public List <IPrintPageInfo> CreateIndexPageInfos(IPolygon polygon)
{
List <IPrintPageInfo> pages = new List <IPrintPageInfo>();
IEnvelope pEnvelope = polygon.Envelope;
double width = _mapTemplate.Width * _scale / 100;
double height = _mapTemplate.Height * _scale / 100;
double startX = Math.Floor(polygon.Envelope.XMin / width) * width;
double startY = Math.Floor(polygon.Envelope.YMin / height) * height;
double endX = Math.Ceiling(polygon.Envelope.XMax / width) * width;
double endY = Math.Ceiling(polygon.Envelope.YMax / height) * height;
double X1 = startX;
double Y1 = startY;
double X2 = 0;
double Y2 = 0;
int count = 0;
int col = 0;
int row = 0;
while (Y1 <= endY - height)
{
col++;
row = 0;
X1 = startX;
while (X1 < endX - width)
{
row++;
X2 = X1 + width;
Y2 = Y1 + height;
IEnvelope pPageEnv = new Envelope() as IEnvelope;
pPageEnv.PutCoords(X1, Y1, X2, Y2);
//! 开始检查页面方框和多边形是否有相交，如果没有相交，该多边形就略过去了
ITopologicalOperator topo = polygon as ITopologicalOperator;
IGeometryCollection pGeoCol =
topo.Intersect(pPageEnv, esriGeometryDimension.esriGeometry0Dimension) as IGeometryCollection;
if (pGeoCol == null || pGeoCol.GeometryCount == 0)
{
X1 = X1 + width;
continue;
}
count++;
IPrintPageInfo onePage = new PrintPageInfo();
onePage.Boundary = pPageEnv;
onePage.PageID = count;
onePage.PageName = col.ToString() + "-" + row.ToString();
pages.Add(onePage);
}
Y1 = Y1 + height;
}
foreach (IPrintPageInfo pageInfo in pages)
{
pageInfo.TotalCount = pages.Count;
}
return(pages);
}
public List <IPrintPageInfo> CreateStripMapPageInfos(IPolyline stripLine)
{
IPolyline pPolyline;
IPoint pCenterPoint;
IPolygon pCirclePoly;
IPolygon pGridPoly;
IConstructCircularArc pCircularArc;
ISegmentCollection pSegmentCollection;
ITopologicalOperator pTopoOpt;
IGeometryCollection pGeoCol;
IPoint pIntersectPoint;
ICurve pArc;
IPoint pIntersectPointPrev;
bool bFirstRun;
int lLoop2;
double dHighest = 0;
int lHighestRef;
double dHighestPrev;
ICurve pCurve;
ILine pLine;
IPolyline pPLine;
bool bContinue;
bool bReducedRadius;
double dGridAngle;
double dHighestThisTurn;
int lCounter = 0;
List <IPrintPageInfo> pages = new List <IPrintPageInfo>();
pPolyline = stripLine;
pCenterPoint = pPolyline.FromPoint;
double m_GridWidth = _mapTemplate.Width * _scale / 100.0;
double m_GridHeight = _mapTemplate.Height * _scale / 100.0;
double dCircleRadius;
List <double> colIntersects = new List <double>();
double dIntersect;
dHighestPrev = -1;
bFirstRun = true;
pArc = pPolyline;
bContinue = false;
bool isLoop1 = true;
object missing = Missing.Value;
do
{
if (bFirstRun)
{
dCircleRadius = m_GridWidth / 2.0;
}
else
{
dCircleRadius = m_GridWidth;
}
bReducedRadius = false;
do
{
//! 创建搜索圆
pCircularArc = new CircularArc() as IConstructCircularArc;
pCircularArc.ConstructCircle(pCenterPoint, dCircleRadius, false);
pCirclePoly = new Polygon() as IPolygon;
pSegmentCollection = pCirclePoly as ISegmentCollection;
pSegmentCollection.AddSegment(pCircularArc as ISegment, ref missing, ref missing);
pTopoOpt = pPolyline as ITopologicalOperator;
pGeoCol = new GeometryBag() as IGeometryCollection;
pGeoCol = pTopoOpt.Intersect(pCirclePoly, esriGeometryDimension.esriGeometry0Dimension) as IGeometryCollection;
if (pGeoCol.GeometryCount == 0)
{
//! 需要检查，没有交点的的时候的处理
return(null);
}
pArc = pPolyline;
lHighestRef = -1;
dHighestThisTurn = 102;
