Split up objects, finishes, pigments, lights, cameras, etc.

1 files changed, 0 insertions, 211 deletions

diff --git a/libdimension/objects.c b/libdimension/objects.c
deleted file mode 100644
index 3470506..0000000
--- a/libdimension/objects.c
+++ /dev/null
@@ -1,211 +0,0 @@
-/*************************************************************************
- * Copyright (C) 2009 Tavian Barnes <tavianator@gmail.com>               *
- *                                                                       *
- * 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                         *
- * <http://www.gnu.org/licenses/>.                                       *
- *************************************************************************/
-
-#include "dimension.h"
-#include <stdlib.h> /* For malloc */
-#include <math.h>   /* For sqrt   */
-
-/*
- * Sphere
- */
-
-/* Sphere object callbacks */
-
-static dmnsn_intersection *
-dmnsn_sphere_intersection_fn(const dmnsn_object *sphere, dmnsn_line line);
-
-static int dmnsn_sphere_inside_fn(const dmnsn_object *sphere,
-                                  dmnsn_vector point);
-
-/* Allocate a new sphere */
-dmnsn_object *
-dmnsn_new_sphere()
-{
-  dmnsn_object *sphere = dmnsn_new_object();
-  if (sphere) {
-    sphere->intersection_fn = &dmnsn_sphere_intersection_fn;
-    sphere->inside_fn       = &dmnsn_sphere_inside_fn;
-    sphere->min             = dmnsn_new_vector(-1.0, -1.0, -1.0);
-    sphere->max             = dmnsn_new_vector(1.0, 1.0, 1.0);
-  }
-  return sphere;
-}
-
-/* Returns the closest intersection of `line' with `sphere' */
-static dmnsn_intersection *
-dmnsn_sphere_intersection_fn(const dmnsn_object *sphere, dmnsn_line line)
-{
-  double a, b, c, t;
-  dmnsn_intersection *intersection = NULL;
-
-  /* Solve (x0 + nx*t)^2 + (y0 + ny*t)^2 + (z0 + nz*t)^2 == 1 */
-
-  a = line.n.x*line.n.x + line.n.y*line.n.y + line.n.z*line.n.z;
-  b = 2.0*(line.n.x*line.x0.x + line.n.y*line.x0.y + line.n.z*line.x0.z);
-  c = line.x0.x*line.x0.x + line.x0.y*line.x0.y + line.x0.z*line.x0.z - 1.0;
-
-  if (b*b - 4.0*a*c >= 0) {
-    t = (-b - sqrt(b*b - 4.0*a*c))/(2*a);
-    if (t < 0.0) {
-      t = (-b + sqrt(b*b - 4.0*a*c))/(2*a);
-    }
-
-    if (t >= 0.0) {
-      intersection = dmnsn_new_intersection();
-      intersection->ray     = line;
-      intersection->t       = t;
-      intersection->normal  = dmnsn_line_point(line, t);
-      intersection->texture = sphere->texture;
-
-      /* Flip the normal if we're inside the sphere */
-      if (dmnsn_vector_dot(line.n, intersection->normal) > 0.0)
-        intersection->normal = dmnsn_vector_negate(intersection->normal);
-    }
-  }
-
-  return intersection;
-}
-
-/* Return whether a point is inside a sphere (x**2 + y**2 + z**2 < 1.0) */
-static int
-dmnsn_sphere_inside_fn(const dmnsn_object *sphere, dmnsn_vector point)
-{
-  return point.x*point.x + point.y*point.y + point.z*point.z < 1.0;
-}
-
-/*
- * Cube
- */
-
-/* Cube callbacks */
-static dmnsn_intersection *dmnsn_cube_intersection_fn(const dmnsn_object *cube,
-                                                      dmnsn_line line);
-static int dmnsn_cube_inside_fn(const dmnsn_object *cube,
-                                  dmnsn_vector point);
