//function for creating specified number of graphics between keyframe positions
public void generatePathBtwnKFrames()
{
int numPtsBtwnKFrames = 0;
//this is the from point for the lines connecting the interpolated point graphics
IPoint previousPt = new PointClass();
IZAware prevPtZAware = (IZAware)previousPt;
prevPtZAware.ZAware = true;
previousPt.PutCoords(0, 0);
//this is the line connecting the interpolated camera positions
IPolyline connectingLine = new PolylineClass();
IZAware lineZAware = (IZAware)connectingLine;
lineZAware.ZAware = true;
if (theCamForm.ptsBtwnKframeTextBox.Text != "")
{
numPtsBtwnKFrames = Convert.ToInt32(theCamForm.ptsBtwnKframeTextBox.Text);
}
else
{
MessageBox.Show("Please enter the number of points to be created");
return;
}
theCamForm.playButton.Enabled = false;
theCamForm.stopButton.Enabled = false;
theCamForm.generatePathButton.Enabled = false;
addGraphicLayer();
string selectedTrack = theCamForm.animTracksListBox.SelectedItem.ToString();
animationTracks.FindTrack(selectedTrack, out animationTrack);
IAGAnimationTrackKeyframes kFrames = (IAGAnimationTrackKeyframes)animationTrack;
int kFrameCount = kFrames.KeyframeCount;
//loop over the keyframes in the selected camera track
for (int i = 0; i < kFrameCount; i++)
{
IAGKeyframe currentKeyframe = kFrames.get_Keyframe(i);
IAGKeyframe prevKeyframe;
IAGKeyframe nextKeyframe;
IAGKeyframe afterNextKeyframe;
//if else statements to determine the keyframe arguments to the interpolate method
//this is needed because the first and the last keyframes should be handled differently
//than the middle keyframes
if (i > 0)
{
prevKeyframe = kFrames.get_Keyframe(i - 1);
}
else
{
prevKeyframe = kFrames.get_Keyframe(i);
}
if (i < kFrameCount - 1)
{
nextKeyframe = kFrames.get_Keyframe(i + 1);
}
else
{
nextKeyframe = kFrames.get_Keyframe(i);
}
if (i < kFrameCount - 2)
{
afterNextKeyframe = kFrames.get_Keyframe(i + 2);
}
else
{
//this should be equal to the nextKeyFrame for the last keyframe
afterNextKeyframe = nextKeyframe;//kFrames.get_Keyframe(i);
}
double origCamLat, origCamLong, origCamAlt;
double interLat, interLong, interAlt;
double tarLat, tarLong, tarAlt;
double interTarLat, interTarLong, interTarAlt;
globeCamera.GetObserverLatLonAlt(out origCamLat, out origCamLong, out origCamAlt);
globeCamera.GetTargetLatLonAlt(out tarLat, out tarLong, out tarAlt);
IAGAnimationContainer pAnimContainer = animationTracks.AnimationObjectContainer;
object objToInterpolate = (object)globeCamera;
double timeDiff = nextKeyframe.TimeStamp - currentKeyframe.TimeStamp;
//interpolate positions between keyframes and draw the graphics
for (int j = 0; j < numPtsBtwnKFrames + 1; j++)
{
double timeToInterpolate = currentKeyframe.TimeStamp + j * (timeDiff / (numPtsBtwnKFrames + 1));
//for 0 to n-1 keyframes
if (i >= 0 & i < kFrameCount - 1)
{
currentKeyframe.Interpolate(animationTrack, pAnimContainer, objToInterpolate, 4, timeToInterpolate, nextKeyframe, prevKeyframe, afterNextKeyframe);
currentKeyframe.Interpolate(animationTrack, pAnimContainer, objToInterpolate, 5, timeToInterpolate, nextKeyframe, prevKeyframe, afterNextKeyframe);
currentKeyframe.Interpolate(animationTrack, pAnimContainer, objToInterpolate, 6, timeToInterpolate, nextKeyframe, prevKeyframe, afterNextKeyframe);
currentKeyframe.Interpolate(animationTrack, pAnimContainer, objToInterpolate, 1, timeToInterpolate, nextKeyframe, prevKeyframe, afterNextKeyframe);
