public AbstractDrawing IsOnExtraDrawing(PointF point, long timestamp)
{
// Check if the mouse is on one of the drawings not attached to any key image.
// Returns the drawing on which we stand (or null if none), and select it on the way.
// the caller will then check its type and decide which action to perform.
AbstractDrawing result = null;
foreach (DrawingChrono chrono in chronoManager.Drawings)
{
int hit = chrono.HitTest(point, timestamp, calibrationHelper.DistortionHelper, imageTransform, imageTransform.Zooming);
if (hit < 0)
{
continue;
}
result = chrono;
hitDrawing = chrono;
break;
}
if (result != null)
{
return(result);
}
foreach (DrawingTrack track in trackManager.Drawings)
{
int hit = track.HitTest(point, timestamp, calibrationHelper.DistortionHelper, imageTransform, imageTransform.Zooming);
if (hit < 0)
{
continue;
}
result = track;
hitDrawing = track;
break;
}
if (result != null)
{
return(result);
}
for (int i = extraDrawings.Count - 1; i >= 0; i--)
{
AbstractDrawing candidate = extraDrawings[i];
int hitRes = candidate.HitTest(point, timestamp, calibrationHelper.DistortionHelper, imageTransform, imageTransform.Zooming);
if (hitRes < 0)
{
continue;
}
result = candidate;
hitDrawing = candidate;
break;
}
return(result);
}
private bool DrawingsHitTest(int keyFrameIndex, PointF mouseLocation, long timestamp)
{
// Look for a hit in all drawings of a particular Key Frame.
// Important side effect : the drawing being hit becomes Selected. This is then used for right click menu.
if (keyframes.Count == 0)
{
return(false);
}
bool isOnDrawing = false;
Keyframe keyframe = keyframes[keyFrameIndex];
UnselectAll();
int currentDrawing = 0;
int hitResult = -1;
while (hitResult < 0 && currentDrawing < keyframe.Drawings.Count)
{
AbstractDrawing drawing = keyframe.Drawings[currentDrawing];
hitResult = drawing.HitTest(mouseLocation, timestamp, calibrationHelper.DistortionHelper, imageTransform, imageTransform.Zooming);
if (hitResult < 0)
{
currentDrawing++;
continue;
}
isOnDrawing = true;
SelectDrawing(drawing);
SelectKeyframe(keyframe);
}
return(isOnDrawing);
}