SkylineGlobe Android 开发 面积计算示例代码

package com.skyline.terraexplorer.tools;

import android.os.Handler;
import android.os.Looper;

import com.skyline.teapi.*;
import com.skyline.teapi.ISGWorld.OnAnalysisProgressListener;
import com.skyline.teapi.ISGWorld.OnLButtonUpListener;
import com.skyline.terraexplorer.R;
import com.skyline.terraexplorer.TEApp;
import com.skyline.terraexplorer.models.MenuEntry;
import com.skyline.terraexplorer.models.TEUnits;
import com.skyline.terraexplorer.models.UI;
import com.skyline.terraexplorer.views.ToolContainer.CloseReason;

public class AreaTool extends ProgressTool implements OnLButtonUpListener, OnAnalysisProgressListener {

private double groundArea;
private String toolContainerText;

@Override
public MenuEntry getMenuEntry() {
return MenuEntry.createFor(this, R.string.mm_analyze_area, R.drawable.area,MenuEntry.MenuEntryAnalyze(), 20);
}

private void startDrawPolygon()
{
// start draw polygon
ISGWorld.getInstance().getCommand().Execute(1012, 5);

// get object
String objectId = (String)ISGWorld.getInstance().GetParam(7200);
ITerrainPolygon areaPolygon = ISGWorld.getInstance().getCreator().GetObject(objectId).CastTo(ITerrainPolygon.class);
if (areaPolygon != null)
{
areaPolygon.getPosition().setAltitudeType(AltitudeTypeCode.ATC_TERRAIN_RELATIVE);
areaPolygon.SetParam(5440, null); 	// Give the polygon X-Ray look
areaPolygon.SetParam(5441, null); 	// // Make sure we do not see the red "edit vertex helper polyline"
areaPolygon.getLineStyle().setWidth(-2.0);                 // Make the polygon a bit wider
}
}

@Override
public boolean onBeforeOpenToolContainer() {
super.onBeforeOpenToolContainer();
showNormalButtons();
updateArea(0,0);
groundArea = 0;
UI.runOnRenderThread(new Runnable() {
@Override
public void run() {
// start draw polygon
startDrawPolygon();
// subscribe to lButtonUp as an event that causes the polygon to change
ISGWorld.getInstance().addOnLButtonUpListener(AreaTool.this);
}
});
return true;
}

@Override
public boolean onBeforeCloseToolContainer(CloseReason closeReason) {
super.onBeforeCloseToolContainer(closeReason);
UI.runOnRenderThread(new Runnable() {
@Override
public void run() {
String objectId = (String) ISGWorld.getInstance().GetParam(7200);
// simulate right click to end drawing
ISGWorld.getInstance().SetParam(8044, 0);
ISGWorld.getInstance().getCreator().DeleteObject(objectId);
ISGWorld.getInstance().removeOnLButtonUpListener(AreaTool.this);
}
});
return true;
}

private void updateArea(final double area, final double perimeter)
{
UI.runOnUiThreadAsync(new Runnable() {
@Override
public void run() {
if(area == 0 || perimeter == 0)
{
toolContainerText = "";
}
else
{
String aerialText = String.format(TEApp.getAppContext().getString(R.string.measure_area_area), TEUnits.instance.formatArea(area));
String verticalText = String.format(TEApp.getAppContext().getString(R.string.measure_area_perimeter), TEUnits.instance.formatDistance(perimeter));
toolContainerText = String.format("%s\r\n%s",aerialText, verticalText);
}
toolContainer.setText(toolContainerText);
}
});
}

@Override
public void onButtonClick(int tag) {
super.onButtonClick(tag);
switch (tag) {
case 1: // delete all points
{
// bug fix 18295
groundArea = 0;

updateArea(0, 0);
UI.runOnRenderThread(new Runnable() {
@Override
public void run() {
String objectId = (String) ISGWorld.getInstance().GetParam(7200);
// simulate right click to end drawing
ISGWorld.getInstance().SetParam(8044, 0);
// delete object
ISGWorld.getInstance().getCreator().DeleteObject(objectId);
// and start adding again
startDrawPolygon();
}
});
// get object
break;
}
case 3: // calculate ground area
doWorkAsync();
break;
default:
break;
}

}

@Override
protected void doWork() {
if(groundArea <= 0)
{
ISGWorld.getInstance().addOnAnalysisProgressListener(this);
groundArea = calculateGroundArea();
ISGWorld.getInstance().removeOnAnalysisProgressListener(this);
}
}

@Override
public boolean OnAnalysisProgress(int CurrPos, int Range) {
setProgress(CurrPos, Range);
return workCanceled;
}

@Override
protected void workCompleted() {
if(workCanceled == false)
{
String groundText = String.format(TEApp.getAppContext().getString(R.string.measure_area_ground), TEUnits.instance.formatArea(groundArea));
String text = String.format("%s\r\n%s",groundText, toolContainerText);
toolContainer.setText(text);
}
}

private double calculateGroundArea()
{
String objectId = (String)ISGWorld.getInstance().GetParam(7200);
ITerrainPolygon areaPolygon = ISGWorld.getInstance().getCreator().GetObject(objectId).CastTo(ITerrainPolygon.class);
if (areaPolygon != null)
{
double area = ISGWorld.getInstance().getAnalysis().MeasureTerrainSurface(areaPolygon.getGeometry(), 0);
return area;
}
return 0;
}

@Override
protected void showNormalButtons() {
toolContainer.removeButtons();
toolContainer.addButton(1, R.drawable.delete);
//toolContainer.addButton(2, R.drawable.delete_last_point);
toolContainer.addButton(3, R.drawable.calc_area);
}

@Override
public boolean OnLButtonUp(int Flags, int X, int Y)
{
new Handler(Looper.getMainLooper()).postDelayed(new Runnable() {
@Override
public void run() {
UI.runOnRenderThread(new Runnable() {
@Override
public void run() {
String objectId = (String) ISGWorld.getInstance().GetParam(7200);
ITerrainPolygon areaPolygon = ISGWorld.getInstance().getCreator().GetObject(objectId).CastTo(ITerrainPolygon.class);
IPolygon poly = areaPolygon.getGeometry().CastTo(IPolygon.class);
if (poly != null)
{
double area = (Double)areaPolygon.GetParam(5430);
double perimeter = poly.getExteriorRing().getLength();
updateArea(area, perimeter);
groundArea = 0;
}
}
});
}
}, 10);
return false;
}

}