GlobeControl画的类似Google Earth中的网格线

 

GlobeControl画的类似Google Earth中的网格线

IGraphicsContainer3D pGCon3D = GC1.GlobeDisplay.Scene.BasicGraphicsLayer as IGraphicsContainer3D;

            IRgbColor pColor = new RgbColorClass();

            pColor.Green = 255;

            ISimpleLineSymbol pSimpleLineSymbol = new SimpleLineSymbolClass();

            pSimpleLineSymbol.Color = pColor;

            pSimpleLineSymbol.Width = 3;

            ILineElement pLineElement = new LineElementClass();

            pLineElement.Symbol = pSimpleLineSymbol;

 

            for (int N = 1; N <= 7; N++)

            {

                for (int j = 0; j <= 360; j += 10)

                {

                    for (int i = 0; i <= 360; i += 10)

                    {

                        switch (N)

                        {

                            case 1:

                                {

                                   

                                    IPoint pt1 = new PointClass();

                                    pt1.PutCoords(i, j);

                                    pt1.Z = 100000;

                                    IPoint pt2 = new PointClass();

                                    pt2.PutCoords(i, j);

                                    pt2.Z = 100000;

 

                                    ILine pLine = new LineClass();

                                    pLine.PutCoords(pt1, pt2);

                                    object pBefore = Type.Missing;

                                    object pAfter = Type.Missing;

                                    m_polyline.AddSegment((ISegment)pLine, ref pBefore, ref pAfter);

                                   

                                }

                                break;

                            case 2:

                                {

                                    if (j == 0)

                                    {

                                        IPoint pt1 = new PointClass();

                                        pt1.PutCoords(0, i);

                                        pt1.Z = 100000;

                                        IPoint pt2 = new PointClass();

                                        pt2.PutCoords(0, i);

                                        pt2.Z = 100000;

 

                                        ILine pLine = new LineClass();

                                        pLine.PutCoords(pt1, pt2);

                                        object pBefore = Type.Missing;

                                        object pAfter = Type.Missing;

                                        TropicOfCancer.AddSegment((ISegment)pLine, ref pBefore, ref pAfter);       //本初子午线

                                    }

                                    else

                                    {

                                        IPoint pt1 = new PointClass();

                                        pt1.PutCoords(j, i);

                                        pt1.Z = 100000;

                                        IPoint pt2 = new PointClass();

                                        pt2.PutCoords(j, i);

                                        pt2.Z = 100000;

 

                                        ILine pLine = new LineClass();

                                        pLine.PutCoords(pt1, pt2);

                                        object pBefore = Type.Missing;

                                        object pAfter = Type.Missing;

                                        m_polyline.AddSegment((ISegment)pLine, ref pBefore, ref pAfter);            //经线

                                    }

                                }

                                break;

                            case 3:

                                {

                                    IPoint pt1 = new PointClass();

                                   pt1.PutCoords(i, -23.5);

                                    pt1.Z = 100000;

                                    IPoint pt2 = new PointClass();

                                    pt2.PutCoords(i, -23.5);

                                    pt2.Z = 100000;

 

                                    ILine pLine = new LineClass();

                                    pLine.PutCoords(pt1, pt2);

                                    object pBefore = Type.Missing;

                                    object pAfter = Type.Missing;

                                    TropicOfCancer.AddSegment((ISegment)pLine, ref pBefore, ref pAfter);       //南回归线

                                }

                                break;

                            case 4:

                                {

                                    IPoint pt1 = new PointClass();

                                    pt1.PutCoords(i, 23.5);

                                    pt1.Z = 100000;

                                    IPoint pt2 = new PointClass();

                                    pt2.PutCoords(i, 23.5);

                                    pt2.Z = 100000;

 

                                    ILine pLine = new LineClass();

                                    pLine.PutCoords(pt1, pt2);

                                    object pBefore = Type.Missing;

                                    object pAfter = Type.Missing;

                                    TropicOfCancer.AddSegment((ISegment)pLine, ref pBefore, ref pAfter);       //北回归线

                                }

                                break;

                            case 5:

                                {

                                    IPoint pt1 = new PointClass();

                                    pt1.PutCoords(i, 65.56666666666666);

                                    pt1.Z = 100000;

                                    IPoint pt2 = new PointClass();

                                    pt2.PutCoords(i, 65.56666666666666);

                                    pt2.Z = 100000;

 

                                    ILine pLine = new LineClass();

                                    pLine.PutCoords(pt1, pt2);

                                    object pBefore = Type.Missing;

                                    object pAfter = Type.Missing;

                                    TropicOfCancer.AddSegment((ISegment)pLine, ref pBefore, ref pAfter);       //北极圈

                                }

                                break;

                            case 6:

                                {

                                    IPoint pt1 = new PointClass();

                                    pt1.PutCoords(i, -65.56666666666666);

                                    pt1.Z = 100000;

                                    IPoint pt2 = new PointClass();

                                    pt2.PutCoords(i, -65.56666666666666);

                                    pt2.Z = 100000;

 

                                    ILine pLine = new LineClass();

                                    pLine.PutCoords(pt1, pt2);

                                    object pBefore = Type.Missing;

                                    object pAfter = Type.Missing;

                                    TropicOfCancer.AddSegment((ISegment)pLine, ref pBefore, ref pAfter);       //南极圈

                                }

                                break;

                            case 7:

                                {

                                    IPoint pt1 = new PointClass();

                                    pt1.PutCoords(i, 0);

                                    pt1.Z = 100000;

                                    IPoint pt2 = new PointClass();

                                    pt2.PutCoords(i, 0);

                                    pt2.Z = 100000;

 

                                    ILine pLine = new LineClass();

                                    pLine.PutCoords(pt1, pt2);

                                    object pBefore = Type.Missing;

                                    object pAfter = Type.Missing;

                                    TropicOfCancer.AddSegment((ISegment)pLine, ref pBefore, ref pAfter);       //赤道

                                }

                                break;

                        }

                       

                    }

                }

            }

            IGeometry geometry = (IGeometry)m_polyline;

            IElement pElement = new LineElementClass();

            pElement.Geometry = geometry;

            IGeometry pTropicOfCancerGeometry = (IGeometry)TropicOfCancer;

            IElement pTropicOfCancerElement = (IElement)pLineElement;

            pTropicOfCancerElement.Geometry = pTropicOfCancerGeometry;

            pGCon3D.DeleteAllElements();

            pGCon3D.AddElement(pElement);

            pGCon3D.AddElement(pTropicOfCancerElement);

            GC1.GlobeDisplay.RefreshViewers();

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