sg3d_sXd_helper.h (1848B)
1 /* Copyright (C) 2019, 2020, 2023, 2024 |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 SG3D_S3D_HELPER_H__ 17 #define SG3D_S3D_HELPER_H__ 18 19 #include "sg3d.h" 20 #include <star/senc3d.h> 21 22 #include <rsys/rsys.h> 23 24 /* Get vertex indices for the itri_th triangle. 25 * Suitable for use as get_indice callback in s3d_mesh_setup_indexed_vertices 26 * calls. */ 27 static FINLINE void 28 sg3d_sXd_geometry_get_indices 29 (const unsigned itri, 30 unsigned indices[SG3D_GEOMETRY_DIMENSION], 31 void* ctx) 32 { 33 const struct sg3d_geometry* geometry = ctx; 34 ASSERT(indices && geometry); 35 SG3D(geometry_get_unique_triangle_vertices(geometry, itri, indices)); 36 } 37 38 /* Get coordinates for the ivert_th vertex. 39 * Suitable for use as s3d_vertex_data getter for S3D_POSITION s3d_attrib_usage 40 * in s3d_mesh_setup_indexed_vertices calls. */ 41 static FINLINE void 42 sg3d_sXd_geometry_get_position 43 (const unsigned ivert, 44 float coord[SG3D_GEOMETRY_DIMENSION], 45 void* ctx) 46 { 47 const struct sg3d_geometry* geometry = ctx; 48 double tmp[3]; 49 int i; 50 ASSERT(coord && geometry); 51 SG3D(geometry_get_unique_vertex(geometry, ivert, tmp)); 52 FOR_EACH(i, 0, SG3D_GEOMETRY_DIMENSION) coord[i] = (float)tmp[i]; 53 } 54 55 #endif /* SG3D_S3D_HELPER_H__ */