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author | Tavian Barnes <tavianator@gmail.com> | 2010-01-06 13:43:14 -0500 |
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committer | Tavian Barnes <tavianator@gmail.com> | 2010-01-06 13:43:14 -0500 |
commit | 4e2a6e40a77068492e3b63b84a18d0cc7f003fb7 (patch) | |
tree | 3456c6c4426092f40c039a48c82a161e49419bf9 /libdimension/finishes.c | |
parent | 2fab7d7ff6b926e79c35be3e59b42e733f8bf33c (diff) | |
download | dimension-4e2a6e40a77068492e3b63b84a18d0cc7f003fb7.tar.xz |
Split up objects, finishes, pigments, lights, cameras, etc.
Diffstat (limited to 'libdimension/finishes.c')
-rw-r--r-- | libdimension/finishes.c | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/libdimension/finishes.c b/libdimension/finishes.c deleted file mode 100644 index a1b10e7..0000000 --- a/libdimension/finishes.c +++ /dev/null @@ -1,221 +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> - -/* - * Finish combinations - */ - -static dmnsn_color -dmnsn_finish_combination_fn(const dmnsn_finish *finish, - dmnsn_color light, dmnsn_color color, - dmnsn_vector ray, dmnsn_vector normal, - dmnsn_vector viewer) -{ - dmnsn_finish **params = finish->ptr; - if (params[0]->finish_fn && params[1]->finish_fn) { - return dmnsn_color_add((*params[0]->finish_fn)(params[0], light, color, ray, - normal, viewer), - (*params[1]->finish_fn)(params[1], light, color, ray, - normal, viewer)); - } else if (params[0]->finish_fn) { - return (*params[0]->finish_fn)(params[0], light, color, ray, - normal, viewer); - } else if (params[1]->finish_fn) { - return (*params[1]->finish_fn)(params[1], light, color, ray, - normal, viewer); - } else { - return dmnsn_black; - } -} - -static dmnsn_color -dmnsn_finish_combination_ambient_fn(const dmnsn_finish *finish, - dmnsn_color pigment) -{ - dmnsn_finish **params = finish->ptr; - if (params[0]->ambient_fn && params[1]->ambient_fn) { - return dmnsn_color_add((*params[0]->ambient_fn)(params[0], pigment), - (*params[1]->ambient_fn)(params[1], pigment)); - } else if (params[0]->ambient_fn) { - return (*params[0]->ambient_fn)(params[0], pigment); - } else if (params[1]->ambient_fn) { - return (*params[1]->ambient_fn)(params[1], pigment); - } else { - return dmnsn_black; - } -} - -static void -dmnsn_finish_combination_free_fn(void *ptr) -{ - dmnsn_finish **params = ptr; - dmnsn_delete_finish(params[0]); - dmnsn_delete_finish(params[1]); - free(ptr); -} - -dmnsn_finish * -dmnsn_new_finish_combination(dmnsn_finish *f1, dmnsn_finish *f2) -{ - if (f1 && f2) { - dmnsn_finish *finish = dmnsn_new_finish(); - if (finish) { - dmnsn_finish **params = malloc(2*sizeof(dmnsn_finish *)); - if (!params) { - dmnsn_delete_finish(finish); - dmnsn_delete_finish(f2); - dmnsn_delete_finish(f1); - return NULL; - } - - params[0] = f1; - params[1] = f2; - - finish->ptr = params; - finish->finish_fn = &dmnsn_finish_combination_fn; - finish->ambient_fn = &dmnsn_finish_combination_ambient_fn; - finish->free_fn = &dmnsn_finish_combination_free_fn; - - return finish; - } else { - dmnsn_delete_finish(f2); - dmnsn_delete_finish(f1); - } - } else if (f1) { - dmnsn_delete_finish(f1); - } else if (f2) { - dmnsn_delete_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; -} |