Differential D4308 Diff 13524 source/blender/blenlib/intern/math_geom.c

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source/blender/blenlib/intern/math_geom.c

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return min_ff(dist_a, dist_b);		return min_ff(dist_a, dist_b);
}		}
else {		else {
return max_ff(dist_a, dist_b);		return max_ff(dist_a, dist_b);
}		}
}		}

/**		/**
* return the distance squared of a point to a ray.		* Compute the squared distance of a point to a line (defined as ray).
		* \param ray_origin: A point on the line.
		* \param ray_direction: Normalized direction of the line.
		* \param co: Point to which the distance is to be calculated.
*/		*/
float dist_squared_to_ray_v3(		float dist_squared_to_ray_v3_normalized(
const float ray_origin[3], const float ray_direction[3],		const float ray_origin[3], const float ray_direction[3],
const float co[3], float *r_depth)		const float co[3])
{		{
float dvec[3];		float origin_to_co[3];
sub_v3_v3v3(dvec, co, ray_origin);		sub_v3_v3v3(origin_to_co, co, ray_origin);
*r_depth = dot_v3v3(dvec, ray_direction);
return len_squared_v3(dvec) - SQUARE(*r_depth);		float origin_to_proj[3];
		project_v3_v3v3_normalized(origin_to_proj, origin_to_co, ray_direction);

		float co_projected_on_ray[3];
		add_v3_v3v3(co_projected_on_ray, ray_origin, origin_to_proj);

		return len_squared_v3v3(co, co_projected_on_ray);
}		}


/**		/**
* Find the closest point in a seg to a ray and return the distance squared.		* Find the closest point in a seg to a ray and return the distance squared.
* \param r_point: Is the point on segment closest to ray (or to ray_origin if the ray and the segment are parallel).		* \param r_point: Is the point on segment closest to ray (or to ray_origin if the ray and the segment are parallel).
* \param r_depth: the distance of r_point projection on ray to the ray_origin.		* \param r_depth: the distance of r_point projection on ray to the ray_origin.
*/		*/
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