public void IntersectRect_ReturnsCorrectValues(Rect a, Rect b, Rect expected)
{
// Test identities
Assert.AreEqual(a, ObjectPlacementUtilities.IntersectRect(a, a));
Assert.AreEqual(b, ObjectPlacementUtilities.IntersectRect(b, b));
// Test operation
Assert.AreEqual(expected, ObjectPlacementUtilities.IntersectRect(a, b));
// Test for symmetry
Assert.AreEqual(expected, ObjectPlacementUtilities.IntersectRect(b, a));
}
public void Execute(int index)
{
var foregroundObjectBox = PlacedForegroundObjects[index];
// See comment regarding Random in jobs in BackgroundGenerator.PlaceObjectsJob
var rand = new Random(RandomSeed + (uint)index * ObjectPlacementUtilities.LargePrimeNumber);
var prefabIndex = rand.NextInt(OccludingObjectBounds.Length);
var bounds = OccludingObjectBounds[prefabIndex];
var foregroundObjectBoundingBox = ObjectPlacementUtilities.IntersectRect(
foregroundObjectBox.BoundingBox, ImageCoordinates);
//place over a foreground object such that overlap is between 10%-30%
var numTries = 0;
PlacedOccludingObjects[index] = new PlacedObject()
{
PrefabIndex = -1
};
while (numTries < 1000)
{
numTries++;
var rotation = rand.NextQuaternionRotation();
var position = new Vector3(rand.NextFloat(foregroundObjectBoundingBox.xMin, foregroundObjectBoundingBox.xMax),
rand.NextFloat(foregroundObjectBoundingBox.yMin, foregroundObjectBoundingBox.yMax), 0f);
var scale = ObjectPlacementUtilities.ComputeScaleToMatchArea(Transformer, position, rotation, bounds,
rand.NextFloat(ScalingMin, ScalingMin + ScalingSize) * foregroundObjectBox.ProjectedArea);
var placedObject = new PlacedObject()
{
Scale = scale,
Rotation = rotation,
Position = position,
PrefabIndex = prefabIndex
};
// NOTE: This computation is done with orthographic projection and will be slightly inaccurate
// when rendering with perspective projection
var occludingObjectBox = GetBoundingBox(bounds, scale, position, rotation);
var cropping = ComputeOverlap(foregroundObjectBoundingBox, occludingObjectBox);
if (cropping >= 0.10 && cropping <= 0.30)
{
PlacedOccludingObjects[index] = placedObject;
return;
}
}
}