public RgPoint GroundToImage(RgPoint groundPoint)
{
RgPoint imagePoint = new RgPoint();
imagePoint.X = _inverseTransform[0] + _inverseTransform[1] * groundPoint.X +
_inverseTransform[2] * groundPoint.Y;
imagePoint.Y = _inverseTransform[3] + _inverseTransform[4] * groundPoint.X +
_inverseTransform[5] * groundPoint.Y;
return(imagePoint);
}
/// <summary>
/// Transforms a <see cref="RGeos.Geometries.RgPoint"/>.
/// </summary>
/// <param name="p">Point to transform</param>
/// <param name="transform">MathTransform</param>
/// <returns>Transformed Point</returns>
public static RgPoint TransformPoint(RgPoint p, IMathTransform transform)
{
try
{
return(new RgPoint(transform.Transform(p.ToDoubleArray())));
}
catch
{
return(null);
}
}
public PointF ToScreen(RgPoint pt)
{
float ratio = GetRatio(mUnits);
PointF transformedPoint = new PointF((float)pt.X, (float)pt.Y);
transformedPoint.Y = ScreenHeight() - transformedPoint.Y; //将Unit坐标系转换为屏幕坐标系，Y轴反向，此时Y坐标为屏幕坐标系坐标
transformedPoint.Y *= ratio * Zoom; //相对于屏幕原点放大
transformedPoint.X *= ratio * Zoom;
transformedPoint.X += m_panOffset.X + m_dragOffset.X;
transformedPoint.Y += m_panOffset.Y + m_dragOffset.Y;
return(transformedPoint);
}
/// <summary>
/// Converts a Coordinate to Point Text format then Appends it to the writer.
/// </summary>
/// <param name="coordinate">The Coordinate to process.</param>
/// <param name="writer">The output stream writer to Append to.</param>
private static void AppendPointText(RgPoint coordinate, StringWriter writer)
{
if (coordinate == null || coordinate.IsEmpty())
{
writer.Write("EMPTY");
}
else
{
writer.Write("(");
AppendCoordinate(coordinate, writer);
writer.Write(")");
}
}
/// <summary>
/// Creates a Point using the next token in the stream.
/// </summary>
/// <param name="tokenizer">Tokenizer over a stream of text in Well-known Text
/// format. The next tokens must form a <Point Text>.</param>
/// <returns>Returns a Point specified by the next token in
/// the stream.</returns>
/// <remarks>
/// ParseException is thrown if an unexpected token is encountered.
/// </remarks>
private static RgPoint ReadPointText(WktStreamTokenizer tokenizer)
{
RgPoint p = new RgPoint();
string nextToken = GetNextEmptyOrOpener(tokenizer);
if (nextToken == "EMPTY")
{
return(p);
}
p.X = GetNextNumber(tokenizer);
p.Y = GetNextNumber(tokenizer);
GetNextCloser(tokenizer);
return(p);
}
private static RgPoint[] ReadCoordinates(BinaryReader reader, WkbByteOrder byteOrder)
{
// Get the number of points in this linestring.
int numPoints = (int)ReadUInt32(reader, byteOrder);
// Create a new array of coordinates.
RgPoint[] coords = new RgPoint[numPoints];
// Loop on the number of points in the ring.
for (int i = 0; i < numPoints; i++)
{
// Add the coordinate.
