private unsafe void DrawContour(IDrawArgs drawArgs, ContourLine cntLine, ContourClass cntClass, ICanvas canvas)
{
if (!cntClass.IsDisplay)
{
return;
}
ICoordinateTransform tran = canvas.CoordTransform;
int nCount = cntLine.Count;
PointF[] pts = new PointF[nCount];
GCHandle dstHandle = GCHandle.Alloc(pts, GCHandleType.Pinned);
GCHandle srcHandle = GCHandle.Alloc(cntLine.Points, GCHandleType.Pinned);
try
{
MemoryCopy(dstHandle.AddrOfPinnedObject(), srcHandle.AddrOfPinnedObject(), nCount << _pointfSize); // nCount * sizeof(PointF)
QuickTransform quickTran = drawArgs.QuickTransformArgs;
fixed(PointF *ptr0 = pts)
{
PointF *ptr = ptr0;
for (int i = 0; i < nCount; i++, ptr++)
{
quickTran.Transform(ptr);
}
}
Graphics g = drawArgs.Graphics as Graphics;
//
if (_isUseCurveRender)
{
g.DrawCurve(cntClass.Pen, pts, _tension);
}
else
{
_grahpicPath.Reset();
_grahpicPath.AddLines(pts);
g.DrawPath(cntClass.Pen, _grahpicPath);
}
//
if (_isLabel)
{
if (_isCheckConflicting)
{
if (_conflictor.IsConflicted(pts[0], cntClass.LabelBuffer.Size))
{
return;
}
_conflictor.HoldPosition(pts[0], cntClass.LabelBuffer.Size);
}
g.DrawImageUnscaled(cntClass.LabelBuffer, (int)pts[0].X, (int)pts[0].Y);
}
}
finally
{
dstHandle.Free();
srcHandle.Free();
}
}
private void ParseLine()
{
if (_lastPoint != null)
{
var lineObj = new ContourLine {
Begin = _lastPoint, End = _point
};
_contour.Objects.Add(lineObj);
}
}
// Use this for initialization
void Start()
{
vertices = new List <Vector3>();
objs = new List <GameObject>();
triangles = new List <Triangle>();
contourLine = new ContourLine[4];
for (int i = 0; i < 4; i++)
{
contourLine[i] = new ContourLine();
}
GetVertices();
}
private void DoGenerateContourLines(ICanvas canvas, double resX, double resY, frmPointContour.ContourItem[] contourItems, bool isNeedDisplay, bool isNeedLabel, IDW_Interpolation interpolate, string shpFileName)
{
IProgressMonitor progress = _smartSession.ProgressMonitorManager.DefaultProgressMonitor;
try
{
progress.Reset("正在生成等值线...", 100);
progress.Start(false);
ContourGenerateTool tool = new ContourGenerateTool();
double[] cvs = ToContourValues(contourItems);
ContourLine[] cntLines = tool.Generate(resX, resY, enumDataType.Float, cvs, interpolate, (idx, tip) => { progress.Boost(idx, tip); });
if (cntLines == null || cntLines.Length == 0)
{
MsgBox.ShowInfo("不存在符合指定条件的等值线！");
return;
}
double dMinX = interpolate.CoordPointXArr.Min();
double dMaxY = interpolate.CoordPointYArr.Max();
for (int i = 0; i < cntLines.Count(); i++)
{
ContourLine cntLine = cntLines[i];
ContourLine newCntLine = new ContourLine(cntLine.ContourValue);
PointF[] pts = cntLine.Points;
for (int j = 0; j < pts.Count(); j++)
{
pts[j].X = Convert.ToSingle(dMinX + resX * pts[j].X);
pts[j].Y = Convert.ToSingle(dMaxY - resY * pts[j].Y);
}
newCntLine.AddPoints(pts);
newCntLine.UpdateEnvelope();
cntLines[i] = newCntLine;
}
if (shpFileName != null)
{
TryExport2ShapeFile(canvas, cntLines, shpFileName, progress, isNeedDisplay);
}
if (isNeedDisplay)
{
TryDisplay(cntLines, contourItems, isNeedLabel);
}
}
finally
{
progress.Finish();
}
}
private unsafe void Project(ContourLine cntLine, ICanvas canvas)
{
ICoordinateTransform tran = canvas.CoordTransform;
if (tran == null)
{
return;
}
int nCount = cntLine.Count;
fixed(PointF *ptr0 = cntLine.Points)
{
PointF *ptr = ptr0;
for (int i = 0; i < nCount; i++, ptr++)
{
tran.Raster2Prj(ptr);
}
}
cntLine.UpdateEnvelope();
}
private unsafe Feature GetFeature(ContourLine cntLine, ICanvas canvas, int OID)
{
int ptCount = cntLine.Count;
ShapePoint[] pts = new ShapePoint[ptCount];
fixed(PointF *ptr0 = cntLine.Points)
{
PointF *ptr = ptr0;
for (int i = 0; i < ptCount; i++, ptr++)
{
double geoX, geoY;
canvas.CoordTransform.Prj2Geo(ptr->X, ptr->Y, out geoX, out geoY);
pts[i] = new ShapePoint(geoX, geoY);
}
}
ShapeLineString ring = new ShapeLineString(pts);
ShapePolyline ply = new ShapePolyline(new ShapeLineString[] { ring });
Feature fet = new Feature(OID, ply, new string[] { "Contour" }, new string[] { cntLine.ContourValue.ToString() }, null);
return(fet);
}
private unsafe Feature GetFeature(ContourLine cntLine, double resX, double resY,
double minX, double maxY, int OID)
{
int ptCount = cntLine.Count;
ShapePoint[] pts = new ShapePoint[ptCount];
fixed(PointF *ptr0 = cntLine.Points)
{
PointF *ptr = ptr0;
for (int i = 0; i < ptCount; i++, ptr++)
{
ptr->X = (float)(ptr->X * resX + minX);
ptr->Y = (float)(maxY - ptr->Y * resY);
pts[i] = new ShapePoint(ptr->X, ptr->Y);
}
}
ShapeLineString ring = new ShapeLineString(pts);
ShapePolyline ply = new ShapePolyline(new ShapeLineString[] { ring });
Feature fet = new Feature(OID, ply, new string[] { "Contour" }, new string[] { cntLine.ContourValue.ToString() }, null);
return(fet);
}
