gpuray_glsl

annotate src/scene.cc @ 0:f234630e38ff

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initial commit
author John Tsiombikas <nuclear@member.fsf.org>
date Sun, 09 Nov 2014 13:03:36 +0200
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nuclear@0 1 #include <stdio.h>
nuclear@0 2 #include <stdlib.h>
nuclear@0 3 #include <float.h>
nuclear@0 4 #include <algorithm>
nuclear@0 5 #include "scene.h"
nuclear@0 6 #include "texture.h"
nuclear@0 7
nuclear@0 8 bool load_scene_file(Scene *scn, const char *fname);
nuclear@0 9 bool save_scene_file(const Scene *scn, const char *fname);
nuclear@0 10
nuclear@0 11
nuclear@0 12 // default camera
nuclear@0 13 TargetCamera Scene::def_cam(Vector3(0, 0, -10), Vector3(0, 0, 0));
nuclear@0 14
nuclear@0 15 Scene::Scene()
nuclear@0 16 {
nuclear@0 17 camera = &def_cam;
nuclear@0 18 bgcolor = Color(0, 0, 0);
nuclear@0 19 envmap = envmap_conv = 0;
nuclear@0 20 fog_start = fog_end = -1;
nuclear@0 21 }
nuclear@0 22
nuclear@0 23 Scene::~Scene()
nuclear@0 24 {
nuclear@0 25 for(auto obj: objects) {
nuclear@0 26 delete obj;
nuclear@0 27 }
nuclear@0 28 for(auto lt: lights) {
nuclear@0 29 delete lt;
nuclear@0 30 }
nuclear@0 31 if(camera != &def_cam) {
nuclear@0 32 delete camera;
nuclear@0 33 }
nuclear@0 34
nuclear@0 35 delete envmap;
nuclear@0 36 if(envmap_conv != envmap) {
nuclear@0 37 delete envmap_conv;
nuclear@0 38 }
nuclear@0 39 }
nuclear@0 40
nuclear@0 41 bool Scene::load(const char *fname)
nuclear@0 42 {
nuclear@0 43 return load_scene_file(this, fname);
nuclear@0 44 }
nuclear@0 45
nuclear@0 46 bool Scene::save(const char *fname) const
nuclear@0 47 {
nuclear@0 48 return save_scene_file(this, fname);
nuclear@0 49 }
nuclear@0 50
nuclear@0 51 void Scene::set_background_color(const Color &color)
nuclear@0 52 {
nuclear@0 53 bgcolor = color;
nuclear@0 54 }
nuclear@0 55
nuclear@0 56 void Scene::set_fog(float fog_start, float fog_end)
nuclear@0 57 {
nuclear@0 58 this->fog_start = fog_start;
nuclear@0 59 this->fog_end = fog_end;
nuclear@0 60 }
nuclear@0 61
nuclear@0 62 void Scene::get_fog(float *fog_start, float *fog_end) const
nuclear@0 63 {
nuclear@0 64 *fog_start = this->fog_start;
nuclear@0 65 *fog_end = this->fog_end;
nuclear@0 66 }
nuclear@0 67
nuclear@0 68 void Scene::set_environment_map(TextureCube *map, TextureCube *map_conv)
nuclear@0 69 {
nuclear@0 70 envmap = map;
nuclear@0 71 envmap_conv = map_conv;//map_conv ? map_conv : map;
nuclear@0 72 }
nuclear@0 73
nuclear@0 74 void Scene::add_object(Object *obj)
nuclear@0 75 {
nuclear@0 76 objects.push_back(obj);
nuclear@0 77 }
nuclear@0 78
nuclear@0 79 Object *Scene::get_object(int i) const
nuclear@0 80 {
nuclear@0 81 if(i < 0 || i >= (int)objects.size()) {
nuclear@0 82 return 0;
nuclear@0 83 }
nuclear@0 84 return objects[i];
nuclear@0 85 }
nuclear@0 86
nuclear@0 87 int Scene::get_object_count() const
nuclear@0 88 {
nuclear@0 89 return (int)objects.size();
nuclear@0 90 }
nuclear@0 91
nuclear@0 92 void Scene::add_light(Light *lt)
nuclear@0 93 {
nuclear@0 94 lights.push_back(lt);
nuclear@0 95 }
nuclear@0 96
nuclear@0 97 Light *Scene::get_light(int i) const
nuclear@0 98 {
nuclear@0 99 if(i < 0 || i >= (int)lights.size()) {
nuclear@0 100 return 0;
nuclear@0 101 }
nuclear@0 102 return lights[i];
nuclear@0 103 }
nuclear@0 104
nuclear@0 105 int Scene::get_light_count() const
nuclear@0 106 {
nuclear@0 107 return (int)lights.size();
nuclear@0 108 }
nuclear@0 109
nuclear@0 110 void Scene::set_camera(Camera *cam)
nuclear@0 111 {
nuclear@0 112 if(camera != &def_cam) {
nuclear@0 113 delete camera;
nuclear@0 114 }
nuclear@0 115 camera = cam;
nuclear@0 116 }
nuclear@0 117
nuclear@0 118 Camera *Scene::get_camera() const
nuclear@0 119 {
nuclear@0 120 return camera;
nuclear@0 121 }
nuclear@0 122
nuclear@0 123 bool Scene::intersect(const Ray &ray, HitPoint *nearest_hit) const
nuclear@0 124 {
nuclear@0 125 nearest_hit->obj = 0;
nuclear@0 126 nearest_hit->dist = FLT_MAX;
nuclear@0 127
nuclear@0 128 // find the nearest hit (if any)
nuclear@0 129 for(Object *obj: objects) {
nuclear@0 130 HitPoint hit;
nuclear@0 131 if(obj->intersect(ray, &hit) && hit.dist < nearest_hit->dist) {
nuclear@0 132 *nearest_hit = hit;
nuclear@0 133 }
nuclear@0 134 }
nuclear@0 135 return nearest_hit->obj != 0;
nuclear@0 136 }
nuclear@0 137
nuclear@0 138 Color Scene::env_color(const Ray &ray) const
nuclear@0 139 {
nuclear@0 140 if(envmap) {
nuclear@0 141 Vector3 dir = ray.dir.normalized();
nuclear@0 142 return envmap->sample(dir.x, dir.y, dir.z);
nuclear@0 143 }
nuclear@0 144 return bgcolor;
nuclear@0 145 }
nuclear@0 146
nuclear@0 147 void Scene::prepare_xform(long msec)
nuclear@0 148 {
nuclear@0 149 int nobj = get_object_count();
nuclear@0 150 for(int i=0; i<nobj; i++) {
nuclear@0 151 objects[i]->prepare_xform(msec);
nuclear@0 152 }
nuclear@0 153 }