From 7b09710392d35fb55b52031d447a542d99fc6b4b Mon Sep 17 00:00:00 2001 From: Tavian Barnes Date: Tue, 19 Aug 2014 17:10:03 -0400 Subject: Modularize the libdimension codebase. --- libdimension/plane.c | 88 ---------------------------------------------------- 1 file changed, 88 deletions(-) delete mode 100644 libdimension/plane.c (limited to 'libdimension/plane.c') diff --git a/libdimension/plane.c b/libdimension/plane.c deleted file mode 100644 index 5428485..0000000 --- a/libdimension/plane.c +++ /dev/null @@ -1,88 +0,0 @@ -/************************************************************************* - * Copyright (C) 2010-2014 Tavian Barnes * - * * - * This file is part of The Dimension Library. * - * * - * The Dimension Library is free software; you can redistribute it and/ * - * or modify it under the terms of the GNU Lesser General Public License * - * as published by the Free Software Foundation; either version 3 of the * - * License, or (at your option) any later version. * - * * - * The Dimension Library is distributed in the hope that it will be * - * useful, but WITHOUT ANY WARRANTY; without even the implied warranty * - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * - * Lesser General Public License for more details. * - * * - * You should have received a copy of the GNU Lesser General Public * - * License along with this program. If not, see * - * . * - *************************************************************************/ - -/** - * @file - * Planes. - */ - -#include "dimension.h" -#include -#include - -/// Plane type. -typedef struct { - dmnsn_object object; - dmnsn_vector normal; -} dmnsn_plane; - -/// Returns the closest intersection of `line' with `plane'. -static bool -dmnsn_plane_intersection_fn(const dmnsn_object *object, dmnsn_line line, - dmnsn_intersection *intersection) -{ - const dmnsn_plane *plane = (const dmnsn_plane *)object; - dmnsn_vector normal = plane->normal; - - double den = dmnsn_vector_dot(line.n, normal); - if (den != 0.0) { - double t = -dmnsn_vector_dot(line.x0, normal)/den; - if (t >= 0.0) { - intersection->t = t; - intersection->normal = normal; - return true; - } - } - return false; -} - -/// Return whether a point is inside a plane. -static bool -dmnsn_plane_inside_fn(const dmnsn_object *object, dmnsn_vector point) -{ - const dmnsn_plane *plane = (const dmnsn_plane *)object; - return dmnsn_vector_dot(point, plane->normal) < 0.0; -} - -/// Plane bounding callback. -static dmnsn_bounding_box -dmnsn_plane_bounding_fn(const dmnsn_object *object, dmnsn_matrix trans) -{ - return dmnsn_infinite_bounding_box(); -} - -/// Plane vtable. -static const dmnsn_object_vtable dmnsn_plane_vtable = { - .intersection_fn = dmnsn_plane_intersection_fn, - .inside_fn = dmnsn_plane_inside_fn, - .bounding_fn = dmnsn_plane_bounding_fn, -}; - -dmnsn_object * -dmnsn_new_plane(dmnsn_pool *pool, dmnsn_vector normal) -{ - dmnsn_plane *plane = DMNSN_PALLOC(pool, dmnsn_plane); - plane->normal = normal; - - dmnsn_object *object = &plane->object; - dmnsn_init_object(object); - object->vtable = &dmnsn_plane_vtable; - return object; -} -- cgit v1.2.3