summaryrefslogtreecommitdiffstats
path: root/libdimension
diff options
context:
space:
mode:
Diffstat (limited to 'libdimension')
-rw-r--r--libdimension/Makefile.am14
-rw-r--r--libdimension/ambient.c53
-rw-r--r--libdimension/cube.c (renamed from libdimension/objects.c)68
-rw-r--r--libdimension/diffuse.c58
-rw-r--r--libdimension/finish_combination.c (renamed from libdimension/finishes.c)109
-rw-r--r--libdimension/perspective.c (renamed from libdimension/cameras.c)0
-rw-r--r--libdimension/phong.c67
-rw-r--r--libdimension/point_light.c (renamed from libdimension/lights.c)0
-rw-r--r--libdimension/solid_pigment.c (renamed from libdimension/pigments.c)0
-rw-r--r--libdimension/sphere.c91
10 files changed, 278 insertions, 182 deletions
diff --git a/libdimension/Makefile.am b/libdimension/Makefile.am
index e67f09e..49685c7 100644
--- a/libdimension/Makefile.am
+++ b/libdimension/Makefile.am
@@ -41,27 +41,31 @@ nobase_include_HEADERS = dimension.h \
lib_LTLIBRARIES = libdimension.la
libdimension_la_SOURCES = $(nobase_include_HEADERS) \
+ ambient.c \
camera.c \
- cameras.c \
canvas.c \
color.c \
+ cube.c \
+ diffuse.c \
dimension_impl.h \
error.c \
- finishes.c \
+ finish_combination.c \
geometry.c \
gl.c \
inlines.c \
kD_splay_tree.c \
kD_splay_tree.h \
light.c \
- lights.c \
object.c \
- objects.c \
- pigments.c \
+ perspective.c \
+ phong.c \
png.c \
+ point_light.c \
progress.c \
raytrace.c \
scene.c \
+ solid_pigment.c \
+ sphere.c \
texture.c
libdimension_la_LDFLAGS = -version-info 0:0:0
libdimension_la_LIBADD = -lm -lpthread -lpng -lGL
diff --git a/libdimension/ambient.c b/libdimension/ambient.c
new file mode 100644
index 0000000..916ba67
--- /dev/null
+++ b/libdimension/ambient.c
@@ -0,0 +1,53 @@
+/*************************************************************************
+ * 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>
+
+/*
+ * Ambient finish
+ */
+
+static dmnsn_color
+dmnsn_ambient_finish_fn(const dmnsn_finish *finish, dmnsn_color pigment)
+{
+ dmnsn_color *ambient = finish->ptr;
+ return dmnsn_color_illuminate(*ambient, pigment);
+}
+
+dmnsn_finish *
+dmnsn_new_ambient_finish(dmnsn_color ambient)
+{
+ dmnsn_finish *finish = dmnsn_new_finish();
+ if (finish) {
+ dmnsn_color *param = malloc(sizeof(dmnsn_color));
+ if (!param) {
+ dmnsn_delete_finish(finish);
+ return NULL;
+ }
+
+ *param = ambient;
+ finish->ptr = param;
+ finish->ambient_fn = &dmnsn_ambient_finish_fn;
+ finish->free_fn = &free;
+ }
+ return finish;
+}
diff --git a/libdimension/objects.c b/libdimension/cube.c
index 3470506..57dd12b 100644
--- a/libdimension/objects.c
+++ b/libdimension/cube.c
@@ -23,74 +23,6 @@
#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
*/
diff --git a/libdimension/diffuse.c b/libdimension/diffuse.c
new file mode 100644
index 0000000..4da51ee
--- /dev/null
+++ b/libdimension/diffuse.c
@@ -0,0 +1,58 @@
+/*************************************************************************
+ * 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>
+
+/*
+ * Diffuse finish
+ */
+
+static dmnsn_color
+dmnsn_diffuse_finish_fn(const dmnsn_finish *finish,
+ dmnsn_color light, dmnsn_color color,
+ dmnsn_vector ray, dmnsn_vector normal,
+ dmnsn_vector viewer)
+{
+ double *diffuse = finish->ptr;
+ double diffuse_factor = (*diffuse)*dmnsn_vector_dot(ray, normal);
+ return dmnsn_color_mul(diffuse_factor, dmnsn_color_illuminate(light, color));
+}
+
+dmnsn_finish *
+dmnsn_new_diffuse_finish(double diffuse)
+{
+ dmnsn_finish *finish = dmnsn_new_finish();
+ if (finish) {
+ double *param = malloc(sizeof(double));
+ if (!param) {
+ dmnsn_delete_finish(finish);
+ return NULL;
+ }
+
+ *param = diffuse;
+
+ finish->ptr = param;
+ finish->finish_fn = &dmnsn_diffuse_finish_fn;
+ finish->free_fn = &free;
+ }
+ return finish;
+}
diff --git a/libdimension/finishes.c b/libdimension/finish_combination.c
index a1b10e7..045db96 100644
--- a/libdimension/finishes.c
+++ b/libdimension/finish_combination.c
@@ -110,112 +110,3 @@ dmnsn_new_finish_combination(dmnsn_finish *f1, dmnsn_finish *f2)
return NULL;
}
-
-/*
- * Ambient finish
- */
-
-static dmnsn_color
-dmnsn_ambient_finish_fn(const dmnsn_finish *finish, dmnsn_color pigment)
-{
- dmnsn_color *ambient = finish->ptr;
- return dmnsn_color_illuminate(*ambient, pigment);