coords[i] = new RgPoint(ReadDouble(reader, byteOrder), ReadDouble(reader, byteOrder));
}
return(coords);
}
public List <Feature> GetHitObjects(RgPoint point, double tolerance)
{
List <Feature> selected = new List <Feature>();
if (this.Visible == false)
{
return(null);
}
foreach (Feature drawobject in mGeometries)
{
if (ShapeType == RgEnumShapeType.RgPoint)
{
RgPoint pt = drawobject.Shape as RgPoint;
if (RDistanceMeasure.Dist_Point_to_Point(pt, point) < tolerance)
{
selected.Add(drawobject);
// drawobject.IsSelected = true;
}
}
else if (ShapeType == RgEnumShapeType.RgLineString)
{
LineString lineString = drawobject.Shape as LineString;
if (lineString.PointInObject(point))
{
selected.Add(drawobject);
//drawobject.IsSelected = true;
}
}
else if (ShapeType == RgEnumShapeType.RgPolygon)
{
Polygon polygon = drawobject.Shape as Polygon;
if (!polygon.IsEmpty())
{
if (Geometries.RgTopologicRelationship.IsInPolygon(point, polygon))
{
selected.Add(drawobject);
//drawobject.IsSelected = true;
}
}
}
}
return(selected);
}
/// <summary>
/// Transforms a <see cref="RGeos.Geometries.BoundingBox"/>.
/// </summary>
/// <param name="box">BoundingBox to transform</param>
/// <param name="transform">Math Transform</param>
/// <returns>Transformed object</returns>
public static BoundingBox TransformBox(BoundingBox box, IMathTransform transform)
{
if (box == null)
{
return(null);
}
RgPoint[] corners = new RgPoint[4];
corners[0] = new RgPoint(transform.Transform(box.Min.ToDoubleArray())); //LL
corners[1] = new RgPoint(transform.Transform(box.Max.ToDoubleArray())); //UR
corners[2] = new RgPoint(transform.Transform(new RgPoint(box.Min.X, box.Max.Y).ToDoubleArray())); //UL
corners[3] = new RgPoint(transform.Transform(new RgPoint(box.Max.X, box.Min.Y).ToDoubleArray())); //LR
BoundingBox result = corners[0].GetBoundingBox();
for (int i = 1; i < 4; i++)
{
result = result.Join(corners[i].GetBoundingBox());
}
return(result);
}
/// <summary>
/// Converts a Geometry to <Geometry Tagged Text > format, then Appends it to the writer.
/// </summary>
/// <param name="geometry">The Geometry to process.</param>
/// <param name="writer">The output stream to Append to.</param>
private static void AppendGeometryTaggedText(IGeometry geometry, StringWriter writer)
{
if (geometry == null)
{
throw new NullReferenceException("Cannot write Well-Known Text: geometry was null");
}
;
if (geometry is RgPoint)
{
RgPoint point = geometry as RgPoint;
AppendPointTaggedText(point, writer);
}
else if (geometry is LineString)
{
AppendLineStringTaggedText(geometry as LineString, writer);
}
else if (geometry is Polygon)
{
AppendPolygonTaggedText(geometry as Polygon, writer);
}
else if (geometry is MultiPoint)
{
AppendMultiPointTaggedText(geometry as MultiPoint, writer);
}
else if (geometry is MultiLineString)
{
AppendMultiLineStringTaggedText(geometry as MultiLineString, writer);
}
else if (geometry is MultiPolygon)
{
AppendMultiPolygonTaggedText(geometry as MultiPolygon, writer);
}
else if (geometry is GeometryCollection)
{
AppendGeometryCollectionTaggedText(geometry as GeometryCollection, writer);
}
else
{
throw new NotSupportedException("Unsupported Geometry implementation:" + geometry.GetType().Name);
