//绘制单个点操作
public void DrawPoint(IActiveView activeView, IPoint p, bool red)
{
if (activeView == null)
{
return;
}
ESRI.ArcGIS.Display.IScreenDisplay screenDisplay = activeView.ScreenDisplay;
screenDisplay.StartDrawing(screenDisplay.hDC, (System.Int16)ESRI.ArcGIS.Display.esriScreenCache.esriNoScreenCache);
ESRI.ArcGIS.Display.ISimpleMarkerSymbol simpleMarkerSymbol = new ESRI.ArcGIS.Display.SimpleMarkerSymbolClass();
simpleMarkerSymbol.Style = ESRI.ArcGIS.Display.esriSimpleMarkerStyle.esriSMSCross;
simpleMarkerSymbol.Size = 15;
if (red)
{
simpleMarkerSymbol.Color = redColor;
}
else
{
simpleMarkerSymbol.Color = greenColor;
}
ESRI.ArcGIS.Display.ISymbol symbol = simpleMarkerSymbol as ESRI.ArcGIS.Display.ISymbol; // Dynamic cast.
screenDisplay.SetSymbol(symbol);
ESRI.ArcGIS.Display.IDisplayTransformation displayTransformation = screenDisplay.DisplayTransformation;
screenDisplay.DrawPoint(p);
screenDisplay.FinishDrawing();
}
private void SetupDeviceRatio(int hDC, ESRI.ArcGIS.Display.IDisplayTransformation displayTransform)
{
if (displayTransform != null)
{
if (displayTransform.Resolution != 0)
{
m_dDeviceRatio = displayTransform.Resolution / 72;
// Check the ReferenceScale of the display transformation. If not zero, we need to
// adjust the Size, XOffset and YOffset of the Symbol we hold internally before drawing.
if (displayTransform.ReferenceScale != 0)
m_dDeviceRatio = m_dDeviceRatio * displayTransform.ReferenceScale / displayTransform.ScaleRatio;
}
}
else
{
// If we dont have a displaytransformation, calculate the resolution
// from the actual device.
if (hDC != 0)
{
// Get the resolution from the device context hDC.
m_dDeviceRatio = System.Convert.ToDouble(Utility.GetDeviceCaps(hDC, Utility.LOGPIXELSX)) / 72;
}
else
{
// If invalid hDC assume we're drawing to the screen.
m_dDeviceRatio = 1 / (Utility.TwipsPerPixelX() / 20); // 1 Point = 20 Twips.
}
}
}
private void Terminate()
{
// Which variables do we really need to dereference here, just the transformation,
// or any other globals as well??
m_trans = null;
m_colorTop = null;
m_colorLeft = null;
m_colorRight = null;
m_colorBorder = null;
}
private double PointsToMap(ESRI.ArcGIS.Geometry.ITransformation displayTransform, double dPointSize)
{
double tempPointsToMap = 0;
ESRI.ArcGIS.Display.IDisplayTransformation tempTransform = null;
if (displayTransform == null)
tempPointsToMap = dPointSize * m_dDeviceRatio;
else
{
tempTransform = (IDisplayTransformation)displayTransform;
tempPointsToMap = tempTransform.FromPoints(dPointSize);
}
return tempPointsToMap;
}
protected override void OnMouseDown(MouseEventArgs arg)
{
IMap map;
IPoint clickedPoint = dockableDEMWindow.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(arg.X, arg.Y);
map = dockableDEMWindow.ActiveMap;
IActiveView activeView = (IActiveView)map;
IRubberBand rubberEnv = new RubberEnvelopeClass();
IGeometry geom = rubberEnv.TrackNew(activeView.ScreenDisplay, null);
IArea area = (IArea)geom;
//Extra logic to cater for the situation where the user simply clicks a point on the map
//or where envelope is so small area is zero
if ((geom.IsEmpty == true) || (area.Area == 0))
{
//create a new envelope
IEnvelope tempEnv = new EnvelopeClass();
//create a small rectangle
ESRI.ArcGIS.esriSystem.tagRECT RECT = new tagRECT();
RECT.bottom = 0;
RECT.left = 0;
RECT.right = 5;
RECT.top = 5;
//transform rectangle into map units and apply to the tempEnv envelope
ESRI.ArcGIS.Display.IDisplayTransformation dispTrans = activeView.ScreenDisplay.DisplayTransformation;
dispTrans.TransformRect(tempEnv, ref RECT, 4); //4 = esriDisplayTransformationEnum.esriTransformToMap)
tempEnv.CenterAt(clickedPoint);
geom = (IGeometry)tempEnv;
}
//Set the spatial reference of the search geometry to that of the Map
ISpatialReference spatialReference = map.SpatialReference;
geom.SpatialReference = spatialReference;
dockableDEMWindow.SelectTilesByArea(geom);
//map.SelectByShape(geom, null, false);
//activeView.PartialRefresh(esriViewDrawPhase.esriViewGeoSelection, null, activeView.Extent);
if (arg.Button == System.Windows.Forms.MouseButtons.Left)
{
dockableDEMWindow?.ArcMap_OnMouseDown(arg.X, arg.Y);
}
}
private void QueryBoundsFromGeom(int hDC, ref ESRI.ArcGIS.Display.IDisplayTransformation transform, ref ESRI.ArcGIS.Geometry.IPolygon boundary, ref ESRI.ArcGIS.Geometry.IPoint point)
{
// Calculate Size, XOffset and YOffset of the shape in Map units.
