test_sg2d_utils2.h (2326B)
1 /* Copyright (C) 2019, 2020, 2023 |Méso|Star> (contact@meso-star.com) 2 * 3 * This program is free software: you can redistribute it and/or modify 4 * it under the terms of the GNU General Public License as published by 5 * the Free Software Foundation, either version 3 of the License, or 6 * (at your option) any later version. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program. If not, see <http://www.gnu.org/licenses/>. */ 15 16 #ifndef TEST_SG2D_UTILS2_H 17 #define TEST_SG2D_UTILS2_H 18 19 #include <rsys/stretchy_array.h> 20 21 /****************************************************************************** 22 * Circle functions 23 *****************************************************************************/ 24 static INLINE void 25 create_circle 26 (const double radius, 27 const unsigned nslices, 28 struct context* ctx) 29 { 30 double step_theta; 31 unsigned itheta; 32 unsigned islice; 33 double* d = NULL; 34 unsigned* u = NULL; 35 ASSERT(radius > 0 && nslices >= 3 && ctx); 36 37 step_theta = 2 * PI / (double)nslices; 38 FOR_EACH(itheta, 0, nslices) { 39 const double theta = (double)itheta * step_theta; 40 const double x = cos(theta); 41 const double y = sin(theta); 42 sa_push(d, x * radius); 43 sa_push(d, y * radius); 44 } 45 ctx->positions = d; 46 47 FOR_EACH(islice, 0, nslices) { 48 const unsigned v0 = islice; 49 const unsigned v1 = ((islice + 1) % nslices); 50 sa_push(u, v0); 51 sa_push(u, v1); 52 } 53 ctx->indices = u; 54 } 55 56 static INLINE void 57 circle_release(struct context* ctx) 58 { 59 ASSERT(ctx); 60 sa_release(ctx->positions); 61 sa_release(ctx->indices); 62 ctx->positions = NULL; 63 ctx->indices = NULL; 64 } 65 66 static INLINE void 67 get_uniform_properties 68 (const unsigned iseg, 69 unsigned property[SG2D_PROP_TYPES_COUNT__], 70 void* context) 71 { 72 const struct context* ctx = context; 73 ASSERT(property && ctx); (void)iseg; 74 property[ctx->reverse_med ? SG2D_BACK : SG2D_FRONT] = *ctx->front_media; 75 property[ctx->reverse_med ? SG2D_FRONT : SG2D_BACK] = *ctx->back_media; 76 property[SG2D_INTFACE] = *ctx->intface; 77 } 78 79 #endif /* TEST_SG2D_UTILS2_H */