}
}
/// <summary>
/// 几何对象集合执行的获取捕捉点的方法
/// </summary>
/// <param name="canvas"></param>
/// <param name="point"></param>
/// <param name="runningsnaptypes"></param>
/// <param name="usersnaptype"></param>
/// <returns></returns>
public ISnapPoint SnapPoint(RgPoint point, Type[] runningsnaptypes, Type usersnaptype)
{
for (int i = 0; i < Layers.Count; i++)
{
ILayer lry = Layers[i];
if (lry is FetureLayer)
{
FetureLayer featlyr = lry as FetureLayer;
List <Feature> objects = featlyr.GetHitObjects(point, tolerance);
if (objects.Count == 0)
{
return(null);
}
foreach (Feature obj in objects)
{
IGeometry geo = obj.Shape as IGeometry;
if (geo is RgPoint)
{
RgPoint pt = geo as RgPoint;
if (RDistanceMeasure.Dist_Point_to_Point(pt, point) < tolerance)
{
return(new SnapPointBase(pt, pt));
}
// ISnapPoint snap = obj.SnapPoint(point, objects, runningsnaptypes, usersnaptype);
}
if (geo is LinearRing)
{
}
if (geo is Polygon)
{
}
// ISnapPoint snap = obj.SnapPoint( point, objects, runningsnaptypes, usersnaptype);
//if (snap != null)
// return snap;
}
}
}
return(null);
}
private void btnCreate_Click(object sender, EventArgs e)
{
int row = 0;
bool flag = int.TryParse(txtRows.Text, out row);
int col = 0;
bool flag1 = int.TryParse(txtCols.Text, out col);
double rheight, rwidth;
bool flag3 = double.TryParse(txtRowHeight.Text, out rheight);
bool flag4 = double.TryParse(txtRowWidth.Text, out rwidth);
if (!flag)
{
MessageBox.Show("请输入正确的行数", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
txtRows.Focus();
return;
}
if (!flag1)
{
MessageBox.Show("请输入正确的列数", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
txtCols.Focus();
return;
}
if (!flag3)
{
MessageBox.Show("请输入正确的行高", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
txtRowHeight.Focus();
return;
}
if (!flag4)
{
MessageBox.Show("请输入正确的行宽", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
txtRowWidth.Focus();
return;
}
IMapControl2 mapCtrl = mMapCtrl as IMapControl2;
RGeos.Carto.IMap map = mapCtrl.Map;
if (chkGridPoint.Checked)
{
RGeos.Carto.FetureLayer layer = new RGeos.Carto.FetureLayer();
layer.Name = "GridPoint";
layer.ShapeType = RgEnumShapeType.RgPoint;
map.AddLayer(layer);
double baseX;
bool flag5 = double.TryParse(txtX.Text, out baseX);
double baseY;
bool flag6 = double.TryParse(txtY.Text, out baseY);
for (int i = 0; i < row; i++)
{
for (int j = 0; j < col; j++)
{
RgPoint pt = new RgPoint();
pt.X = baseX + i * rwidth;
pt.Y = baseY + j * rheight;
layer.AddFeature(pt);
}
}
}
if (chkGridLine.Checked)
{
RGeos.Carto.FetureLayer layer = new RGeos.Carto.FetureLayer();
layer.Name = "GridLine";
layer.ShapeType = RgEnumShapeType.RgLineString;
map.AddLayer(layer);
double baseX;
bool flag5 = double.TryParse(txtX.Text, out baseX);
double baseY;
bool flag6 = double.TryParse(txtY.Text, out baseY);
RgPoint ptLowerLeft = new RgPoint();
ptLowerLeft.X = baseX;
ptLowerLeft.Y = baseY;
RgPoint ptLowerRight = new RgPoint();
ptLowerRight.X = baseX + col * rwidth;
ptLowerRight.Y = baseY;
RgPoint ptTopRight = new RgPoint();
ptTopRight.X = baseX + col * rwidth;
ptTopRight.Y = baseY + row * rheight;
RgPoint ptTopLeft = new RgPoint();
ptTopLeft.X = baseX;
ptTopLeft.Y = baseY + row * rheight;
