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annotate src/dmperlin.h @ 2294:7f6ba3b32f54

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Cleanups.
author Matti Hamalainen <ccr@tnsp.org>
date Wed, 03 Jul 2019 10:28:43 +0300
parents 85fab9d640ec
children 04c035342960
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1 /*
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2 * DMLib
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3 * -- Perlin noise functionality
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4 * Programmed and designed by Matti 'ccr' Hamalainen
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5 * (C) Copyright 2012 Tecnic Software productions (TNSP)
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6 */
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7 #ifndef DMPERLIN_H
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8 #define DMPERLIN_H
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9
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10 #include "dmlib.h"
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11
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12 #ifdef __cplusplus
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13 extern "C" {
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14 #endif
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16
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17 #define DM_PLNS_B (0x100)
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18 #define DM_PLNS_BM (0x0ff)
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19 #define DM_PLNS_N (0x1000)
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20
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21 typedef struct
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22 {
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23 int p[DM_PLNS_B + DM_PLNS_B + 2];
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24 DMFloat g2[DM_PLNS_B + DM_PLNS_B + 2][2];
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25 DMFloat g1[DM_PLNS_B + DM_PLNS_B + 2];
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26 } DMPerlinContext;
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27
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28
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29 int dmPerlinInit(DMPerlinContext *ctx, const int seed);
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30 DMFloat dmPerlinNoise2D(const DMPerlinContext *ctx, DMFloat x, DMFloat y, DMFloat alpha, DMFloat beta, int n);
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32
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33 #ifdef __cplusplus
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34 }
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35 #endif
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36
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37 #endif // DMPERLIN_H