Make inside_fn's return bool.

3 files changed, 10 insertions, 8 deletions

diff --git a/libdimension/cube.c b/libdimension/cube.c
index 9588f24..8b77da8 100644
--- a/libdimension/cube.c
+++ b/libdimension/cube.c
@@ -29,8 +29,8 @@
 /* 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);
+static bool dmnsn_cube_inside_fn(const dmnsn_object *cube,
+                                 dmnsn_vector point);
 
 /* Allocate a new cube object */
 dmnsn_object *
@@ -135,7 +135,7 @@ dmnsn_cube_intersection_fn(const dmnsn_object *cube, dmnsn_line line)
 }
 
 /* Inside callback for a cube */
-static int
+static bool
 dmnsn_cube_inside_fn(const dmnsn_object *cube, dmnsn_vector point)
 {
   return point.x > -1.0 && point.x < 1.0
diff --git a/libdimension/dimension/object.h b/libdimension/dimension/object.h
index e607d8c..bd78a35 100644
--- a/libdimension/dimension/object.h
+++ b/libdimension/dimension/object.h
@@ -25,6 +25,8 @@
 #ifndef DIMENSION_OBJECT_H
 #define DIMENSION_OBJECT_H
 
+#include <stdbool.h>
+
 /* A type to represent a ray-object intersection */
 typedef struct dmnsn_intersection {
   /* The ray and point which intersected */
@@ -51,8 +53,8 @@ typedef struct dmnsn_object dmnsn_object;
 typedef dmnsn_intersection *
 dmnsn_object_intersection_fn(const dmnsn_object *object, dmnsn_line line);
 
-typedef int dmnsn_object_inside_fn(const dmnsn_object *object,
-                                   dmnsn_vector point);
+typedef bool dmnsn_object_inside_fn(const dmnsn_object *object,
+                                    dmnsn_vector point);
 
 /* dmnsn_object definition */
 struct dmnsn_object {
diff --git a/libdimension/sphere.c b/libdimension/sphere.c
index f30c964..f42ef17 100644
--- a/libdimension/sphere.c
+++ b/libdimension/sphere.c
@@ -31,8 +31,8 @@
 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);
+static bool dmnsn_sphere_inside_fn(const dmnsn_object *sphere,
+                                   dmnsn_vector point);
 
 /* Allocate a new sphere */
 dmnsn_object *
@@ -81,7 +81,7 @@ dmnsn_sphere_intersection_fn(const dmnsn_object *sphere, dmnsn_line line)
 }
 
 /* Return whether a point is inside a sphere (x**2 + y**2 + z**2 < 1.0) */
-static int
+static bool
 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;