internal float SampleField(ref Vector3 position)
{
Vector3 localPosition = position - m_translation;
Vector3I samplePos;
Vector2 pos = Vector2.Zero;
MyCsgPrecomputedHelpres.CalculateSamplePosition(ref localPosition, out samplePos, ref pos, m_header.Resolution);
return(GetValueForPosition(ref samplePos, ref pos, true));
}
private float SignedDistanceInternal(float lodVoxelSize, IMyModule macroModulator, IMyModule detailModulator, ref Vector3 localPosition, float distance)
{
if (distance > 0.0f)
{
float signedDistance = distance - m_averageRadius;
Vector3I samplePos;
Vector2 pos = Vector2.Zero;
MyCsgPrecomputedHelpres.CalculateSamplePosition(ref localPosition, out samplePos, ref pos, m_header.Resolution);
float value = GetValueForPosition(ref samplePos, ref pos, true);
return((signedDistance - value) / lodVoxelSize);
}
return(0.0f);
}
internal override ContainmentType Contains(ref BoundingBox queryAabb, ref BoundingSphere querySphere, float lodVoxelSize)
{
ContainmentType outerContainment, innerContainment;
BoundingSphere sphere = new BoundingSphere(
m_translation,
m_outerRadius + lodVoxelSize);
sphere.Contains(ref queryAabb, out outerContainment);
if (outerContainment == ContainmentType.Disjoint)
{
return(ContainmentType.Disjoint);
}
sphere.Radius = m_innerRadius - lodVoxelSize;
sphere.Contains(ref queryAabb, out innerContainment);
if (innerContainment == ContainmentType.Contains)
{
return(ContainmentType.Contains);
}
float minDistance = float.MaxValue;
float maxDistance = -float.MaxValue;
Vector3 localPosition = queryAabb.Min - m_translation;
float distance = localPosition.LengthSquared();
if (distance < 0.01f)
{
return(ContainmentType.Intersects);
}
Vector3I samplePos;
Vector2 pos = Vector2.Zero;
MyCsgPrecomputedHelpres.CalculateSamplePosition(ref localPosition, out samplePos, ref pos, m_header.Resolution);
float value = GetValueForPosition(ref samplePos, ref pos, true);
minDistance = MathHelper.Min(minDistance, value);
maxDistance = MathHelper.Max(maxDistance, value);
localPosition = queryAabb.Max - m_translation;
distance = localPosition.LengthSquared();
if (distance < 0.01f)
{
return(ContainmentType.Intersects);
}
MyCsgPrecomputedHelpres.CalculateSamplePosition(ref localPosition, out samplePos, ref pos, m_header.Resolution);
value = GetValueForPosition(ref samplePos, ref pos, true);
minDistance = MathHelper.Min(minDistance, value);
maxDistance = MathHelper.Max(maxDistance, value);
sphere.Radius = m_innerRadius + maxDistance + lodVoxelSize;
sphere.Contains(ref queryAabb, out outerContainment);
if (outerContainment == ContainmentType.Disjoint)
{
return(ContainmentType.Disjoint);
}
sphere.Radius = m_innerRadius + minDistance - lodVoxelSize;
sphere.Contains(ref queryAabb, out innerContainment);
if (innerContainment == ContainmentType.Contains)
{
return(ContainmentType.Contains);
}
return(ContainmentType.Intersects);
}