-}
-
-dmnsn_finish *
-dmnsn_new_ambient_finish(dmnsn_color ambient)
-{
- dmnsn_finish *finish = dmnsn_new_finish();
- if (finish) {
- dmnsn_color *param = malloc(sizeof(dmnsn_color));
- if (!param) {
- dmnsn_delete_finish(finish);
- return NULL;
- }
-
- *param = ambient;
- finish->ptr = param;
- finish->ambient_fn = &dmnsn_ambient_finish_fn;
- finish->free_fn = &free;
- }
- return finish;
-}
-
-/*
- * Diffuse finish
- */
-
-static dmnsn_color
-dmnsn_diffuse_finish_fn(const dmnsn_finish *finish,
- dmnsn_color light, dmnsn_color color,
- dmnsn_vector ray, dmnsn_vector normal,
- dmnsn_vector viewer)
-{
- double *diffuse = finish->ptr;
- double diffuse_factor = (*diffuse)*dmnsn_vector_dot(ray, normal);
- return dmnsn_color_mul(diffuse_factor, dmnsn_color_illuminate(light, color));
-}
-
-dmnsn_finish *
-dmnsn_new_diffuse_finish(double diffuse)
-{
- dmnsn_finish *finish = dmnsn_new_finish();
- if (finish) {
- double *param = malloc(sizeof(double));
- if (!param) {
- dmnsn_delete_finish(finish);
- return NULL;
- }
-
- *param = diffuse;
-
- finish->ptr = param;
- finish->finish_fn = &dmnsn_diffuse_finish_fn;
- finish->free_fn = &free;
- }
- return finish;
-}
-
-/*
- * Phong finish
- */
-
-static dmnsn_color
-dmnsn_phong_finish_fn(const dmnsn_finish *finish,
- dmnsn_color light, dmnsn_color color,
- dmnsn_vector ray, dmnsn_vector normal,
- dmnsn_vector viewer)
-{
- double *params = finish->ptr;
-
- double specular = params[0];
- double exp = params[1];
-
- dmnsn_vector proj = dmnsn_vector_mul(2*dmnsn_vector_dot(ray, normal), normal);
- dmnsn_vector reflected = dmnsn_vector_sub(proj, ray);
-
- double specular_factor = pow(dmnsn_vector_dot(reflected, viewer), exp);
- return dmnsn_color_mul(specular*specular_factor, light);
-}
-
-/* A phong finish */
-dmnsn_finish *
-dmnsn_new_phong_finish(double specular, double exp)
-{
- dmnsn_finish *finish = dmnsn_new_finish();
- if (finish) {
- double *params = malloc(2*sizeof(double));
- if (!params) {
- dmnsn_delete_finish(finish);
- return NULL;
- }
-
- params[0] = specular;
- params[1] = exp;
-
- finish->ptr = params;
- finish->finish_fn = &dmnsn_phong_finish_fn;
- finish->free_fn = &free;
- }
- return finish;
-}
diff --git a/libdimension/cameras.c b/libdimension/perspective.c
index 3389cc7..3389cc7 100644
--- a/libdimension/cameras.c
+++ b/libdimension/perspective.c
diff --git a/libdimension/phong.c b/libdimension/phong.c
new file mode 100644
index 0000000..815885f
--- /dev/null
+++ b/libdimension/phong.c
@@ -0,0 +1,67 @@
+/*************************************************************************
+ * 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>
+
+/*
+ * Phong finish
+ */
+
+static dmnsn_color
+dmnsn_phong_finish_fn(const dmnsn_finish *finish,
+ dmnsn_color light, dmnsn_color color,
+ dmnsn_vector ray, dmnsn_vector normal,
+ dmnsn_vector viewer)
+{
+ double *params = finish->ptr;
+
+ double specular = params[0];
+ double exp = params[1];
+
+ dmnsn_vector proj = dmnsn_vector_mul(2*dmnsn_vector_dot(ray, normal), normal);
+ dmnsn_vector reflected = dmnsn_vector_sub(proj, ray);
+
+ double specular_factor = pow(dmnsn_vector_dot(reflected, viewer), exp);
+ return dmnsn_color_mul(specular*specular_factor, light);
+}
+
+/* A phong finish */
+dmnsn_finish *
+dmnsn_new_phong_finish(double specular, double exp)
+{
+ dmnsn_finish *finish = dmnsn_new_finish();
+ if (finish) {
+ double *params = malloc(2*sizeof(double));
+ if (!params) {
+ dmnsn_delete_finish(finish);
+ return NULL;
+ }
+
+ params[0] = specular;
+ params[1] = exp;
+
+ finish->ptr = params;
+ finish->finish_fn = &dmnsn_phong_finish_fn;
+ finish->free_fn = &free;
+ }
+ return finish;
+}
diff --git a/libdimension/lights.c b/libdimension/point_light.c
index 9862506..9862506 100644
--- a/libdimension/lights.c
+++ b/libdimension/point_light.c
diff --git a/libdimension/pigments.c b/libdimension/solid_pigment.c
index adf44c4..adf44c4 100644
--- a/libdimension/pigments.c
+++ b/libdimension/solid_pigment.c
diff --git a/libdimension/sphere.c b/libdimension/sphere.c
new file mode 100644
index 0000000..c61a46f
--- /dev/null
+++ b/libdimension/sphere.c
@@ -0,0 +1,91 @@
+/*************************************************************************
+ * 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;
+}