmapData = bitmap.LockBitmapPixelData(GraphicsEngine.BitmapLockMode.ReadWrite, GraphicsEngine.PixelFormat.Rgba32);
OSGeo_v1.GDAL.Band band = null;
try
{
int stride = bitmapData.Stride;
IntPtr buf = bitmapData.Scan0;
List <ArgbColor> colors = new List <ArgbColor>();
using (band = _gDS.GetRasterBand(1))
{
band.ReadRaster(x, y, wWidth, wHeight,
buf,
iWidth, iHeight, OSGeo_v1.GDAL.DataType.GDT_CFloat32, pixelSpace, stride);
band.Dispose();
}
double cx = _tfw.cellX / mag;
double cy = _tfw.cellY / mag;
Vector3d sun = new Vector3d(_hillShade);
sun.Normalize();
int rowStride = stride / pixelSpace;
ArgbColor col = ArgbColor.White;
unsafe
{
byte * ptr = (byte *)(bitmapData.Scan0);
float *v = (float *)(bitmapData.Scan0);
float floatNodata = (float)_nodata;
for (int i = 0; i < iHeight; i++)
{
if (CancelTracker.Canceled(cancelTracker))
{
return(null);
}
for (int j = 0; j < iWidth; j++)
{
if ((_hasNoDataVal == 1 && *v == floatNodata) ||
(_useIgnoreValue && *v == _ignoreValue))
{
ptr[0] = ptr[1] = ptr[2] = ptr[3] = 0;
}
else
{
double c = *v;
col = GridColorClass.FindColor(c, _colorClasses);
if (!_useHillShade)
{
ptr[0] = col.B; ptr[1] = col.G; ptr[2] = col.R;
ptr[3] = col.A; // alpha
}
else
{
double c1 = (j < iWidth - 1) ? (*(v + 1)) : c;
double c2 = (i < iHeight - 1) ? (*(v + rowStride)) : c;
c1 = ((_hasNoDataVal != 0 && c1 == floatNodata) ||
(_useIgnoreValue && c1 == _ignoreValue)) ? c : c1;
c2 = ((_hasNoDataVal != 0 && c2 == floatNodata) ||
(_useIgnoreValue && c2 == _ignoreValue)) ? c : c2;
Vector3d v1 = new Vector3d(cx, 0.0, c1 - c); v1.Normalize();
Vector3d v2 = new Vector3d(0.0, -cy, c2 - c); v2.Normalize();
Vector3d vs = v2 % v1; vs.Normalize();
double h = Math.Min(Math.Max(0.0, sun * vs), 1.0);
//double h = Math.Abs(sun * vs);
double a = col.A;
double r = col.R * h;
double g = col.G * h;
double b = col.B * h;
ptr[0] = (byte)b; ptr[1] = (byte)g; ptr[2] = (byte)r;
ptr[3] = (byte)a; // alpha
}
}
ptr += pixelSpace;
v++;
}
ptr += bitmapData.Stride - (bitmapData.Width) * pixelSpace;
v = (float *)ptr;
}
}
if (bitmap != null)
{
bitmap.UnlockBitmapPixelData(bitmapData);
bitmapData = null;
}
var contextBitmap = GraphicsEngine.Current.Engine.CreateBitmap(iWidth, iHeight, GraphicsEngine.PixelFormat.Rgba32);
using (var gr = contextBitmap.CreateCanvas())
{
gr.DrawBitmap(bitmap, new GraphicsEngine.CanvasPoint(0, 0));
}
return(new RasterPaintContext(contextBitmap));
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (bitmap != null && bitmapData != null)
{
bitmap.UnlockBitmapPixelData(bitmapData);
}
}
}
}