currentKeyframe.Interpolate(animationTrack, pAnimContainer, objToInterpolate, 2, timeToInterpolate, nextKeyframe, prevKeyframe, afterNextKeyframe);
currentKeyframe.Interpolate(animationTrack, pAnimContainer, objToInterpolate, 3, timeToInterpolate, nextKeyframe, prevKeyframe, afterNextKeyframe);
globeCamera.GetObserverLatLonAlt(out interLat, out interLong, out interAlt);
globeCamera.GetTargetLatLonAlt(out interTarLat, out interTarLong, out interTarAlt);
globeCamera.SetObserverLatLonAlt(origCamLat, origCamLong, origCamAlt);
globeCamera.SetTargetLatLonAlt(tarLat, tarLong, tarAlt);
IPoint pObs = new PointClass();
IZAware obsZAware = (IZAware)pObs;
obsZAware.ZAware = true;
pObs.X = interLong;
pObs.Y = interLat;
pObs.Z = interAlt * 1000;
double symbolSize = 10000;
if (pObs.Z >= 10000)
{
symbolSize = 10000 + pObs.Z / 10;
}
else
{
symbolSize = pObs.Z;
}
if (j == 0)
{
addPointGraphicElements(pObs, 2552550, symbolSize);
}
else
{
addPointGraphicElements(pObs, 16732415, symbolSize);
}
connectingLine.FromPoint = previousPt;
connectingLine.ToPoint = pObs;
if (i == 0 & j == 0)
{
}
else
{
addLineGraphicElements(connectingLine, 150150150);
}
previousPt.PutCoords(pObs.X, pObs.Y);
previousPt.Z = pObs.Z;
//add camera to target orientation
if (theCamForm.camToTargetDirectionCheckBox.Checked == true)
{
cameraToTargetDirection(interLat, interLong, interAlt, interTarLat, interTarLong, interTarAlt);
}
globeDisplay.RefreshViewers();
}
//for last keyframe
else if (i == kFrameCount - 1)
{
if (j == 0)
{
currentKeyframe.Interpolate(animationTrack, pAnimContainer, objToInterpolate, 4, 1, nextKeyframe, prevKeyframe, afterNextKeyframe);
currentKeyframe.Interpolate(animationTrack, pAnimContainer, objToInterpolate, 5, 1, nextKeyframe, prevKeyframe, afterNextKeyframe);
currentKeyframe.Interpolate(animationTrack, pAnimContainer, objToInterpolate, 6, 1, nextKeyframe, prevKeyframe, afterNextKeyframe);
currentKeyframe.Interpolate(animationTrack, pAnimContainer, objToInterpolate, 1, 1, nextKeyframe, prevKeyframe, afterNextKeyframe);
currentKeyframe.Interpolate(animationTrack, pAnimContainer, objToInterpolate, 2, 1, nextKeyframe, prevKeyframe, afterNextKeyframe);
currentKeyframe.Interpolate(animationTrack, pAnimContainer, objToInterpolate, 3, 1, nextKeyframe, prevKeyframe, afterNextKeyframe);
globeCamera.GetObserverLatLonAlt(out interLat, out interLong, out interAlt);
globeCamera.GetTargetLatLonAlt(out interTarLat, out interTarLong, out interTarAlt);
globeCamera.SetObserverLatLonAlt(origCamLat, origCamLong, origCamAlt);
globeCamera.SetTargetLatLonAlt(tarLat, tarLong, tarAlt);
IPoint pObs = new PointClass();
IZAware obsZAware = (IZAware)pObs;
obsZAware.ZAware = true;
pObs.X = interLong;
pObs.Y = interLat;
pObs.Z = interAlt * 1000;
double symbolSize = 10000;
if (pObs.Z >= 10000)
{
symbolSize = 10000 + pObs.Z / 10;
}
else
{
symbolSize = pObs.Z;
}
connectingLine.FromPoint = previousPt;
connectingLine.ToPoint = pObs;
addPointGraphicElements(pObs, 2552550, symbolSize);
addLineGraphicElements(connectingLine, 150150150);
//add camera to target orientation
if (theCamForm.camToTargetDirectionCheckBox.Checked == true)
{
cameraToTargetDirection(interLat, interLong, interAlt, interTarLat, interTarLong, interTarAlt);
}
globeDisplay.RefreshViewers();
}
}
}
}
//enable buttons
theCamForm.playButton.Enabled = true;
theCamForm.generatePathButton.Enabled = true;
}
