/* * DoRayMe - a quick and dirty Raytracer * Intersect implementation * * Created by Manoƫl Trapier * Copyright (c) 2020 986-Studio. * */ #include #include #include #include #define MIN_ALLOC (2) Intersect::Intersect() { this->allocated = MIN_ALLOC; this->list = (Intersection *)calloc(sizeof(Intersection *), MIN_ALLOC); this->num = 0; } void Intersect::add(Intersection i) { if ((this->num + 1) > this->allocated) { this->allocated *= 2; this->list = (Intersection *)realloc(this->list, sizeof(Intersection *) * this->allocated); } this->list[this->num++] = i; } Intersection Intersect::hit() { int i; double minHit = DBL_MAX; uint32_t curHit = -1; for(i = 0; i < this->num; i++) { if ((this->list[i].t >= 0) && (this->list[i].t < minHit)) { curHit = i; minHit = this->list[i].t; } } if (curHit == -1) { return Intersection(0, nullptr); } return this->list[curHit]; }