annotate libs/vmath/ray.inl @ 45:8da36540e2e9
fixed memory leak in readxml and reversed error return
| author |
John Tsiombikas <nuclear@member.fsf.org> |
| date |
Sun, 08 Dec 2013 02:27:32 +0200 |
| parents |
4deb0b12fe14 |
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line source |
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nuclear@27
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1 /*
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2 libvmath - a vector math library
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3 Copyright (C) 2004-2011 John Tsiombikas <nuclear@member.fsf.org>
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4
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5 This program is free software: you can redistribute it and/or modify
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6 it under the terms of the GNU Lesser General Public License as published
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7 by the Free Software Foundation, either version 3 of the License, or
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8 (at your option) any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public License
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16 along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 */
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18
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19 #ifdef __cplusplus
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20 extern "C" {
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21 #endif /* __cplusplus */
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22
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23 static VMATH_INLINE ray_t ray_cons(vec3_t origin, vec3_t dir)
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24 {
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25 ray_t r;
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26 r.origin = origin;
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27 r.dir = dir;
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28 return r;
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29 }
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30
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31 #ifdef __cplusplus
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32 }
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33
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34 VMATH_INLINE Ray reflect_ray(const Ray &inray, const Vector3 &norm)
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35 {
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36 Ray ray = inray;
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37 ray.dir = ray.dir.reflection(norm);
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38 return ray;
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39 }
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40
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41 VMATH_INLINE Ray refract_ray(const Ray &inray, const Vector3 &norm, scalar_t from_ior, scalar_t to_ior)
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42 {
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43 Ray ray = inray;
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44 ray.dir = ray.dir.refraction(norm, from_ior, to_ior);
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45
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46 /* check TIR */
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47 if(dot_product(ray.dir, norm) > 0.0) {
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48 return reflect_ray(inray, norm);
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49 }
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50 return ray;
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51 }
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52 #endif /* __cplusplus */
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