List <RgPoint> ptBounds = new List <RgPoint>();
ptBounds.Add(ptLowerLeft);
ptBounds.Add(ptLowerRight);
ptBounds.Add(ptTopRight);
ptBounds.Add(ptTopLeft);
ptBounds.Add(ptLowerLeft);
LineString lineBounds = new LineString(ptBounds);
layer.AddFeature(lineBounds);
for (int i = 1; i < row; i++)
{
RgPoint ptStart = new RgPoint();
ptStart.X = baseX;
ptStart.Y = baseY + i * rheight;
RgPoint ptEnd = new RgPoint();
ptEnd.X = baseX + col * rwidth;
ptEnd.Y = baseY + i * rheight;
List <RgPoint> pts = new List <RgPoint>();
pts.Add(ptStart);
pts.Add(ptEnd);
LineString line = new LineString(pts);
layer.AddFeature(line);
}
for (int j = 1; j < col; j++)
{
RgPoint ptStart = new RgPoint();
ptStart.X = baseX + j * rwidth;
ptStart.Y = baseY;
RgPoint ptEnd = new RgPoint();
ptEnd.X = baseX + j * rwidth;
ptEnd.Y = baseY + row * rheight;
List <RgPoint> pts = new List <RgPoint>();
pts.Add(ptStart);
pts.Add(ptEnd);
LineString line = new LineString(pts);
layer.AddFeature(line);
}
}
mapCtrl.Refresh();
}
public override void OnMouseUp(int x, int y)
{
if (m_selection != null)
{
List <Feature> SelectFeatures = new List <Feature>();
screenSelRect = m_selection.ScreenRect();
RgPoint lowLeft = mScreenDisplay.DisplayTransformation.ToUnit(new PointF(screenSelRect.Left, screenSelRect.Bottom));
RgPoint upRight = mScreenDisplay.DisplayTransformation.ToUnit(new PointF(screenSelRect.Right, screenSelRect.Top));
BoundingBox box = new BoundingBox(lowLeft, upRight);
//RectangleF selectionRect = m_selection.Selection(m_canvaswrapper);
if (screenSelRect != Rectangle.Empty)
{
// is any selection rectangle. use it for selection
for (int i = 0; i < mMap.Layers.Count; i++)
{
ILayer lyr = mMap.Layers[i];
if (lyr is FetureLayer)
{
Carto.FetureLayer featlyr = lyr as Carto.FetureLayer;
SelectFeatures = featlyr.GetHitObjects(box, m_selection.AnyPoint());
if (SelectFeatures != null)
{
for (int j = 0; j < SelectFeatures.Count; j++)
{
SelectFeatures[j].IsSelected = true;
}
if (mMap.Selection == null)
{
mMap.Selection = new MapSelection();
}
mMap.Selection.SelectedFeatures.AddRange(SelectFeatures);
}
}
}
}
else
{
for (int i = 0; i < mMap.Layers.Count; i++)
{
ILayer lyr = mMap.Layers[i];
if (lyr is FetureLayer)
{
Carto.FetureLayer featlyr = lyr as Carto.FetureLayer;
RgPoint mousepoint = mScreenDisplay.DisplayTransformation.ToUnit(new PointF(x, y));
SelectFeatures = featlyr.GetHitObjects(mousepoint, 0.1);
if (SelectFeatures != null)
{
for (int j = 0; j < SelectFeatures.Count; j++)
{
SelectFeatures[j].IsSelected = true;
}
if (mMap.Selection == null)
{
mMap.Selection = new MapSelection();
}
mMap.Selection.SelectedFeatures.AddRange(SelectFeatures);
}
}
}
}
mMapCtrl.Refresh();
m_selection = null;
}
}
/// <summary>
/// Converts a Coordinate to <Point Tagged Text> format,
/// then Appends it to the writer.
/// </summary>
/// <param name="coordinate">the <code>Coordinate</code> to process</param>
/// <param name="writer">the output writer to Append to</param>
private static void AppendPointTaggedText(RgPoint coordinate, StringWriter writer)
{
writer.Write("POINT ");
AppendPointText(coordinate, writer);
}
public SnapPointBase(IGeometry owner, RgPoint snappoint)
{
m_owner = owner;
m_snappoint = snappoint;
}