double dMapXOffset = 0;
double dMapSize = 0;
double dMapYOffset = 0;
dMapSize = PointsToMap(transform, m_dSize);
if (m_dXOffset != 0)
dMapXOffset = PointsToMap(transform, m_dXOffset);
if (m_dYOffset != 0)
dMapYOffset = PointsToMap(transform, m_dYOffset);
point.PutCoords(point.X + dMapXOffset, point.Y + dMapYOffset);
// Set up the device ratio.
SetupDeviceRatio(hDC, transform);
ESRI.ArcGIS.Geometry.IPointCollection ptColl = null;
ESRI.ArcGIS.Geometry.ISegmentCollection segColl = null;
double dVal = 0; // dVal is the measurement of the short side of a Triangles are based on.
double dRad = 0;
ptColl = (IPointCollection)boundary;
segColl = (ISegmentCollection)boundary;
dRad = dMapSize / 2;
dVal = System.Math.Sqrt((dRad * dRad) / 2);
object missing = System.Reflection.Missing.Value;
ptColl.AddPoint(Utility.CreatePoint(point.X + dVal, point.Y - dVal), ref missing, ref missing);
ptColl.AddPoint(Utility.CreatePoint(point.X - dVal, point.Y - dVal), ref missing, ref missing);
ptColl.AddPoint(Utility.CreatePoint(point.X - dVal, point.Y + dVal), ref missing, ref missing);
IPoint p = ptColl.get_Point(0);
segColl.AddSegment((ISegment)Utility.CreateCircArc(point, ptColl.get_Point(2), ref p), ref missing, ref missing);
// Account for rotation also.
ESRI.ArcGIS.Geometry.ITransform2D trans2D = null;
if ((m_dAngle + m_dMapRotation) != 0)
{
trans2D = boundary as ITransform2D;
trans2D.Rotate(point, Utility.Radians(m_dAngle + m_dMapRotation));
}
}
private void InitializeMembers()
{
// Set up default values as far as possible.
m_lhDC = 0;
m_lOldPen = 0;
m_lPen = 0;
m_lOldBrush = 0;
m_lBrushTop = 0;
m_lBrushLeft = 0;
m_lBrushRight = 0;
m_dDeviceRadius = 0;
m_trans = null;
// LogoMarkerSymbol custom property defaults.
IColor color = null;
color = (IColor)ESRI.ArcGIS.ADF.Converter.ToRGBColor(Color.Red);
m_colorTop = ((IClone)color).Clone() as IColor;
color = (IColor)ESRI.ArcGIS.ADF.Converter.ToRGBColor(Color.OrangeRed);
m_colorLeft = ((IClone)color).Clone() as IColor;
color = (IColor)ESRI.ArcGIS.ADF.Converter.ToRGBColor(Color.Pink);
m_colorRight = ((IClone)color).Clone() as IColor;
color = (IColor)ESRI.ArcGIS.ADF.Converter.ToRGBColor(Color.Black);
m_colorBorder = ((IClone)color).Clone() as IColor;
// ISymbol property defaults.
m_lROP2 = esriRasterOpCode.esriROPCopyPen;
// IMarkerSymbol property defaults.
