100 lines
2.2 KiB
C++
100 lines
2.2 KiB
C++
/*
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* DoRayMe - a quick and dirty Raytracer
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* Group implementation
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*
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* Created by Manoël Trapier
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* Copyright (c) 2020 986-Studio.
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*
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*/
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#include <tuple.h>
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#include <ray.h>
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#include <group.h>
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#include <cone.h>
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#include <math_helper.h>
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#define MIN_ALLOC (2)
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Group::Group() : Shape(SHAPE_GROUP)
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{
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this->allocatedObjectCount = MIN_ALLOC;
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this->objectList = (Shape **)calloc(sizeof(Shape *), MIN_ALLOC);
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this->objectCount = 0;
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}
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Intersect Group::intersect(Ray r)
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{
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Intersect ret;
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int i, j;
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if (this->objectCount > 0)
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{
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for(i = 0; i < this->objectCount; i++)
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{
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Intersect xs = this->objectList[i]->intersect(r);
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if (xs.count() > 0)
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{
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for(j = 0; j < xs.count(); j++)
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{
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ret.add(xs[j]);
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}
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}
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}
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}
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return ret;
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}
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Intersect Group::localIntersect(Ray r)
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{
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return Intersect();
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}
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Tuple Group::localNormalAt(Tuple point)
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{
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return Vector(1, 0, 0);
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}
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void Group::addObject(Shape *s)
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{
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if ((this->objectCount + 1) > this->allocatedObjectCount)
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{
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this->allocatedObjectCount *= 2;
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this->objectList = (Shape **)realloc(this->objectList, sizeof(Shape **) * this->allocatedObjectCount);
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}
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s->parent = this;
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s->updateTransform();
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this->objectList[this->objectCount++] = s;
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}
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bool Group::isEmpty()
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{
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return (this->objectCount == 0);
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}
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BoundingBox Group::getBounds()
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{
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BoundingBox ret;
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if (this->objectCount > 0)
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{
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ret.min = Point(INFINITY, INFINITY, INFINITY);
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ret.max = Point(-INFINITY, -INFINITY, -INFINITY);
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int i;
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for(i = 0; i < this->objectCount; i++)
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{
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BoundingBox obj = this->objectList[i]->getBounds();
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if (ret.min.x > obj.min.x) { ret.min.x = obj.min.x; }
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if (ret.min.y > obj.min.y) { ret.min.y = obj.min.y; }
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if (ret.min.z > obj.min.z) { ret.min.z = obj.min.z; }
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if (ret.max.x < obj.max.x) { ret.max.x = obj.max.x; }
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if (ret.max.y < obj.max.y) { ret.max.y = obj.max.y; }
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if (ret.max.z < obj.max.z) { ret.max.z = obj.max.z; }
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}
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}
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return ret;
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} |