protected Cursor selectResizeCursor(Angle azimuth) {
while (azimuth.degrees < 0) azimuth = azimuth.addDegrees(360);
if (azimuth.degrees < 22.5) return Cursor.getPredefinedCursor(Cursor.N_RESIZE_CURSOR);
else if (azimuth.degrees < 67.5) return Cursor.getPredefinedCursor(Cursor.NE_RESIZE_CURSOR);
else if (azimuth.degrees < 112.5) return Cursor.getPredefinedCursor(Cursor.E_RESIZE_CURSOR);
else if (azimuth.degrees < 157.5) return Cursor.getPredefinedCursor(Cursor.SE_RESIZE_CURSOR);
else if (azimuth.degrees < 202.5) return Cursor.getPredefinedCursor(Cursor.S_RESIZE_CURSOR);
else if (azimuth.degrees < 247.5) return Cursor.getPredefinedCursor(Cursor.SW_RESIZE_CURSOR);
else if (azimuth.degrees < 292.5) return Cursor.getPredefinedCursor(Cursor.W_RESIZE_CURSOR);
else if (azimuth.degrees < 337.5) return Cursor.getPredefinedCursor(Cursor.NW_RESIZE_CURSOR);
else // if (azimuth.degrees < 360)
return Cursor.getPredefinedCursor(Cursor.N_RESIZE_CURSOR);
}
protected void setCursor(MeasureTool.ControlPoint controlPoint) {
// TODO: handle 'rotating' mode cursor is this.isRotating() - when using Alt key on regular
// shapes
if (controlPoint == null) {
setComponentCursor(null);
} else {
if (this.measureTool.isRegularShape()) {
if (this.measureTool.isCornerControl(controlPoint)) {
Angle azimuth =
LatLon.greatCircleAzimuth(
controlPoint.getPosition(), this.measureTool.getCenterPosition());
// Account for view heading in cursor selection
azimuth = azimuth.subtract(this.measureTool.getWwd().getView().getHeading());
setComponentCursor(selectResizeCursor(azimuth));
} else if (this.measureTool.isCenterControl(controlPoint)) {
setComponentCursor(Cursor.getPredefinedCursor(Cursor.MOVE_CURSOR));
}
} else {
// Line, path and polygon
setComponentCursor(Cursor.getPredefinedCursor(Cursor.MOVE_CURSOR));
}
}
}
protected void setComponentCursor(Cursor cursor) {
((Component) this.measureTool.getWwd())
.setCursor(cursor != null ? cursor : Cursor.getDefaultCursor());
}