m_dSize = 10;
m_dAngle = 0;
m_dXOffset = 0;
m_dYOffset = 0;
// ISymbolRotation property defaults.
m_bRotWithTrans = true;
}
//绘制线操作
public void DrawLine(IActiveView activeView, IPoint fromP, IPoint toP)
{
if (activeView == null)
{
return;
}
IPolyline polyline = new PolylineClass();
polyline.FromPoint = fromP;
polyline.ToPoint = toP;
ESRI.ArcGIS.Display.IScreenDisplay screenDisplay = activeView.ScreenDisplay;
screenDisplay.StartDrawing(screenDisplay.hDC, (System.Int16)ESRI.ArcGIS.Display.esriScreenCache.esriNoScreenCache);
ILineSymbol lineSymbol = new SimpleLineSymbolClass();
lineSymbol.Color = blackColor;
lineSymbol.Width = 1;
ESRI.ArcGIS.Display.ISymbol symbol = lineSymbol as ESRI.ArcGIS.Display.ISymbol; // Dynamic cast.
screenDisplay.SetSymbol(symbol);
ESRI.ArcGIS.Display.IDisplayTransformation displayTransformation = screenDisplay.DisplayTransformation;
IGeometry pGeo = polyline;
screenDisplay.DrawPolyline(pGeo);
screenDisplay.FinishDrawing();
}
public void DrawPoint(ESRI.ArcGIS.Carto.IActiveView activeView, System.Int32 x, System.Int32 y)
{
if (activeView == null)
{
return;
}
ESRI.ArcGIS.Display.IScreenDisplay screenDisplay = activeView.ScreenDisplay;
// Constant
screenDisplay.StartDrawing(screenDisplay.hDC, (System.Int16)ESRI.ArcGIS.Display.esriScreenCache.esriNoScreenCache); // Explicit Cast
ESRI.ArcGIS.Display.ISimpleMarkerSymbol simpleMarkerSymbol = new ESRI.ArcGIS.Display.SimpleMarkerSymbolClass();
ESRI.ArcGIS.Display.ISymbol symbol = simpleMarkerSymbol as ESRI.ArcGIS.Display.ISymbol; // Dynamic Cast
screenDisplay.SetSymbol(symbol);
ESRI.ArcGIS.Display.IDisplayTransformation displayTransformation = screenDisplay.DisplayTransformation;
// x and y are in device coordinates
ESRI.ArcGIS.Geometry.IPoint point = displayTransformation.ToMapPoint(x, y);
screenDisplay.DrawPoint(point);
screenDisplay.FinishDrawing();
}
private void Terminate()
{
// Which variables do we really need to dereference here, just the transformation,
// or any other globals as well??
m_trans = null;
m_colorTop = null;
m_colorLeft = null;
m_colorRight = null;
m_colorBorder = null;
}
private void InitializeMembers()
{
// Set up default values as far as possible.
m_lhDC = 0;
m_lOldPen = 0;
m_lPen = 0;
m_lOldBrush = 0;
m_lBrushTop = 0;
m_lBrushLeft = 0;
m_lBrushRight = 0;
m_dDeviceRadius = 0;
m_trans = null;
// LogoMarkerSymbol custom property defaults.
IColor color = null;
color = (IColor)ESRI.ArcGIS.ADF.Converter.ToRGBColor(Color.Red);
m_colorTop = ((IClone)color).Clone() as IColor;
color = (IColor)ESRI.ArcGIS.ADF.Converter.ToRGBColor(Color.OrangeRed);
m_colorLeft = ((IClone)color).Clone() as IColor;
color = (IColor)ESRI.ArcGIS.ADF.Converter.ToRGBColor(Color.Pink);
m_colorRight = ((IClone)color).Clone() as IColor;
color = (IColor)ESRI.ArcGIS.ADF.Converter.ToRGBColor(Color.Black);
m_colorBorder = ((IClone)color).Clone() as IColor;
// ISymbol property defaults.
m_lROP2 = esriRasterOpCode.esriROPCopyPen;
// IMarkerSymbol property defaults.
m_dSize = 10;
m_dAngle = 0;
m_dXOffset = 0;
m_dYOffset = 0;
// ISymbolRotation property defaults.
m_bRotWithTrans = true;
}