-
-/* Allocate a new cube object */
-dmnsn_object *
-dmnsn_new_cube()
-{
-  dmnsn_object *cube = dmnsn_new_object();
-  if (cube) {
-    cube->intersection_fn = &dmnsn_cube_intersection_fn;
-    cube->inside_fn       = &dmnsn_cube_inside_fn;
-    cube->min             = dmnsn_new_vector(-1.0, -1.0, -1.0);
-    cube->max             = dmnsn_new_vector(1.0, 1.0, 1.0);
-  }
-  return cube;
-}
-
-/* Intersections callback for a cube */
-static dmnsn_intersection *
-dmnsn_cube_intersection_fn(const dmnsn_object *cube, dmnsn_line line)
-{
-  double t = -1.0, t_temp;
-  dmnsn_vector p, normal;
-  dmnsn_intersection *intersection = NULL;
-
-  /* Six ray-plane intersection tests (x, y, z) = +/- 1.0 */
-
-  if (line.n.x != 0.0) {
-    /* x = -1.0 */
-    t_temp = (-1.0 - line.x0.x)/line.n.x;
-    p = dmnsn_line_point(line, t_temp);
-    if (p.y >= -1.0 && p.y <= 1.0 && p.z >= -1.0 && p.z <= 1.0
-        && t_temp >= 0.0 && (t < 0.0 || t_temp < t))
-    {
-      t = t_temp;
-      normal = dmnsn_new_vector(-copysign(1.0, line.n.x), 0.0, 0.0);
-    }
-
-    /* x = 1.0 */
-    t_temp = (1.0 - line.x0.x)/line.n.x;
-    p = dmnsn_line_point(line, t_temp);
-    if (p.y >= -1.0 && p.y <= 1.0 && p.z >= -1.0 && p.z <= 1.0
-        && t_temp >= 0.0 && (t < 0.0 || t_temp < t))
-    {
-      t = t_temp;
-      normal = dmnsn_new_vector(-copysign(1.0, line.n.x), 0.0, 0.0);
-    }
-  }
-
-  if (line.n.y != 0.0) {
-    /* y = -1.0 */
-    t_temp = (-1.0 - line.x0.y)/line.n.y;
-    p = dmnsn_line_point(line, t_temp);
-    if (p.x >= -1.0 && p.x <= 1.0 && p.z >= -1.0 && p.z <= 1.0
-        && t_temp >= 0.0 && (t < 0.0 || t_temp < t))
-    {
-      t = t_temp;
-      normal = dmnsn_new_vector(0.0, -copysign(1.0, line.n.y), 0.0);
-    }
-
-    /* y = 1.0 */
-    t_temp = (1.0 - line.x0.y)/line.n.y;
-    p = dmnsn_line_point(line, t_temp);
-    if (p.x >= -1.0 && p.x <= 1.0 && p.z >= -1.0 && p.z <= 1.0
-        && t_temp >= 0.0 && (t < 0.0 || t_temp < t))
-    {
-      t = t_temp;
-      normal = dmnsn_new_vector(0.0, -copysign(1.0, line.n.y), 0.0);
-    }
-  }
-
-  if (line.n.z != 0.0) {
-    /* z = -1.0 */
-    t_temp = (-1.0 - line.x0.z)/line.n.z;
-    p = dmnsn_line_point(line, t_temp);
-    if (p.x >= -1.0 && p.x <= 1.0 && p.y >= -1.0 && p.y <= 1.0
-        && t_temp >= 0.0 && (t < 0.0 || t_temp < t))
-    {
-      t = t_temp;
-      normal = dmnsn_new_vector(0.0, 0.0, -copysign(1.0, line.n.z));
-    }
-
-    /* z = 1.0 */
-    t_temp = (1.0 - line.x0.z)/line.n.z;
-    p = dmnsn_line_point(line, t_temp);
-    if (p.x >= -1.0 && p.x <= 1.0 && p.y >= -1.0 && p.y <= 1.0
-        && t_temp >= 0.0 && (t < 0.0 || t_temp < t))
-    {
-      t = t_temp;
-      normal = dmnsn_new_vector(0.0, 0.0, -copysign(1.0, line.n.z));
-    }
-  }
-
-  if (t >= 0.0) {
-    intersection = dmnsn_new_intersection();
-    intersection->ray     = line;
-    intersection->t       = t;
-    intersection->normal  = normal;
-    intersection->texture = cube->texture;
-  }
-
-  return intersection;
-}
-
-/* Inside callback for a cube */
-static int
-dmnsn_cube_inside_fn(const dmnsn_object *cube, dmnsn_vector point)
-{
-  return point.x > -1.0 && point.x < 1.0
-      && point.y > -1.0 && point.y < 1.0
-      && point.z > -1.0 && point.z < 1.0;
-}