for (lLoop2 = 0; lLoop2 < pGeoCol.GeometryCount; lLoop2++)
{
pIntersectPoint = pGeoCol.Geometry[lLoop2] as IPoint;
dIntersect = ReturnPercentageAlong(pPolyline, pIntersectPoint);
if (dIntersect > (dHighestPrev * 1.001) && dIntersect < dHighestThisTurn)
{
dHighest = dIntersect;
dHighestThisTurn = dIntersect;
lHighestRef = lLoop2;
}
}
if (lHighestRef < 0)
{
dHighest = 101;
pIntersectPoint = IntersectPointExtendedTo(pPolyline, pCirclePoly);
pIntersectPointPrev = pCenterPoint;
}
else
{
pIntersectPoint = pGeoCol.Geometry[lHighestRef] as IPoint;
if (bFirstRun)
{
pIntersectPointPrev = new Point();
pIntersectPointPrev.PutCoords(pCenterPoint.X - (pIntersectPoint.X - pCenterPoint.X),
pCenterPoint.Y - (pIntersectPoint.Y - pCenterPoint.Y));
}
else
{
pIntersectPointPrev = pCenterPoint;
}
}
if (bReducedRadius)
{
IPolyline pTmpPLine;
IPolygon pTmpCPoly;
IPoint pTmpIntPoint;
pCircularArc = new CircularArc() as IConstructCircularArc;
if (bFirstRun)
{
pCircularArc.ConstructCircle(pCenterPoint, m_GridWidth / 2.0, false);
}
else
{
pCircularArc.ConstructCircle(pCenterPoint, m_GridWidth, false);
}
pTmpCPoly = new Polygon() as IPolygon;
pSegmentCollection = pTmpCPoly as ISegmentCollection;
pSegmentCollection.AddSegment((ISegment)pCircularArc, ref missing, ref missing);
pTmpPLine = new Polyline() as IPolyline;
pTmpPLine.FromPoint = pIntersectPointPrev;
pTmpPLine.ToPoint = pIntersectPoint;
pTmpIntPoint = IntersectPointExtendedTo(pTmpPLine, pTmpCPoly);
CreateAngledGridPolygon(pIntersectPointPrev, pTmpIntPoint, out pGridPoly, out dGridAngle);
}
else
{
CreateAngledGridPolygon(pIntersectPointPrev, pIntersectPoint, out pGridPoly, out dGridAngle);
}
pTopoOpt = pGridPoly as ITopologicalOperator;
pGeoCol = new GeometryBag() as IGeometryCollection;
pGeoCol = pTopoOpt.Intersect(pPolyline, esriGeometryDimension.esriGeometry0Dimension) as IGeometryCollection;
bContinue = true;
if (pGeoCol.GeometryCount > 2)
{
colIntersects = new List <double>();
for (lLoop2 = 2; lLoop2 < pGeoCol.GeometryCount; lLoop2++)
{
colIntersects.Add(ReturnPercentageAlong(pArc, pGeoCol.Geometry[lLoop2] as IPoint));
}
for (lLoop2 = 0; lLoop2 < colIntersects.Count; lLoop2++)
{
if (colIntersects[lLoop2] > (dHighestPrev * 1.001) &&
colIntersects[lLoop2] < (dHighestPrev * 0.999))
{
bContinue = false;
dHighest = dHighestPrev;
dCircleRadius = dCircleRadius - m_GridWidth * 0.1;
bReducedRadius = true;
if (dCircleRadius < 0)
{
bContinue = true;
break;
}
}
}
}
if (bContinue && bReducedRadius)
{
double dTmpHighest;
pArc = pPolyline;
lHighestRef = -1;
dTmpHighest = -1;
for (lLoop2 = 0; lLoop2 < pGeoCol.GeometryCount; lLoop2++)
{
pIntersectPoint = pGeoCol.Geometry[lLoop2] as IPoint;
dIntersect = ReturnPercentageAlong(pArc, pIntersectPoint);
if (dIntersect > dTmpHighest)
{
dTmpHighest = dIntersect;
lHighestRef = lLoop2;
}
}
if (lHighestRef >= 0)
{
pIntersectPoint = pGeoCol.Geometry[lHighestRef] as IPoint;
}
dHighest = dTmpHighest;
}
} while (!bContinue);
bFirstRun = false;
dHighestPrev = dHighest;
lCounter++;
IPrintPageInfo page = new PrintPageInfo();
page.Boundary = pGridPoly;
page.PageID = lCounter;
page.Angle = dGridAngle;
page.PageName = "带状图(" + lCounter.ToString() + ")";
page.Scale = _scale;
pages.Add(page);
pCenterPoint = pIntersectPoint;
} while (dHighest < 100);
foreach (IPrintPageInfo pageInfo in pages)
{
pageInfo.TotalCount = pages.Count;
}
return(pages);
}
