The Trace method in the BBox struct is used to determine if a ray intersects with the bounding box. It calculates the intersection point and returns whether the intersection occurs within a specified distance.
The Trace method in the BBox struct is used to determine if a ray intersects with the bounding box. It calculates the intersection point and returns whether the intersection occurs within a specified distance.
To use the Trace method, you need to provide a Ray object, a maximum distance for the trace, and an output parameter to receive the distance to the intersection point if an intersection occurs.
The method signature is as follows:
public bool Trace(Ray ray, float distance, out float hitDistance)- ray: The ray to test against the bounding box.
- distance: The maximum distance from the ray's origin to consider for intersection.
- hitDistance: An output parameter that will contain the distance from the ray's origin to the intersection point if an intersection occurs.
The method returns true if the ray intersects the bounding box within the specified distance, otherwise false.
// Example usage of BBox.Trace
BBox boundingBox = new BBox(new Vector3(0, 0, 0), new Vector3(1, 1, 1));
Ray ray = new Ray(new Vector3(-1, 0.5f, 0.5f), Vector3.Right);
float maxDistance = 10.0f;
float hitDistance;
bool intersects = boundingBox.Trace(ray, maxDistance, out hitDistance);
if (intersects)
{
// The ray intersects the bounding box
Console.WriteLine($"Intersection at distance: {hitDistance}");
}
else
{
// No intersection within the specified distance
Console.WriteLine("No intersection detected.");
}