12345678910111213141516171819202122232425262728293031323334353637383940414243444546 |
- /*
- * DoRayMe - a quick and dirty Raytracer
- * Plane implementation
- *
- * Created by Manoël Trapier
- * Copyright (c) 2020 986-Studio.
- *
- */
- #include <tuple.h>
- #include <ray.h>
- #include <shape.h>
- #include <plane.h>
- #include <math_helper.h>
- Intersect Plane::localIntersect(Ray r)
- {
- double t;
- Intersect ret = Intersect();
- if (fabs(r.direction.y) < getEpsilon())
- {
- /* With a direction == 0, the ray can't intersect the plane */
- return ret;
- }
- t = -r.origin.y / r.direction.y;
- ret.add(Intersection(t, this));
- return ret;
- }
- Tuple Plane::localNormalAt(Tuple point, Intersection *hit)
- {
- return Vector(0, 1, 0);
- }
- BoundingBox Plane::getLocalBounds()
- {
- BoundingBox ret;
- ret | Point(-INFINITY, 0-getEpsilon(), -INFINITY);
- ret | Point(INFINITY, 0+getEpsilon(), INFINITY);
- return ret;
- }
|