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=encoding UTF-8
=head1 NAME
BH_Ray3f, BH_Segment3f - ray/segment in space
=head1 SYNTAX
#include <BH/Math/Ray3f.h>
cc prog.c -o prog -lbh
=head1 DESCRIPTION
This module provides functions for working with rays and segments in
three-dimensional space. It includes methods for checking intersections of rays
and segments with planes, triangles, and bounding boxes.
=head1 API CALLS
=head2 BH_Ray3fIntersectPlane
int BH_Ray3fIntersectPlane(const float start[3],
const float direction[3],
const float plane[4],
float *t,
float out[3]);
Checks the intersection between a ray and a plane.
The parameters I<start> and I<direction> describe the ray.
The parameter I<plane> describes the plane.
The parameter I<t> describes the resulting time of the ray's intersection.
The parameter I<out> describes the resulting point of intersection.
In case of success, the function returns 0, in case of an error - an error code.
=head2 BH_Ray3fIntersectTriangle
int BH_Ray3fIntersectTriangle(const float start[3],
const float direction[3],
const float a[3],
const float b[3],
const float c[3],
float *t,
float out[3]);
Checks the intersection between a ray and a triangle.
The parameters I<start> and I<direction> describe the ray.
The parameters I<a>, I<b>, I<c> describe the points of the triangle.
The parameter I<t> describes the resulting time of the ray's intersection.
The parameter I<out> describes the resulting point of intersection.
In case of success, the function returns 0, in case of an error - an error code.
=head2 BH_Segment3fIntersectPlane
int BH_Segment3fIntersectPlane(const float start[3],
const float end[3],
const float plane[4],
float *t,
float out[3]);
Checks the intersection between a segment and a plane.
The parameters I<start> and I<end> describe the segment.
The parameter I<plane> describes the plane.
The parameter I<t> describes the resulting time of the segment's intersection.
The parameter I<out> describes the resulting point of intersection.
In case of success, the function returns 0, in case of an error - an error code.
=head2 BH_Segment3fIntersectTriangle
int BH_Segment3fIntersectTriangle(const float start[3],
const float end[3],
const float a[3],
const float b[3],
const float c[3],
float *t,
float out[3]);
Checks the intersection between a segment and a triangle.
The parameters I<start> and I<end> describe the segment.
The parameters I<a>, I<b>, I<c> describe the points of the triangle.
The parameter I<t> describes the resulting time of the ray's intersection.
The parameter I<out> describes the resulting point of intersection.
In case of success, the function returns 0, in case of an error - an error code.
=head2 BH_Ray3fIntersectBox3f
int BH_Ray3fIntersectBox3f(const float aStart[3],
const float aDirection[3],
const float bMin[3],
const float bMax[3],
float *t,
float out[3]);
Checks the intersection between a ray and a bounding box.
The parameters I<aStart> and I<aDirection> describe the ray.
The parameters I<bMin> and I<bMax> describe the bounding box.
The parameter I<t> describes the resulting time of the first segment's
intersection.
The parameter I<out> describes the resulting point of intersection.
In case of success, the function returns 0, in case of an error - an error code.
=head2 BH_Segment3fIntersectBox3f
int BH_Segment3fIntersectBox3f(const float aStart[3],
const float aEnd[3],
const float bMin[3],
const float bMax[3],
float *t,
float out[3]);
Checks the intersection between a segment and a bounding box.
The parameters I<aStart> and I<aEnd> describe the segment.
The parameters I<bMin> and I<bMax> describe the bounding box.
The parameter I<t> describes the resulting time of the first segment's
intersection.
The parameter I<out> describes the resulting point of intersection.
In case of success, the function returns 0, in case of an error - an error code.
=head1 SEE ALSO
L<BH>
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