/// <summary>
/// Create a 2D bounding box that contain all given points
/// </summary>
/// <param name="point_list"></param>
/// <returns></returns>
private static BoundingBox2D CreateBoundingBox2DFromPointList(Vector3 [] point_list)
{
BoundingBox2D bb_ret = new BoundingBox2D();
bb_ret.min = new Vector2(float.MaxValue, float.MaxValue);
bb_ret.max = new Vector2(float.MinValue, float.MinValue);
foreach (var point in point_list)
{
// get bb in 2d
var screen_pos = GTAUtils.Convert3DPostoScreenPos(point);
if (screen_pos.X == -1f || screen_pos.Y == -1f)
{
return(null);
}
// update bb
bb_ret.min.X = Math.Min(bb_ret.min.X, screen_pos.X);
bb_ret.min.Y = Math.Min(bb_ret.min.Y, screen_pos.Y);
bb_ret.max.X = Math.Max(bb_ret.max.X, screen_pos.X);
bb_ret.max.Y = Math.Max(bb_ret.max.Y, screen_pos.Y);
}
return(bb_ret);
}
/// <summary>
/// Perform detection data export (Toolchain method: call GTA5 native functions & utility functions)
/// </summary>
private void DoDetectionExport()
{
Wait(40);
// find target objects around camera
var camera_position = GameplayCamera.Position;
List <Entity> found_entities = new List <Entity>();
// find pedestrians
if (_save_settings.SaveObjectType == SaveObjectType.PEDESTRIANS ||
_save_settings.SaveObjectType == SaveObjectType.PED_AND_VEHICLES)
{
found_entities.AddRange(World.GetNearbyPeds(camera_position, _save_settings.DetectDistance).ToList());
}
// find vehicles
if (_save_settings.SaveObjectType == SaveObjectType.VEHICLES ||
_save_settings.SaveObjectType == SaveObjectType.PED_AND_VEHICLES)
{
found_entities.AddRange(World.GetNearbyVehicles(camera_position, _save_settings.DetectDistance).ToList());
}
List <GTAUtils.BoundingBox2D> peds_bblist = new List <GTAUtils.BoundingBox2D>();
List <GTAUtils.BoundingBox2D> vehicle_bblist = new List <GTAUtils.BoundingBox2D>();
// detect 2D bounding box
foreach (var entity in found_entities)
{
if (entity == null || entity.Model == null)
{
continue;
}
// check if is in screen
if (!entity.IsVisible)
{
continue;
}
if (!entity.IsOnScreen)
{
continue;
}
if (entity.IsOccluded)
{
continue;
}
// check occlusion by ray-casting
if (!GTAUtils.CheckOcculusionVisibility(entity, camera_position))
{
continue;
}
// compute a bounding box
var bb = GTAUtils.ComputeBoundingBox(entity, entity.Model.IsPed);
// cannot get bounding box
if (bb == null)
{
continue;
}
if (entity.Model.IsPed)
{
peds_bblist.Add(bb);
}
else
{
vehicle_bblist.Add(bb);
}
}
var screenshot = Utils.GetPrimaryScreenImage();
// override to image
var overdrawn_image = new Bitmap(screenshot);
DrawBoundingBoxes(overdrawn_image, peds_bblist, Color.Red);
DrawBoundingBoxes(overdrawn_image, vehicle_bblist, Color.Blue);
// save image
var filename_prefix = _script_started_time.ToString("yyyy-MM-dd_hh-mm-ss_");
var filepath_prefix = System.IO.Path.Combine(_save_settings.OutputDirectory, filename_prefix);
var filenumber_str = string.Format("{0:D8}", _frame_count);
Utils.SaveBitmap(overdrawn_image, filepath_prefix + "with_rect_" + filenumber_str + ".jpg");
Utils.SaveBitmap(screenshot, filepath_prefix + "original_" + filenumber_str + ".png");
}