51 lines
991 B
C++
51 lines
991 B
C++
/*
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* DoRayMe - a quick and dirty Raytracer
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* Sequence header
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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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#ifndef DORAYME_SEQUENCE_H
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#define DORAYME_SEQUENCE_H
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#include <stdlib.h>
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#include <stdint.h>
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#include <time.h>
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class Sequence
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{
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private:
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double *list;
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uint32_t listPos;
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uint32_t listSize;
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public:
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Sequence() : list(nullptr), listPos(0), listSize(0) {
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/* Need to bootstrap rand here */
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srand(time(NULL));
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}
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Sequence(double *list, uint32_t listSize) : list(list), listPos(0), listSize(listSize) { };
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static double frand(void)
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{
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return rand() / ((double) RAND_MAX);
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}
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double next() {
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if (this->listSize == 0)
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{
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return frand();
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}
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else
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{
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uint32_t pos = this->listPos;
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this->listPos = (this->listPos + 1) % this->listSize;
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return this->list[pos];
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}
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}
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};
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#endif /* DORAYME_SEQUENCE_H */
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