82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
/*
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Copyright (C) 2014-2019, Johannes Pekkilae, Miikka Vaeisalae.
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This file is part of Astaroth.
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Astaroth is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Astaroth is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Astaroth. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "memory.h"
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#include <math.h>
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#include <string.h>
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#include "src/core/errchk.h"
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AcResult
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acMeshCreate(const AcMeshInfo info, AcMesh* mesh)
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{
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mesh->info = info;
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const size_t bytes = acVertexBufferSizeBytes(mesh->info);
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for (int w = 0; w < NUM_VTXBUF_HANDLES; ++w) {
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mesh->vertex_buffer[w] = malloc(bytes);
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ERRCHK_ALWAYS(mesh->vertex_buffer[w]);
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}
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return AC_SUCCESS;
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}
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AcResult
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acMeshDestroy(AcMesh* mesh)
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{
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for (int w = 0; w < NUM_VTXBUF_HANDLES; ++w)
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free(mesh->vertex_buffer[w]);
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return AC_SUCCESS;
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}
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AcResult
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acMeshSet(const AcReal value, AcMesh* mesh)
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{
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const int n = acVertexBufferSize(mesh->info);
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for (int w = 0; w < NUM_VTXBUF_HANDLES; ++w)
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for (int i = 0; i < n; ++i)
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mesh->vertex_buffer[w][i] = value;
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return AC_SUCCESS;
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}
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static AcReal
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randf(void)
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{
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return (AcReal)rand() / (AcReal)RAND_MAX;
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}
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AcResult
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acMeshRandomize(AcMesh* mesh)
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{
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const int n = acVertexBufferSize(mesh->info);
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for (int w = 0; w < NUM_VTXBUF_HANDLES; ++w)
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for (int i = 0; i < n; ++i)
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mesh->vertex_buffer[w][i] = randf();
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return AC_SUCCESS;
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}
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AcResult
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acMeshClear(AcMesh* mesh)
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{
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return acMeshSet(0, mesh);
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}
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