public static Bounds CalculateBounds(ChiselGeneratorComponent generator)
{
if (!generator.TopTreeNode.Valid)
{
return(ChiselHierarchyItem.EmptyBounds);
}
var modelMatrix = ChiselNodeHierarchyManager.FindModelTransformMatrixOfTransform(generator.hierarchyItem.Transform);
var minMax = new ChiselAABB {
};
var boundsCount = 0;
s_FoundBrushes.Clear();
ChiselGeneratedComponentManager.GetAllTreeBrushes(generator, s_FoundBrushes);
foreach (var brush in s_FoundBrushes)
{
if (!brush.Valid)
{
continue;
}
var transformation = modelMatrix * (Matrix4x4)brush.NodeToTreeSpaceMatrix;
var childBounds = brush.Bounds;
var size = childBounds.Max - childBounds.Min;
var magnitude = math.lengthsq(size);
if (float.IsInfinity(magnitude) ||
float.IsNaN(magnitude))
{
var center = ((float4)transformation.GetColumn(3)).xyz;
var halfSize = size * 0.5f;
childBounds = new ChiselAABB {
Min = center - halfSize, Max = center + halfSize
};
}
if (magnitude != 0)
{
if (boundsCount == 0)
{
minMax = childBounds;
}
else
{
minMax.Encapsulate(childBounds);
}
boundsCount++;
}
}
if (boundsCount == 0)
{
return(ChiselHierarchyItem.EmptyBounds);
}
var bounds = new Bounds();
bounds.SetMinMax(minMax.Min, minMax.Max);
return(bounds);
}
