//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();
}
