//构造偏移点法
private void button7_Click(object sender, EventArgs e)
{
delFeature("point");
IPoint[] points = new IPoint[4];
for (int i = 0; i < 4; i++)
{
points[i] = new PointClass();
}
points[0].PutCoords(0, 0);
points[1].PutCoords(10, 0);
points[2].PutCoords(20, 0);
points[3].PutCoords(30, 0);
IPointCollection polyline = new Polyline();
IGeometryBridge geometryBride = new GeometryEnvironmentClass();
geometryBride.AddPoints(polyline as IPointCollection4, ref points);
IConstructPoint constructionPointRight = new PointClass();
IConstructPoint constructionPointLeft = new PointClass();
constructionPointRight.ConstructOffset(polyline as ICurve, esriSegmentExtension.esriNoExtension, 15, false, 5);
IPoint outPutPoint1 = constructionPointRight as IPoint;
constructionPointLeft.ConstructOffset(polyline as ICurve, esriSegmentExtension.esriNoExtension, 1, false, -5);
IPoint outPutPoint2 = constructionPointLeft as IPoint;
addFeature("point", points[0]);
addFeature("point", points[1]);
addFeature("point", points[2]);
addFeature("point", points[3]);
addFeature("point", outPutPoint1);
addFeature("point", outPutPoint2);
axMapControl1.Refresh();
}
private void queryPointsToolStripMenuItem_Click(object sender, EventArgs e)
{
IPoint point1 = new PointClass();
point1.PutCoords(10, 10);
IPoint point2 = new PointClass();
point2.PutCoords(20, 20);
IPoint[] inputPointArray = new IPoint[2];
inputPointArray[0] = point1;
inputPointArray[1] = point2;
IPointCollection4 pointCollection = new MultipointClass();
IGeometryBridge geometryBridge = new GeometryEnvironmentClass();
geometryBridge.AddPoints(pointCollection, ref inputPointArray);
int index = 0;
IPoint[] outputPointArray = new IPoint[2];
for (int i = 0; i < outputPointArray.Length; i++)
{
outputPointArray[i] = new PointClass();
}
pointCollection.QueryPoint(0, outputPointArray[0]);
//geometryBridge.QueryPoints(pointCollection, index, ref outputPointArray);
for (int i = 0; i < outputPointArray.Length; i++)
{
IPoint currentPoint = outputPointArray[i];
if (currentPoint.IsEmpty == true)
{
System.Windows.Forms.MessageBox.Show("Current point = null");
}
else
{
System.Windows.Forms.MessageBox.Show("X = " + currentPoint.X + ", Y = " + currentPoint.Y);
}
}
}